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Mathematics 15 Online
OpenStudy (help_people):

help? i guess you will get a fan and medal if that makes you happy :)

OpenStudy (help_people):

A firecracker shoots up from a hill 150 feet high, with an initial speed of 110 feet per second. Using the formula H(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground? Eight seconds Nine seconds 10 seconds 11 seconds

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