4 years ago

14 pencils every 4/9 of an hour. How many pencils used in an hour.

1 answer:

Aleks [24]4 years ago

3 0

31.5 pencils used in 1 hour

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Step-by-step explanation:

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nignag [31]

The slope-point formula:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

We have (3, -5) and (-8, 4).

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$m=\dfrac{4-(-5)}{-8-3}=\dfrac{9}{-11}=-\dfrac{9}{11}\\\\y-4=-\dfrac{9}{11}(x-(-8))\\\\y-4=-\dfrac{9}{11}(x+8)\to C)$

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