Describe IN WORDS how you would solve the equation: 4 + x = -9

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

What is the standard form of -5x^2+2x^4-11+x^3+3x

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