In the diagram of △JML below, NK ∥ML, JN=6, NM=30, and JK=7. What is the length of JL?

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.

3. simplify. 312⋅312 4. rewrite n√xm using a rational expression.