One of the base angles of an isosceles triangle is 70°, and the vertex angle is 5x+5. What are the measures of x and the vertex angle? *

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant. given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?