Find the diameter. A line that appears to be tangent is tangent.

The diameter is approximately? __

What percent of the circle below is shaded?

True or false? a circle could be circumscribed about the quadrilateral below.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]