What is 8z + x -5 - 9z + 2 written in simplest form

Identify the number 127 as a rational or irrational. explain

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)

With both problems. a.s.a.p directions on photo ^