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amid [387]
3 years ago
14

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0

Answer:

a  x=-2

Step-by-step explanation:

2(x-4) = 4(2x + 1)

Distribute

2x-8 = 8x +4

Subtract 2x from each side

2x-2x-8 = 8x-2x +4

-8 = 6x+4

Subtract 4 from each side

-8-4 = 6x+4-4

-12 = 6x

Divide by 6

-12/6 = 6x/6

-2 =x

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The coordinates of the midpoint of AB are (2,4),
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Answer:

You can use the midpoint formula.

Method:

MAB = (Ax+Bx)/2 ; (Ay+By)/2

Substitute in what you have:

(2;4) = (Ax+3)/2 ; (Ay+7)/2

Because we know the x coordinate of the midpoint, we can assume that:

2 = (Ax+3)/2

And now solve for Ax:

4 = Ax+3
Ax = 1

Because we know the y coordinate of the midpoint, we can assume that:

4 = (Ay+7)/2

And now solve for Ay:
8 = Ay+7
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Therefore A(1;1)
7 0
3 years ago
Over the next 12 months you have to read more than 72 books. You have to read x books per month. The inequality 12x >72 repre
Lyrx [107]

Answer:

6 books per month

Step-by-step explanation:

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5 0
3 years ago
Simplify -1-7 + 41.
vodomira [7]

Answer:

33

Step-by-step explanation:

3 0
3 years ago
Find the solutions of the system y = –2x – 1 and y = 3–x–1.
sweet [91]

There are two intersection points (-1, 1) and (-2, 3), and the x coordinates are -1 and -2.

<h3>What is an exponential function?</h3>

It is defined as the function that rapidly increases and the value of the exponential function is always a positive. It denotes with exponent y = a^x

where a is a constant and a>1

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have two equations:

y = –2x – 1 and

\rm y = 3^{-x-1}

From the graph, we can see:

There are two intersection points:

(-1, 1) and (-2, 3)

The x coordinates are -1 and -2

x = -1, y = 1

x = -2, y = 3

Thus, there are two intersection points (-1, 1) and (-2, 3), and the x coordinates are -1 and -2.

Learn more about the exponential function here:

brainly.com/question/11487261

#SPJ1

5 0
2 years ago
Y=2x+1<br> How do I put this equation in order pair for a table
Ber [7]

Answer:

I think you would have to draw lines like is the graph book, you will see that they have two axes which is the y and the x.You will then have to fix in numbers and indicate the y= 2x+1.

Step-by-step explanation:

hope it helps

8 0
3 years ago
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