84.53 x 3.567
Step by step. EXplain please

What properties allow transformation to be used as a problem solving tool

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

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7