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20-01-2016
Mathematics

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Evaluate the expression, using the given value of the variable. z ÷ 4 – 8z + 2(z – 5) when z = 12 A. –79 B. –74 C. –34 D. 107

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Billymkhoi Billymkhoi

20-01-2016

At z= 12:

z/4 -8z+ 2(z-5)
= 12/4 -8*12+ 2(12-5)
= 3 -96+ 2*(7)
= -93+ 14
= -79

The correct answer is A. -79~

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