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Marat540 [252]
4 years ago
11

X+y=3 3x-y=-7 elimination method

Mathematics
1 answer:
Alina [70]4 years ago
3 0

x + y = 3

+ x - y = -7

-------------------

2x = -4

x = -2

-2 + y = 3

y = 5

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Answer:

Cole has 15 pencils.

Step-by-step explanation:

First, we have the equation c + o =18, c representing cole, and o representing connor.

From there, we get 5o=c

Using substitiution, we get o=3

5(3)=15

15+3=18

8 0
2 years ago
Malcom’s Tee Shirt & Jacket Company is to produce a new line of rain coats. There are fixed costs of $570 to set up for prod
Dimas [21]

Answer:

C(x)=30x+570

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Step-by-step explanation:

Let x represent number of rain coats and C(x) represent total cost to produce new line of rain coats.

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The cost of x jackets would be 30x.

The total cost of x jackets would be variable cost of x jackets plus fixed costs that is $570.

Therefore, the total cost of producing x rain coats would be C(x)=30x+570.

To find the total cost of producing 118 rain coats, we will substitute x=118 in the above equation as:

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C(118)=3540+570

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6 0
3 years ago
Based on the estimated cost of college from step 1, determine how you are going to pay for college. You will need to do some res
Nezavi [6.7K]

This is a budgeting exercise. Based on the estimated cost of college which was set at $58,000, the following steps indicate how I intend to pay for college:

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<h3>What is budgeting?</h3>

Budgeting is simply the process of outlining the total expense requirements of an individual person or a corporate entity and how those expenses will be satisfied and efficiently allocated.

From the above, the total sum of $58,000 will be satisfied from three sources:

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Learn more about budgeting at;

brainly.com/question/24940564
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8 0
2 years ago
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Sholpan [36]

Answer:

x=2.5

Step-by-step explanation:

3 0
3 years ago
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malfutka [58]

Answer:

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The slope is the coefficient of x which is - 8/3

If you don't understand, please leave a comment

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