How do you write 39/50 as a percentage?

Which ahows the graph of the solution set of 6x+4y< 12

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)

Benjamin is making bow ties. how many 1/2yards lomg bow ties can he make if he has 18 feet of fabric?