If cosø = -5/13 and sin ø<0 what is tan ø

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.