Which quantity is proportional to 21/28? Check all that are true.
15/20
314
213
7/14
18/24
Please help me asap

Write 17/20 as a decimal and as a percent.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?