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laila [671]
3 years ago
5

Step by step solve 3x + 4 = 5x + 28

Mathematics
2 answers:
ankoles [38]3 years ago
3 0

Answer:

x = -12

Step-by-step explanation:

Step 1: Subtract 5x from both sides.

3x + 4 - 5x = 5x + 28 - 5x

-2x + 4 = 28

Step 2: Subtract 4 from both sides.

-2x + 4 - 4 = 28 - 4

-2x = 24

Divide both sides by -2.

-2x/-2 = 24/-2

x = -12

Citrus2011 [14]3 years ago
3 0

Answer:

x= -12

Step-by-step explanation:

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The pair of points (-4, y) and (5, 7) lie on a line with slope . What is the value of y? You must show all of your work to recei
Svetach [21]

The slope of a line is given by the ratio of the rise to the run of the line.

The value of, y is <u>4</u>

Reasons:

The given points on the line are; (-4, y), and (5, 7)

The slope of the line, = \dfrac{1}{3}

Required:

To find the value of <em>y</em>

<em />

Solution:

The formula for the slope is given as follows;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

Where;

(x₁, y₁) = (-4, y)

(x₂, y₂) = (5, 7)

Which gives;

Slope, \, m =\dfrac{7-y}{5-(-4)} = \dfrac{7-y}{5+4} =\dfrac{1}{3}

3·(7 - y) = 1·(5 + 4) = 9

21 - 3·y = 9

3·y = 21 - 9 = 12

y = \dfrac{12}{3} = 4

The value of, y = <u>4</u>

Learn more here:

brainly.com/question/1617757

8 0
3 years ago
Use the table to work out the values of a, b,
Dvinal [7]
So to find the value of -3 do the following process:

Insert the -3 in the x’s in the equation on the top of the table

y= 5x -3x to the second power + 3

y= 5 (-3) -3(-3) to the second power + 3

Then continue to simplify the equation

y= -15 + 9 to the second power + 3

y= -15 + 84

y = 69

Y= 69 for the chart for -3

For b, c, and d insert the number in the x values and simplify like the previous equation.

If you are confused, feel free to ask questions. I hope this is effective and helps you in your studies.
4 0
2 years ago
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