What is the value of x?

60.9 m
13.7 m
42.9 m
35.2 m

Find the missing part. use an improper fraction for your answer.

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 =

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?