its 72 bc if the -12 was bigger than 72 the -12 would be right BUT 72 is bigger bc for -12 there's no less than just the laws of the numberline so its 72
Δ FCD is a right triangle ( 3² + 4² + 5² ). 10 : EB = 5 : 3 5 EB = 30 EB = 6 With Pythagorean theorem: CE² = 10² - 6² = 10 - 36 = 64 CE = 8 ED = 5 AB = 2 · 5 = 10 Answer: The length of the side AB is 10.
