Combine the following fractions by addition or subtraction as directed.
3/a+2+4/2-a-6/a^2-4

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.