9(5)+8=53
All you have to do is plug 5 in for x
I think the answer is arithmetic.
I hope this helps! Be safe out there.
Sorry if I’m wrong
Each brother should get 4 slices. 12 slices divided by 3 brothers equals 4 slices each.
So, an isosceles triangle has 2 equal sides, we will call them x.
The base can be modeled by 3+x
So, the perimeter is equal to x + 3+x + x
So
15.6 = 3x + 3
12.6 = 3x
4.2 = x
So, the lengths of the sides are 4.2, 4.2, 7.2
