There are 13 students in a biology class and 12 students in a chemistry class. if there are 20 students in total, how many students are in both classes?

7 multiplied by 5 multiplied by 2 whole over 7 multiplied by 3, the whole raised to the power of 2 multiplied by 5 to the power of 0 over 2 to the power of negative 3, whole to the power of 3 multiplied by 2 to the power of negative 9 solve

A six-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. In the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times.

What is (4*3) + (2*3) = (6*3) =

What are the units of the expression 3.99p + 2.19p

There are 23 textbooks on the shelf in ms. McDonald's class. Each cover is 13 inches long and 5 inches wide? What is the combined area of all the textbooks?

Solve the inequality. |6p + 3| > 15

4.9t^2-2.78t-1.15=0 what is the value of T

Alexa is comparing the cost of lobster at two different restaurants. One restaurant called 'Lobster Foods' charges $18 for the lobster meal, plus $7 per kilogram of her choice of lobster.

Bob has 26 candy bars he eats 20 what does he have now?

Ken mails three packages at the post office that weigh 8.1, 8.5, and 8.9 pounds. The post office that Ken uses rounds the weight of a package to the nearest pound to determine the price of shipment.