Just use the Pythagorean Theorem
(9 +x)^2 = 15^2 + x^2
x^2 + 18x + 81 = 225 + x^2
18x = 144
x = 8
So the three sides of the triangle are
15, 8 and 17
The correct answer is 14yds
You divide and get 3/7 meters per second
First let's make both the miles and the hours ran improper fractions:

So, to find our miles per hour, we have to divide the miles by the hours to get: 
Answer:
39785
Step-by-step explanation:
or,40596×2÷100=811
or,40596-811=39785