Josie bought a new mirror. the mirror has 5 sides. what is the shape of the mirror?
a. heptagon
b. hexagon
c. pentagon
d. square

10% of 1,900,000. show me how you got the answer

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

Which will form a composite function?