Question

Please answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

D.
`x=10`

Explanation:

You can use the Pythagorean Theorem,
`a^2+b^2=c^2`, where a and b are the legs and c is the hypotenuse.

`12^2+b^2=13^2\\144+b^2=169`

Subtract 144 from both sides

`b^2=25`

Square root both sides

`b=5`

`2b=x\\b=5\\x=10`

Answer 2

D

Explanation:

You have 2 5 12 13 right triangles.

x = 2 * 5

x = 10