The requried, Gage stocks Pond A with 15 bass and 45 bluegills.
What is equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
Let x be the number of basses in Pond A.
Then the number of bluegills in Pond A is 60 - x.
According to the problem, Pond B has twice the number of bass as Pond A, so there are 2x bass in Pond B.
Similarly, Pond B has six times the number of bluegills as Pond A, so there are 6(60 - x) bluegills in Pond B.
The total number of fish in Pond B is 300, so we can set up an equation:
2x + 6(60 - x) = 300
Simplifying and solving for x, we get:
2x + 360 - 6x = 300
-4x = -60
x = 15
Therefore, Gage stocks Pond A with 15 basses and 45 bluegills.
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What is the total number of pencils that Mr. Moretti gives to his students if he puts 3 mechanical pencils in each bag?
Answer:
it depends on how many students?
Step-by-step explanation:
Mr. Salinas told his class that 20% of their
test is open-ended. There are 10 open-ended
questions. How many total questions are on
the test?
Answer:
Step-by-step explanation:
If 20% of the test is made up of 10 open-ended questions, we can set up a proportion to find the total number of questions on the test.
Let x be the total number of questions on the test.
We can write the proportion as:
open-ended questions/total questions = 20%/100%
or
10/x = 20/100
To solve for x, we can cross-multiply to get:
10 * 100 = 20 * x
1000 = 20x
x = 50
Therefore, there are 50 total questions on the test.
Which are true? Step by step.
The true statements about the populations of the town based on the linear equations in the table are;
The population of Troy is decreasingThe populations of Rye and Smithfield are each increasingWhat is a linear equation?
A linear equation is an equation of the form; y = m·x + c, where the slope of the graph of the equation is m and the y-intercept of the graph is c.
The analysis of the equations in the table are as follows;
Equation for Pinehill is; P = 800 - 20t
The slope of the above equation is; -20 and the y-intercept is 800. The negative sign for the slope indicates that the population is decreasing;
Therefore, the initial population of 800 in Pinehill is decreasing at a rate of 20 per unit time, t
Population for Rye; P = 500 + 15t
The population of Rye is increasing at a rate of 15 per unit time
Population for Smithfield; P = 10t + 950
The population of Smithfield is increasing at a rate of 10 per unit time
Population for Troy; P = -50·t + 600
The -50 indicates that population is decreasing at a rate of 50 per unit time
The true statements are therefore;
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A fair die has 12 sides and they are labeled 1, 2, 3, …, 12. All answers should be in fraction form.
What is the probability of rolling the die and it lands with the 3 face on top?
What is the probability of rolling the die and it lands with the 3 or a 7 face on top?
What is the probability of rolling the die and it lands with a 15 face on top?
As we discovered in chapter, there is a 1/12 chance of getting a 3.
What is a probability example?By reducing the number of successful effects by the total amount of possible outcomes, probability—the chance that a will occur—is determined. A coin toss serves as the most fundamental example. There are just two results when users flip a coin: either it shows up heads or tails.
There are 12 potential results in total because the die has 12 sides.
(1) Since there is only one side of the die with a 3 on it and all sides are equally probable, the chance of rolling the die and having the 3 face on top is 1/12.
(2) The likelihood that the die will fall on top with a 3 or a 7 is calculated as the product of the odds of rolling a 3 and a 7 minus the likelihood of simultaneously rolling a 3 and a 7. (which is zero, since the die has only one side).
As we discovered in chapter, there is a 1/12 chance of getting a 3. (1). Given that the dice only has a 7 on one side, the likelihood of getting a 7 is also 1/12. The likelihood of tossing the dice and having the 3 or 7 face up is therefore:
1/12 + 1/12 - 0 = 1/6
(3) Since the die doesn't have a face marked "15," there is no chance that tossing the die will result in a 15 face landing on top.
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Sherry has a gift card that she plans to use for buying individual songs and movies. . Her gift card is for $25. • Movies cost $5.99 to download and individual songs cost $0.99 to download. • She wants to buy at least 2 movies and at least 8 songs. Which system of inequalities represents the number of movies, x, and the number of songs, y, that Sherry can download?
A X≤2 y≤ 8 5.99x + 0.99y ≥ 25
B. X > 2 y > 8 5.99x +0.99y > 25
C. x ≥ 2 y28 5.99x + 0.99y ≤ 25
D. x < 2 y < 8 5.99x + 0.99y < 25
Answer: Sherry wants to buy at least 2 movies and at least 8 songs, and her gift card has a value of $25. To represent this information as a system of inequalities, we can use the following:
Let x be the number of movies Sherry buys, and y be the number of songs she buys.
The cost of buying x movies is 5.99x dollars, and the cost of buying y songs is 0.99y dollars. Since Sherry's gift card is worth $25, we have the inequality:
5.99x + 0.99y ≤ 25
In addition, Sherry wants to buy at least 2 movies, which means x must be greater than or equal to 2. She also wants to buy at least 8 songs, which means y must be greater than or equal to 8. This gives us the inequalities:
x ≥ 2
y ≥ 8
Therefore, the system of inequalities that represents the number of movies and songs that Sherry can download is:
x ≥ 2
y ≥ 8
5.99x + 0.99y ≤ 25
The answer is (A).
Step-by-step explanation:
Which of the following is the value of sin -1(square root 2/2)
The value of sin -1(square root 2/2) is π/4 or 45 degrees.
Describe Inverse Sine?Inverse sine, also known as arcsine, is a trigonometric function that is the inverse of the sine function. It is denoted as sin^-1(x), where x is a number between -1 and 1.
The inverse sine function is used to find the angle in a right triangle that has a given sine value. In other words, if we know the ratio of the length of the side opposite an angle to the length of the hypotenuse in a right triangle, we can use the inverse sine function to find the measure of that angle.
The inverse sine function returns an angle in radians, which can be converted to degrees if needed. It has a domain of -1 ≤ x ≤ 1 and a range of -π/2 ≤ sin^-1(x) ≤ π/2.
Like other inverse trigonometric functions, the inverse sine function is a multivalued function. This means that for a given value of x, there can be multiple angles that satisfy sinθ = x. To address this, the principal value of the inverse sine function is defined as the angle between -π/2 and π/2 that satisfies sinθ = x.
The inverse sine function has many applications in mathematics, physics, engineering, and other fields. It is used in the calculation of angles in a variety of contexts, such as in the design of structures and in the analysis of wave phenomena. It is also used in calculus and other advanced mathematics courses to solve integrals and differential equations.
To see why, we can use the definition of the inverse sine function, which gives us the angle whose sine is equal to the input value. In this case, we have:
sin -1(square root 2/2) = θ
where sin(θ) = square root 2/2.
We know that the sine of 45 degrees (or π/4 radians) is also equal to square root 2/2. Therefore, we have:
sin(45 degrees) = square root 2/2
Taking the inverse sine of both sides gives us:
sin -1(square root 2/2) = 45 degrees = π/4
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Please helpppppppppppppppppppppppppppppppppppppppppppppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
60
Step-by-step explanation:
a tringle always adds ups to 180 add them then subtract.
Question 10 Leon has four barrels, each with a mass of 30kg to the nearest 10 kg. (a) Find the minimum possible mass of the four barrels. (b) Find the maximum possible mass of the four barrels
Answer:
Step-by-step explanation:
(a) To find the minimum possible mass of the four barrels, we want to arrange them in a way that minimizes the total mass. One way to do this is to put the two lightest barrels together and the two heaviest barrels together. This way, the total mass is minimized because the lighter barrels balance out the heavier ones.
So, the minimum possible mass of the four barrels is:
2(30 kg) + 2(30 kg) = 120 kg
(b) To find the maximum possible mass of the four barrels, we want to arrange them in a way that maximizes the total mass. One way to do this is to put the heaviest barrel with the lightest barrel and the other two barrels together. This way, the total mass is maximized because the heaviest and lightest barrels are paired together, making the total mass greater than if they were all paired together.
So, the maximum possible mass of the four barrels is:
30 kg + 90 kg + 30 kg + 30 kg = 180 kg
The ratio of berries to oranges is 10:1. If there are 9 oranges, how many berries are there?
Answer:
90 berries
Step-by-step explanation:
X-y=4
Work out the value of 3(x-y)
The value of the expression 3 (x - y) is 12
How to determine the value of the expressionFrom the question, we have the following parameters that can be used in our computation:
x - y = 4
Multiply both sides of the equation by 3
So, we have the following representation
3 * (x - y) = 4 * 3
Evaluate the products
This gives
3 (x - y) = 12
Hence, the soluton of 3 (x - y) is 12
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Please help i need the answer
The individual events are dependent. The probability of the combined event is of:
0.0137 = 1.37%.
What is the hypergeometric distribution formula?The mass probability formula is presented as follows:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes.N is the size of the population.n is the size of the sample.k is the total number of desired outcomes.As the students are chosen without replacement, the events are dependent.
The parameter values for this problem are given as follows:
N = 72 students, k = 18 seniors, n = sample size of 3.
The probability of three seniors is P(X = 3), hence:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]P(X = 3) = h(3,72,3,18) = \frac{C_{18,3}C_{54,0}}{C_{72,3}} = 0.0137[/tex]
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sammy has a bag of sweets. 2/5 of the sweets are fizzy. of these fizzy sweets, 4/6 are orange. what fraction of the sweets are frizzy and orange.? if there are 60 sweets altogether, how many are fizzy and orange
There are 16 sweets that are fizzy and orange and the fraction is 4/15
What fraction of the sweets are frizzy and orange.?From the question, we have the following parameters that can be used in our computation:
Fizzy = 2/5
Orange = 4/6 of Fizzy
So, we have
Orange = 2/5 * 4/6
Orange = 4/15
How many are fizzy and orangeUsing (a) as a guide, we have
Fizzy and orange = 4/15 * 60
Fizzy and orange = 16
Hence, the fizzy and orange is 16
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Helppppp. John says that the function representing the table is
y = -6x + 510
Jim says that the function representing the table is
y = 6x + 51
Who’s is correct
The correct equation of the table is John's
How to determine the correct personFrom the question, we have the following parameters that can be used in our computation:
John: y = -6x + 510
Jim: y = 6x + 51
From the table (see below), we have the following x and y values
x = 0, 1, 2, 3, 4
y = 510 504 498 492 486
Next, we test the equations:
John: y = -6x + 510
Substitute the known values in the above equation, so, we have the following representation
y = -6(0) + 510 = 510
y = -6(1) + 510 = 504
y = -6(2) + 510 = 498
y = -6(3) + 510 = 492
y = -6(4) + 510 = 486
Jim: y = 6x + 51
y = 6(0) + 51 = 51
y = 6(1) + 51 = 57
y = 6(2) + 51 = 63
y = 6(3) + 51 = 69
y = 6(4) + 51 = 75
The above shows that John's y values corresponds to the table of values added at the end of the equation.
Jim would be correct if the table of values is:
x = 0, 1, 2, 3, 4
y = 51 57 63 69 75
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Complete question
Given the table of values
x y
0 510
1 504
2 498
3 492
4 486
John says that the function representing the table is y = -6x + 510
Jim says that the function representing the table is y = 6x + 51
Who’s is correct?
You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 50 night students, and the sample mean GPA is 2.83 with a standard deviation of 0.82. You sample 30 day students, and the sample mean GPA is 3.06 with a standard deviation of 0.45. Test the claim using a 10% level of significance. Assume the population standard deviations are unequal and that GPAs are normally distributed. Give answer to at least 4 decimal places.
What are the correct hypotheses?
Based on the hypotheses, find the following:
Test Statistic =
P-Value =
We can conclude that -
The p - value is 0.89.The result is not significant at p < 0.10.What is test static?A test statistic measures the degree of agreement between a sample of data and the null hypothesis.
Given is that you are testing the claim that the mean GPA of night students is different from the mean GPA of day students
T scores (or T statistics) are used to test the difference between a
sample mean and another sample mean or some theoretical value.
So, we can write the T score as -
T{score} = 3.06 - 2.83
T{score} = 0.23
DF = 0.82 - 0.45
DF = 0.37
Level of significance = 10%
We can write the p - value as -
p - value = 0.89
Also -
The result is not significant at p < 0.10.
Therefore, we can conclude that -
The p - value is 0.89.The result is not significant at p < 0.10.To solve more questions on test statistics, visit the link below
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whats the value of z?
Answer:
2.7 cm
Step-by-step explanation:
We have the relationship
tan 56 = 4/z
Therefore z = 4/ (tan 56) = 4/1.48256 = 2.698
= 2.7 cm correct to one decimal place
Find domain Range Y-intercept X- intercept Vertical asymptote Horizontal asymptote Pic attached below note write domain and range in interval notation
The key features of this rational function include the following:
Domain: (-∞, 2) ∪ (2, ∞)
Range: (-∞, 1) ∪ (1, ∞)
Y-intercept: 1.
X-intercept: 2.
Vertical asymptote: x = -2.
Horizontal asymptote: y = -1.
What is a rational function?In Mathematics, a rational function simply refers to a type of function which is expressed as a fraction. This ultimately implies that, a rational function is composed of two (2) main parts and these include the following:
NumeratorDenominatorAdditionally, the vertical extent of any graph of a rational function represents all range values and they are always read and written from smaller to larger numerical values, and from the bottom of the graph to the top.
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Mario & Luigi decide to invest in a Mushroom business, Mario invests $500,000 whilst Luigi invests $350,000. After their first year of business, they agree to split the profits within the same ratio of their initial investments. If the business made $3 million in profits, how much will Luigi receive?
a) a day
b) an hour
The $500,000 and $350,000 invested by Mario and Luigi, and the $3 million profit from the business in the first year indicates;
a) The amount Luigi made a day is about $3,384.4
b) The amount Luigi made per hour is about $141
What is a business profit?Profit is the revenue, less costs, expenses and tax.
The amount Mario invests = $500,000
Amount Luigi invests = $350,000
The ratio in which the profit was split after their first year = Within the same ratio of their initial investments
The amount of profit made by the business = $3 million
The ratio of their initial investment = 500,000 : 350,000 = 10 : 7
Therefore, the ratio in which the profit is split = 10 : 7
The amount Luigi received in a year = (7/(10 + 7)) × 3 = 1235294 2/17
The time unit conversion from year to day is presented as follows;
Number of days in a year = 365 days
The amount Luigi received peer day = (1235294 2/17)/365 = 3384 456/1241
3384 456/1241 ≈ 3384.4
The amount Luigi received per day = $3,384.4b) The number of hours in a day = 24 hours
Amount Luigi received per hour = (3384 456/1241)/24 = 141 19/1241
141 19/1241 ≈ 141
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In the figure below, N is between M and O, and O is between N and P. If MP= 17, NP = 15, and NO=7, find MO.
Answer:
MO = 9 units------------------------------
As per question we have:
Point N is between M & O and point O is between N & P. It means M and P are endpoints and the order of the points is M, N, O and P.Find the required segment length using segment addition rule:
MP = 17, NP = 15 ⇒ MN = MP - NP = 17 - 15 = 2, thenMN = 2, NO = 7 ⇒ MO = MN + NO = 2 + 7 = 9Olivia planted bean seeds. After they started to grow, she measured their heights and recorded the heights in the line plot below. image a97cc9c5036040c58918973d56401d70 How many plants were less than 3 cm tall? A. 1 B. 18 C. 14 D. 3 answers
The height of the balloon is 1.3 miles above the ground.
What is height?Height is the measure of vertical distance, either how "tall" something or someone is, or how "high" the point is. For example, a person's height is typically measured using a stadiometer and is recorded in centimeters or feet and inches. The height of a mountain is usually measured in meters or feet. In aviation, height is measured from the surface of the earth, either above ground level (AGL) or above mean sea level (AMSL).
The answer to this question can be found by using the trigonometric formula of Tangent. To calculate the height of the balloon, we must find the length of the hypotenuse in the triangle formed by the two towns and the balloonist.
Using the formula for tangent, we can calculate the length of the hypotenuse. The formula is:
tan (angle) = opposite side/adjacent side
In this case, the opposite sides are the two towns, and the adjacent side is the height of the balloon.
For the first town, the formula is:
tan 36° = 1.6/x
Solving for x, we can calculate the length of the hypotenuse for the first town to be 2.8 miles.
For the second town, the formula is:
tan 32° = 1.6/x
Solving for x, we can calculate the length of the hypotenuse for the second town to be 2.9 miles.
Since the hypotenuse is the total distance between the two towns and the balloonist, the height of the balloon can be calculated by subtracting the total length of the two towns (1.6 miles) from the hypotenuse of the second town (2.9 miles).
The height of the balloon is 1.3 miles above the ground.
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Answer:
What is height?
Height:
When a rectangle is drawn with horizontal and vertical sides, the word height makes it clear which dimension is meant; height labels how high (how tall) the rectangle is. That makes it easy to indicate the other dimension—how wide the rectangle is from side to side—by using the word width. And if the side-to-side measurement is greater than the height, calling it the length of the rectangle is also acceptable, as it creates no confusion.
The answer to this question can be found by using the trigonometric formula of Tangent. To calculate the height of the balloon, we must find the length of the hypotenuse in the triangle formed by the two towns and the balloonist.
Using the formula for tangent, we can calculate the length of the hypotenuse. The formula is:
tan (angle) = opposite side/adjacent side
In this case, the opposite sides are the two towns, and the adjacent side is the height of the balloon.
For the first town, the formula is:
tan 36° = 1.6/x
Solving for x, we can calculate the length of the hypotenuse for the first town to be 2.8 miles.
For the second town, the formula is:
tan 32° = 1.6/x
Solving for x, we can calculate the length of the hypotenuse for the second town to be 2.9 miles.
Since the hypotenuse is the total distance between the two towns and the balloonist, the height of the balloon can be calculated by subtracting the total length of the two towns (1.6 miles) from the hypotenuse of the second town (2.9 miles).
The height of the balloon is 1.3 miles above the ground.
Gabe contributes 15% of the total cost of the individual health care coverage his company offers. He pays $28. 80 per week towards this contribution. What is the total value of gabe's health care coverage for the year?.
For the given percenatge of total cost, the total value of Gabe's health care coverage for the year is $9,984.
What is percentage?
Percentage is a way of expressing a fraction or a part of a whole as a portion out of 100. It is represented by the symbol "%".
We can start by using the information given to determine the total cost of the health care coverage. Let's call this cost "C". Since Gabe contributes 15% of this cost and pays $28.80 per week, we can write:
0.15C = 28.80
To solve for C, we can divide both sides by 0.15:
C = 28.80 / 0.15
= 192
So the total cost of the health care coverage is $192 per week. To find the total value of Gabe's health care coverage for the year, we need to multiply this weekly cost by the number of weeks in a year.
Assuming there are 52 weeks in a year, we have:
Total value of Gabe's health care coverage = 192 x 52
= 9984
Therefore, the total value of Gabe's health care coverage for the year is $9,984.
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A small factory makes bars of soap. On any day, the total cost to the factory,
£
y
, of making
x
bars of soap is modelled to be the sum of two separate elements:
- A fixed cost
- A cost that is proportional to the number of bars of soap that are made that day
The bars of soap are sold for
£
2
each. It can be shown that
y
=
0.84
x
+
428
.
Assuming that each bar of soap is sold on the day it is made, find the least number of bars of soap that must be made on any given day for the factory to make a profit that day.
The least number of bars of soap that must be made on any given day for the factory to make a profit that day is 369 bars.
What is Equation ?Two expressions in an equation are combined using the equal symbol ("="). The "left-hand side" and "right-hand side," respectively, of the equation refer to the two expressions that are on either side of the equals sign. Usually, we consider an equation's right side to be zero.
We have the equation ,
y = 0.84 x + 428
Let n be the least number of bars required to make a profit.
then,
2n = 0.84n + 428
dividing both sides by 2
n = 0.42n + 214
0.58n = 214
n = 368.96
n ≈ 369 bars
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enVision® STEM Of 36 chemical elements, 2 are named for women scientists and 25 are named for places. What fraction of these 36 elements are named for women or places? Show your work.
The fraction of these 36 chemical elements that are named for women or places is 27/36 or by simplifying it, 3/4.
What is the fraction?A fraction is defined as a mathematical concept that can be used to express a portion of a whole or a number that can be written as the ratio of two integers.
Here,
To find the fraction of the 36 chemical elements that are named for women or places, we need to add the number of elements named for women (2) and the number of elements named for places (25), and then divide by the total number of elements (36),
Fraction = (2 + 25) / 36 = 27 / 36
Therefore, the fraction of these 36 chemical elements that are named for women or places is 27/36 or simplify it, 3/4.
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Find the remainders when 2^50 and 41^65 are divided by 7?
Answer:
it dude
Step-by-step explanation:
use internet
Lee Ann bought 2 cartons of yogurt. She ate 1/8 of a carton of yogurt each day.
How many days did it take Lee Ann to eat all of the yogurt in the 2 cartons?
Answer:
B 16
Step-by-step explanation:
It will take 8 days to eat one carton so 2 cartons will be 16 days.
b-3. which of the following statements is most accurate with respect to outliers in this example? multiple choice 3 the boxplot and z-scores provide consistent results. the boxplot is more reliable because the distribution is not symmetric. the z-scores are more reliable because the distribution is not symmetric. the z-scores are more reliable because the distribution is symmetric.
The correct statements are -
the boxplot and z-scores provide consistent resultsthe z-scores are more reliable because the distribution is symmetric.What are outliers?In statistics, an outlier is a data point that differs significantly from other observations. An outlier may be due to a variability in the measurement, an indication of novel data, or it may be the result of experimental error; the latter are sometimes excluded from the data set.
Given is to identify which of the following statements is most accurate with respect to outliers in this example.
The correct statements are -
the boxplot and z-scores provide consistent resultsthe z-scores are more reliable because the distribution is symmetric.Therefore, the correct statements are -
the boxplot and z-scores provide consistent resultsthe z-scores are more reliable because the distribution is symmetric.To solve more questions on outliers, visit the link -
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CAN SOMEONE HELP WITH THIS QUESTION?✨
The marginal revenue at 8 units is given as follows:
MR(8) = 288 dollars per unit.
How to obtain the marginal revenue?The revenue function is defined as follows:
R(q) = -7q² + 400q.
The marginal revenue function is the derivative of the revenue function, hence it is obtained as follows:
MR(q) = -14q + 400.
At 8 units, the marginal revenue is found with the numeric value of MR(q) at q = 8, hence:
MR(8) = -14(8) + 400 = 288 dollars per unit.
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Ocupó la respuesta de la página 153 del ejercicio 4?
On dividing 153 by 4, we get the value as 38[tex]\frac{1}{4}[/tex].
What is algebraic expression?An algebraic expression is a combination of terms both constants and variables. For example -
2x + 3y + z
3x + y
Given is to find the equivalent value for the division as -
"153 ÷ 4"
On dividing 153 by 4, we can write the result as follows -
{x} = 153/4
{x} = 38.25
{x} = 38[tex]\frac{1}{4}[/tex]
Therefore, On dividing 153 by 4, we get the value as 38[tex]\frac{1}{4}[/tex].
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{Question in english -
What is the remainder when 153 is divided by 4?}
Please help this is due soon!
Use the lucky guess method to find the general equation of
[tex]\frac{dy}{dt} = y + 3t[/tex]
The solution to the ordinary differential equation y' - y = 3 · t is the equation [tex]y(t) = C\cdot e^{t} + A\cdot t + B[/tex], where C, A and B are real numbers.
How to determine the general solution to a first order linear non-homogeneous ordinary differential equation
Differential equations are equations that involves functions and its derivatives. In this case we have an example of a first order linear non-homogeneous ordinary differential equation, whose standard form is introduced below:
y' - y = 3 · t
Given the linearity of the differential equation, the solution of the differential equation is the sum of the homogeneous component and the particular component. First, we must determine the homogeneous component:
y' - y = 0
y' = y
dy / dt = y
dy / y = dt
∫ dy / y = ∫ dt
ln y = t + C
[tex]y = C \cdot e^{t}[/tex], where C is the integration constant.
Second, find the particular component:
f(t) =3 · t → yP(t) = A · t + B, where A, B are real coefficients.
Third, write the complete solution:
[tex]y(t) = C\cdot e^{t} + A\cdot t + B[/tex]
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Myles writes down the distance readings from his car at the start and end of a journey.
Start of journey 12468
End of journey. 12845
Myles knows that the cost of petrol for this journey is 13p per mile.
Work out the total cost of the petrol used for this journey.
Give your answer in pounds.
Distance reading at the start of journey = 12468
Distance reading at the end of the journey = 12845
Distance traveled in the journey = 12845 - 12468 = 377 miles
Cost of petrol per mile = 13p
Cost of petrol for the journey = 13 × 377 = 4901p
Since one pound is one hundred pence, 4901p in pounds will be 4901/100 = 49.01 pounds
Cost of petrol used in the journey is 49.01 pounds
Write a PYTHON program that:
1) Asks the user to input a sequence of comma separated numbers, e.g., 4,6,7,454,78 (no space in between)
2) Transforms the input string into a list using the function split(). For example, userstr.split(',') will split the string userstr at each ',' and return a list of separated items.
3) Checks whether the user input is all-digit (use .isdigit() function). If yes, go to next step; if not, let the user try until they get it right.
4) Converts all items in the list into integer
5) Adds all numbers together and return the sum.
Answer:
while True:
user_input = input("Please enter a sequence of comma-separated numbers: ")
if user_input.replace(",", "").isdigit():
break
print("Invalid input! Please try again.")
num_list = user_input.split(",")
num_list = [int(num) for num in num_list]
total_sum = sum(num_list)
print("The sum of the numbers is:", total_sum)
Step-by-step explanation:
This program uses a while loop to repeatedly ask the user for input until they provide a valid sequence of comma-separated numbers (all-digit input). The .isdigit() function is used to check if the input is all-digit. If the input is valid, the program splits the input string at each ',' using the .split() function, converts each item in the resulting list into an integer using list comprehension, then adds all numbers together using the sum() function. Finally, the program outputs the total sum.