Brad put 10 crickets in his pet lizards cage. After one day Brad's lizard had eaten 20% of the crickets of the crickes he had put in the cage. By the end of the next day, The lizard had eaten 25% of the remaining cricets how many crickets were left in at the end of the second day?​

Describe all the numbers that when rounded to the nearest thousand are 645,000

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

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