Mathematics, 16.11.2019 07:31 Theblackdot15
The total cost of four pens and seven mechanical pencils is $9.73. the cost of each mechanical pencil is 0.75 cents. which represents the cost of each pen?
(a) $0.75
(b) $1.00
(c) $1.12
(d) $1.30
Answers: 1
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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
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The total cost of four pens and seven mechanical pencils is $9.73. the cost of each mechanical penci...
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