One layer of earth's atmosphere is called stratosphere

The first hexagon is dilated to form the second hexagon select the answers from the drop box menus to correctly complete the statement

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)