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Paladinen [302]
3 years ago
6

Solve the system of linear equations by elimination. 3x+2y=3 3x−2y=−9

Mathematics
1 answer:
kondaur [170]3 years ago
6 0

Answer:

x=-1, y=3

Step-by-step explanation:

3x+2y=3

3x-2y=-9

since we have -2y and 2y we can just add the equations

6x=-6

x+0y=-1

x=-1

to solve x using elimination multiply the top equation by -1

-3x-2y= -3

3x-2y=-9

and add

0x-4y=-12

-4y=-12

y=3

and substitute x and y to double; check

3(-1)+2(3)=3

-3+6=3

3=3

checks out so these are correct

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Whats a equation for a linear function that passes through the point (3,7) and (0,13).
allsm [11]

Answer:

Step-by-step explanation:

First do your x2-x1/y2-y1 to find slope, which is 0-3/7-13 = -3/-6 = 1/2

Then plug into point slope form (choose either point)

(y-13) = 1/2(x-0)

OR

(y-7) = 1/2(x-3)

3 0
3 years ago
Find the value of x in the equation 3/4 (8x -6 )-2 = 1/2 (1-2x)
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7 0
3 years ago
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If 45% of a bill is fo labour what is the total bill if the labour cost is 135$
Tomtit [17]

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7 0
3 years ago
You wish to take a flight from Nevada to New York. Use the point (-4, 0) to represent Nevada, and the (5, 2) to represent New Yo
mojhsa [17]

Using proportions, it is found that the ordered pair that represents the location of the layover is (3.75, 1.5).

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

The flight distance is partitioned in a ratio of 3:1, hence, for both the x and y coordinates, we have that:

L - Nv = 3/4(Ny - Nv)

For the x-coordinate, we have that:

x + 4 = \frac{3}{4}(5 + 4)

x = \frac{27}{4} - \frac{16}{4}

x = \frac{11}{4}

x = 3.75

For the y-coordinate, we have that:

y = \frac{3}{4}(2)

y = \frac{6}{4}

y = 1.5.

The ordered pair that represents the location of the layover is (3.75, 1.5).

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

7 0
2 years ago
I neeeeeed help RIGHT NOW​
Alborosie

Answer:

A. Raheem

Step-by-step explanation:

it can't be any of the answers that have addition because -4 has to move up 8 spaces on the y axis to get to +4 and -2 needs to move up 4 spaces to get to +2 and you can only use 1 rule so A is correct

please give me brainliest

6 0
2 years ago
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