Wednesday

April 1, 2015

April 1, 2015

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 - I have done two parts but no idea how to the third one. The height, h, in...

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

math - a rock is thrown straight up in the air from an initial height of ho, in...

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

math Functions - The function h(t) = 2 + 50t -1.862t^2, where h(t) is the height...

Polynomials - A rock is thrown upward at a speed of 10 metres per second. The ...

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

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

Math - Geometry - An object is launched from certain height into the air. The ...

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