Gavin had 20 minutes to do a three-problem quiz. He spent minutes on Problem 1 and minutes on Problem 2. How much time did he have left for Problem 3? Write the answer in minutes and seconds. How many minutes did he have left?

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

Ined this is due tomorrow and i dont know the answer can you find all the exponents

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?