Sunny rode her bike 4 2/5 miles each day. If she rode her bike for 5 days, how many miles did she ride?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.