If you spend 4 hours a week studying for English and 5.5 hours studying for math what is the ratio of time spent studying in math to studying for English?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?