Homework Help: Algebra

Posted by chase on Tuesday, January 29, 2013 at 5:53pm.

The formula h=280t-7t^2 gives the height, h in meters, of a rocket t seconds after take off. The maximum height reached by the rocket is 2800 m. How long will it take the rocket to reach this maximum height?

Algebra - Henry, Thursday, January 31, 2013 at 10:30pm
h = 280t - 7t^2 = 2800.
-7t^2 + 280t - 2800 = 0
Use Quadratic Formula.
t = 20 s.

Answer this Question

Related Questions

Algebra - The height of a rocket fired vertically into the air from the ground ...
Math/calculus - a toy rocket is shot into the air at the top of a building so ...
math-algebra - A launched rocket has an altitude, in meters, given by the ...
Algebra~Scary problem! - A launched rocket has an altitude, in meters, given by ...
algebra - A launched rocket has an altitude, in meters,give n by the polynomial ...
Algbrah - A launched rocket has an altitude in meters, given by the polynomial h...
math 117 - A launched rocket has an altitude in meters, given by the polynomial ...
math 117 - A launched rocket has an altitude in meters, given by the polynomial ...
math 116 - A launched rocket has an altitude in meters, given by the polynomial ...
math 117 - A launched rocket has an altitude in meters, given by the polynomial ...

For Further Reading

First Name:
School Subject:
Answer: