In an isosceles triangle, the third angle is ten times the measure of each of the congruent angles. what is the measure, in degrees, of the largest angle? explain how you got this answer.

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?