Question

Please answer and show and explain your steps.

Answer 1

`\displaystyle five\:seconds`

Explanation:

Factour this trinomial. Now, as you can see, there is a negative inserted in front of the trinomial. If you are afraid of negatives, easily factour it out and begin the factorisation process:

Set the factors equal to zero to determine the time:

`\displaystyle 0 = [t - 5][5t + 2] \\ \\ -(2)/(5), 5 = t`

*Time is NEVER negative, therefore it will take five seconds for the rocket to hit the ground.

I am joyous to assist you at any time.