Answer:
5 groups of 5
Step-by-step explanation:
No. of students = 32No. of students in each group = 5No. of students in ONE group = 7No. of groups of 5 = 32 - 7 = 25 = 25/5 = 5
depends on the number... using a variable it would be 1/2n+15
It's easy. Half of a number would be dividing it in half then adding 15.
Given
Required
Find x
We have:
Rewrite as:
Expand
Factorize
Factor out x + 520
Split
Solve
Side length must be positive;
So:
b