A dolphin swims 6 meters below the surface of the ocean. Then it jumps to a height of 5 meters above the surface of the water. What is the difference between these two distances?

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Solve the triangle. a = 21°, c = 105°, c = 5

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?