Question

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

Answer 1

Answer:

1. x = 9.5

Step-by-step explanation:

Number one.

${a}^{2} + {b}^{2} = {c}^{2} \\ {8.6}^{2} + {b}^{2} = {12.8}^{2} \\ 73.96 + {b}^{2} = 163.84 \\ \frac{ - 73.96 \: \: \: \: \: \: \: \: \: \: = - 73.96}{ {b}^{2} = \sqrt{89.88} } \\ b = 9.5$

a = leg

b = leg

c = hypotenuse/diagonal