A box contains three red balls and two white balls. A ball is selected at random from the box, its color is recorded, and the ball is replaced. A second ball is then selected at random and its color is recorded. Find the probability, , that both balls are red. . some one plz hurry this is for a quiz and tell me howq to solve it with work and steps

Can someone explain the elimination method to me for this problem?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?