Convert 6.7 hours to hours and minutes. a) 6 hours and 30 minutes b) 6 hours and 36 minutes c) 6 hours and 42 minutes d) 6 hours and 48 minutes e) 6 hours and 54 minutes

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