Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

25 questions

Step-by-step explanation:

0.72x = 18

x = 25

If Allie answered 18 questions correctly on the exam, also stating the fact that she answered 72% of the questions correctly on the exam, this means that the answer is there was 25 questions on the test  

Step-by-step explanation: because when you do the math, first define your variables

Q:# of questions

And then, you solve

A percent is a fraction whose denominator is 100

(72/100)Q=18

72Q=1800 Divide 72 on both sides

And you get 25 as your answer  

i got 142 as my answer

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have