C is the mid point of AB, if AC=3x+17cm, andCB=5x-7cm, what is the length of AB.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)