Josh flips a colored chip that is red on one side and black on the other a total of 20 times. what is the probability of the 21th flip resulting in landing on the black side up?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

What is the 12th term of b(n)=-4-2(n-1)

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?