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Lilit [14]
3 years ago
7

Jess recently started a business producing cosmetic products made from natural ingredients. She wants to advertise her products

by distributing bags of samples in her neighborhood. She calculated that it takes a person 2 minutes to prepare one bag.
How many hours will it take to prepare 1200 bags of samples if Jess and 7 of her friends work simultaneously?
Mathematics
2 answers:
vladimir2022 [97]3 years ago
7 0
6 hours I believe. I got the answer by multiplying 1200 by 2 because 2 seconds per bag then you divide by 7 then take that answer and divide by 60 because 60 minutes in an hour. 
mylen [45]3 years ago
4 0
Since it takes 2 minutes per bag, multiply that by how many bags need to be prepared and you have 2400 minutes. Now divide that by 60 to find out how many hours it will take (and this is currently only for one person) and you'll get 40. Now since we have 8 people working together, divide 40 by 8, and there's your answer. It will take 5 hours.
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Answer:

-->

Step-by-step explanation:

Graph (-5,-3) and use the slope, -2, to find another point. -2 can also be written as -\frac{2}{1}

\frac{rise}{run} =\frac{-2}{1} and  \frac{rise}{run} =\frac{2}{-1} **

Use both. This works because either way, they will lie on the same line with the same slope. So, starting at (-5,-3), go down two points (-)* and to the left 1 (+)*, then, starting at (-5,-3) again, go up two points (+)* then to the right 1 point (-)*.

* If the number is negative, you either go down or to the right. If the number is positive, you go up and to the left.

**Rise over run refers to the change in the y-axis and the change in the x-axis: \frac{rise}{run} =\frac{y-axis}{x-axis}. Only one number is negative because, if both were negative, that would make a positive number, but the slope is -2, not 2.

Another way you could do this is by finding points first. All you need to do is turn the slope into a "point". Remember, 2 is the y and 1 is the x:

-2=-\frac{2}{1} = (1,-2) and (-1,2)

Then, using (-5,-3) and your new points, add them separately:

(-5,-3)+(1,-2)\\(-5+1,-3+(-2))\\(-5+1,-3-2)\\(-4,-5)

(-4,-5) is one point

(-5,-3)+(-1,2)\\(-5+(-1),-3+2)\\(-5-1,-3+2)\\(-6,-1)

(-6,-1) is another point. Connect the three points. You can check your work on the graph:

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6x doesn't equal 4x+2

In order for them to be the same you would have to add the same terms example:

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Extra explaining:

The only way for those term to be added would be if they had the same variable since only 4x has a variable the 2 cant be added. In math you CANNOT move your variables off of a number and add them back on after.

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