The measure of an angle is 3 what is the measure of a complementary angle

I’m really confused and need to learn this

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet

Randy and molly are selling pies for a school fundraiser customers can buy blueberry pies and pumpkin pies brandy sold 6 blueberry pies and for pumpkin pies for a total of $106 molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90 find the cost of each one blueberry pie and 1 pumpkin pie