Alexa has a total of 18 pens. 12 of the pens are blue, and the rest are
black. What is the ratio of black pens
to blue pens. Simplify in possible

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

You love to play soccer! you make a shot at the net 8 times during a game! of those 8 attempts, you score twice. what percent of the time did you score?