Answer:
20x = 55
Step-by-step explanation:
First you have to add 3x to both sides of 11-3x=x
Now that you have 11 = 4x you divide 4 on both sides 
11/4 = x
But you can't divide 11 by 4 unless you are looking for the decimal form of 11/4 which is 2.75
so now we take 11/4 or 2.75 depending on if you need your answer in fraction or as a decimal and replace that with x however both will equal the number 55
the answer is 72
let me know if you need an explanation
Answer(-5.0) and (0,-3)
Step-by-step explanation:
#10:
15·12=180
180÷3=60
60·22=1,320
There would be 101.33 students the following year
<h3>Ratios </h3>
From the question, we are to determine the number of students for the following year
From the given information,
There are 3 PA's for 38 students
If the ratio stays the same and
There were 8 PA's the following year, the number of students would be x
x = (8 × 38) / 3
x = 304 / 3
x = 101.33 students
Hence, there would be 101.33 students the following year
Learn more on Ratios here: brainly.com/question/2914376
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