math
posted by momo on .
Hints to solve following nonlinear equation please?
y=4.9x^2+20x+10
9.8x+y=20

substitute y = 20  9.8x
into the first equation:
20  9.8x = 4.9 x^2 + 20x + 10
4.9 x^2  29.8x + 10 = 0
x = 5.725 or 0.356
and you can get y.
These are strange equations to "solve" since one is the equation of motion of a body, and the other is the equation of its velocity.