The answer should be 12.2
7^2+10^2=c^2
49+100=c^2
149=c^2
12.2=c
Answer:
x = -1, -5
Step-by-step explanation:

Hope it helps.
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The answer to this problem is x = 52/19 = 2.737... I hope...
we are given the expression (4e) ^x and is asked to derive the expression. we distribute first the equations resulting to 4^x e^x = y. using the rule of products,
y = 4^x e^xy' = 4^x ln 4 e^x + 4^x e^x
The final answer is y' = 4^x ln 4 e^x + 4^x e^x