Answer:
900
Step-by-step explanation:
your answer is in the picture
This is true sometimes and false sometimes, depending on the numbers.

Substitute the values of x, y and z to the expression:

Number 8 is C. I'm still trying to figure out what number 7 is.
Answer:
The formula to find the third side of the triangle is 
Step-by-step explanation:
In order to find value of the third side without knowing any degree measurements, you need to know value of two sides. Variable
, in this case, is a hypotenuse (the longest side of the triangle).