Write an equation for the nth term of the arithmetic sequence. Then find a40. 6,-1,-8,-15,​

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 =

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Are the corresponding angles congruent? explain why or why not.