Someone help please 5. Which of the following represents the lengths of the sides of a right triangle?

A. 20, 28 and 32, because 400 + 784 = 1,184
B. 9, 12 and 15, because 81 + 144 = 225
C. 6, 12 and 14, because 36 + 144 = 180
D. 18, 20 and 28, because 18 + 10 = 28​

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left