chelms185 chelms185

23-10-2017
Mathematics

contestada

The quotient of 9 times an unknown number and 16 is 81. What is the value of the unknown number?

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mathstudent55 mathstudent55

23-10-2017

Quotient means division.

(9x)/16 = 81

9x = 1296

x = 144

The unknown number is 144.

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SiobhanSullivan SiobhanSullivan

23-10-2017

9 * x * 16 = 81
divide both sides by 9
x * 16 = 9
divide both sides by 16
x = 0.5625
double check the answer
9 * 0.5625 * 16 = 81?
yes

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