9. what is the probability of landing on a prime
number on this spinner?
2 6 21 9 5 15 6 13

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?