Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x. y = 9 when x = 4
Write a direct variation equation that relates x and y.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

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)