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Ivenika [448]
3 years ago
6

The mean of the numbers 5, 2x, 4 and 3 is 5 find the value of x​

Mathematics
2 answers:
Fittoniya [83]3 years ago
7 0

Answer:

<em><u>Mean</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>sum</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>outcomes</u></em><em><u>/</u></em><em><u>no</u></em><em><u>.</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>outcomes</u></em>

<em><u>5</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>(</u></em><em><u>5</u></em><em><u>+</u></em><em><u>2</u></em><em><u>x</u></em><em><u>+</u></em><em><u>4</u></em><em><u>+</u></em><em><u>3</u></em><em><u>)</u></em><em><u>/</u></em><em><u>4</u></em>

<em><u>2</u></em><em><u>0</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u>2</u></em><em><u>+</u></em><em><u>2</u></em><em><u>x</u></em>

<em><u>8</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>2</u></em><em><u>x</u></em>

<em><u>8</u></em><em><u>/</u></em><em><u>2</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>x</u></em>

<em><u>4</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>x</u></em>

<em><u>\\</u></em>

<h2><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em><em><u>_</u></em></h2>

Step-by-step explanation:

<h2>HOPE IT WILL HELP YOU✌✌✌✌✌</h2>
Alekssandra [29.7K]3 years ago
3 0

Answer:

X=4

Step-by-step explanation:

(5+4+3+2x)/4=5

(12+2x)/4=5

12+2x=20

2x=8

X=4

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What is 456.89 rounded to the nearest tens place
labwork [276]
456.89 would be 456.9 rounded to the nearest tenth.
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3 years ago
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if j is the number of integers between 1 and 500 that are divisible by 9 and k is the number of integers between 1 and 500 that
Morgarella [4.7K]

Answer:

  126

Step-by-step explanation:

The number of numbers divisible by 9 is ...

  j = floor(500/9) = 55

The number of numbers divisible by 7 is ...

  k = floor(500/7) = 71

Then the total (j+k) is ...

  j +k = 55 +71 = 126

3 0
4 years ago
What is the GCF of 15abc^2 and 25a^3bc
andrezito [222]
The first part of the answer can be found by finding the GCF between 15 and 25. 15 is divisible by 1, 3, 5, and 15. 25 is divisible by 1, 5, and 25. You can see that their GCF is 5. Next, you need to look at the variables. The first monomial has a, b, and c^{2}. The second monomial has a^{3}, b, and c. They each have at least one a, one b, and one c, so those will be in the GCF (abc). If you put that together with the 5, you get that the GCF is 5abc.
8 0
4 years ago
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A) how many men have a waist measurement of more than 85 cm
KATRIN_1 [288]

Answer:

(a)29

(b)91cm

(c)13cm

Step-by-step explanation:

(a)From the graph, 11 men have a waist measurement of 85cm and below.

Since the cumulative frequency is 40

Number of men who have a waist measurement of more than 85 cm

=40-11\\=29

(b)Median

\text{Median}=\dfrac{N}{2}\\N=40\\Median=\dfrac{40}{2}=20th$ item

Tracing 20 from the y-axis to the x-axis, the median waist measurement is 91cm.

(c)Interquartile Range

Interquartile Range = Q_3-Q_1

Q_1=\dfrac{N}{4}=\dfrac{40}{4}=10th$ item

From the graph, at y=10, x=84 cm

Q_3=\dfrac{3N}{4}=\dfrac{3*40}{4}=30th$ item

From the graph, at y=30, x=97 cm

Therefore:

Interquartile Range=97-84=13cm

5 0
3 years ago
Solve for x.<br> 2.8 + 2x<br> 8<br> =<br> 0.6<br> x = [?]
UNO [17]

Answer:

2.8 + 2x = 0.6

______

   8

multiply by 8 to both sides

x8          x8

2.8 + 2x = 4.8

subtract 2.8 from both sides

-2.8        -2.8

2x = 2

divide by 2 from both sides

/2      /2

x = 1

8 0
2 years ago
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