Cho mặt bậc hai
z=\sqrt(x^(2)+y^(2))

. Đây là mặt gì?

Answer this question only if you know the answer! 30 points and

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

I'm marking the brainliest and it's 15 points