The number of children's movie tickets sold over a period of a week is

Mathematics

1 answer:

Mnenie [13.5K]3 years ago

5 0

Answer:

A. 17

Step-by-step explanation:

The "mean" is the same as an average.

To find the mean, add all the numbers.

Then divide that sum by the total numbers you added.

18+23+9+16+30+16+7=119.

119/7= 17. (We divided by 7 because we added 7 numbers)

Hope this helps!

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Sonja [21]

$\frac{2x}{5} + 1 = \frac{1}{15}$

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Take away 1 from both sides
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$\frac{2x}{5} = \frac{1}{15} - 1$

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Evaluate the value on the right
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$\frac{2x}{5} = - \frac{14}{15}$

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Multiply by 15 on both side
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$\frac{2x}{5} \times 15 = - \frac{14}{15} \times 15$

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Evaluate
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$6x = -14$

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Divide by 6 on both sides
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$x = - \frac{14}{6}$

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Simplify
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$x = - \frac{7}{3}$

$Answer \: x = - \frac{14}{6} \ or - \frac{7}{3}$

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