Tuesday

October 21, 2014

October 21, 2014

Posted by **Rutba** on Sunday, October 28, 2012 at 2:05pm.

- Math -
**Steve**, Sunday, October 28, 2012 at 8:54pmsolve for t in

45 = -5t^2 + 50t

5t^2 - 50t + 45 = 0

t^2 - 10t + 9 = 0

(t-9)(t-1) = 0

it will reach 45m on the way up at t=1, and on the way back down at t=9.

**Answer this Question**

**Related Questions**

Math - A firecracker is launched straight up, and its height is a function of ...

Math - 11. A rocket is fired upward from some initial height above the ground. ...

Physics - When a falling firecracker explodes, the momenta of its pieces _______...

Math - check answer - A rifle bullet is fired directly upward from the ground. ...

Math - A clown was shot out of a cannon at ground level. Her height above the ...

physics - A firecracker explodes, sending pieces of equal mass in three ...

Math - If a baseball is projected upward from ground level with an initial ...

Math-Help - A rock is tossed straight up into the air. The height h (in feet) t ...

MATH - A Ferris wheel completes one revolution every 90 s. The cars reach a ...

Math - Can someone help me and verify if the answer I picked is correct? 1. ...