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3 years ago

How to solve this 3 = (2x + 8)/3

Mathematics

2 answers:

seropon [69]3 years ago

5 0

Answer:

x = 1/2

Step-by-step explanation:

First you want to get rid of the fraction, so you can multiply both sides of the equation by 3.

9 = 2x + 8

Then, subtract 8 from both sides to get x by itself.

1 = 2x

Finally, divide both sides by 2 so you only have one x

1/2 = x

This means that the answer is x = 1/2.

padilas [110]3 years ago

4 0

Answer:

x=1/2 or 0.5

Step-by-step explanation:

(2x+8)/3=3

(2x+8)=3x3

(2x+8)=9

2x=9-8

2x=1

x=1/2

x=0.5

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The sum of the page numbers on the facing pages of a book is 73. What are the page numbers?

Sholpan [36]

Answer:

The page numbers are 36 and 37.

Step-by-step explanation:

n + (n + 1) = 73

2n + 1 = 73

n = (73 - 1)/2

= 72/2 = 36

3 0

3 years ago

Find the slope and the y-intercept of the graph of the linear equation. Then, graph the equation.

avanturin [10]

Answer:

The slope of the graph is: m = -6

The y-intercept of the graph is: b = 2

And the graph of the equation is shown below.

Step-by-step explanation:

We know that the slope-intercept form is

$y=mx+b$

Where m is the slope and b is the y-intercept

Given the equation

$y=-6x+2$

comparing with the slope-intercept form

slope = m = -6

y-intercept = b = 2

Thus,

The slope of the graph is: m = -6

The y-intercept of the graph is: b = 2

And the graph of the equation is shown below.

7 0

3 years ago

One day for plumbers in five helpers earned $350. At the same rate of pay, another group of five plumbers and six helpers earned

schepotkina [342]

Answer: a plumber earns $50 each day and a helper earns $30 each day.

Step-by-step explanation:

Let x represent the amount that a plumber earns in a day.

Let y represent the amount that a helper earns in a day.

One day, four plumbers and five helpers earned $350. This means that

4x + 5y = 350 - - - - - - - - - - -1

At the same rate of pay, another group of five plumbers and six helpers earned $430. This means that

5x + 6y = 430 - - - - - - - - - - - - 2

Multiplying equation 1 by 5 and equation 2 by 4, it becomes

20x + 25y = 1750

20x + 24y = 1720

Subtracting, it becomes

y = 30

Substituting y = 30 into equation 1, it becomes

4x + 5 × 30 = 350

4x + 150 = 350

4x = 350 - 150

4x = 200

x = 200/4 = 50

3 0

4 years ago

The picture below shows a right-triangle-shaped charging stand for a gaming system:

BaLLatris [955]

Answer:

3(tan 50°)

Step-by-step explanation:

I don't really get the question tho...

Hopefully it helps, tho!

4 0

3 years ago

Read 2 more answers

Solve the following system of equations. 2x+y=3 I= 2y - 1 x= y=

marin [14]

Note: I am assuming your second equation is:

x = 2y - 1

Answer:

The solution to the system of equations is:

x = 1

y = 1

Step-by-step explanation:

Given the system of equations

2x+y=3

x = 2y - 1

solving the system of equations using the elimination method

$\begin{bmatrix}2x+y=3\\ x=2y-1\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}2x+y=3\\ x-2y=-1\end{bmatrix}$

Multiply x-2y=-1 by2: 2x-4y=-2

$\begin{bmatrix}2x+y=3\\ 2x-4y=-2\end{bmatrix}$

subtracting the equations

$2x-4y=-2$

$-$

$\underline{2x+y=3}$

$-5y=-5$

now solve -5y = -5 for y

$-5y=-5$

Divide both sides by -5

$\frac{-5y}{-5}=\frac{-5}{-5}$

Simplify

$y=1$

For 2x+y=3 plug in y=1

$2x+1=3$

subtract 1 from both sides

$2x+1-1=3-1$

Simplify

$2x=2$

Divide both sides by 2

$\frac{2x}{2}=\frac{2}{2}$

Simplify

$x=1$

Therefore, the solution to the system of equations is:

x = 1

y = 1

8 0

3 years ago

How to solve this 3 = (2x + 8)/3​

How to solve this 3 = (2x + 8)/3