It's going to be lindsay's birthday soon, and her friends sandy, jay, and hakeem have contributed equal amounts of money to buy her a present. they have $19.50 to spend between them. determine how much each contributed. write an equation that models the situation and find its solutiin.

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.