Answer:
11 1/2.
Step-by-step explanation:
2 7/8 / 1/4
= 23/8 / 1/4
= 23/8 * 4
= 23/2
= 11 1/2
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Start by simplifying 28/7:

Now multiply 4 by what we have left, which is 4:

16 is your answer.
Hope this helps!☺
Answer:
96
Step-by-step explanation:
We simply need to plug in a = 4 so 6a² = 6 * 4² = 6 * 16 = 96.
Answer:
I can try to help. whats your issue with algebra?
So since the formula for the sum of a polygon's interior angles is (n-2)180, just make that equal to 2520 and solve for n, which is the number of sides.
STEPS:
1) (n-2)180 = 2520
2) n-2 = 2520/180
3) n-2 = 14
4) n = 16
So the polygon must have 16 sides