Solve the equation using elimination and describe your steps. x = y - 32x + y = 12 i have been trying to figure this out and i can't.

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.

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Multiplying an even number of negative numbers gives an answer that is choose from: