Santiago has a loyalty card good for a 20% discount at his local grocery store. If the total cost, before tax and discount, of all the items he wants to buy is c, which expression represents the cost after the discount?

The diagram shows a 7cm by 6cm rectangle based pyramid. all the diagonal sides - ta, tb, tc and td are length 10cm. m is midpoint of rectangular base. work out height mt to 1 decimal place

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Math each whole number with a rational,exponential expression