40 people are in a classroom. Everyone is sitting in either pairs of desks (2 desks together) or in a group of 4 (4 desks together). All 40 people are sitting in their own desk. There are 2 more pairs of desks than groups of desks. How many of each seating arrangement is there?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?