PLS HELP harold tosses a nickel 4 times, find the probability that he at least gets as many heads as tails

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?