Answer:
a
Step-by-step explanation:
please make me Brianlist please
Determine whether the sampling is dependent or independent. Indicate whether the response variable is qualitative or quantitative.
A psychologist wants to measure the effect of music on memory. He randomly selects 80 students and measures their scores on a memory test conducted in silence. The next day he measures their scores on a similar test conducted while classical music is playing. The mean score without music is compared to the mean score with music.
A. quantitative, independent.
B. quantitative, dependent.
C. qualitative, dependent.
D. qualitative, independent.
Answer:
its B i did chapter 11 test yesterday
Step-by-step explanation:
How can limit be used in real life
Answer:
Engineers use limits in real life.
Step-by-step explanation:
Limits are also used as real-life approximations to calculating derivataves. So to make calculations, engineers will approximate a function using small differences in the function and then try and calculate the derivative of the function by having smaller and smaller spacing in the function sample intervals.
What is the slope of the following equation?
y = -3x +7
A. -3
B. 7
C. X
D. -7
Answer: A. -3
Step-by-step explanation: The slope is the coefficent of x, this can be read as -3/1, down 3 over 1.
i got one hour to complete this please help ASAP :
Answer:
b
Step-by-step explanation:
what is the probability of rolling a number greater than 2 with a standard number cube
Answer:
4/6 or 2/3
Step-by-step explanation:
6 sides with 4 of the numbers being greater than 2; 4/6. The simplified version is 2/3.
The numbers x, y, z and w have an average equal to 25. The average of
x, y and z is equal to 27. Find w.
A. 23
B. 19
C. 25 D. 29
Answer:
look at the picture i sent
Maggie bought c CDs for $12 each, b books for $7 each, and a purse costing $24.
a. Write an expression to show the total amount of money Maggie spent.
b. If Maggie bought 4 CDs and 3 books, how much money did she spend?
Step-by-step explanation:
Given that,
Maggie bought c CDs for $12 each, b books for $7 each, and a purse costing $24.
(a) Cost of c CDs = 12c
Cost of b books = 7b
Cost of p purse = 24p
Total amount = 12c+7b+24p
(b) Cost of 4 CDs = 12(4) = $48
Cost of 3 books = 7(3) = $21
Hence, this is the required solution.
Karen, Janet, Brian, and José ran for class president.
José received 35% of the vote and Janet received 24%.
What percentages could Brian and Karen have received?
NO LINKS !!!
A. 45% and 26%
B. 25% and 16%
C. 30% and 21%
D. 35% and 36%
What is the sum of the measures of angles 3,4,5?
Answer:
It's equal to 3² + 4² + 5² = 9 + 16 + 25 = 50
Maria had $22.45 to spend on groceries. After buying 3 bags of chips, she had $10.60 left. If each bag of chips costs the same amount, what is the price of one bag of chips
Answer:
$3.95
Step-by-step explanation:
Take the amount she has to spend and subtract the amount left ($10.60) and that will leave you with $11.85. So this is how much was spent on the 3 bags of chips. To find how much each bag cost, divide $11.85/3 bags = $3.95 per bag.
Which measurement can be used to describe the size of an angle?
90 grams
90 degrees
90 milliliters
90 inches
Do
Answer:
90 degrees
Step-by-step explanation:
grams is a unit of mass
degrees is a unit of angle measure
milliliters is a unit of volume
inches is a unit of length
Which of the following is not true? Select one: The data is symmetrical. The median is 1.25. The data is skewed right The spread of the data distribution is from 0 to 2.5
What is the inverse of the function y = 2x + 3?
Answer:
y = x/2 - 3/2
Step-by-step explanation:
Answer:
y = x/2 - 3/2
Step-by-step explanation:
First, get x on its own:
Subtract 3 from each side
y - 3 = 2x
Divide through by 2
y/2 - 3/2 = x
or x = y/2 - 3/2
Now simply switch labels: x↔y
y = x/2 - 3/2
Can someone please help me with this (it says I have to choose more than 1 answers)
Answer:
B & C
Step-by-step explanation:
Since x is greater than 38, 40 and 120 matches the condition.
Hope u understand.
Please mark as the brainliest
how do you simplify?
-4w-3(-7x+6w)+3x
Answer:
w= 9x/5
Step-by-step explanation:
Answer:
-22w+24x
Step-by-step explanation:
Please help me! No links
How many math problems were answered correctly by Suzy and Joe?
Kaylee bought 2 burritos which cost $2.75 each. She also bought a drink for $3.50. How much money did Kaylee spend?
$19.25
$9
$12.50
$10
what the the opposite of - 4.1 ?
Answer:
The opposite of -4.1 is 4.1.
opposites are the same number but either with a + sign or a - sign
EX)
7, -7
5, -5
4, -4
Transform the equation 2x^2 + 4xy + 5y^2 - 4x - 22 to parallel axes
through (-2,3).
Answer:
I think you are happy with answer
Jill took a photograph of a plane taking off. Her mother is an air-traffic controller and was able to estimate the measurements shown. How far is the plane above the ground? Round to the nearest yard?
56 yards
75 yards
40 yards
60 yards
Answer:
75 yards .
Step-by-step explanation:
Let 90 yards be h ,50 yards be b and remaining side be p
h^2 = p^2 + b^2
90×90=p^2+50×50
90×90-50×50=p^2
root 5600=p
p=74.833
The function f(x) = 2 and g(x) = f(x + k). Ifk = -5, what can be concluded about the graph of
g(x)?
The graph of g(x) is shifted vertically
Select a Value
The graph of g(x) is shifted horizontally
Answer:
the graph is not shifted vertically from the graph of f(x)
the graph is not shifted horizontally from the graph of f(x)
Step-by-step explanation:
find the volume of the pyramid 6ft 6ft 4ft
Answer:
48 ft³
Step-by-step explanation:
[tex]V=\frac{lwh}{3}[/tex]
6 · 6 · 4
144 ÷ 3
48
Answer:
48ft cubed
Step-by-step explanation:
Multiply the numbers then use cubed because your working with volume.
The area of a rectangle is 108 square meters the width is 9 meters what is the length
Answer:
12
Step-by-step explanation:
9x12=108
Answer:
length is 12
Step-by-step explanation:
108 divided by 9 is 12
The lowest part of the Caspian Sea has an elevation of 28 meters below sea level. Enter the integer that represents the elevation of the lowest part of the Caspian Sea, in meters
Answer:
-28 meters
Step-by-step explanation:
Sea level is represented as 0 meters typically, so for something that is 28 meters below sea level, you would represent that as -28 meters.
The Sine Function
The tide is the regular rising or falling of the ocean's surface. This is due in large part to the gravitational forces of the moon. The following table represents water level of the tide off the coast of Kings Point, N.Y. for a 24 hour period.
February 9th through February 10th of 2009.
Use your graphing calculator to produce a sine regression model for the data in the table. Round a, b, c, and d to the nearest 0.0001. Then use your model to predict the height of the tide 30 hours after the original observation.
a. The height of the tide 30 hours after the original observation is -3.27 feet.
b. The height of the tide 30 hours after the original observation is 16 feet.
c. The height of the tide 30 hours after the original observation is 8 feet.
d. The height of the tide 30 hours after the original observation is -0.63 feet.
Please select the best answer from the choices provided
Answer:
C. The height of the tide 30 hours after the original observation is 8 feet.
Step-by-step explanation:
I calculated it logically
Question 20 of 25
What is the quadratic regression equation that fits these data?
Number of seconds Height (in feet)
x. y
0. 11
1. 13
2. 13
3. 12
4. 9
5. 1
A. y = -3.07x^2 +0.41x + 15.65
B. y=19.61(0.69^2)
c. y= -2.34x^2 + 2.19x + 16.25
D. y = -1.11x^2 + 3.74x + 10.64
Answer: The person who said it's D is right
Step-by-step explanation: I took the test and I got it right
The quadratic regression equation that fits these data is -1.107 X² +3.736 X +10.643 .
What is Quadratic Regression ?A quadratic regression is the process of finding the equation of the parabola that best fits a set of data. As a result, we get an equation of the form:
y=ax2+bx+c where a≠0 .
The best way to find this equation manually is by using the least squares method.
That is, we need to find the values of a ,b, and c such that the squared vertical distance between each point (xi,yi) and the quadratic curve y=ax2+bx+c is minimal.
After solving we get the values of a , b, and c and thus we form the equation
-1.107 X² +3.736 X +10.643
To know more about Quadratic Regression
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Use the Distributive Property to solve the equation below. Use pencil and paper. Describe what it means to distribute the 2 to each term inside the parentheses.
2(m+4)=20
Answer:
Use the distributive property to solve the equation 2(m + 2) = 22. Describe what it means to distribute the 2 to each term inside the parentheses
Answer:
7
Step-by-step explanation:
In the first region are located 6 Rattatta Pokemon hidden in the grass at any given time and 8 Pidgey Pokemon. What would be the probability of running a Rattatta Pokemon?
Plz help me well mark brainliest!!...
Answer:
B
Step-by-step explanation:
9+9+6+6=18+12=30
hope it helps :)
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