Mathematics College

The table shows the results of two 7th grade

surveys that Roddy took to find out how many

hours of sleep 7th graders at his school get on

a typical school night:

Based on the sample data, which of the following

is the closest to the mean number of hours of

sleep a 7th grade student gets?

Group of answer choices

8

7

8.25

7.75

Answers

Answer 1

Answer here
Answer is 8

Related Questions

PLEASE HELP ME WITH THIS QUESTION!!! WHATS THE ANSWER?? I WILL GIVE YOU BRAINLIEST AND A THANKS!!!

Answers

Answer:

A) 113 m²

Step-by-step explanation:

A=[tex]\pi[/tex]r²

[tex]\pi[/tex]x6x6=113.097

Hope has 3 pencils, 5 pens, and 7 erasers. Which fraction represents the
number of pens she has to the total number of school supplies?

Answers

Answer:

1/3

Step-by-step explanation:

Answer:

Hence, your answer is 1/3.

Brainliest would be appreciated!!!!

Pls help extra points

Answers

Answer:

the mode is 2

Step-by-step explanation:

Brainliest for correct answer

Answers

The last choice is the correct one

The graph of the function

Answers

Answer:

A. the function is increasing for all real values of x where x < -4

at the convince store, 24 pack of water bottles are selling for $3.99 for 1 pack, or $9.99 for 3 packs. hiw much money per pack would you save by purchasing 3 packs insyead of 1?

Answers

Answer:

you would save .66 per pack so .66×3=1.98

Step-by-step explanation:

9.99÷3=3.33, 3.99-3.33=.66

Please fill in this for 20 points and brainlist <3333

Answers

Answer:

1. [tex]750(0.041) = $30.75[/tex]

2. [tex]90.75 - 55 = 35.75\\\frac{35.75}{55} = 0.65\\[/tex] 65%

3. [tex]13(1.06) = 13.78[/tex]

Please remember to brainlist this answer

Answer:

give them brainliest

Step-by-step explanation:

Jolly measured the cake. Then she calculated that it has a circumference of 15cm. what is the cake's diameter? Use 3.14 for pi.
Will mark brainlest.

Answers

Answer:

diameter = circumference / pi

circumference = 15cm

diameter = 15 / 3.14

= 4.77707006369 cm

hope this answer helps you.....

please mark as brainliest... thank you!

Figure ABC is similar to figure XYZ.

What is the value of x in meters?
FOR BRAINLIST!!!

Answers

Answer:

D. 10m

Step-by-step explanation:

I hope you trust me

Multiply 16,3,and 29, and then subtract 17

Answers

Answer:

1375

Step-by-step explanation:

We can just follow what it says.

16 times 3 times 29 = 1392

1392 - 17 = 1375

Answer
1,375
Step-by-step explanation:
16 x 3 x 29 = 1,392
1,392 - 17 = 1,375

What is the range of the function graphed below?

Answers

Answer:

-3<y<=3 or B

Step-by-step explanation:

first we find the smallest y value which is -3

then we find the largest y vlaue which is three

so since there is an open circle at negative three we do not include it while at three we do.

so the answer would be -3<x<=3

if my answer helps please mark as brainliest.

help :( math due tonight

Answers

0 because there are no real solutions

Please help, homework is do in 41 mins

A rectangular carport has area of one 50 ft.The width of the carport is 5 feet less than twice its length. Find the length and width of the carport

Width= ? feet,
Length= ? feet

Answers

Answer:

It is 10 because 5 times 10 is 50

Answer:

A) = 5

B) = 10

C) = (5 x 10)= 50

Step-by-step explanation:

Area of a rectangle a x b = c

Where a is the short side

Where b is the long side

And c is our area

Okay now we we have to think what numbers give us 50 so ( 1 x 50 , 5 x 10 , 2 x 25)

So since now we have the numbers we look for a number that is twice the other and is - 5 the other one and the only numbers are 10 and 5 so in conclusion

A= 5

B= 10

C= 50

Enter the correct value so that each expression is a perfect-square trinomial.

x2 – 10x +

Answers

Answer:

x^2 - 10x + 25

Step-by-step explanation:

Answer:

Step-by-step explanation:

Edge… you’re welcome

5. Solve for x:
22x-2
20x + 10

Answers

Answer:

22x-2=20x+10? Is this the question?

x=6

Step-by-step explanation:

22x-20x=10+2

2x=12

x=6

X=6 i’m pretty sure

A police officer estimated the distance from one side of a street to the other to be 14m . The actual distance was 13.4.
Find the absolute error and the percent error of the police officer's estimate. If necessary, round your answers to the nearest tenth.
NO LINKS

Answers

Answer:

Part A. The absolute error is 0.2

Part B. The percent error is 1.45

Step-by-step explanation:

Hope this helps! :)

P.S I can tell that you have experience with the bots who ask you to go press a link. :)

Find the limit of the function by using direct substitution. limit as x approaches zero of quantity x squared minus five. A) Does not exist B) 0 C) 5 D) -5

Answers

Answer:

lim as x---->0 of (x²-5) = -5 which is D

Please help me Asap i really need this

Answers

Answer:

Step-by-step explanation:

Answer:

B brainlist

Step-by-step explanation:

ABC is a straight line, work out the size of angle x

Answers

The value of x is: 180° - 100° - 45° = 35°

The report "The New Food Fights: U.S. Public Divides Over Food Science" states that younger adults are more likely to see foods with genetically modified ingredients as being bad for their health than older adults. This statement is based on a representative sample of 178 adult Americans aged 18 to 29 and a representative sample of 427 adult Americans aged 50 to 64. Of those in the 18 to 29 age group, 48% said they believed these foods were bad for their health, while only 3% of those in the 50 to 64 age group believed this.
(a) Are the sample sizes large enough to use the large-sample confidence interval to estimate the difference in the population proportions?
(b) Estimate the difference in the proportion of adult Americans aged 18 to 29 who believe the foods made with genetically modified ingredients are bad for their health and the corresponding proportion for adult Americans aged 50 to 64. Use a 90% confidence interval.
(c) Is zero in the confidence interval?

Answers

Answer:

a) yes

b) ( 0.0280 , 0.1720 )

c) No

Step-by-step explanation:

A) Determine if the sample sizes are large enough

where :

ages between ( 18 to 29 )

p1 = 0.48 ,

n1 = 178 , ∴ n1 P1 = 85.44 also n1 ( 1 - p1 ) = 92.56

ages between ( 50 to 64 )

P2 = 0.03 ,

n2 = 427 ∴ n2p2 = 12.81 also n2( 1 -p2 ) = 414.19

since all the values ae above 10 we can conclude that the sample sizes are large enough

answer = yes

B) Estimate the difference in the proportion of adult Americans aged 18 to 29

= ( 0.0280 , 0.1720 )

attached below is the detailed solution

C) zero is not included in the interval

3. Find the slope of the line through the pair of points.
(12, 2), (-7,5)

Answers

Answer:

-3/19

Step-by-step explanation:

Given data

We have the coordinates

(12, 2), (-7,5)

x1=12

y1=2

x2=-7

y2=5

The expression for the slope is given as

Slope= y2-y1/x2-x1

Substiute

Slope= 5-2/-7-12

Slope= 3/-19

Hence the slope is -3/19

$72 with a 40% markup

Answers

Answer:

$100.80

Step-by-step explanation:

40%/100%×72=$28.80

$72+$28.80=$100.80

Which of the following statements is true of an essay's conclusion?

a.) It provides new evidence to support your argument.

b.) It hooks your reader.

c.) It includes the first statement of your thesis.

d.) It creates a sense of completeness.

Answers

The answer is option D.

Please help!! I’ll give branliest!!!

Answers

Answer:

4.88

Step-by-step explanation:

sinA=opposite/adjacent

sin24=x/12

12(0.40673664307)=x

x=4.88083971691

Find the slope of the line by comparing the change in y to the change in x.

Answers

Answer:

3/4

Step-by-step explanation:

i was just learning this stuff

The slope of the line = 3/4

What is slope?

"It is the ratio of change in the y values to the change in x values"

From given graph,

Consider AB,

assuming scale of 1 unit on each axis,

change in y = 3 and the change in x = 4

Therefore, the slope of the line = 3/4

Learn more about the slope of the line here:

https://brainly.com/question/1583658

#SPJ2

Find the measure of <2.

Answers

Answer:

78°

Step-by-step explanation:

In this problem, we need to find the value of angle 2.

Angle 2 is an Alternate exterior angle. Alternate exterior angles are formed by a transversal intersecting two parallel lines. They are located outside the two parallel lines.

To form an alternate exterior angle, angle 2 must be equal to 78°. Hence, we can say that the value of ∠2 is equal to 78°.

A number is five more than three times another number. The sum of the two numbers is 33. Equation X plus 3X +5+352 find the value

Answers

Answer:

the number is 26

Step-by-step explanation:

x+3x+5=33

4x+5=33

4x=28

x=7

3(7)+5=26

3 (18 - 7) divided by 2? I have to show my work

Answers

Answer:

16.5

Step-by-step explanation:

(18-7) = 11

11 x 3 = 33

33 divided by 2 = 16.5

Answer:

[tex]16\frac{1}{2}[/tex]

Step-by-step explanation:

[tex]\frac{3 (18 - 7)}{2} =\frac{3*11}{2}=\frac{33}{2}= 16\frac{1}{2}[/tex]

Use △GHJ, where A, B, and C are midpoints of the sides.

When GH = 7z−1 and CB = 4z−3, what is GA?

Answers

Answer:

GA=17

Step-by-step explanation:

As A, B, C are the midpoints of the sides of AGHJ,

so GH= 2(CB)

⇒7z-1= 2(4z-3)

⇒7z-1= 8z-6

⇒7z-8z= -6+1

⇒-7= -5

z=5

so GA=CB

⇒GA= 4(5)-3= 17

hope it helps...

have a great day

The value of the variable 'z' is 5. Then the length of GA will be 17 units.

What is the triangle?

The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

Use △GHJ, where A, B, and C are midpoints of the sides. When GH = 7z − 1 and CB = 4z − 3.

From the graph, then the condition is given as,

GH = 2 × BC

7z - 1 = 2 × (4z - 3)

Simplify the equation, then we have

7z - 1 = 2 × (4z - 3)

7z - 1 = 8z - 6

6 - 1 = 8z - 7z

z = 5

Then the length of the GA is given as,

GA = BC

GA = 4z - 3

GA = 4 (5) - 3

GA = 20 - 3

GA = 17 units

The value of the variable 'z' is 5. Then the length of GA will be 17 units.

More about the triangle link is given below.

https://brainly.com/question/25813512

#SPJ2

Please help i need this to pass

Answers

Answer:

Step-by-step explanation:

a^2+b^2=c^2

a^2+96^2=100^2

a^2+9216=10000

a^2=784

a^2= √784

a=28

Answer:

28 in.

Step-by-step explanation:

Let,

The unknown leg be = x

According to Pythagoras Theorem,

[tex] {hypotenuse}^{2} - {base}^{2} = {height}^{2} [/tex]

[tex] = > {100}^{2} - {96}^{2} = {x}^{2} [/tex]

[tex] = > {x}^{2} = 10000 - 9216[/tex]

[tex] = > {x}^{2} = 784[/tex]

[tex] = > x = \sqrt{784} [/tex]

=> x = 28

Hence,

the another leg is 28 in. (Ans)

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