Find cos 2∅ if ∅ is in the first quadrant and tan∅ = 40/9.
cos2∅ = ?

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Which expression is equivalent to -5(3x - 6/7)

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay