Barton is setting up for a checker game tournament. he finds that someone has put all of the checkers for the game boards into one bag. he counts the checkers to see if they are all there. the bag contains 12 more red checkers than black checkers . the bag contains a total of 132 checkers

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements

Indicate the formula for the following conditions: p^c(n,r)=