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Karolina [17]
2 years ago
6

3 plus the quotient of a number and 2 is 7. What is the number?​

Mathematics
2 answers:
Sidana [21]2 years ago
8 0
3 + x/2 = 7
x = (7-3)*2 = 8 = the number
TEA [102]2 years ago
3 0

Answer:

The required number is 8.

Step-by-step explanation:

Let the required number be <em>x</em>.

Now, it is given that, 3 plus quotient of a number and 2 is 7, then

3 + \frac{x}{2}=7

Subtracting '3' from both sides of the above equation, we get

3 + \frac{x}{2}-3=7-3

\implies\frac{x}{2} =4

Now, multiplying both sides by '2' in the above obtained equation, we get

\frac{x}{2}\times2 = 4\times2

\implies x = 8

So, the required number is 8.

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Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
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We want the confidence interval to be 5% or 0.05. Therefore
0.85 - 1.645 \sqrt{ \frac{0.85(1-0.85)}{n} }=0.05 \\ 0.85 -  \frac{0.5874}{ \sqrt{n} } =0.05 \\  \frac{0.5874}{ \sqrt{n} }=0.8 \\  \sqrt{n} = .7342 \\ n=0.54

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3 0
3 years ago
Simplify help me plss cuz I don’t find the answer
dusya [7]
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6 0
3 years ago
A large company increased its sales from last year to this year by 34%.
AlexFokin [52]

Given:

The last year sales = $288,000,000

Company increased its sales from last year to this year by 34%.

To find:

The this year's sales to the nearest million dollars.

Solution:

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The company increased its sales from last year to this year by 34%. So,

This year's sales =288+288\times \dfrac{34}{100}

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Therefore, this year's sales were 386 million dollars or $386,000,000.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

5 0
2 years ago
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