Calculate the perimeter of the square with side length of 8 ft

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.