As part of an installation of 18 new air-conditioning units, a line set of acr tubing will need to be made for each unit. ten of the units will need a 1/2-inch diameter suction line that is 22 feet and 17 1/2 inches long. the remaining units will need the same size and suction line; however, the liquid line will need to be the same diameter but 3/4 inch shorter in length

Which of the following expressions is equal to 2x^2+8

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)

Two numbers have a sum of -19. one number is x. what expression represents the other number?