Connor flips a coin four times. if he can assume that heads occurs 50% of the time and tails occurs 50% of the time, what is the probability of at most 2 heads appearing?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625