Answer:
When you cut the sample size in half while making a statistical inference about the mean of a normally distributed population, the effect on the margin of error depends on the relationship between the sample size and the margin of error. Generally, the margin of error is inversely proportional to the square root of the sample size.
So, if you reduce the sample size by half, it means you are taking a smaller sample, which will result in a larger margin of error. In other words, the margin of error is multiplied by a factor greater than 1.
Among the given options, the correct answer is:
D. The margin of error is multiplied by 2.
This option correctly reflects the relationship between reducing the sample size by half and the resulting increase in the margin of error.
What is the meaning of "[tex] dom(R)=\left \{ u:\exists v(u,v)\in R\right \} [/tex]"?
It means that the domain of the relation [tex]R[/tex] is the set of such elements [tex]u[/tex] for which there exists such an element [tex]v[/tex] that [tex]u[/tex] and [tex]v[/tex] are related.
Which is an exponential function with a y-intercept of (0, 4)?
Help please
Answer:
D) y = 2ˣ + 3-----------------
The y-intercept of (0, 4) means the function has a value of 4 when x = 0.
Verify it with given functions:
A) y = 3x + 1
x = 0 ⇒ y = 3*0 + 1 = 1 ≠ 4, NoB) y = 4ˣ
x = 0 ⇒ y = 4⁰ = 1 ≠ 4, NoC) y = 1ˣ
x = 0 ⇒ y = 1⁰ = 1 ≠ 4, NoD) y = 2ˣ + 3
x = 0 ⇒ y = 2⁰ + 3 = 1 + 3 = 4, Yes3.3 Determine the rule that describes the relationship between x and y values below and then use the rule to calculate the values of n and m. Show all your calculations. X y 1 3 2 5 7 4 9 (T) 5 11 11 m n 33
The values of m and n are 15 and 19, respectively in the given data.
From the given values:
x: 1, 2, 7, 4, 9
y: 3, 5, 11, m, n
Looking at the x-values, we can observe that they are increasing by 1 each time.
Looking at the y-values, we can observe that they are increasing by 2 each time except for the last two values (m and n) which are unknown.
Based on this pattern, we can establish the following equation:
y = 2x + 1
Now, let's calculate the values of m and n using this equation:
For x = 7:
y = 2(7) + 1
y = 14 + 1
y = 15
Therefore, m = 15.
For x = 9:
y = 2(9) + 1
y = 18 + 1
y = 19
Therefore, n = 19.
Hence, the values of m and n are 15 and 19, respectively.
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Find the arithmetic means in the given sequence. 175, ?, ?, ?, 235 a. 185, 195, 205 c. 220, 205, 190 b. 195, 215, 225 d. 190, 205, 220 Please select the best answer from the choices provided A B C D
Answer:
Step-by-step explanation:
To find the arithmetic means in the given sequence, we need to determine the missing numbers between 175 and 235.
Let's calculate the differences between consecutive terms:
1st difference: 235 - 175 = 60
2nd difference: (Next number) - (Previous number) = (Next number) - 235
Since the differences are constant, we can add the same value to each term to find the missing numbers.
Let's calculate the missing numbers using the 1st difference:
175 + 60 = 235
175 + 60 + 60 = 295
175 + 60 + 60 + 60 = 355
Now we have the complete sequence: 175, 235, 295, 355.
To find the arithmetic means, we take the average of consecutive terms:
1st arithmetic mean: (175 + 235) / 2 = 205
2nd arithmetic mean: (235 + 295) / 2 = 265
3rd arithmetic mean: (295 + 355) / 2 = 325
Among the given choices, the correct answer is:
c. 220, 205, 190
This answer represents the correct sequence of arithmetic means between 175 and 235.
School administrators asked a group of students and teachers which of two school logo ideas, logo A or logo B, they prefer. This table shows the results.
Students
Teachers
Total
Logo A
84
21
105
Logo B
16
4
20
Total
100
25
125
Are being a student and preferring logo A independent events?
Why or why not?
• A. No, they are not independent, because P(student) = 0.8 and
P(student | logo A) = 0.8.
• B. No, they are not independent, because P(student) = 0.8 and
P(student logo A) = 0.84.
• C. Yes, they are independent, because P(student) = 0.8 and
P(student logo A) = 0.84.
O D. Yes, they are independent, because P(student) = 0.8 and
P(student | logo A) = 0.8.
The statement, yes, they are independent because P(student) = 0.8 and P(student | logo A) = 0.8.
To determine if being a student and preferring logo A are independent events, we need to compare the probabilities of these events occurring.
The probability of being a student, denoted as P(student), is given as 0.8. This means that out of the total population (125), 80% are students.
The probability of a student preferring logo A, denoted as P(student | logo A), is given as 0.8.
This means that out of the students (100), 80% prefer logo A.
If the events of being a student and preferring logo A are independent, then the probability of a student preferring logo A (P(student | logo A)) should be the same as the probability of being a student (P(student)).
However, in the given options, both options A and D state that P(student | logo A) = 0.8, which is the same as P(student).
This suggests that being a student and preferring logo A are independent events.
Hence, Yes, they are independent because P(student) = 0.8 and P(student | logo A) = 0.8.
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Brynen is driving to a new job five days this week. He drives 27 miles each way. His car gets 35 miles per gallon of gas. How many gallons of gas will he use driving to and from work this week? Round to the nearest tenth.
Brynen will use 7.71 gallons of gas driving to and from work this week.
To calculate the gallons of gas Brynen will use driving to and from work this week, we need to consider the round trip distance and the car's fuel efficiency.
Given:
Brynen drives 27 miles each way to work.
His car gets 35 miles per gallon of gas.
To find the total distance Brynen will travel in a week, we need to calculate the round trip distance for each workday and multiply it by the number of workdays (five days).
Round trip distance = 27 miles (one-way distance) * 2 = 54 miles (round trip distance)
Total distance traveled in a week = 54 miles (round trip distance) * 5 days = 270 miles
Next, we can determine the total gallons of gas Brynen will use using his car's fuel efficiency.
Gallons of gas used = Total distance / Fuel efficiency
Gallons of gas used = 270 miles / 35 miles per gallon
Gallons of gas used ≈ 7.71 gallons (rounded to the nearest tenth)
Therefore, Brynen will use approximately 7.71 gallons of gas driving to and from work this week.
It's important to note that this calculation assumes that Brynen's car maintains a consistent fuel efficiency of 35 miles per gallon throughout the entire week and that no additional driving outside of the work commute is considered. Factors such as traffic, variations in fuel efficiency, or additional trips would affect the actual gas consumption.
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Suppose that the mean daily viewing time of television is 8.35 hours. Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household
(a)
What is the probability that a household views television between 3 and 11 hours a day? (Round your answer to four decimal places.)
(b)
How many hours of television viewing must a household have in order to be in the top 3% of all television viewing households? (Round your answer to two decimal places.)
hrs
(c)
What is the probability that a household views television more than 5 hours a day? (Round your answer to four decimal places.)
Answer:
(a) To find the probability that a household views television between 3 and 11 hours a day, we need to calculate the z-scores for 3 and 11 hours using the formula z = (x - μ) / σ, where μ is the mean and σ is the standard deviation. The z-score for 3 hours is (3 - 8.35) / 2.5 = -2.14 and the z-score for 11 hours is (11 - 8.35) / 2.5 = 1.06. Using a standard normal distribution table, we find that the probability of a z-score being between -2.14 and 1.06 is approximately 0.8209.
(b) To find how many hours of television viewing a household must have in order to be in the top 3% of all television viewing households, we need to find the z-score that corresponds to the top 3% of the standard normal distribution. Using a standard normal distribution table, we find that this z-score is approximately 1.88. Using the formula x = μ + zσ, we can calculate that a household must view television for approximately 8.35 + (1.88 * 2.5) = 12.75 hours to be in the top 3% of all television viewing households.
(c) To find the probability that a household views television more than 5 hours a day, we need to calculate the z-score for 5 hours using the formula z = (x - μ) / σ, where μ is the mean and σ is the standard deviation. The z-score for 5 hours is (5 - 8.35) / 2.5 = -1.34. Using a standard normal distribution table, we find that the probability of a z-score being greater than -1.34 is approximately 0.9099.
Answer:
Step-by-step explanation:
The mean daily viewing time of television is 8.35 hours and the standard deviation is 2.5 hours. We can use a normal probability distribution to answer the following questions about daily television viewing per household:
(a) The probability that a household views television between 3 and 11 hours a day is 0.9772 (rounded to four decimal places).
(b) To be in the top 3% of all television viewing households, a household must have 15.68 hours of television viewing per day (rounded to two decimal places).
The probability that a household views television more than 5 hours a day is 0.8944 (rounded to four decimal places).
I hope this helps! Let me know if you have any other questions.
Find the slope and intercept of line. y=5/4x
Answer:
m = 5/4
Y-intercept: (0,0)
Step-by-step explanation:
The equation is in slope-intercept form y = mx + b
m = the slope
b = y-intercept
Our equation y = 5/4x
m = 5/4
Y-intercept is located at (0,0)
Answer:
the slope is 5/4 and the y-intercept is 0
Step-by-step explanation:
The slope is the number before x.
slope is 5/4The y intercept is the constant term in the equation.
y intercept is 0Info related to the question
The equation I just worked with was given in slope intercept form :
y = mx + bWhere the slope is defined as m and the intercept is defined as b.
Which angle or angles are supplementary to ∠EOF?
Giving brainliest
A. ∠AOB and ∠DOE
B. ∠BOC and ∠EOF
C. ∠COD and ∠AOF
D. ∠FOB and ∠COE
The angles supplementary to ∠EOF are ∠FOB and ∠COE.
What is supplementary angles?Supplementary angles are those angles that sum up to 180 degrees. In
other words, two angles are called supplementary when their measures
add up to 180 degrees.
Therefore, let's find the angles that are supplementary angles to ∠EOF.
Therefore, let's use the angle relationships in the line intersection to find
the angles that are supplementary to ∠EOF.
Hence, the angles supplementary to ∠EOF are ∠FOB and ∠COE
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ABCD is a rhombus with A(-3; 8) and C(5 ; -4). The diagonals of ABCD bisect each other at M. The point E(6; 1) lies on BC. 3.1 3.2 3.3 3.4 A(-3; 8) P D 0 O M TR S B E(6; 1) C(5 ; - 4) Calculate the coordinates of M. Calculate the gradient of BC. Determine the equation of the line AD in the form y = mx + c. Determine the size of 0, that is BAC. Show ALL calculations. T (2 (2 (3 [13
The coordinates of point M are (1, 2).
The gradient of CB is 5.
The equation of line AD in the form y = mx + c is: y = (-1/5)x + 37/5.
To solve the given problem, we can follow these steps:
1. Calculate the coordinates of point M:
Since the diagonals of a rhombus bisect each other, the midpoint of the diagonal AC will give us the coordinates of point M.
Midpoint formula:
x-coordinate of M = (x-coordinate of A + x-coordinate of C) / 2
= (-3 + 5) / 2
= 2 / 2
= 1
y-coordinate of M = (y-coordinate of A + y-coordinate of C) / 2
= (8 - 4) / 2
= 4 / 2
= 2
Therefore, the coordinates of point M are (1, 2).
2. The gradient (slope) of a line passing through two points (x₁, y₁) and (x₂, y₂) can be found using the formula:
Gradient (m) = (-4 - 1) / (5 - 6)
= -5 / -1
= 5
Therefore, the gradient of CB is 5.
3. To find the equation of line AD, we need to calculate the gradient (m) of AD and the y-intercept (c).
Gradient of CB = 5
Gradient of AD = -1/5 (negative reciprocal of 5)
To find the y-intercept (c), we can substitute the coordinates of point A (-3, 8) into the equation y = mx + c and solve for c:
8 = (-1/5)(-3) + c
8 = 3/5 + c
c = 8 - 3/5
c = 40/5 - 3/5
c = 37/5
Therefore, the equation of line AD in the form y = mx + c is:
y = (-1/5)x + 37/5.
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Find the area bounded by the two functions f (x) = sin(2x) + 1 and g(x) = cos(x) − 2 on the
interval [0, 2π]. (do the 2 functions even intersect plesse help - the last person gave me the wrong answer)
Answer:
The area bounded by the two functions f(x) and g(x) on the interval [0, 2π] is 6π.
Step-by-step explanation:
The range of y = sin(2x) is [-1, 1].
As function f(x) = sin(2x) + 1 has been translated 1 unit up, the range of f(x) is [0, 2].
The range of y = cos(x) is [-1, 1].
As function g(x) = cos(x) - 2 has been translated 2 units down, the range of g(x) is [-3, -1].
As ranges of the functions do not overlap, the two functions do not intersect.
As the curve of f(x) is above the x-axis, and the curve of g(x) is below the x-axis, we can integrate to find the area between the curve and the x-axis for each function in the given interval, then add them together.
Note: As g(x) is below the x-axis, the evaluation of the integral will return a negative area. Therefore, we need to negate the integral so we have a positive area (since area cannot be negative).
Area between f(x) and the x-axis[tex]\begin{aligned}A_1=\displaystyle \int^{2\pi}_{0} (\sin(2x)+1)\; \text{d}x&=\left[-\dfrac{1}{2}\cos(2x)+x \right]^{2\pi}_{0}\\\\&=\left(-\dfrac{1}{2}\cos(2(2\pi))+2\pi\right)-\left(-\dfrac{1}{2}\cos(2(0))+0\right)\\\\&=\left(-\dfrac{1}{2}+2\pi\right)-\left(-\dfrac{1}{2}\right)\\\\&=2\pi\end{aligned}[/tex]
Area between g(x) and the x-axisAs the curve is below the x-axis, remember that we need to negate the integral to find the area.
[tex]\begin{aligned}A_2=-\displaystyle \int^{2\pi}_{0} (\cos(x)-2)\; \text{d}x&=-\left[\vphantom{\dfrac12}\sin(x)-2x \right]^{2\pi}_{0}\\\\&=-\left[(\sin(2\pi)-2(2\pi))-(\sin(0)-2(0))\right]\\\\&=-\left[(0-4\pi)-(0-0)\right]\\\\&=-\left[-4\pi\right]\\\\&=4\pi\end{aligned}[/tex]
Area bounded by the two functions[tex]\begin{aligned}A_1+A_2&=2\pi+4\pi\\&=6\pi\end{aligned}[/tex]
Therefore, the area bounded by the two functions f(x) and g(x) on the interval [0, 2π] is 6π.
Help Quickly! Name all the chords.
Giving brainliest
A. OR, OU, OT, TR
B. TR
C. UT,RU, SR, TS, TR
D. UT, RU, SR, TS
Answer:
C.
Step-by-step explanation:
A chord has two endpoints on the circle. A diameter is a special chord bc it also goes through the center.
RT is the diameter and the rest of answer A are radii (plural of radius)
answer B is a chord, the diameter, but thats not the only chord.
answer D are chords but they forgot RT.
So, C. is the best answer.
10
Select the correct answer.
The given equation has been solved in the table.
Step
1
2
3₂
4
5
-
Statement
-7--7
7+7=-7+7
0
2
22-0
2=0
=
In which step was the subtraction property of equality applied?
O A. step 2
OB.
step 3
OC.
step 4
O D.
The subtraction property of equality was not applied to solve this equation.
The step in which the subtraction property of equality was applied to solve the equation is given as follows:
D. The subtraction property of equality was not applied to solve this equation.
What is the subtraction property of equality?The subtraction property of equality states that subtracting the same number from both sides of an equation does not affect the equality, and hence it is used to isolate a variable that is adding on a side of the expression.
For this problem, to remove the term -7, we add 7 to both sides of the expression, hence the addition property of equality was applied.
In the other step, the multiplication property was applied, hence option D is the correct option for this problem.
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Phi can be determined for Cable 2 from
O cos^-1 (Fy/Fx)
sin^-1 (Fy/Fx)
O tan^-1 (Fy/Fx).
Phi (Φ) can be determined for Cable 2 from:
[tex]tan^-1 (Fy/Fx).[/tex]
In trigonometry, [tex]tan^-1 (Fy/Fx)[/tex] represents the inverse tangent function, also known as arctan or atan.
This function is used to find the angle whose tangent is equal to the ratio of the y-component (Fy) to the x-component (Fx) of a vector.
By calculating the ratio Fy/Fx and applying the inverse tangent function, we can determine the angle phi (Φ) for Cable 2.
The value obtained from [tex]tan^-1 (Fy/Fx)[/tex] will represent the angle in radians.
It's important to note that the resulting angle phi (Φ) will provide information about the direction or inclination of Cable 2 based on the given vector components Fy and Fx.
In summary, to determine the angle phi (Φ) for Cable 2, we use the inverse tangent function, represented as[tex]tan^-1 (Fy/Fx),[/tex] which calculates the angle whose tangent is equal to the ratio of the y-component to the x-component of the vector.
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In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 55.7 inches, and standard deviation of 2.6 inches.
What is the probability that the height of a randomly chosen child is between 52.2 and 60.6 inches? Do not round until you get your your final answer, and then round to 3 decimal places.
Answer=
(Round your answer to 3 decimal places.)
Answer: Therefore, the probability that the height of a randomly chosen child is between 52.2 and 60.6 inches is 0.884. Rounded to 3 decimal places, the answer is 0.884.
Step-by-step explanation:We can use the standard normal distribution to find the probability that the height of a randomly chosen child is between 52.2 and 60.6 inches.
First, we need to standardize the values using the formula:
z = (x - mu) / sigma
where:
x = 52.2 and 60.6 (the values we want to find the probability between)
mu = 55.7 (the mean)
sigma = 2.6 (the standard deviation)
For x = 52.2:
z = (52.2 - 55.7) / 2.6 = -1.346
For x = 60.6:
z = (60.6 - 55.7) / 2.6 = 1.885
Next, we use a standard normal distribution table or calculator to find the area between these two z-scores:
P(-1.346 < z < 1.885) = 0.884
Therefore, the probability that the height of a randomly chosen child is between 52.2 and 60.6 inches is 0.884. Rounded to 3 decimal places, the answer is 0.884.
Express y in terms of x if Log 10 x + Log 10 ( Y )= 2 Log 10 (x+1)
Identify the new coordinates of polygon
ABCD after a translation of 2 units down
and 3 units right.
A. A "(-6, -5)
B. D'(2,-5)
C. C (2.0)
D. D(5,-5)
E. C'(-1,0)
F. A (-3,-5)
G. B'(-5, 0)
H. B (-2, 0)
Please help
The translated coordinates are:
A: A'(-6, -5) ⇒ A''(-3,-7)
B: D'(2,-5) ⇒ D''(8, -7)
C: C (2, 0) ⇒ C'(5, -2)
D: D(5,-5) ⇒ D'(8, -7)
E; C'(-1,0) ⇒ C''(2, -2)
F: A (-3,-5) ⇒ A'(0, -7)
G: B'(-5, 0 ) ⇒ B''(-2, -2)
H: B (-2, 0) ⇒ B'(1, -2)
Here,
We have to apply a translation of 2 units down and 3 units right to these coordinates.
Translation means moving the entire polygon in a particular direction by a certain distance.
To apply the translation,
Add the same amount of distance to the x-coordinate of each vertex for the rightward motion, and subtract the same amount of distance from the y-coordinate of each vertex for the downward motion.
In this case,
the translation is 2 units down and 3 units right.
So the new coordinates will be:
A: A'(-6, -5) ⇒ A'( -6+ 3, -5-2)
= A''(-3,-7)
B: D'(2,-5) ⇒ D'(5+3, -5 -2 )
= D''(8, -7)
Similarly apply for each coordinates we get,
C: C (2, 0) ⇒ C'(5, -2)
D: D(5,-5) ⇒ D'(8, -7)
E; C'(-1,0) ⇒ C''(2, -2)
F: A (-3,-5) ⇒ A'(0, -7)
G: B'(-5, 0 ) ⇒ B''(-2, -2)
H: B (-2, 0) ⇒ B'(1, -2)
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Use the following information to determine tan(2x). tan(x) = -2÷square root of 2 and sin(x) is negative
Answer:
tan(2x) = 2√2
Step-by-step explanation:
You want tan(2x) when tan(x) is -2/√2 and x is a 4th-quadrant angle.
Double angleThe tangent double-angle identity is ...
tan(2x) = 2tan(x)/(1 -tan(x)²)
For tan(x) = -2/√2, this gives ...
tan(2x) = 2(-2/√2)/(1 -(-2/√2)²) = -2√2/(1 -2)
tan(2x) = 2√2
<95141404393>
PLEASE HELP
A right cylinder has a diagonal length of 37 and a total surface area of 492π.
What is the height of the cylinder?
a.35
b.42
c.25
d.17
e.32
The height of the cylinder is 25.
Option C is the correct answer.
We have,
To find the height of the right cylinder, we need to use the given information of the diagonal length and the total surface area.
The diagonal length of a right cylinder can be found using the formula:
diagonal = √(height² + radius²)
Given that the diagonal length is 37, we can set up the equation:
37 = √(height² + radius²)
We also know that the total surface area of a right cylinder is given by:
surface area = 2πrh + 2πr²
Given that the total surface area is 492π, we can set up the equation:
492π = 2πrh + 2πr²
Simplifying the surface area equation, we have:
246 = rh + r²
Now we have a system of equations:
37 = √(height² + radius²)
246 = rh + r²
Since we only need to find the height of the cylinder, we can focus on the first equation:
37 = √(height² + radius²)
Squaring both sides of the equation, we get:
37² = height² + radius²
1369 = height² + radius²
Substituting the second equation (246 = rh + r²) into the equation above, we have:
1369 = height² + (246 - rh)
Simplifying further, we get:
1369 = height² + 246 - rh
Now, let's analyze the answer options:
a. 35
b. 42
c. 25
d. 17
e. 32
We need to substitute each value into the equation and check if it satisfies the equation.
After checking each option, we find that the height that satisfies the equation is:
c. 25
Therefore,
The height of the cylinder is 25.
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Solve the inequality for w.
w+7<20
Simplify your answer as much as possible.
0
Answer:
w<13
Step-by-step explanation:
Works identically to a normal single-variable equation.
Subtract 7 on both sides in order to isolate w--->w+7-7<20-7
The answer (which cannot be simplified any further) is w<13.
Answer:
w < 1`3
Step-by-step explanation:
Isolate the variable w on one side of the inequality sign.
w+7<20
w<20 - 7
w<13.
In each rule , copy the chart and fill in the missing parts
Answer:
7. 14
15. 30
28. 56
32. 64
18 36
x 2x
1/2y. y
2x. 4x
x+3 2x+9
Step-by-step explanation:
each out is double the in
In circle K with m/JKL = 74° and JK = 4, find the area of sector
JKL. Round to the nearest hundredth.
Answer:
10.33 square units
Step-by-step explanation:
Area of the sector:
∠JKL = Ф= 74°
JK = r = 4
[tex]\boxed{\text{\bf Area of sector = $ \dfrac{\theta}{360}\pi r^2$}}[/tex]
Ф is the central angle of the sector.
r is the radius
[tex]\sf Area \ of \ the \ sector = \dfrac{74}{360}*3.14*4*4[/tex]
= 10.33 square units
The graph below shows the solution to which system of inequalities?
a food truck sells two types of meals: a burrito bowl for $3 and a salad for $6. Yesterday, the food truck sold a total of 100 meals for a total of $396 Write the equations to find the number of burrito bowls and salads sold. Let x be the number of burrito bowls sold and y be the number of salads sold. Do not solve
Answer: The pair of equations required this the given question is x+y=100 and 3x+6y=396
Step-by-step explanation:
If x denotes the number of burritos and y denotes the number of salads sold. then,
1. x+y =100 (as there are a total of 100 meals sold)
2. 3x+6y=396(as the cost of each burrito is $3 and cost of each salad is $6, the total cost of the meal is $396)
Hence, The pair of equations required this the given question is x+y=100 and 3x+6y=396
The patient is to receive 250ml of D5W with 10 units of oxytocin (Pictocin) IV at the rate of 0.002 units/min. How many ml per hour.
Answer:
0.5ml/hr
Step-by-step explanation:
Given:
Infusion rate: 0.002 units/min
To convert the infusion rate from units/min to ml/hr, we need to know the flow rate conversion factor specific to the medication and solution being administered.
In this case, we have the information that the patient is receiving 10 units of oxytocin (Pictocin) in 250 ml of D5W solution.
To calculate the ml/hr rate, we can use the following formula:
ml/hr = (Infusion rate in units/min * Volume in ml) / Time in min
ml/hr = (0.002 units/min * 250 ml) / 1 min
ml/hr = 0.5 ml/min
Therefore, the infusion rate of 0.002 units/min is equivalent to 0.5 ml/hr.
15 points and branliest
find m and n
Answer:
14
Step-by-step explanation:
Assuming you meant to find MN.
Given that MN is parallel to the bases of the given trapezoid, and is connected to the midpoints of both sides, we can infer that MN is the midsegment of the given trapezoid.
The length of a midsegment is given by half the sum of the bases.
Therefore, MN = (18 + 10)/2 = 28/2 = 14
Find the area of each sector.
16) r= 16 mi, 0 = 150°
25m
3
mi²
40T
3
mi²
67 mi²
A
170065
To find the area of a sector, you can use the formula:
Area of Sector = (θ/360) * π * r^2
where θ is the central angle in degrees, r is the radius, and π is a mathematical constant approximately equal to 3.14159.
Let's calculate the areas for the given sectors:
r = 16 mi, θ = 150°
Area of Sector = (150/360) * π * (16 mi)^2
= (5/12) * π * 256 mi^2
≈ 334.930 mi^2
Therefore, the area of sector 16 is approximately 334.930 square miles.
PLS HELP THANK YOUUUUUUU
Which statement best describes the possible value of
the median time of students riding the bus to school?
✓ The median time is less than 25 minutes.
*
The median time is exactly equal to 25 minutes.
The median time is approximately equal to 25
minutes.
The median time is greater than 25 minutes.
ANSWER IS A!!
Answer:
Step-by-step explanation:
The median time is less than 25 minutes
Convert the rectangular coordinates (–6, 6) to polar coordinates.
Answer: A Polar is (6√2, [tex]\frac{3\pi }{4}[/tex])
Step-by-step explanation:
Draw a line to point (see image). You need to find the length of that line and then the angle. Polar(length, angle)
Using pythagorean theorem
length² = (6)² + (-6)²
length² = 36 +36
length =√72
length = [tex]\sqrt{36 *2}[/tex]
length = 6√2
To find angle:
The triangle size is 6-6-6√2 Let's proportionally shrink so we can use unit circle numbers to figure angle. Becomes: 1-1-√2
So when we do sin x = opp/adj
sin x = [tex]\frac{1}{\sqrt{2} }[/tex] >get rid of radical on bottom
sin x = [tex]\frac{\sqrt{2} }{2}[/tex] > when is sin = [tex]\frac{\sqrt{2} }{2}[/tex] This happens at [tex]\frac{\pi }{4}[/tex] but we are in the 2nd quadrant so the angle is [tex]\frac{3\pi }{4}[/tex]
Polar is (6√2, [tex]\frac{3\pi }{4}[/tex])
The polar coordinates are (6([tex]\sqrt[]{2}[/tex], 3pi/4).
Rectangular coordinates are in the form of (x, y) and Polar coordinates are expressed in the form of (r, [tex]\theta[/tex]).
Relation between polar coordinates and rectangular coordinates-x = r cos([tex]\theta[/tex]), y = r sin([tex]\theta[/tex]) and x^2 +y^2 =r^2 ...(1)
So by using above formulas we can solve our question.
Here , x= -6 and y= 6
r^2 = (-6)^2 +(6)^2
=72
=>r = 6([tex]\sqrt[]{2}[/tex])
Put the values of x and y in the mentioned formula in eq(1)
-6 = 6([tex]\sqrt[]{2}[/tex] )cos[tex]\theta[/tex]
6 = 6([tex]\sqrt[]{2}[/tex] )sin([tex]\theta[/tex]),
=>-1/([tex]\sqrt[]{2}[/tex] = cos([tex]\theta[/tex]) , 1/[tex]\sqrt[]{2}[/tex]= sin[tex]\theta[/tex]
Here cos is negative and sin is positive so it lies in 2nd quadrant
so here [tex]\theta[/tex] lies between [tex]\frac{\pi}{2} \leq\theta\leq\pi[/tex]
[tex]\theta[/tex]= π-π/4
=3π/4
So,(r, [tex]\theta[/tex]) = ( 6√2, [tex]\frac{3\pi}{4}[/tex] )