The isosceles trapezoid abde is part of an isosceles triangle ace. find the measure of the vertex angle of ace. (see attachment)

a. 130 degrees

b. 60 degrees

c. 65 degrees

d. 50 degrees

i really need an explanation along with the answer,

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.

What is the sum of the first 8 terms of the geometric series

It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples