The measure of an angle is 74.7°. what is the measure of a supplementary angle fast pls

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.

How many lines can be drawn through points j and k? 0 1 2 3

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)