You need 4 1/8 yard of blue silk to make one bridesmaids dress and 3 5/8 yards of the same fabric to make another. how many yards of blue silk do you need to make both dresses

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

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

Solving algebraic equations 2m+3=11