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nata0808 [166]
3 years ago
9

Systems Of Elimination(PLZ HELP BEST ANSWER=Brainliest) x+2y=2 -x+3y=13

Mathematics
2 answers:
joja [24]3 years ago
6 0
<span>x + 2y = 2
-x + 3y = 13

As the x-terms of these equations are already opposites, you can begin to solve by elimination by adding the equations together.

</span>     x + 2y = 2
    -x + 3y = 13
+___________
     0 + 5y = 15
             y = 3

Now that you have y, substitute its value, 3, into either equation to find x.

x + 2y = 2
x + 2(3) = 2
x + 6 = 2
x = -4

Lastly, check all work by substituting both x- and y-values into both original equations.

x + 2y = 2
-4 + 2(3) = 2
-4 + 6 = 2
2 = 2

-x + 3y = 13
-(-4) + 3(3) = 13
4 + 3(3) = 13
4 + 9 = 13
13 = 13

Answer:
x = -4
y = 3

(-4, 3)
meriva3 years ago
6 0
It is systems of equations so you can use elimination to cancel out the x's. Stack the equations on top of each other and solve for Y because the X's should cancel out. Then stick the answer for Y back into the equation to find X. So the answer is Y=3 and X= -4
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3x + y = 17<br> 4x - y = 18
Inessa05 [86]
The two equations given are
3x + y = 17 and 4x - y = 18
Now we will first take one equation
3x + y = 17
Then
y = 17 - 3x
Now replacing the value of y in the second equation we get
4x - y = 18
4x - (17 - 3x) = 18
4x + 3x - 17 = 18
7x = 35
 x = 35/7
   = 5
Putting the value of x in the first equation we get
3x + y = 17
(3 * 5) + y = 17
15 + y = 17
y = 17 - 15
y = 2
So the value of x is 5 and y is 2
5 0
4 years ago
Read 2 more answers
A line has a slope of 1/7 and passes through the point (0, -2). What is its equation in
faltersainse [42]

Answer:

y=\frac{1}{7} x-2

Step-by-step explanation:

7 0
3 years ago
25 POINTS HELP PLEASE! Complete the table and pattern. Determine the common difference. Write the explicit rule.
Cerrena [4.2K]

Answer:

See the answers below

Step-by-step explanation:

Nine

The first step is to find the common difference. That's found by using

<em><u>Common Difference</u></em>

t4 - t3

t4 = - 15

t3 = - 19

t4 - t3 = -15 - - 19

t4 - t3 = -15 + 19

t4 - t3 = 4

t1 = - 27 which is the first term.

<em><u>Explicit formula</u></em>

tn = a + (n - 1)*d

tn = - 27 + (n - 1)*4

t5 = -27 + (5 - 1)*4

t5 = -27 + 4*4

t5 = - 11

<em><u>Recursive</u></em>

tn = tn - 1 + 4

Ten

<em><u>Common difference</u></em>

t4 - t3

21 - 15

Common difference = 6

t2 = 33 - 6

t2 = 27

<em><u>Explicit formula</u></em>

tn = a + (n - 1)*d

tn = 33 + (n - 1)*6

<em><u>Recursive Formula</u></em>

tn = tn-1  + 6

There are too many answers between the 2 questions that the exact format can be followed and have it make sense. You are better off following each question and writing down the answers as you come to them.

3 0
4 years ago
I made a square frame for my favorite bird picture from four wooden pieces. Each piece is a rectangle with a perimeter of 24 inc
kupik [55]

Answer:

The perimeter of the picture frame is 38.4 in.

The area of the picture frame is 92.6 in.².

Step-by-step explanation:

The given information are;

Perimeter of side piece of picture frame = 24 inches

Length of side piece = L

Width of side piece = W

Perimeter of side piece = 2 × (L + W) = 24

∴ L + W = 24/2 = 12 inches

Dimension of picture frame = Square frame with side length s

Number of side piece in picture frame = 4

Given that the length L > the width W, we have

Side length of wooden frame = L

Also, where the side piece are placed side by side, we have;

Side length of wooden frame = 4 × W

Therefore;

4 × W = L

Which gives

L + W = 12 inches

4 × W + W = 12 inches

W×(4 + 1) = 5·W = 12 inches

W = 12/5 = 2.4 inches

L = 4 × W = 4 × 12/5

L = 48/5 = 9.6 inches  Side length of wooden frame, s

The perimeter of the picture frame = 4 × s = 4 × 9.6 = 38.4 in.

The area of the picture frame = s × s = 9.6 × 9.6 = 92.6 in.².

7 0
3 years ago
Please helppp I need every problem to be done
Ipatiy [6.2K]

Answer:

a. two thousand

b. 6043

c. (8 x 10,000) + (5 x 1,000) + (0 x 000) + (2 x 10)

d. 10205041500

e. thirty hundred sixty million, twenty-five thousand, one hundred three

1. c

2. 334,333

3. 3,666,766

4. 39,959,992

5. 41,200,000,520

I hope this helps any.

4 0
3 years ago
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