What is the circumference of a circle with a radius of 20ft

Consider the following equation. 1/2x^3+x-7=-3sqrtx-1 approximate the solution to the equation using three iterations of successive approximation. use the graph below as a starting point. a. b. c. d.

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3