Solve for the inequality for x. 12x> 9(2x-3)-15

Three coins are flipped. what is the probability that there will be at least two tails?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?