Wow there's a lot of questions there. Pythagorean Theorem states that in a right triangle, the hypotenuse^2 = leg1^2 + leg2^2 If the hypotenuse isn't known use the above formula. If a leg isn't known, use hypotenuse^2 = leg1^2 + leg2^2 leg1^2 = hypotenuse^2 - leg2^2
answered: Guest
c.
step-by-step explanation:
because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.