2 years ago

Radical expression of 7 x 2 / 3

Mathematics

1 answer:

TiliK225 [7]2 years ago

5 0

I think it going to be 21/2 or 10 1/2

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Step-by-step explanation:

We are given:

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A person enters room, and then the mean age of 6 people is 17.

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The formula to calculate mean is: $Mean=\frac{Sum\:of\:all\:data\:values}{Number\:of\:data\:Values}$

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Let age of person whose age is unknown= x

Now finding x using mean formula

$Mean=\frac{Sum\:of\:all\:data\:values}{Number\:of\:data\:Values}\\17=\frac{17+16+ 15+ 17+ 22+x}{6}\\17=\frac{87+x}{6}\\17*6=87+x\\102=87+x\\x=102-87\\x=15$

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3 years ago