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20)What is the value of the expression 6 3/4(-11.5)A) 77 5/8B) 69 3/4C) -77 5/8D) -69 3/4

User Mashmagar
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1 Answer

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What is the value of the expression

(need to go from mixed to improper fractions and from decimal fractions)

6 3/4(-11.5)

6 3/4 = (24+3)/ 4 = 27/4

27/4 * (-11.5)

11. 5 = 11 1/2 = (22+1)/ 2 = 23/2

so then,

27/4 * (-11.5)

= 27/4 * (-23/2) (the result is negative value )

= - (27*23)/ (4*2)

= - (621)/ 8

= - (616 + 5)/ 8

= - 77 5 /8

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Answer

C) - 77 5 /8

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User Ssundarraj
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