What is the distance of the line drawn between points (-1,-2) and (-9,4)?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

A50% increase followed by 33 1/2% decrease

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)