Write a simplified expression for the length of the line segment AB, joining points AC- a, 7a) and B( 2a, 3a), if a is positive.

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Which compound inequality could be represented by the graph?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)