Point m is on a line segment LN. Given LN= 4x, MN = x, and LM = 3, determine the numerical length of LN?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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