Answer:
There are 20 kids total in the class.
Step-by-step explanation:
15/100 × 20 = 3
You can use direct proportion for any percent calculation.
Compare each number with its percent.
3 i s 15 % of what number? Let the number be x
So, 3 represents 15 % and x represents 100 %
x/ 100 = 3/15
Multiply by 100 to isolate x
x =
x = 20
Check: 15/ 100 × 20 = 3
Answer:
Step-by-step explanation:
The question and the attached image are different. However, the attached image answers the question y = -4 correctly.
So, I will solve for:
Given
Required
Possible values of x and y
Let x = 0:
So, we have:
Let y = 4
Collect Like Terms
So, we have:
<em>So, all you need to do is: assume a value for either x or y, then solve for the other variable.</em>