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Mathematics 12 Online
OpenStudy (anonymous):

H=15+23t-5t^2 how long does it take for the rocket to pass a window 10 m above ground?

OpenStudy (anonymous):

i really need help

OpenStudy (anonymous):

test tomorrow

OpenStudy (anonymous):

What is H?

OpenStudy (anonymous):

the hight and t the time

OpenStudy (raden):

15+23t-5t^2 = 10 5t^2-23t-5=0 use quadratic formula ...

OpenStudy (anonymous):

would there be 2 answers?

OpenStudy (anonymous):

I still don't understand the problem. @RadEn could you explain me, please? :p

OpenStudy (raden):

maybe one of be positive and the other be negative, miss for negative value of t

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