* 2. Which of the following sides form a right triangle?
1) 2,3,4
2) 1, 2, 3
3) 6, 8, 10
4) 5, 13, 15

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

If 25% of y is 30, what is 60% of y?

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?