Algebra
posted by Keonn'a : Please help me. .
1. Sydney is tossing a softball into the air with an underhand motion. The distance of the ball above her hand at any times given by the formula: h(t)=64t16t^2.where h(t) is the height of the ball (in feet) and t is time (in seconds).
a. At what times,t, is the ball in her hands?
b. At what time, t is the ball at its maximum height?
c. How high h, is the ball at its maximum height?

Algebra 
Steve
(a) find t when h=0 (just solve for t, as usual)
as with all quadratics, the vertex is midway between the roots, at t = b/2a = 64/32 = 2
Respond to this Question
Similar Questions

math
im trying to help my son any help would be great When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the … 
algebra
im trying to help my son i have no ida about this stuff any help would be great When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in … 
college algebra
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is … 
algebra
Library Assignment When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec … 
math
susan throws a softball upward into the air at a speed of 32 feet per second from a 8 foot platform. the distance upward that the ball travels is given by the function. d(t)=16t^2+32t+8. What is the maximum height of the softball? 
math
In slow pitch softball the ball is pitched in an underhand motion. A batter in a softball game is pitched a ball that has initial vertical velocity of 35 feet per second. a. Write an equation for the height h (in feet) of the ball … 
math
An object that is falling or vertically projected into the air has it height, in feet, above the ground given by the formula below, where s is the height in feet, Vo is the original velocity of the object, in feet per second, t is … 
home work
The ball is throw in to the air . If its height in feet is given by  16t^2 + 64t, at what time t will the ball reach a height of 64 feet? 
Algebra
During a softball game, a batter hits a ball upward from an initial height of 3 feet. The height, in feet, of the softball is given by s(t)=−16t^2+70t+3 , where t is time in seconds and . Which is closest to the time when the … 
Algebra
A bottle rocket launches into the air. The equation h=16t^2+64t+9 gives the height of the ball, h in feet, as a function of t, number of seconds after launch. What is the maximum height the ball reaches?