Rachael's backyard swimming pool is being emptied by a pump. the amount of water in the pool (w, measured in gallons) at any time (t, measured in hours) is given by the following equation:
w = -250t + 9000
a. how many gallons of water are being pumped out each hour? explain.
b. after 11 hours, how much water is left in the pool? explain.
c. how much water was in the pool at the start? explain.
d. how long will it take the pool to empty? explain.

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

answer:

a=9

step-by-step explanation: lmk if you need a explanation