One hundred draws are made at random with replacement from a box with ninety-nine tickets marked "0" and one ticket marked "1." true or false, and explain:
(a) the sum will be around 1, give or take 1
(b) there is about a 68% chance that the sum will be in the range 0 to 2.

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Math each whole number with a rational,exponential expression

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