Answer:
if you use perimeter area you can get answer
The answer is -20x, because the parentheses show they are being multiplied, so you multiply -10x and 2, which would be -20x.
9 students.
4 studied 21 minutes,
2 studies 22 minutes,
1 studied 23 minutes,
and 2 studied 30 minutes.
Hope this helps you:)
Your answer is 1/36.
I hope this helped!
