Atree casts a shadow that is 20 feet long . frank is 6 feet tall, and while standing next to the tree he casts a shadow 4 feet long.

a. how tall is the tree?

b. how much taller is the tree than frank?

What is a graph with a never ending line called?

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.