Which two lines are parallel to each other? Line A: y = 7x + 10
Line B: 2y = -14x + 16
Line C: -5y = -35x + 15
Line D: 28x + 4y = 56

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Which value is not a solution of 8x^3 – 1 = 0

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters