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Sergio [31]
3 years ago
12

How would I work this question? x+10y= -9 and x=5y+21

Mathematics
1 answer:
MatroZZZ [7]3 years ago
8 0

Answer:

what you do is you want to get the x by it self so you would subtract the x and put it on the other side. like this: 10y=-9-x. OK so you would subtract -9 and put it on the other side like this: 9 + 10y=-x. but you can't have a negative x so u would do -9 + 10y=x.

Step-by-step explanation:


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2 years ago
Some members of the cooking club are making cakes which they will sell at a street fair for $10 apiece. It costs $10 for a booth
Alika [10]

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The cooking club sales covers the expenditure when 2 piece of cakes are sold.

Step-by-step explanation:

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We need to find the number of pieces of cake sold when the sales cover the expenditures.

Solution:

Let the number of pieces be 'x'

So We can say that the point at which the sales cover the expenditures can be calculated as Selling price of each piece of cake multiplied by number of pieces will be equal to Cost for booth at fair plus Ingredients for each piece of cake multiplied number of piece of cakes.

framing in equation form we get;

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Now Subtracting both side by '5x' using Subtraction property we get;

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Now Dividing both side by 5 we get;

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Hence The cooking club sales covers the expenditure when 2 piece of cakes are sold.

7 0
2 years ago
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