Answer:
My brother took this test and said it was 35. Im not sure but try it
Step-by-step explanation:
The answer is the first one
To solve we need to use Pythagoras theorem (

)
There are 2 possible lengths for x: hypotenuse or one of the 2 shorter sides.
Hypotenuse:
10^{2} + 21^2 =

100+441=

23.3≈x
Shorter leg:



= 441-100

x≈18.47
Answer:
Answer in the photo
Step-by-step explanation:
Just simplify the expression