Answer:
x=8in
Step-by-step explanation:
Let the unknown side=xin
Hypotenuse^2=opposite^2+adjacent^2
Hyp=17in
Opp=xin
Adj=15in
Hyp^2=opp^2+adj^2
17^2=x^2+15^2
17^2-15^2=x^2
289-225=x^2
64=x^2
x=√64
Answer:the mean is 90
Step-by-step
you find the sum of the values then divide them by the amount of numbers in the set