What is the answers for ∠A and \angle B∠B are vertical angles. If m\angle A=(7x-20)^{\circ}∠A=(7x−20) ∘
and m\angle B=(6x-1)^{\circ}∠B=(6x−1)
∘
, then find the measure of \angle A∠A.

Ineed to learn how to solve this problem

Fred has a total of 62 dvd and cd. if the number of cd is three more than two times the number of dvd, how many cd does he have?

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39