The height s metres of a mass thrown vertically upward at a time t seconds given by

S=40t-13t2

Show when 25m= 40t - 13t2, 13t2 - 40t + 25 = 0

There is something about what you do to one side you have to do to the other?

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- Mar 20th 2012, 03:42 AMHollieMay2600Maths Homework.
The height s metres of a mass thrown vertically upward at a time t seconds given by

S=40t-13t2

Show when 25m= 40t - 13t2, 13t2 - 40t + 25 = 0

There is something about what you do to one side you have to do to the other? - Mar 20th 2012, 03:49 AMProve ItRe: Maths Homework.
What is m?

- Mar 20th 2012, 04:02 AMHollieMay2600Re: Maths Homework.
- Mar 20th 2012, 04:31 AMprincepsRe: Maths Homework.
- Mar 20th 2012, 06:49 AMHallsofIvyRe: Maths Homework.
- Mar 20th 2012, 06:56 AMprincepsRe: Maths Homework.
Yes it is clear now , after original post is edited .