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Katen [24]
3 years ago
11

Skyler goes to a school which has 100 students in it. She asks 40 random students whether they like the new 8.30 am start to the

day. 30 of them say no they don’t like it. Use this information to estimate how many students in the whole school dislike the 8.30 am start.
Mathematics
1 answer:
dybincka [34]3 years ago
8 0

Answer:

75 students

Step-by-step explanation:

first write a ratio of the students asked to students dislike

40:30, 40 to 30, or 40/30

now simplify the ratio

4/3

now she asked 40 students, so we have to find out the unit rate

so we have to flip the fraction to 3/4 and then divided the top and bottom by 4

0.75/1

now multiply the top and bottom by 100

75/100

75 students

You might be interested in
Use mental math to find the equations that are true. Select all that apply. A. 400 ÷ 80 = 50 B. 4 , 000 ÷ 80 = 5 C. 400 ÷ 8 = 50
NeX [460]

As per the mental math calculation, the correct division equations are

C. 400 ÷ 8 = 50

D. 40,000  ÷ 800 = 50

E. 40,000 ÷ 80 = 50

Mental math calculation:

Mental math calculation means a group of skills that allow people to do math “in their head” without using pencil and paper or a calculator.

We can done any type of calculation like addition, subtraction, division etc. based on this method.

Given,

Here we have the following equations,

A. 400 ÷ 80 = 50

B. 4 , 000 ÷ 80 = 5

C. 400 ÷ 8 = 50

D. 40 , 000 ÷ 800 = 50

E. 40 , 000 ÷ 80 = 500

And we need to find the equations that are true by using the mental math calculation.

While we looking into the given expressions,

A. 400 ÷ 80 = 50

This one is false because when we cancel zero, and divide it we get 5 alone.

Then the next one is,

B. 4,000 ÷ 80 = 5

This one is false because when we cancel zero, and divide it we get 50 alone.

Third one is

C. 400 ÷ 8 = 50

This one is true because when we cancel zero, and divide it we get 50 as result.

Next is,

D. 40,000 ÷ 800 = 50

This one is true because when we cancel zero, and divide it we get 50 as result.

Final one,

D. 40,000 ÷ 80 = 500

This one is true because when we cancel zero, and divide it we get 500 as result.

Therefore, options C, D and E are true.

To know more about Mental math here.

brainly.com/question/680614

#SPJ1

8 0
1 year ago
The number of customers that visit a local small business is 46,900 and has been continuously declining at a rate of 3.2% each y
anygoal [31]
V=Vo (1-r/100)^n
V=46900(1-3.2/100)^8
V=46900(96.8/100)^8
V=46900*(.968)^8
V=36155.61
V=36155(approx)
4 0
3 years ago
Question 8 of 10
Alex787 [66]
The answer is c hope I helped!
4 0
3 years ago
Can someone explain
aev [14]
Simple, you are adding a negative to a positive, so think of it as a subtraction, 5/6 - 2/3 = .
2/3 is 4/6.
5/6 - 4/6 = 1/6
7 0
3 years ago
Read 2 more answers
How do you solve?<br> 2.5 x 1/4=
lubasha [3.4K]

here you go, hope this helps

4 0
3 years ago
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