Question

I just need to know the steps so I can be able to do the rest of them

Answer 1

1. x = 9.5

Explanation:

Number one.

`{a}^(2) + {b}^(2) = {c}^(2) \\ {8.6}^(2) + {b}^(2) = {12.8}^(2) \\ 73.96 + {b}^(2) = 163.84 \\ \frac{ - 73.96 \: \: \: \: \: \: \: \: \: \: = - 73.96}{ {b}^(2) = √(89.88) } \\ b = 9.5`

a = leg

b = leg

c = hypotenuse/diagonal