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Paul [167]
3 years ago
15

2X+2Y=48 3X+Y=40 What is X and Y

Mathematics
1 answer:
marshall27 [118]3 years ago
4 0

Answer:

x=8

y=16

Step-by-step explanation:

2x+2y=48

3x+y=40

Ther is many ways to solve this, one of them is clearance:

WE CLEAR AN UNLOCKED (X) AND REPLACE IT IN THE OTHER

x= (40-y)/3

2[(40-y)/3] +2y=48

(80-2y)/3 +2y=48

(80-2y+6y)/3=48

80+4y=48(3)

4y=144

y= 144/4

y=16

x=(40-y)/3

x=(40-16)/3

x=24/3

x=8

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3 years ago
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Write an equation of the line passing through the points (4.15) and (-1. - 15).
jolli1 [7]

Answer:

y = 6x - 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

Point (4, 15)

Point (-1, -15)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{-15-15}{-1-4}
  2. Subtract:                       m=\frac{-30}{-5}
  3. Divide:                          m=6

<u>Step 3: Find y-intercept </u><em><u>b</u></em>

  1. Define:                    y = 6x + b
  2. Substitute:              -15 = 6(-1) + b
  3. Multiply:                  -15 = -6 + b
  4. Isolate <em>b</em>:                 -9 = b
  5. Rewrite:                   b = -9

<u>Step 4: Write linear equation</u>

<em>Substitute in all variables.</em>

y = 6x - 9

And we have our answer!

4 0
3 years ago
SOMEONE PLEASE ANSWER
dsp73

Answer:

-4

Step-by-step explanation:

that is the pattern

5 0
3 years ago
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Answer:

No, 40(2x - 16y) is not equivalent to 42 - 56y

Step-by-step explanation:

40(2x -16y)

If we expand the above expression, we will have

80x - 16y which is not equivalent to 42 - 56y

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7B3r%7D%5E%7B2%7D%20%20-%202%20%3D%2046" id="TexFormula1" title=" {3r}^{2} - 2 = 46" alt=
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4 years ago
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