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yanalaym [24]
3 years ago
5

What is the value of x? Enter your answer in the box.

Mathematics
2 answers:
nignag [31]3 years ago
7 0

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

The whole triangle and the small triangle are similar. Therefore the sides are in proportion.

We have the equation:

\dfrac{(2x+10)+3}{40+5}=\dfrac{3}{5}\\\\\dfrac{2x+13}{45}=\dfrac{3}{5}\qquad\text{cross multiply}\\\\5(2x+13)=(45)(3)\qquad\text{divide both sides by 5}\\\\2x+13=(9)(3)\\\\2x+13=27\qquad\text{subtract 13 from both sides}\\\\2x=14\qquad\text{divide both sides by 2}\\\\\boxed{x=7}

olchik [2.2K]3 years ago
4 0

Answer:

The value of x is 7

Step-by-step explanation:

In order to find this, we must create a proportion using the smaller triangle (right/left) and then the whole triangle (right/left)

5/3 = 45/2x+13

Now cross multiply to solve

5(2x + 13) = 45*3

10x + 65 = 135

10x =- 70

x = 7

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7 0
3 years ago
29. Family income in the middle class: Bauer et al. (2011) identified the median income of a middle-class family in their sample
GREYUIT [131]

Answer:

No it is not

Step-by-step explanation:

The median is 84200

The mean is 85300

Low income is 65100

High income is 103400

From this information, we can see a skewed data. The mean would not be a good estimate value. Rather the center (median) would be more appropriate.

When we calculate the middle value for this data

65100+103400 = 168500/2 = 84250

84250 is closer to the median score of 84200. The median is best in the presence of outliers.

8 0
2 years ago
Bookshelf is 51 inches tall how tall is it in feet
Igoryamba
The bookshelf is 4'3" tall. There is 12 inches in a foot twelve times 4 is 48. 48 plus three is fifty-one.
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3 years ago
What fraction is equal to 1/5? 4/7 , 6/30 , 5/15
Zolol [24]
There are a lot of fraction that can be equal to the values given above. It can be as follows:

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5/15 = 1/3 , 10/30, 20/60 

Hope this helps. Have a nice day.</span>
6 0
3 years ago
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Hope this helps :)
7 0
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