Mathematics High School

Question...Sleep is known to affect student grades. Kirsten is conducting a study in a local high school using two treatments on two groups of students. One group will nap one hour in an eight-hour school day and another will nap 30 minutes in an eight-hour school day. What group would be the best control for the study?

Options...
A third group that takes a one-hour nap or a 30-minute nap randomly each day

A third group that shortens the school day to six hours

A third group in which no naps occur

A third group that splits the day with a 30-minute nap in the morning and a 30-minute nap in the afternoon

A third group in which each student chooses either a 30-minute nap or a one-hour nap

Answers

Answer 1

Answer:

c

Step-by-step explanation:

a third party group in which no naps occur

Related Questions

Need help with geometry question

Answers

Answer:

B. 66

Step-by-step explanation:

idk how to explain it without repeating what it says in the answer

Answer:

The answer is:

B) 66 degrees

Step-by-step explanation:

Since the triangle is an isosceles triangle, angle C is the same as angle B.

57 + 57 = 114

Since you know two of the three angles, and you know that a triangle's angles must equal 180 degrees...

180 - 114 = 66

Angle A must equal 66 degrees for the triangle to equal 180 degrees.

I hoped this helped you! If it did, please consider rating and pressing the 'Thanks' button. Have great day!

A rectangular garden has an area of 35 square miles. If its length is 78 miles, what is its width?
Input your answer as a fraction.

Answers

Answer:

9/20 mi

Step-by-step explanation:

A= b*hFill in the Values

35 = 78 * h

3. divide 35 by 78 = 0.44871794871

4. round that to .45

5. To make a fraction, put it over 100

45/100

7. Simplify fraction

9/20

There are 229 basketball fans who plan to go to a game. How many buses will be needed, given that each bus can hold 49 fans?

Answers

Answer:

5

Step-by-step explanation:

you divide the number of fans(229) by the number of people the buses can hold(49)

229÷49= ~4.6

because theres a decimal, you would have to add on a extra bus. so the answer would be 5

is a÷6 is greater than 1

Answers

Answer: is the suposed to be -6 if it is no not grater then 1

Step-by-step explanation:

On a scavenger hunt, you find 16 out of 25 objects. Write "16 out of 25" as a fraction, a decimal, and a percent.
Fraction:
Decimal:
Percent:
I need help ASAP

Answers

Answer:

Fraction: 16/25 Decimal: 6.25 Percent: 6%

Step-by-step explanation:

I am 99.99% sure this is right.. I hope it helps you.

The statements "16 out of 25" written in fractional, decimal, and percent form are 16/25, 0.64, and 64% respectively.

What is a fraction?

A fraction is a part of the whole represented by a/b, where a and b are any integers.

The Given statement is "16 out of 25".

The statement in mathematical form is:

16/25 (Fraction)

= 0.64 (Decimal)

= 64% (percent)

Hence, the statements "16 out of 25" written in fractional, decimal, and percent form are 16/25, 0.64, and 64% respectively.

Learn more on fractions here:

brainly.com/question/10354322

#SPJ2

What is the value for angle 2?

I need help

Answers

Answer:

120

Step-by-step explanation:

all complementary angles should add up to 180 degrees

Answer:

the value of 2 is 60

Step-by-step explanation:

I don’t understand help me plz hard

Answers

Answer:

-2 1/2 is the correct answer

I hope this helps! If it is correct please mark brainliest answer, thank you!

Stay safe, God bless and happy studying!

An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is $24.6, and the standard deviation is known to be $7.9. How large of a sample would be required in order to estimate the mean per capita income at the 80% level of confidence with an error of at most $0.56? Round your answer up to the next integer.

Answers

Answer:

327

Step-by-step explanation:

Calculation for How large of a sample would be required in order to estimate the mean per capita income

First step is to find z 80% confidence level

At 80% confidence level the z will be:

α/2 = 1 - 80% = 1 - 0.80 = 0.20

α/2= 0.20 / 2 = 0.01

Zα/2= Z0.01= 1.28 from z table

Now let calculate the Sample size using this formula

Sample size = n= [( Zα/2* σ ) / E]^2

Let plug in the formula

n = (1.28*7.9/0.56)^2

n= 326.06

n=327 (Approximately)

Therefore How large of a sample would be required in order to estimate the mean per capita income will be 327

please i need this quick , it’s so confusing

Answers

i think its A : 25 B : 81 C: 49

WILL GIVE BRAINLIEST
On a field trip, there are 8 adults and 24 students. What is the ratio of students to the total number of people on the field trip?

8 to 24
3 to 4
1 to 4
32 to 24

Answers

Answer:

3:4

Step-by-step explanation:

24 students : 32 people total

Divide both sides by 8

Answer: 3 to 4

this is correct, verified it myself B)

can someone help my sister with her module? she in 6th,and i am way to dumb to know how to help her (i gib link)

Answers

Answer:

Sure!

Step-by-step explanation:

I will pick the brainiest answer! Thanks! :)

Answers

Part A:

A). Equilateral Isosceles

B). Right isosceles

C). Obtuse scalene

Part B:

F and E

Plz mark me brainliest

Answer:

For the first triangle, (a) :

-Equilateral

- Isosceles

For the second triangle, (b) :

-Right

-Isosceles

For the third triangle (c) :

- Scalene

- Obtuse

Step-by-step explanation:

what is the slope of the line passing through the points (0,-5) and (4,2)
​

Answers

Answer: 7/4.

Step-by-step explanation: To find the slope of a line, one must use the formula (y2-y1)/(x2-x1). In this case y2 is 2, y1 is -5, x2 is 4, and x1 is 0. We can plug this into the equation to get 7/4.

Which set of numbers does NOT describe the side
lengths of a right triangle?
a. 3, 4, 5
b. 5, 12, 13
c. 6, 14, 17
d. 7, 24, 25
4

Answers

Answer:

The answer is C

Step-by-step explanation:

You have to do the Pythagorean Theorem.

A. you get 25=25

B. you get 169=169

C. you get 232=289

D. you get 625=625

Aiman has 6 pizzas to share at a party. If each person will eat 3/8 of a pizza, how many people can share the pizzas?
A 48 people
B 16 people
C 2 people
D 6 people

Answers

Answer:

The amswer is B, 16 people.

Determine the intercepts of the line.
y = 80 - 18

Answers

Answer:

Step-by-step explanation:

This equation is in slop-intercept form. This means that the y-int is in the equation, it will always be the constant, so y is -18.

To find x, set y to 0.

0 = 8x - 18

18 = 8x

18/8 = x

9/4 = x

Dierections:Factor out the GCF from the following.Make sure your answer is factored completely by taking out any common numbers and or variables

Answers

Answer:

21

Step-by-step explanation:

your mom

PLEASE HELP ASAP
Factor 3x+6y-9z

Answers

I’m not sure what the answer is so better I don’t say I don’t want you to get it wrong

Please answer correctly !!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

x=57 degree

Step-by-step explanation:

Answer:

x=57

Step-by-step explanation:

(x-5) + (2x+4) = 180

get all xs on the same side non xs on other side till you get

3x=171

then divide 171 by 3

x = 57

Yesterday, the temperature in a city dropped from 9°C to –9°C, as shown below.



The expression 9 + (–18) represents the final temperature. Which of the following is an equivalent way to describe this temperature?

|–18| degrees in a negative direction from 9 degrees

|–18| degrees in a positive direction from 9 degrees

|–9| degrees in a negative direction from 9 degrees

|–9| degrees in a positive direction from 9 degrees

Answers

Answer:

I belive the correct answer might be (A)

Diyva has 70 rocks.she donates half of the rocks to a science center. then she collects 3 rocks on each of her nature hikes

Answers

Answer:

What are you asking here? This is more like a statement.

Step-by-step explanation:

Answer:

I'm just going to assume that your trying to figure out how many rocks she has left, in which case the answer would be 38.

The length of a nail is 1 3/4 inches. What is the length in
inches of 8 nails?

Answers

Answer:

14 nails

Step-by-step explanation:

Solve the problem. Show your work

Answers

Answer:

D correct

Step-by-step explanation:

Need help!! How do I figure out the question.

Answers

Answer:

its the second one lol its just asking you to pick the one less than a and a is 0.11 so it would be 0.0019

Step-by-step explanation:

4 x 7/8 Pls I need help my mom is yelling at me

Answers

Answer:

3.5

Step-by-step explanation:

Answer:

7/2 or 3 1/2

Step-by-step explanation:

4 * 7/8 = 4/1 * 7/8 = 28/8 = 7/2 = 3 1/2

Brenda wants to buy a phone case that costs $35. It is on sale for 20% off. What would be the sales price? What are we finding?

A) part
B) whole
C) percent

Answers

Answer:

A

Step-by-step explanation:

It also detects if you are right or wrong

Answers

Answer:

50

Step-by-step explanation:

all your doing is dividing 100 by 20 and u get 50

Answer: 15. A. Proportional 16. B. 50 mph

Step-by-step explanation: The price and the number of apples are proportional based on the info you have given us. And B. 50 is correct because 100 miles in 2 hours is 100/2 which equals 50/1 so the unit rate would be B. 50 mph.

Wait So Do You Multiply Fractions Like Lets Say The Problem Was 2 x 9
8 1 Right So Do I Multiply 9x1 Then 1x2 Then 8x9 Then 8x2?
I Learned How To Do Them A While Ago But Forgot.

Answers

Answer:

can you take a photo of the question you're asking for? I can answer it, but your question was kinda worded funny so I don't rest understand what you mean. I'm good at fractions, so I will be happy to help:)

What is the slope of this line?

Enter your answer as a fraction in simplest term in the box.

Answers

Answer:

1/4

Step-by-step explanation:

y2-y1/x2-x1

6-5/ 0 - -4.... since it's two subtract signs facing each other you turn it into a +..... 1 /4

Answer:

1/4

Step-by-step explanation:

y2-y1/x2-x1

6-5/ 0 - -4.... since it's two subtract signs facing each other you turn it into a +..... 1 /4

best estimate for 7/8-6/11

Answers

Ummm we are allll gonna be dead cause Biden be da president

Answer:

WE ARE GONNA DIE

Step-by-step explanation:

BECAUSE BIDEN IS THE PRESIDENT AND DONALD TRUMP IS NOT. >.< I DONT LIKE BIDEN!!!!

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