Suppose a and b are independent events. if p(a)=0.4 and p(b)=0.9, what is p(a ∩ b) ? answers- a. 36 b. 06 c. 04 d. 54

What term best describes a line ans a point that lie in the same plane

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

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