Find the perimeter. Simplify your answer.
60'
90-8
4c+6
c-7

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?