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VMariaS [17]
3 years ago
10

Enter the simplified form of the complex fraction in the box.

Mathematics
1 answer:
Ket [755]3 years ago
3 0

The problem is:

\frac{\frac{3}{x}+\frac{1}{4}}{1+\frac{3}{x}}

We now do L.C.M. of numerator and add, also do L.C.M. of denominator and add together:

\frac{\frac{12+x}{4x}}{\frac{x+3}{x}}

Dividing by a fraction is same as multiplying by its reciprocal, so we have:

\frac{12+x}{4x} * \frac{x}{x+3} \\

x cancels out, so can multiply and write:

\frac{12+x}{4} * \frac{1}{x+3} \\=\frac{12+x}{4x+12}

This is the simplified form.


ANSWER: \frac{12+x}{4x+12}

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Which values of a and b make the equation true?
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Answer:

a=3

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(2xy)^4

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The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean
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68% of the incomes lie between $36,400 and $38,000.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ =  $37,200

Standard Deviation, σ = $800

We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.

Empirical rule:

  • Almost all the data lies within three standard deviation of mean for a normally distributed data.
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Thus, 68% of data lies within one standard deviation.

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Thus, 68% of the incomes lie between $36,400 and $38,000.

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