Thread: finding x in this parabolas equation

1. finding x in this parabolas equation

okay i've got y and the size of the parabola but i need the number x for the question! thanks. need this ASAP as exam is tomorrow!!

20 = -0.222x(x -24)

2. Originally Posted by leahx22
okay i've got y and the size of the parabola but i need the number x for the question! thanks. need this ASAP as exam is tomorrow!!

20 = -0.222x(x -24)
Expand and re-arrange into the form ax^2 + bx + c = 0. Now use the quadratic formula.