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Basile [38]
3 years ago
6

Solve.

Mathematics
2 answers:
andre [41]3 years ago
5 0

Answer:

[4, -2]

Step-by-step explanation:

{y = x − 6

{3x + 2y = 8

3x + 2[x − 6] = 8

3x + 2x - 12 = 8

|______|

5x - 12 = 8

+ 12 + 12

____________

5x = 20

__ __

5 5

x = 4 (Plug this back into the both equations above to get the y-coordinate −2); −2 = y

I am joyous to assist you anytime.

vladimir1956 [14]3 years ago
4 0
Y=x-6
3x+2y=8

Using substitution method:
3x+2(x-6)=8
3x+2x-12=8
5x=20
x=4
Now substitute x in one of the two equations given to find y:

y=4-6
y=-2

The solution is (4,-2).
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How do you evaluate the expression 7x + 4 for x = 6
alekssr [168]

Answer:

46

Step-by-step explanation:

7x+4

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42+4

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3 0
4 years ago
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What is the product of<br> 9/20 - 1/4
wlad13 [49]

Answer:

\frac{1}{5}

Step-by-step explanation:

\frac{9}{20} - \frac{1}{4}

Make sure they have a common denominator. To do so, you must find a number the both have in come. Here, the number they have in common is 20.

What times 4 equals 20? 5. Whatever you do to the denominator you must do to the numerator.

\frac{5}{5} × \frac{1}{4} = \frac{5}{20}

Now you have \frac{9}{20} - \frac{5}{20} = \frac{4}{20}

Then you can simplify \frac{4}{20} to \frac{1}{5} by dividing it by \frac{4}{4}

8 0
3 years ago
The answer to this question
ss7ja [257]

Answer:

idk

Step-by-step explanation:

4 0
4 years ago
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Kyndal wants to buy a lamp that
fenix001 [56]

Answer:

$39.36

Step-by-step explanation:

Since its 20% off that means we still have a remaining 80% so first multiply 0.8 to the 82

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5 0
3 years ago
An equation is shown below: 6(2x - 11) + 15 = 21 Write the steps you will use to solve the equation and explain each step.
serious [3.7K]
6(2x-11)+15=21
12x-66+15=21
12x=21-15+66
12x=72
x=72/12
=6
This is the answer and way of solving
Hope this helps
All the best
7 0
4 years ago
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