1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anton [14]
3 years ago
6

Mr.Lee wants to survey 20 of the 210 students in seventh grade about the hours they slerp each night. He finds 2 of the 20 stude

nts surveyed sleep for 9 hours each night. About how many of the 210 seventh graders sleeo for 9 hours each night?​
Mathematics
1 answer:
allsm [11]3 years ago
6 0

21 students sleep for 9 hours each night

<em><u>Solution:</u></em>

Given that, Mr.Lee wants to survey 20 of the 210 students in seventh grade about the hours they sleep each night

He finds 2 of the 20 students surveyed sleep for 9 hours each night

Therefore, 2 out of 20 students sleep for 9 hours each night

Find out the percentage of 2 out of 20

\rightarrow \frac{2}{20} \times 100 = 10 \%

Thus 10 % of 210 students sleep for 9 hours each night

Find out 10 % of 210

\rightarrow 10\% \text{ of } 210\\\\\rightarrow 10 \% \times 210\\\\\rightarrow \frac{10}{100} \times 210\\\\\rightarrow 21

Thus 21 students sleep for 9 hours each night

You might be interested in
The rate of change in y = 24x
Artyom0805 [142]

Answer:

24

Step-by-step explanation:

Using the formula y = mx + b we can find the slope or rate of change. First we must convert it into the formula or equation we currently have which is y = 24x + 0.

24 = m

x = x

0 = b

m is always the rate of change or slope so by finding m we find the slope or rate of change.

5 0
3 years ago
Find the value of the underlined 10,698 under lined digit is 9
Kryger [21]

I think the answer choice is in the tens place

3 0
3 years ago
3^2 is an example of
mr_godi [17]

Answer:

B. A numerical expression

3 0
3 years ago
Help me on this pleasseeee
EastWind [94]

Answer:

1) E and F

Step-by-step explanation:

So width is x

legth Is 3x+3

Perimeter is

3x+3+3x+3+x+x

Now simplify

8x+6

Now go through each choice that equals 8x+6

Only e and f

8 0
2 years ago
Read 2 more answers
Which two of the following have the same value as 50.96?<br> Choose 2 answers:
Firdavs [7]

Answer:

A and C

Step-by-step explanation:

A: 5 tens = 50

9 tenths = 0.9

6 hundreths = 0.06

= 50.96

C: 5*10 = 50 + 9 * 1/10 = 0.9 + 6 * 1/100 = 50.96

8 0
2 years ago
Other questions:
  • Mai walked 1/8 of a 30-mile walking trail.How many miles did mai walk
    9·1 answer
  • How would I make an equation into an inverse of itself?
    5·1 answer
  • I need help on this math problem
    15·1 answer
  • A long-distance runner runs 2 miles south and then 4 miles east. How far is the runner from the starting point?
    12·1 answer
  • I WILL MARK THE BRAINLIEST! I NEED HELP NOW!Ashton is constructing the bisector of MN¯¯¯¯¯¯¯.What should Ashton do for his first
    11·2 answers
  • 1 pts
    12·1 answer
  • What is the length of the base of a right triangle with an area of 20 square meters and a height of 4 meters?
    5·2 answers
  • Calculate the amount of money​ you'll have at the end of the indicated time​ period, assuming that you earn simple interest. You
    5·1 answer
  • THE LENGTH AND BREADTH OF A RRCTANGLE ARE IN RATIO 4:3 AND THE DIAGONAL MEASURES 10 CM THEN ITS PERIMETER IS
    13·2 answers
  • A boy gets #2.00 per week as pocket money. His sister gets only #1.60 per week
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!