x and 4x are supplementary to each other, meaning they add up to 180. So your equation is 180=5x. Divide both sides by 5 to get 36=x.
Answer: The margin of error is 0.041.
Step-by-step explanation:
Since we have given that
n = 1010
x = 515
So, it becomes 
At 99% level of confidence ,
z = 2.58
So, Margin of error would be

Hence, the margin of error is 0.041.
Answer:
Kimberly is hiking a huge canyon. Every very hour, she hikes down the canyon, and gets -7 feet deeper. How many feet deep is she in 4 hours?
Step-by-step explanation:
I hope this is good.
Boy: x
girl: x - 53
father: 4(x - 53)
Now you simplify.
Answer:
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