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ddd [48]
3 years ago
12

-9x-3y=-18 -3x+y=4 solve the system of equation

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0
Answer would be x = 1/3 and y = 5
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Mei bought a box of markers for b dollars, a shoulder bag that cost twice as much as the box of markers and a pen that cost $6 l
Masteriza [31]
Box of markers = $ B

Shoulder bag =  Twice as much as the box of markers = $ 2B

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Hence, the cost of pen is $ (2B - 6).
3 0
3 years ago
Solve the linear system using substitution
levacccp [35]
Hello there!

3x - y = 3
-x + y = 3

We need to solve 3x - y = 3 for y

Let start by adding -3x to both sides

3x - y = 3

3x - 3x - y = 3 - 3x

-y = 3 - 3x
We cannot leave the variable with a negative sign. We must multiply both sides by -1

-y * -1= (3 - 3x)-1

y = 3x - 3

Substitute 3x -3 for y in -x+y=3

-x + y = 3

-x + 3x - 3 = 3

2x - 3 = 3

2x = 3 + 3

2x = 6

x = 6/2

x = 3

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y = 3x - 3

y = 3(3) - 3

y= 9 - 3

y= 6

Thus,

The answer is x=3 and y=6

It is always my pleasure to help students like you :)

As always, I am here to help!


7 0
4 years ago
What is the initial value of the equation shown?
Ksju [112]

Answer:

Y = 2

Step-by-step explanation:

if you were looking for y's value

3 0
2 years ago
Which of these relationships would most likely have a NEGATIVE correlation?
Luda [366]
<h3>Answer:  Choice C</h3>

Explanation:

As the person spends more time raking, the number of leaves will go down. Therefore, we have a negative correlation. Such correlations occur when one variable goes up while the other goes down (and vice versa).

The reason why it's considered negative correlation is because the regression line has a negative slope.

This is why choice C is the answer. This assumes that no extra leaves fall on the ground, and we assume that we don't have nearby leaves blow into the yard.

In contrast, something like choice A has both variables go up together. As the temperature rises, so does the ice cream sales. The same goes for choice B. We consider these cases to have positive correlation. Choice D doesn't appear to have any correlation at all. The person's height doesn't have any connection to the number of pets they may have.

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2 years ago
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In 10 months Lisa will have paid the same amount as Kelly, but in month 11 she will have paid more.
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