who can simplify this using properties of exponents and base. but u can not have a negative exponent and u cant evaluate 9^8/9^4

What statement is true? 2x^2-9x+2=-1

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Nikolas calculated the volume of the prism. his work is shown below.