It costs a ski resort $15/hour to hire one front-loader operator. If the ski resort plans to hire four front-loader operators each digging at a rate of 1 cubic yard of dirt per 20
seconds to dig 8920 cubic yards of dirt, how much in labor will it cost the ski resort?

$720

Explanation:

3 (yd³) per minute per worker.

4*3=12 yd³ per minute in total.

12*60 = 720 yd³ per hour.

8920 yd³ ÷ 720 yd³ = 12.388889 hours of work.

15$ a worker/hour x 4 workers = $60 per hour in total. Since there are only 12 whole hours in 12.388889, $60/hour x 12 full hours = $720 for all work done.

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