Which expression combines like terms to be equivalent to the expression shown below? 5x+6x - 3+10

You paid $7.70 to the mail package that weighed 5.5 lb. right and solve any quetion to find the cost per pound ? ?

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

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