Answer:
(7.5, 2.5)
Step-by-step explanation:
Given the following information ;
Mean hours (x) = 6
Standard deviation = 2.5 hours
If each time is increased by 1.5 hours, then the newly calculated mean will also increase by the same amount of time, that is 1.5 hours. This is because, since each individual item used in calculating the initial mean increased by the same amount, the average increase will be that same value (1.5 hours). Hence, the mean will increase by the same amount.
New mean = 6 hours + 1.5 hours = 7.5 hours
For the standard deviation ; which measures the variation of values from the mean, in this scenario, the standard deviation remains the same because the each value and the mean changed by equal amount, hence the bet change remains the same and so does the standard deviation.
The figure below is made of two identical triangular prisms what is the value of the figure
Answer:
I will tell you in the explanation...
Step-by-step explanation: God created us and god knows the answer. :)
Find the slope-intercept form for the line passing through (2,7) and parallel to the line passing through (3,8) and (-3,4).
The slope-intercept form for the line passing through (2,7) and parallel to the line passing through (3,8) and (-3,4) is y = ___
(Simplify your answer. Use integers or fractions for any numbers in the expression.)
Answer:
[tex]y = \frac{2}{3} x + 5 \frac{2}{3} [/tex]
Step-by-step explanation:
Please see the attached pictures for the full solution.
Emily won 68 pieces of gum playing
hoops at her school's game night. Later,
she gave two to each of her friends. She
only has 6 remaining. How many friends
does she have?
Answer:
She has 31 Friends
Step-by-step explanation:
68 pieces of gum - 6 remaining = 62 for friends
62 pieces for friends /2 each friend gets 2 =31 Friends.
Answer:
Emily has 31 friends.
Step-by-step explanation:
If you do 31*2 it will give you 62. If you add 6 it will equal 68 which is the total. so the answer is 31.
PLS PICK ME A BRAINLIEST!!!!!
A car dealership manager has determined that the profit, in thousands of dollars, of the dealership can be determined by the expression LaTeX: x^2-4xL a T e X : x 2 − 4 x, where LaTeX: xL a T e X : x is the number of cars sold. A different manager states that the profit of the dealership can be determined by the function LaTeX: 5xL a T e X : 5 x. What number of cars sold makes the equation LaTeX: x^2-4x=5xL a T e X : x 2 − 4 x = 5 x true? Select all that apply.
Answer:
The number of cars that brings the same profit is 9 and 0
Step-by-step explanation:
Given
[tex]x^2 - 4x = 5x[/tex]
Required
Determine the possible values of x
[tex]x^2 - 4x = 5x[/tex]
Subtract 5x from both sides
[tex]x^2 - 4x - 5x = 5x - 5x[/tex]
[tex]x^2 - 9x = 0[/tex]
Factorize
[tex]x(x - 9)= 0[/tex]
Split the equation
[tex]x = 0[/tex] or [tex]x - 9 = 0[/tex]
[tex]x = 0[/tex] or [tex]x = 9[/tex]
Hence, the number of cars that brings the same profit is 9 and 0
What kind of distribution is the t-distribution?
Answer:
The t-distribution is a kind of probability distribution that is bell-shaped (like the normal distribution) but has a good number of values at the tails, making the tails fatter and the curve flatter.
Step-by-step explanation:
The t-distribution is a kind of probability distribution that is bell-shaped (like the normal distribution) but has a good number of values at the tails, making the tails fatter and the curve flatter.
The smaller the sample size n, the flatter the t-distribution curve but the larger the sample size n, the closer in identity to the normal distribution, the t-distribution will be.
Candy Mazer earns $90 a day at her part-time job. She works 2 days each week
Her husband, Jon, earns a salary of $450 a week. What total gross gay de Cards
and Jon get every week? (1 point)
Put these numbers in order from least to greatest.
-8/20, 3/5, -16/32.
Answer:
least to greatest: -16/32, -8/20, 3/5
Step-by-step explanation:
The equation shown has a missing value. -2(2x-?)+1=17-4x. For what missing value(s), if any, does the equation have exactly one solution?For what missing value(s), if any does the equation have no solution?
Answer:
8
Step-by-step explanation:
There are no values for which the equation has only one solution for no solution the missing value can be anything except 16.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
The equation shown has a missing value.
-2(2x - ?) + 1 = 17 - 4x
Applying the distributive property:
-4x + ? + 1 = 17 - 4x
? + 1 = 17
There are no values for which the equation has only one solution or unique solutions.
For no solution the missing value can be anything except 16
? + 1 = 17
? = 17 - 1
? = 16
Thus, there are no values for which the equation has only one solution for no solution the missing value can be anything except 16.
Learn more about the linear equation here:
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The given point in on the graph of y=f(x). Find a point on the graph of y=g(x)
g(x) = f(x - 1); (7, 18)
Answer: b
Step-by-step explanation:
anser is b
A racetrack charges $80 for each seat in the lower section, $60 for each seat in the upper section, and $40 for field tickets. There are three times the amount of seats in the upper section as the lower section. The revenue from selling all 24,200 tickets is $1,140,000. write a system to represent the situation. How many seats are in each section
Answer:
The seats in the lower section are x= 1720 , in the upper section are 3x= 5160 and y=24,200 - 4x= 24,200 - 6880= 17320 tickets in the field.
Step-by-step explanation:
Let x represent the number of seats in the lower section then the number of seats in the upper section is 3x and y the number of seats in the field.
The equation can be written as
80x + 60 (3x) + 40 y= $1,140,000-----1
And x+ 3x+ y= 24,200------2
4x+ y= 24,200
or y= 24,200-4x----3
Solving Eq 1
80x + 180x + 40 y= $1,140,000
260x+ 40 y=$1,140,000-----4
Putting Eq 3 in Eq 4
260x+ 40 y=$1,140,000
260x+ 40(24,200-4x-)=$1,140,000
260x + 968,000- 160x= $1,140,000
100x= $1,140,000-968,000
100x= 172,000
x= 1720
The seats in the lower section are x= 1720 , in the upper section are 3x= 5160 and y=24,200 - 4x= 24,200 - 6880= 17320 tickets in the field.
Putting the values of x and y in Eq 1 we get the same revenue.
80x + 60 (3x) + 40 y= $1,140,000
80(1720) + 60 (5160) + 40( 17320)= $1,140,000
137600 + 309600 + 692800= $1,140,000
137600 + 1002400= $1,140,000
The total number of seats in the upper section is 5160, in the lower section is 1720 and the total number of seats in the field is 17320.
Given :
A racetrack charges $80 for each seat in the lower section, $60 for each seat in the upper section, and $40 for field tickets.There are three times the amount of seats in the upper section as the lower section. The revenue from selling all 24,200 tickets is $1,140,000.The following steps can be used in order to determine the total number of seats in each section:
Step 1 - In the lower section let the total number of seats be 'x'. So according to the given data, in the upper field, the total number of seats is '3x'. Now, let the total number of seats in the field be 'y'.
Step 2 - The linear equation that represents total revenue from the tickets.
[tex]\rm 80x + 60(3x)+40y = 1140000[/tex]
260x + 40y = 1140000 --- (1)
Step 3 - The linear equation that represents the total number of tickets is:
x + 3x + y = 24200
y = 24200 - 4x --- (2)
Step 4 - Substitute the value of y in equation (1).
260x + 40(24200 - 4x) = 1140000
x = 1720 tickets
Step 5 - Substitute the value of 'x' in equation (2).
y = 24200 - 4(1720)
y = 17320 tickets
For more information, refer to the link given below:
https://brainly.com/question/11897796
Need help please and other questions
Answer: Gear 14 or 14.3
Step-by-step explanation:
7+4(2a+15)=-13
Please help
Answer:
a = -10
Step-by-step explanation:
Simplifying
7 + 4(2a + 15) = -13
Reorder the terms:
7 + 4(15 + 2a) = -13
7 + (15 * 4 + 2a * 4) = -13
7 + (60 + 8a) = -13
Combine like terms: 7 + 60 = 67
67 + 8a = -13
Solving
67 + 8a = -13
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-67' to each side of the equation.
67 + -67 + 8a = -13 + -67
Combine like terms: 67 + -67 = 0
0 + 8a = -13 + -67
8a = -13 + -67
Combine like terms: -13 + -67 = -80
8a = -80
Divide each side by '8'.
a = -10
Simplifying
a = -10
Below is a set of dates taken from 50 coins found in the drawer of the person who wrote this question. Which histogram best portrays the data in the set of numbers? NOTE: the answer choices assume that thex-axis is years, so newer coins would be to the right. (You may want to use the TI-83 to help you.)
Answer:
The fourth graph in the second image.
Step-by-step explanation:
After plotting all the points in a calculator, the fourth graph matches the calculator.
APEX
5th graph with the large spike on the second to last bar
8
Round to nearest hundred thousand.
755,787
0.12345 is it rational or irrational number
Answer:
it is a rational number
The graph of y=−x+4 is shown below.
Answer:
Correct answer:
(−4,0)
(0,4)
(1,5)
Step-by-step explanation:
The points (0,4), (1,5), and (−4,0) are on the line and are solutions to the equation. The points (0,2) and (−4,−2) are not on the line and are not solutions to the equation.
Use (a) the midpoint rule and (b) simpson's rule to approximate the below integral. ∫ x^2sin(x) dx with n = 8.
Answer:
midpoint rule = 5.93295663
simpson's rule = 5.869246855
Step-by-step explanation:
a) midpoint rule
[tex]\int\limits^b_a {(x)} \, dx[/tex]≈ Δ x (f(x₀+x₁)/2 + f(x₁+x₂)/2 + f(x₂+x₃)/2 +...+ f(x[tex]_{n}[/tex]_₂+x[tex]_{n}[/tex]_₁)/2 +f(x[tex]_{n}[/tex]_₁+x[tex]_{n}[/tex])/2)
Δx = (b − a) / n
We have that a = 0, b = π, n = 8
Therefore
Δx = (π − 0) / 8 = π/8
Divide the interval [0,π] into n=8 sub-intervals of length Δx = π/8 with the following endpoints:
a=0, π/8, π/4, 3π/8, π/2, 5π/8, 3π/4, 7π/8, π = b
Now, we just evaluate the function at these endpoints:
[tex]f(\frac{x_{0}+x_{1} }{2} ) = f(\frac{0+\frac{\pi}{8} }{2} ) = f(\frac{\pi }{16})=\frac{\pi^{2}sin(\frac{\pi }{16}) }{256} =[/tex] 0.00752134
[tex]f(\frac{x_{1}+x_{2} }{2} ) = f(\frac{\frac{\pi }{8} +\frac{\pi}{4} }{2} ) = f(\frac{3\pi }{16})=\frac{9\pi ^{2} sin(\frac{3\pi }{16}) }{256}[/tex] = 0.19277080
[tex]f(\frac{x_{2}+x_{3} }{2} ) = f(\frac{\frac{\pi }{4} +\frac{3\pi}{8} }{2} ) = f(\frac{5\pi }{16})=\frac{25\pi ^{2} sin(\frac{5\pi }{16}) }{256}[/tex] = 0.80139415
[tex]f(\frac{x_{3}+x_{4} }{2} ) = f(\frac{\frac{3\pi }{8} +\frac{\pi}{2} }{2} ) = f(\frac{7\pi }{16})=\frac{49\pi ^{2} sin(\frac{7\pi }{16}) }{256}[/tex] = 1.85280536
[tex]f(\frac{x_{4}+x_{5} }{2} ) = f(\frac{\frac{\pi }{2} +\frac{5\pi}{8} }{2} ) = f(\frac{9\pi }{16})=\frac{81\pi ^{2} sin(\frac{7\pi }{16}) }{256}[/tex] = 3.062800704
[tex]f(\frac{x_{5}+x_{6} }{2} ) = f(\frac{\frac{5\pi }{8} +\frac{3\pi}{4} }{2} ) = f(\frac{11\pi }{16})=\frac{121\pi ^{2} sin(\frac{5\pi }{16}) }{256}[/tex] = 3.878747709
[tex]f(\frac{x_{6}+x_{7} }{2} ) = f(\frac{\frac{3\pi }{4} +\frac{7\pi}{8} }{2} ) = f(\frac{13\pi }{16})=\frac{169\pi ^{2} sin(\frac{3\pi }{16}) }{256}[/tex] = 3.61980731
[tex]f(\frac{x_{7}+x_{8} }{2} ) = f(\frac{\frac{7\pi }{8} +\pi }{2} ) = f(\frac{15\pi }{16})=\frac{225\pi ^{2} sin(\frac{\pi }{16}) }{256}[/tex] = 1.69230261
Finally, just sum up the above values and multiply by Δx = π/8:
π/8 (0.00752134 +0.19277080+ 0.80139415 + 1.85280536 + 3.062800704 + 3.878747709 + 3.61980731 + 1.69230261) = 5.93295663
b) simpson's rule
[tex]\int\limits^b_a {(x)} \, dx[/tex] ≈ (Δx)/3 (f(x₀) + 4f(x₁) + 2f(x₂) + 4f(x₃) + 2f(x₄) + ... + 2f([tex]x_{n-2}[/tex]) + 4f([tex]x_{n-1}[/tex]) + f([tex]x_{n}[/tex]))
where Δx = (b−a) / n
We have that a = 0, b = π, n = 8
Therefore
Δx = (π−0) / 8 = π/8
Divide the interval [0,π] into n = 8 sub-intervals of length Δx = π/8, with the following endpoints:
a = 0, π/8, π/4, 3π/8, π/2, 5π/8, 3π/4, 7π/8 ,π = b
Now, we just evaluate the function at these endpoints:
f(x₀) = f(a) = f(0) = 0 = 0
[tex]4f(x_{1} ) = 4f(\frac{\pi }{8} )=\frac{\pi^{2}\sqrt{\frac{1}{2}-\frac{\sqrt{2} }{4} } }{16}[/tex] = 0.23605838
[tex]2f(x_{2} ) = 2f(\frac{\pi }{4} )=\frac{\sqrt{2\pi^{2} } }{16}[/tex] = 0.87235802
[tex]4f(x_{3} ) = 4f(\frac{3\pi }{8} )=\frac{9\pi^{2}\sqrt{\frac{\sqrt{2} }{4}-\frac{{1} }{2} } }{16}[/tex] = 5.12905809
[tex]2f(x_{4} ) = 2f(\frac{\pi }{2} )=\frac{\pi ^{2} }{2}[/tex] = 4.93480220
[tex]4f(x_{5} ) = 4f(\frac{5\pi }{8} )=\frac{25\pi^{2}\sqrt{\frac{\sqrt{2} }{4}-\frac{{1} }{2} } }{16}[/tex] = 14.24738359
[tex]2f(x_{6} ) = 2f(\frac{3\pi }{4} )=\frac{9\sqrt{2\pi^{2} } }{16}[/tex] = 7.85122222
[tex]4f(x_{7} ) = 4f(\frac{7\pi }{8} )=\frac{49\pi^{2}\sqrt{\frac{1}{2}-\frac{\sqrt{2} }{4} } }{16}[/tex] = 11.56686065
f(x₈) = f(b) = f(π) = 0 = 0
Finally, just sum up the above values and multiply by Δx/3 = π/24:
π/24 (0 + 0.23605838 + 0.87235802 + 5.12905809 + 4.93480220 + 14.24738359 + 7.85122222 + 11.56686065 = 5.869246855
Question 1 (1 point)
Eric is baking a cake. The recipe calls for 2 1/2 pounds of flour for every 1/4 cup of sugar. How many pounds of flour per sugar should Eric use?
5/8
8
4
10
Od
1/10
Answer:
10
Step-by-step explanation:
2 1/2 ÷ 1/4 reduce
5/2 × 4/1 = 20/2
20 ÷ 2 = 10 pounds of flour per sugar
(I'm not very good at math so this might be wrong)
Why are the following expressions not
monomials?
3xy^Z
1-2s
(ab)^1/2
3xy^z: exponent is not a nonnegative int.
r-2s: it is not a product
(ab)^1/2: exponent is not a nonnegative int.
Answer:
✔ exponent is not a nonnegative integer
✔ it is not a product
✔ exponent is not a nonnegative integer
suppose 35 gallons of water came out of a pipe in 7 minutes. what was the rate in gallons per minute
Answer:
6 gallons per minute
Step-by-step explanation:
35÷7=6
What is the simplified value of the expression below?
4.2 + 0.6 divided by 3 minus 5(0.9 minus 0.5)
Answer:The simplified value: 4.8 divided by 3 or the answer you’ll get from that is 1.6
Step-by-step explanation:
4.2+0.6=4.8 0.9-0.5=0.4 5*0.4=2 3-2=1 4.8 divided by 3
Answer:
The answer is 2.4
Step-by-step explanation:
4.2 + 0.6 divided by 3 minus 5(0.9 minus 0.5) = 2.4
I got it right and used a calculater.
Vincent goes to the gym for 30 minutes every day. He starts a new exercise routine on a Monday and uses a function to model the amount of calories he has used, f\left(d\right)f(d), as a function of the number of days, dd, he has exercised with the new routine.
Complete question is;
Vincent goes to the gym for 30 minutes every day. He starts a new exercise routine on a Monday and uses a function to model the amount of calories he has used, f(d), as a function of the number of days, d, he has exercised with the new routine.
Which statement represents a correct interpretation of f(d) ?
A. f(5) = 150 means Vincent has exercised for a total of 150 minutes after the fifth day of exercising with his
new routine
B. f(10) = 3500 means Vincent will use 3,500 calories on day 10 of exercising with his new routine.
C. f(15) = 5250 means after 15 days of exercising with his new routine, Vincent has used 5,250 calories.
D. f(30) = 10500 means the number of calories Vincent has used times 30 is equal to 10,500
Answer:
Option A: f(5) = 150 means Vincent has exercised for a total of 150 minutes after the fifth day of exercising with his
new routine .
Step-by-step explanation:
We are told that f(d), is a function of the number of days, d, he has exercised with the new routine.
We are also told that he goes to the gym for 30 minutes daily.
Thus;
For option A, f(5) means that he went to the gym for 5 days. At 30 minutes per day means he exercised for a total of: 30 × 5 = 150 minutes. So option A is correct
For option B, f(10) means that he went to the gym for 10 days. At 30 minutes per day means he exercised for a total of: 30 × 10 = 300 minutes. Thus, option B is wrong
For option C, f(15) means that he went to the gym for 15 days. At 30 minutes per day means he exercised for a total of: 30 × 15 = 450 minutes. Thus, option C is wrong.
For option D, f(30) means that he went to the gym for 30 days. At 30 minutes per day means he exercised for a total of: 30 × 30 = 900 minutes. Thus, option D is wrong.
Which of the following shows the union of the sets? {4, 8, 12, 16, 20, 24, 28} {2, 4, 6, 8, 10, 12} A. {4, 8, 12} B. {4, 8, 12, 16} C. {6, 8, 10, 12} D. {2, 4, 6, 8, 10, 12, 16, 20, 24, 28}
The area of a square is numerically 60 more
than the perimeter. Find the length of the side.
A) 200 units B) 10 units
C) 50 units D) 40 units
Step by Step for this please.
Thank you, have a nice day.
Answer:
B) 10 units
Step-by-step explanation:
Area of a square is A = s², and perimeter of a square is P = 4s.
A = P + 60
s² = 4s + 60
s² − 4s − 60 = 0
(s + 6) (s − 10) = 0
s = -6 or 10
Since s can't be negative, s = 10 units.
Let x stand for the number of calories in each individual snack. 25 snacks are sampled at a time. The population mean is 95 calories and the population standard deviation is 2.5 calories. What is the mean and standard deviation of the sampling distribution of sample means
Answer:
mean = 95, standard deviation of sampling distribution = 0.5
Step-by-step explanation:
sample space n = 25 snacks
mean = bar x = 95 calories
population standard deviation = 2.5 calories
the mean is already given as 95 calories
standard deviation of the sampling distribution = s.d/√n
= 2.5/√25
= 2.5/5
= 0.5
Therefore we have the mean = 95, and standard deviation of sampling distribution = 0.5
|-2x+8|-5=-7 i need to find the value of variable
Answer:
x = -5
Step-by-step explanation:
Simplify: 2x + 8 - 5 = -7Subtract 8 from each side, so it now looks like this: 2x - 5 = -15Add 5 to each side, so it now looks like this: 2x = -10Divide each side by 2, to cancel out the 2 next to x. It should now look like this: x = -5I hope this helps!
How much will a person pay for 13.5 pounds of bananas at a price of $1.68
Answer:$15.18
Step-by-step explanation:
A 15-ounce package of pistachios cost 5.99. What is the cost per ounce?
Answer:
$0.39
Step-by-step explanation:
39¢
5.99 ÷ 15 = 0.39
Please help me! I will mark brainliest! Thanks!
Answer: Group 12
Step-by-step explanation: The element is Mercury.
Four hundred and seventy three thousand as a value of digits
Answer:
473,000
Step-by-step explanation:
:D
