The library uses a numbering system with 13 digits to catalogue all the books in the collection. Each digit can be 0-9. How many books can be in the collection without running out of ID numbers?

Wrote and expression for the difference of p and 4

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit