The volume of the solid is 342.9 sq. cm.
What is the volume of an object?The volume of an object is the amount of substance that the object can contain. Th three dimensions of the object is required in order to determine its volume.
Considering the question,
volume of a cylinder = [tex]\pi[/tex]r^2h
Where r is the radius and h is the height of the cylinder.
volume of the hole = length*width*height
Thus,
The volume of a cylinder = [tex]\pi[/tex]r^2h
= 22/7*4^2*10
= 502.86
The volume of the cylinder is 502.86 sq. cm.
The volume of the hole = length*width*height
= 4*4*10
= 160 sq cm.
The volume of the solid = volume of a cylinder - volume of the hole
= 502.86 - 160
= 342.86
The volume of the solid is 342.9 sq. cm.
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Question 9
1 pts
Burt earns a semi-monthly income of $3,250. He spends 24% on his
mortgage, 6.5% on utilities and 15% on food, another 8% on
miscellaneous items and saves the rest. How much does he save from each
paycheck? Round your answer to the nearest $100
Burt saves $1,500 from each pay check.
What is the percentage?
A percentage is a way of expressing a number or quantity as a fraction of 100. It is commonly used to express the proportion of one quantity relative to another or the amount of change between two quantities.
For example, if you received a score of 80 out of 100 on a test, you can express that score as a percentage by dividing 80 by 100 and multiplying by 100. The result is 80%, which means you scored 80% of the total possible points.
Percentages are often used in finance, such as when calculating interest rates, taxes, and discounts. They are also used in statistics to express the probability or likelihood of an event occurring.
Understanding percentages are important in everyday life, as they are commonly used to compare and evaluate different quantities and values.
Burt earns a semi-monthly income of $3,250, which means he earns $6,500 per month.
He spends 24% of his income on his mortgage, which is:
0.24 x $6,500 = $1,560
He spends 6.5% of his income on utilities, which is:
0.065 x $6,500 = $422.50
He spends 15% of his income on food, which is:
0.15 x $6,500 = $975
He spends 8% of his income on miscellaneous items, which is:
0.08 x $6,500 = $520
Therefore, his total expenses are:
$1,560 + $422.50 + $975 + $520 = $3,477.50
To find out how much he saves from each paycheck, we need to subtract his total expenses from his monthly income:
$6,500 - $3,477.50 = $3,022.50
Since he gets paid semi-monthly, he saves half of this amount from each paycheck:
$3,022.50 / 2 = $1,511.25
Rounding this amount to the nearest $100, we get:
$1,500
Therefore, Burt saves $1,500 from each paycheck.
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A nurse wants to simulate the number of male and female births at the hospital where she
works using a random digit table. She selects the numbers 0-4 to represent girls and 5-9 to
represent boys and selects samples of 20. What are the results of her first 3 trials?
17939 67764 07134 99047
62454 81069 07879 85428
59398 41822 46480 38033
The results of the first three trials are:
Trial 1: 8 girls, 12 boys
Trial 2: 13 girls, 7 boys
Trial 3: 11 girls, 9 boys
What is permutation and combination ?
Permutation and combination are two related concepts in mathematics that deal with counting and arranging objects.
Permutation refers to the number of ways in which a set of objects can be arranged or ordered. In other words, it involves selecting objects from a set and arranging them in a specific order. The formula for finding the number of permutations of n objects taken r at a time is given by:
nPr = n! / (n-r)!
According to given condition:
To simulate the number of male and female births using a random digit table, the nurse has assigned the digits 0-4 to represent girls and 5-9 to represent boys. She selects samples of 20 and records the digits in order.
For the first trial, the digits are:
1 7 9 3 9 6 7 7 6 4 0 7 1 3 4 9 9 0 4 7
Interpreting these digits using the nurse's coding scheme, we see that there are:
8 girls (represented by the digits 0-4)
12 boys (represented by the digits 5-9)
For the second trial, the digits are:
6 2 4 5 4 8 1 0 6 9 0 7 8 7 9 8 5 4 2 8
Interpreting these digits using the nurse's coding scheme, we see that there are:
13 girls
7 boys
For the third trial, the digits are:
5 9 3 9 8 4 1 8 2 2 4 6 4 8 0 3 3
Interpreting these digits using the nurse's coding scheme, we see that there are:
11 girls
9 boys
Therefore, the results of the first three trials are:
Trial 1: 8 girls, 12 boys
Trial 2: 13 girls, 7 boys
Trial 3: 11 girls, 9 boys
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Integral of the constant function f(x) = k is:
C
0
kx+C
k+C
Answer:
The integral of the constant function f(x) = k is: kx + C. This is because when you integrate a constant function, you are essentially finding the area under the graph. In this case, the area of the graph is equal to the value of k multiplied by the width of the graph (x) plus a constant.
Write a possible sum for 6/8 use 1/4 of one of the add in’s
explain how you found your answer
The sum of fractions [tex]\frac{1}{4}[/tex] and [tex]\frac{6}{8}[/tex] is equal to one.
Fraction addition teaches us how to combine two or more fractions with the same or different denominators. The addition of fractions is determined by two major factors:
1.Identical denominators
2.Various denominators
If the denominators of two fractions are the same (such fractions are said to be like fractions), they can be added directly. If the denominators are different (such fractions are known as unlike fractions), we must change the denominators and then add the fractions.
If the denominators of two or more fractions are the same, we can simply add the numerators while keeping the denominator constant.
To add fractions with the same denominators, follow the steps below:
1. Add the numerators while keeping the denominator constant.
2.Summarize the fraction.
When two or more fractions with different denominators are added together, we cannot directly calculate the numerators.
To add fractions with different denominators, follow the steps below:
1. Examine the fractions' denominators.
2.Make the fraction denominators the same by finding the LCM of the denominators and rationalising them.
3. Add the fraction numerators while keeping the denominator constant.
4.Simplify the fraction to obtain the final total.
As we have fractions with different denominator first of all we take LCM which is equal to 8.
[tex]\frac{1}{4} + \frac{6}{8} = \frac{2+6}{8} = \frac{8}{8} = 1.[/tex]
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People enter line for an escalator at rate modeled by the function given by r(t) {~Gios)' ( 300 ,_ for 0 < t < 300 for [ > 300, where r(t) is measured people per second and IS measured In seconds_ As people get on the escalator; they exit the line at constant rate of 0.7 person per second. There are 20 people in line at time (a) How many people enter the line for the escalator during" the time interval 0 < / < 300 (b) During the time interval 0 < 0 < 300. there are always people in line for the escalator: How many people are Mn Line at time 300 (c) For t > 300. what is the first time that there are no people in line for the escalator? (d) For 0 < t < 300_ at what time is the number of people in line minimum? To the nearest whole number; find the number of people in line at this time. Justify vour answer:
270 people enter the line for the escalator during" the time interval 0 < / < 300 and 80 people are at Mn Line at time 300. 414.285714 sec. is the first time that there are no people in line for the escalator and 33. 0133 time is the number of people in line minimum.
X(t) = 44 ( t/100)³ * (1-t/300)⁷
for 0≤t≤300
for t≥ 300
a) Total number of people = ∫³⁰⁰₀ r(t)*dt
∫³⁰⁰₀ 44(t/100)³ * (1-t/300)⁷ * dt
∫³⁰⁰₀ (11 (1-t/300)⁷ / 250000 * t³) * dt
∫³⁰⁰₀ -11 / 250000 * (t-300)⁷ * t³ * (1/300)⁷ dt
= -11 (1/300)⁷ / 250000 ∫³⁰⁰₀ (t-300)⁷ * t³ * dt
Now Integrate with respect to 't'
using substitution
Let u = t-300
du = dt
∫ u⁷ * (u + 300)³ * du
∫ (u¹⁰ + 900 u⁹ +270000 u⁸ + 27000000 u⁷) * du
= u¹¹/11 + 90 u¹⁰ + 30000 u⁹ + 3375000 u⁸
Undo the substitution
u= (t-300)
= [ (t-300)¹¹ / 11 + 90 (t-300)¹⁰ + 30000(t-300)⁹ + 337500(t-300)⁸]³⁰⁰₀
Substitutes the limits
= [0- ((-300)¹¹/ 11 + 90 * (-300)¹⁰ + 30000 * (-300)⁹ + 3375000 * (-300)⁸]
= 270 people
b) Constant rate of 0.7 people per second
This is the rate of exit
at t = 0.20 people in line
People in a line at t = 300 is = 20+ ∫³⁰⁰₀ ((r(t) - 0.7 ) * dt
= 20 + ∫³⁰⁰₀ 44(t/100)³ * (1-t/300)⁷- 0.7 dt
= 20 + 270 - 0.7 * 300
= 80 people
c) t = 300 sec
people = 80
when t>300 , r(t) = 0
rate of exit remains the same
= 80 + ∫ ( 0-0.7) * dx
= 80 + [-0.7x] = 0
= 80 - [0.7x] = 0
= 80 - 0.7 t + 0.7 * 300 = 0
= 80 - 0.7t + 210 = 0
= - 0.7 t = -290
t = 414.285714 sec.
d) f(t) = 20 + ∫⁶₀ (r(x) - 0.7) * dx
f(t) = r(t) - 0.7
f(t) = 0 (for critical point)
r(x) = 44 (t/100)³ * (1-t/300)⁷
r(t) = 0
we get t= 33.0133 sec.
t = 166.575 sec.
Now check for the value
when t=0
f(t) 20
when t= 33.0133
f(t) = 3.803 ≈ 4
when t = 166.575
f(t) = 158.07 ≈ 158
when t= 300
f(t) = 80
so the minimum number of people is 4 at the time t= 33. 0133
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...........................................
Answer:
it just dots that all
Step-by-step explanation:
no step need
a). Find the inverse of the function, f(x)=(x-2)^3-3.
Please show all work in finding the inverse
b) Now graph the inverse function f^(-1) (x) using the equation you found as the answer to part a)
clearly indicate at least three points on the graph.
The inverse function is:
f⁻¹(x) = ∛(x + 3) + 2
And the graph can be seen in the image at the end.
How to find the inverse of the function?We want to find the inverse of the function f(x) = (x - 2)³ - 3
If the inverse is f⁻¹(x), then we know that:
f⁻¹(f(x)) = x
f(f⁻¹(x)) = x
Using the second one we can write:
f(f⁻¹(x)) = (f⁻¹(x) - 2)³ - 3
And that must be equal to x, then:
(f⁻¹(x) - 2)³ - 3 = x
(f⁻¹(x) - 2)³ = x + 3
f⁻¹(x) - 2 = ∛(x + 3)
f⁻¹(x) = ∛(x + 3) + 2
Now to graph it, we need to find some points, let's evaluate in x = -3, -2, and 5
f⁻¹(-3) = ∛(-3 + 3) + 2 = 2
f⁻¹(-2) = ∛(-2 + 3) + 2 = 3
f⁻¹(5) = ∛(5 + 3) + 2 = 4
So we have the points (-3, 2), (-2, 3), (5, 4), and the graph will be the one at the end.
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3sintheta=sintheta+1
To solve for theta in the equation 3sin(theta) = sin(theta) + 1:
First, we can simplify the equation by subtracting sin(theta) from both sides:
2sin(theta) = 1
Then, we can isolate sin(theta) by dividing both sides by 2:
sin(theta) = 1/2
Using the unit circle or a calculator, we can find the two possible solutions for theta:
theta = pi/6 + 2npi or theta = 5pi/6 + 2npi, where n is an integer.
let r be the region bounded by the following curves. find the volume of the solid generated when r is revolved about the y-axis.
The volume of the solid generated when r is revolved about the y-axis is 3.2π.
Volume of Solid:
The volume of a solid is a measure of the space occupied by an object. This article explains how to calculate the volume of solids and the volume of regular and irregular solids.
According to the Question:
We know that:
A ( y ) = π × (f₁ (y)² - f₂ (y)²)
where,
f₁ (y) is the function further away from y axis
f₂ (y) is the function closer to y axis
f₁ (y) = 2
f₂ (y) = 2y²
A ( y ) = π × [2² - (2y)²]
A (y) = π × (4 - 4y²)
A (y) = 4π (1 - y²)
Now,
Computing V (y)
[tex]V =\int\limits^1_0 {A(y)} \, dy[/tex]
[tex]V = 4\pi \int\limits^1_0 {(1-y^2)} \, dx[/tex]
V = 4π (1 - 0.2)
V = 3.2π
Therefore, The volume of the solid generated when r is revolved about the y-axis is 3.2π.
Complete Question:
Let R be the region bounded by the following curves. Use the disk or washer method to find the volume of the solid generated when R is revolved about the y-axis. y= square root of (x/2) , y=0 , x=2
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I WILL GIVE YOU BRAINLIST
Use academic language and/ or numbers and symbols to explain your choice
With regards to the probabilities of getting each color in the game played by Larry and Jessica, the correct answer is B. No, the probabilities are NOT equally likely.
How to find the probabilities ?In the game being played by Larry and Jessica, the colors that can be picked by either person include:
Red Blue GreenThe probability of picking blue is:
= Number of blue sections / Total sections
= 3 / 8
The probability of picking red is :
= 3 / 8
The probability of picking green is:
= 2 / 8
= 1 / 4
The probabilities are therefore not equally likely.
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a ball is thrown upward in the air, and its height above the ground after seconds is feet. find the time when the ball will be traveling downward at feet per second. give your answer as a decimal approximation with at least 3 decimal places.
the ball will be traveling downward at a velocity of 24 feet per second after approximately 2.75 seconds.
What is velocity ?
Velocity can be defined as ratio of displacement and time taken.
To find the time when the ball will be traveling downward at a velocity of feet per second, we need to find the time when the velocity is equal to that value, which means the velocity is negative.
The velocity of the ball at any time t can be found by taking the derivative of the height function with respect to time:
v(t) = -32t + 64
We need to find the time t when v(t) = -24 feet per second. So we can set up the equation:
-32t + 64 = -24
Solving for t:
-32t = -88
t = 2.75 seconds (rounded to three decimal places)
Therefore, the ball will be traveling downward at a velocity of 24 feet per second after approximately 2.75 seconds.
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A food packing company is trying to find out how much soup can go into each of its cylindrical cans. A standard can has a radius of centimeters and a height of centimeters. What is the volume of each soup can?
The volume of each soup can is approximately 785.4 cubic centimeters.
What is a formula for volume?The volume of a cylinder can be calculated using the formula:
Volume =[tex]\pi[/tex] ×[tex]radius^2[/tex]× height
where π (pi) is a mathematical constant approximately equal to 3.14159, the radius is the distance from the center of the circular base of the cylinder to its edge, and height is the vertical distance between the circular bases.
In other words, the volume of a cylinder is the amount of space occupied by the cylinder, and it depends on the size of the circular base and the height of the cylinder.
In this case, the radius of the can is given as centimeters and the height is also given as centimeters. So, we can substitute these values in the formula and calculate the volume:
Volume = π × [tex]radius^2[/tex] × height
Volume = π ×[tex]5^2[/tex] × 10
Substituting radius = 5 cm and height = 10 cm
Volume = 250π cubic centimeters
Volume ≈ 785.4 cubic centimeters (rounded to one decimal place)
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Jace collected data on the distances electric vehicles can travel on one charge. He wants to show the average distance and the range an electric vehicle can travel on one charge.
Choose and make an appropriate display of the data
The average of the data set is 275
The range is given as 300
How to solve for the average distance of electric carsThe average would be a summation of the data under the electric vehicle divided by the total number of data in the table
We have 250 + 250 + 250 + 400 + 300 + 300 + 350 + 100 / 8
= 2200 / 8
= 275
The rangeThe range can be described as the distance that lies between the maximum and the minimum value in a data set
= 400 - 100
= 300
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5. Let a and b be two independent events with p (a) = 0. 4 and p (a ∪ b) = 0. 64. What is p (b)?
Let a and b be two independent events, if p (a) = 0. 4 and p (a ∪ b) = 0. 64 then the value of the p(b) = 0.4
In this question, we will utilise the notion of independent events and the probability addition rule to determine the probability of event B. The product of the individual probabilities will represent the intersection of independent events.
p(a) = 0.4
p(a∪b) = 0.64
p (a ∩ b) = p(a) x p(b)
p (a ∪ b) = p(a) + p(b) - p(a) x p(b)
0.64 = 0.4 + p(b) - 0.4 x p(b)
p(b) = 0.4
Therefore, the value of the p(b) = 0.4
Independent occurrences are ones whose occurrence is unrelated to any other event. For example, suppose we flip a coin in the air and receive the result Head, then we flip the coin again and obtain the result Tail. The occurrences occur independently of one another in both circumstances. It is one of the several kinds of occurrences in probability.
Let us now look at the whole description of independent events, including a Venn diagram, examples, and how they vary from mutually exclusive events.
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PLEASE ANSWER! I NEED IT IN 10 mins! AND SHOW ALL YOUR WORK!
Find the value of (X -a) (X - b) (X - c) (X - d)……(x-z)
The value of the expression is (X -a) (X - b) (X - c) (X - d)……(x-z) = X26 - 26C1 X25a + 26C2 X24a2 - 26C3 X23a3 + .... + (-1)25-1a25-1 + (-1)26a26.
What is value?Value of subjective concept that refers to the word of important that an individual group of people places on the something it is often associated with principal beliefs and the standard that are accepted by society when you can be seen as a matter of how important something is true person of organization it is often seen as a reflection of funds for view and can help to save decision.
To find the value of (X -a) (X - b) (X - c) (X - d)……(x-z), we can use the formula of expansion of a binomial expression, which is (x - y) n = xn -nC1 xn-1y + nC2 xn-2y2 - nC3 xn-3y3 + .... + (-1)n-1yn-1 + (-1)n yn.
In this case, n = 26 and x = X, and y = a, b, c, d, …, z. Therefore, the value of the expression is
(X -a) (X - b) (X - c) (X - d)……(x-z) = X26 - 26C1 X25a + 26C2 X24a2 - 26C3 X23a3 + .... + (-1)25-1a25-1 + (-1)26a26.
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Jesse is a full-time college student and is 20 years old. Can he be claimed as a dependent? Txplain.
Answer:
Step-by-step explanation:
yes
Mr. Smith is putting a brick border around his irregular shaped yard. Before installing the border, he must cut the bricks to fit the angles of the garden. Use the given measures to answer the question
All the angle measures are;
m∠A = 160°
m∠B = 142°
m∠C = 120°
m∠D = 156°
m∠E = 31°
m∠F = 111°
What is the interior angle?Angles inside a polygon are referred to as interior angles. A triangle, for instance, has three internal angles. Interior angles are sometimes defined as "angles confined in the interior area of two parallel lines when they are crossed by a transversal."
Given:
Mr. Smith is putting a brick border around his irregularly shaped yard.
Before installing the border,
he must cut the bricks to fit the angles of the garden.
There are 6 sides to the polygon.
The total sum of the irregular angle = (4 - 2) x 180° = 720°.
So,
7x - 8 + 4x + 46 + 5x + 6x + 12 + x + 7 + 5x - 9 = 720°.
28x = 720 - 48
x = 24
Now, all the measures are:
m∠A = 7x - 8 = 160°
m∠B = 4x + 46 = 142°
m∠C = 5x = 120°
m∠D = 6x + 12 = 156°
m∠E = x + 7 = 31°
m∠F = 5x - 9 = 111°
Therefore, all the measures are given above.
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a number placed in front of a chemical symbol or formula in order to balance the equation
A number placed in front of a chemical symbol or formula in order to balance the equation is called a coefficient.
In a chemical equation, the coefficients are used to balance the number of atoms on both sides of the equation. The coefficients are placed in front of the chemical formulas or symbols to indicate the number of molecules or atoms involved in the reaction. For example, in the chemical equation for the reaction between hydrogen gas and oxygen gas to form water:
2H2 + O2 → 2H2O
The coefficient "2" in front of the H2O formula indicates that two water molecules are formed in the reaction. The coefficients are adjusted in order to ensure that the number of atoms of each element is equal on both sides of the equation, and that the law of conservation of mass is satisfied.
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ASAP PLEASE HELP ME MY HOMEWORK DEADLINE IS TONIGHT.
Based on angle relationship, the missing angles are:
1. Angle a = 108°; reason: alternate interior angles
2. Angle b = 43°; reason: corresponding angles
3. Angle c = 114°, reason: corresponding angles are congruent.
4. Angle d = 101°; reason: same-side interior angles .
5. Angle e = 82°, reason: alternate interior angles
angle f = 82°, reason: vertical angles
6. Angle g = 67°, reason: corresponding angles
Angle h = 113°, reason: same-side interior angles
7. Angle i = 127°, reason: corresponding angles
Angle j = 53° [reason: linear pair angles]
8. k = = 156° [reason: supplementary angles]
l = 24° [reason: alternate exterior angles]
9. m = 72° [reason: alternate exterior angles]
10. n = 86° [reason: supplementary angles]
11. p = 25° [reason: supplementary angles]
12. q = r = 61° [reason: supplementary angles]
How to Calculate the Missing Angle Using Angle Relationship as Reasons?To calculate a missing angle in a figure using angle relationships, follow these steps:
Identify the type of figure and its relevant angles. Depending on the figure, there may be different angle relationships that can be used to calculate the missing angle.Use the angle relationships and the given angle measures to set up an equation to solve for the missing angle. Some common angle relationships include: corresponding angles which are equal, alternate exterior or interior angles, which are congruent, etc.Therefore:
1. Angle a = 108°, the reason is: alternate interior angles are congruent.
2. Angle b = 43°, the reason is: corresponding angles are congruent.
3. Angle c = 114°, the reason is: corresponding angles are congruent.
4. Based on the same-side interior angles theorem (angle relationship), we have:
d = 180 - 79
d = 101°
5. Angle e = 82°, the reason is: alternate interior angles are congruent.
angle f = 82°, because, vertical angles are congruent.
6. Angle g = 67°, the reason is: corresponding angles are congruent.
Angle h = 180 - 67 = 113°, the reason is: same-side interior angles are supplementary.
7. Angle i = 127°, the reason is: corresponding angles are congruent.
Angle j = 180 - 127 = 53° [reason: linear pair angles]
8. k = 180 - 24 = 156° [reason: supplementary angles]
l = 24° [reason: alternate exterior angles are congruent]
9. m = 72° [reason: alternate exterior angles are congruent]
10. n = 180 - 94 = 86° [reason: supplementary angles]
11. p = 180 - 155 = 25° [reason: supplementary angles]
12. q = r = 180 - 119 = 61° [reason: supplementary angles]
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Please help me pleaseee
Answer:
Step-by-step explanation:
b
what issquare root 12
The square root of 12 is approximately 3.464. To calculate the square root of 12, you can use a calculator or manually by using long division or the Babylonian method.
The Babylonian method involves making an initial guess, dividing the number by the guess, averaging the result with the guess, and repeating the process until the desired level of accuracy is achieved. In this case, the process would look like this:
Start with an initial guess, say 3.Divide 12 by 3 to get 4.Average 3 and 4 to get 3.5.Divide 12 by 3.5 to get 3.42857.Average 3.5 and 3.42857 to get 3.46428.Repeat the process until the desired level of accuracy is achieved.
The square root of 12 is an irrational number, which means it cannot be expressed as a fraction and its decimal representation goes on forever without repeating.
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When an object is dropped into a liquid, the volume of the displaced liquid is _______ to the volume of the object that is dipped. ( a ) Smaller ( b ) Greater ( c ) Equal ( d ) May be Greater or Smaller
Answer:
C
...................
∆ABC was transformed according to the rule (x, y) → (−x, y) to create ∆A'B'C'. What transformation justifies the relationship between the triangles?
A 90° rotation around the origin characterised the transition.
What is the transformational rule?A logical principle that specifies the circumstances in which one assertion can be legitimately inferred from one or more other statements, particularly in codified languages.
What transformation does the rule x y → − x − y?(x, y)(x, y) is the formula for a reflection over the x-axis.
Triangle ABC was changed utilizing the (x, y) rule (–y, x). The triangles' vertices are displayed. A (–1, 1) B (1, 1) C (1, 4) (1, 4) A' (–1, –1) (–1, –1) B' (–1, 1) C' (–4, 1) (–4, 1) Which phrase best sums up the change? A 90° rotation around the origin characterised the transition. A 180° rotation of the origin occurred during the transformation. The transformation was a 270° rotation about the origin. The transformation was a 360° rotation about the origin.
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Answer: A reflection over the y-axis justifies ∆ABC ≅ ∆A'B'C'.
Step-by-step explanation: Took the test, no thanks neeeded :)
-x²-19=45 In Quadratic formula
The solution of the quadratic equation using quadratic formula are x = (√181 - 19)/2 or x = (-√181 - 19)/2.
What are Quadratic Equations?Quadratic equations are defined as the polynomial equations with the highest degree of the variable being 2.
The standard form of a quadratic equation is ax² + b x + c = 0.
Given quadratic equation is,
-x² - 19 = 45
Subtracting both sides by 45,
-x² - 19 - 45 = 0
Multiplying throughout by -1,
x² + 19 + 45 = 0
Quadratic formula for the general quadratic equation is,
x = [-b ± [tex]\sqrt{b^2-4ac}[/tex]] / 2a
Here, [tex]\sqrt{b^2-4ac}[/tex] is called discriminant.
Discriminant of given equation = [tex]\sqrt{19^2-(4*1*45)}[/tex] = √181
x = (-19 ± √181) / 2
x = (√181 - 19)/2 or x = (-√181 - 19)/2
Hence the solutions are x = (√181 - 19)/2 or x = (-√181 - 19)/2.
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when 100 engines are shipped, all of them are free of defects. select a written description of the complement of the given event.
The complement of the given event, that all 100 engines are free of defects, is that at least one engine among the 100 shipped has a defect.
The complement of the given event, which is that all 100 engines shipped are free of defects, is the event that at least one engine among the 100 shipped has a defect. The complement represents the event that is the opposite of the given event. In this case, it is the event that at least one engine among the 100 has a defect, which could be described as the event of "failure" or "non-conformance". This is important in probability theory as it allows us to calculate the probability of the complement event and use it to determine the probability of the original event, among other applications.
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Complete question:
When 100 engines are shipped, all of them are free of defects. Select a written description the complement of the given event
A) At most one of the engines is defective.
B) All of the engines are defective.
C) At least one of the engines is defe
D) None of the engines are defective
Leon has already had 4 science quizzes this semester. Going forward, he expects to have 4 quizzes per month.
Write an equation that shows how the total number of science quizzes, y, depends on the number of months that have passed, x.
The equation that shows how the total number of science quizzes, y, depends on the number of months that have passed, x is y = 4x.
An equation is a mathematical statement that shows the relationship between two or more values.
In this case, Leon has already had 4 science quizzes this semester and expects to have 4 quizzes per month going forward.
We can use an equation to show how the total number of science quizzes, y, depends on the number of months that have passed, x.
The equation for this would be y = 4x, where x is the number of months that have passed and y is the total number of science quizzes.
This equation shows that for each month that passes, the total number of science quizzes increases by 4
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Can someone help me think of a word problem for 6x-4<46?
"Karen wants to buy a new smartphone that costs $46. She currently has some money saved up, represented by the expression 6x - 4, where x is the number of weeks she has been saving. Can Karen buy the smartphone now, or does she need to save for more weeks? Use the inequality 6x - 4 < 46 to help you answer the question."
Describe Algebraic Expression?In mathematics, an algebraic expression is a combination of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. Algebraic expressions are used to represent and solve problems in various areas, including science, engineering, economics, and mathematics.
An algebraic expression can contain one or more variables, which represent unknown or changing quantities, and one or more constants, which represent fixed values. The variables are usually represented by letters, such as x, y, or z. The operations of addition, subtraction, multiplication, and division are represented by the symbols +, -, ×, and ÷, respectively. Parentheses are also used to group terms and indicate the order of operations.
For example, the algebraic expression 3x + 2y - 5 represents a combination of two variables, x and y, and three constants, 3, 2, and 5. The terms 3x and 2y are the variables multiplied by their coefficients, while -5 is a constant term.
Algebraic expressions can be simplified by combining like terms, which are terms that have the same variable raised to the same power. For example, in the expression 3x + 2y - 5 + 4x - 3y, the like terms are 3x and 4x, and 2y and -3y. Combining these terms yields the simplified expression 7x - y - 5.
Algebraic expressions are used in various mathematical operations, such as solving equations, graphing functions, and evaluating formulas. They are also used in real-world applications, such as calculating interest rates, solving optimization problems, and modeling physical phenomena.
Sure, here's a word problem that fits the inequality 6x - 4 < 46:
"Karen wants to buy a new smartphone that costs $46. She currently has some money saved up, represented by the expression 6x - 4, where x is the number of weeks she has been saving. Can Karen buy the smartphone now, or does she need to save for more weeks? Use the inequality 6x - 4 < 46 to help you answer the question."
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The biosphere contains approximately 560 gigatons of carbon and the lithosphere contains about 100,005,500 gigatons of carbon. About how many orders of magnitude greater is the lithosphere’s reservoir of carbon compared to the biosphere?
a. 10^3
b. 10^6
c. 10^10
d. 10^14
The lithosphere's reservoir of carbon is approximately 10^5.25 or about 177,828 times greater than the biosphere's reservoir of carbon. Rounding this to the nearest order of magnitude gives an answer of (b) 10⁶.
Comparing the Carbon Reservoirs in the Biosphere and LithosphereCarbon is one of the most important elements on Earth as it forms the building blocks for life and plays a crucial role in regulating the planet's climate. The carbon cycle is a complex process that involves the exchange of carbon between different reservoirs such as the atmosphere, oceans, biosphere, and lithosphere.
To compare the size of the carbon reservoirs in the biosphere and lithosphere, we can take the ratio of the two reservoirs:
Lithosphere/Biosphere = 100,005,500/560
Simplifying the expression on the right-hand side gives:
Lithosphere/Biosphere = 178,933.93
To convert this ratio to orders of magnitude, we can take the logarithm base 10 of the ratio:
log10(Lithosphere/Biosphere) = log10(178,933.93)
log10(Lithosphere/Biosphere) ≈ 5.25
Therefore, the lithosphere's reservoir of carbon is approximately 10^5.25 or about 177,828 times greater than the biosphere's reservoir of carbon.
Rounding this to the nearest order of magnitude gives an answer of (b) 10⁶.
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how to convert 0.35 as a fraction?
The value 0.35 as a fraction is 7/20.
In mathematics, fractions are defined as part of a whole. A whole can be an object or a group of objects. In real life, if you cut a pie out of the whole pie, that piece becomes part of the pie. Fractions are words of Latin origin. "Fractus" means "broken" in Latin. In ancient times, rest was expressed in words. Later it was introduced in numerical form.
Fractions are also called parts or sections of any quantity. Represented by the symbol '/'. Bachelor/Bachelor For example, 2/4 is the numerator above and the fraction below the denominator. In this article, you will learn the definition of fractions in mathematics, types of fractions, how to convert fractions to decimals, and many solved examples and full explanations
to convert in fraction we will muliply and devide by 100.
.35*100/100 = 7/20
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