If the mean of the numbers 8, 9, 10, 11, and x is 12, then what is the value of x? A. 7

B. 12

C. 22

D. 38

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?