exam Maths Puzzle Numerical Ability

Hello,


I need help with this problem:


The height, in feet, of a rocket t seconds after blast-off is given by a formula h=1260t-16t^2. After how many seconds will the rocket first reach a height of 23,400 feet?


Thank you

Read Solution (Total 0)

exam Other Question

perform the indicated operation involving rational expressions:
2x+14/x^2+14x+49
----- ----------
11y x^2+2
how do you solve these kinds of problems