E because 8*8=64 so 8/49*8/49 = 64/49
Answer:

Step-by-step explanation:
Use the Pythagorean theorem. 
a and b are the two side lengths
c is the hypotenuse (value across from the right angle)
Plug in the values that you are given.

Solve for x


x=

Answer:
Should be D.
I don't know why it won't let me respond with under 20 characters.
Answer:
Infinite solutions
Step-by-step explanation:
All solutions are possible.