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Anika [276]
3 years ago
12

What is the value of x?

Mathematics
1 answer:
rewona [7]3 years ago
5 0

Vertical angles are equal

so

4x + 7 = 5(x - 4)

4x + 7 = 5x - 20

5x - 4x = 7 + 20

x = 27

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Set up a system of linear equations, and then solve for the indicated quantities.
hichkok12 [17]

9514 1404 393

Answer:

  • smaller: -4
  • larger: -1

Step-by-step explanation:

Substituting the given variables into the word problem, we have two equations:

  3x +3y = -15

  6x -3y = -21

Adding these equations eliminates y:

  9x = -36

  x = -4 . . . . divide by 9

Using this in the first equation, we have ...

  3(-4) +3y = -15

  -4 +y = -5 . . . . . divide by 3

  y = -1 . . . . . . . . . add 4

The smaller number is -4; the larger is -1.

7 0
3 years ago
Question 3,4&5 Cindy bought a car for $21,330. A few years later she sold the car for $19,700.find the percent of change in
san4es73 [151]

The change in value was 8% which amounts to $1630

Further explanation:

The change in value is calculated by using the initial price and selling price of the car.

Given

Purchase Price = P = $21330

Selling Price = S = $19700

As the selling price is less than the purchase price, Cindy had loss.

Loss=L= Cost\ price-selling\ price\\=21330-19700\\=\$1630

Percentage of loss will be calculated as:

Percent\ loss=\frac{1630}{21330}*100\\=8\%

The change in value was 8% which amounts to $1630

Keywords: Loss, Percentage loss

Learn more about profit and loss at:

  • brainly.com/question/1563227
  • brainly.com/question/1560475

#LearnwithBrainly

6 0
3 years ago
6r-2(r+8)=11<br> Solve equation
pav-90 [236]

6r-2(r+8)=11\ \ \ \ |\text{use distributive property}\\\\6r-2(r)-2(8)=11\\\\6r-2r-16=11\ \ \ \ \ |+16\\\\4r=27\ \ \ \ \ |:4\\\\r=6.75

4 0
3 years ago
What is 8(7x-2)-x=424 ?
valina [46]
X=8 i did mental math but 56x-16-x=424
                                            +16      +16
                                              55x=440
                                               /55  /55
                                                x=8
3 0
3 years ago
I need help I don’t know this question
murzikaleks [220]
So singlehandedly, November has 25% of the total rain in one year of New York's, which is 62.51 inches.

So, November receives: *percentage* x *total*
= 25% x 62.51 = 15.6275 in

------------------------------------------------------------------------------------------------------
So, in November, New Yorks receives 25% of total rain in one year, which is 15.6275 inches.
------------------------------------------------------------------------------------------------------

I'd like my Brainliest pls ;W;
4 0
3 years ago
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