The expressions 5x20, and 10 - represent the lengths of the sides of a
x +4' an x-4 tep
triangle. Write a simplified expression for the perimeter of the triangle.

Mindy bought 5/8 pound of almonds and a 3/4 pound of walnuts.which pair of fraction cannot be used to find how many pounds of nuts she bought in all.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class