A box contains a total of 12 books. Each hardcover book weighs 2 pounds, and each paperback book weighs 1 pound. The total weight of the books is
20 pounds
The system of equations and the graph for this situation are shown.
x+y=12
2x + y = 20
tise the graph to find the numbers of hardcover and paperback books in the
A. 4 hardcover books and 8 paperback books
OB. 8 hardcover books and 4 paperback books
O C. 10 hardcover books and 12 paperback books
D. 6 hardcover books and 6 paperback books

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

What is the number 321,000,000 in scientific notation? also what is the number? ?

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck