Prove that the value of the expression a^2–a is divisible by 2 for any whole value of a.

Which math sentence can be used to determine if the triangle is a right triangle?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.