Answer:
Rewriting
without an exponent we get 
Step-by-step explanation:
We need to rewrite the following without an exponent. 
We need to solve the exponent to find the result.
We know the exponent rule: 
Now using this rule to solve the equation:

So, Rewriting
without an exponent we get 
Answer:
1/5? 0.2?
Step-by-step explanation:
P = 77.
side (S1, S2) = 2(B) - 4.
P = S1 + S2 + B.
77 = (2B - 4) + (2B - 4) + B.
77 = 2B - 4 +2B - 4 + B.
77 = 5B - 8.
77 + 8 = 5B.
85 = 5B
B = 85/5
B=17 ft
X = ay
Hope this helps
Mark brainliest please