What is the distance between the origin and a point at (-15, 8)?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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.)

Find the distance between (7,-6) and (-3,-9)