SOLUTION: Hi! I just want to know how to transform this equation to a quadratic equation.. and Kindly please tell me how you did it. Just for my physics problem. Thanks! :D -40 = 100t +

Question 944828: Hi! I just want to know how to transform this equation to a quadratic equation.. and Kindly please tell me how you did it. Just for my physics problem. Thanks! :D
-40 = 100t + 1/2 (-9.8)t^2
It should come like this, right?
-40 = 100t - 4.9t^2
But how to arrange them? thanks! :D
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
-40 = 100t + 1/2 (-9.8)t^2
-4.9t^2 +100t +40 = 0
this is an equation of a parabola that opens downward
max height in meters is determined by solving for the axis of symmetry
t = -b/2a = -100 / (2*-4.9) = 10.204081633, therefore
max height occurs at 10.204081633 seconds and max height is
h(t) = -4.9(10.204081633^2) +100*(10.204081633) +40
max height = 550.204081633 meters

RELATED QUESTIONS
Hi! Please transform the given rational equation to quadratic equation. *Okay, This is (answered by Fombitz)

Hi guys just want to ask on how to get x and y in this equation. 40x+35y=20,000 and... (answered by MathLover1)

Hi, I am doing a question in a assignment where I have to transform the equation to... (answered by ewatrrr)

Hi I am in the 8th grade and I am not good at algebra at all but I know I have to learn... (answered by nerdybill)

How did you transform each equation into a quadratic... (answered by josgarithmetic)

Hi everyone, I need to know how to solve this equation 8x^6+7x^3-1=0 by using the... (answered by xcentaur)

im having problems with my hwk...we did this along time ago and i just dont remember. i... (answered by solver91311)

{{{sqrt(x+6) + sqrt(2-x) =4}}} I know that I need to turn it into a quadratic... (answered by Alan3354,greenestamps)

Hi everyone! Fombitz just kindly solved one of my problems and I wanted to thank him... (answered by Fombitz)