Xyz are in 3: 3: 6.what are the measures of the angles

The quadratic function h(t) = -16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after its dropped from a 15 story building. from what height in feet was the ball dropped?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Solve the following: 12(x^2–x–1)+13(x^2–x–1)=25(x^2–x–1) 364x–64x=300x