X+ y = 4
x - 2y = -5

if the first equation is multiplied by 2 and then the equations are added, the result is

3x = 13
3x = 3
x = 3

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Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Abilliard ball is struck by a cue. it travels 1 0 0 cm 100cm before ricocheting off a rail and traveling another 1 2 0 cm 120cm into a corner pocket. the angle between the path as the ball approaches the rail and the path after it strikes the rail is 4 5 ∘ 45 ∘ . how far is the corner pocket from where the cue initially struck the ball? do not round during your calculations. round your final answer to the nearest centimeter.