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Jet001 [13]
2 years ago
8

Split

2)" alt="(4ax-a^2)/(x^2+ax-2a^2)" align="absmiddle" class="latex-formula"> into partial fractions.
Mathematics
1 answer:
IRISSAK [1]2 years ago
8 0

The decomposition of the partial fraction is \frac{4ax-a^2}{(x+ 2a)(x-a)} = \frac{A}{x + 2a} + \frac{B}{x - a}

<h3>How to split the fraction?</h3>

The expression is given as:

\frac{4ax-a^2}{x^2+ax-2a^2}

Expand the denominator

\frac{4ax-a^2}{x^2- ax+2ax-2a^2}

Factorize

\frac{4ax-a^2}{x(x- a)+2a(x-a)}

Factor out x - a

\frac{4ax-a^2}{(x+ 2a)(x-a)}

The denominator of the partial fraction is a product of two linear factors.

So, the decomposition can be represented as:

\frac{4ax-a^2}{(x+ 2a)(x-a)} = \frac{A}{x + 2a} + \frac{B}{x - a}

Read more about partial fractions at:

brainly.com/question/18958301

#SPJ1

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The resting heart rate of 60 patients is shown in the frequency table below.
Murrr4er [49]

The standard deviation is 9.27. The typical heart rate for the data set varies from the mean by an average of 9.27 beats per minute.

<h3>How to determine the standard deviation of the data set?</h3>

The dataset is given as:

Heart Rate  Frequency

60 1

65 3

70 4

75 12

80 8

85 15

90 9

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100 3

Calculate the mean using

Mean = Sum/Count

So, we have

Mean = (60 * 1 + 65 * 3 + 70 * 4 + 75 * 12 +  80 * 8 +  85 * 15 +  90 * 9 +  95 * 5 + 100 * 3)/(1 + 3 + 4 + 12 + 8 + 15 + 9 + 5 + 3)

Evaluate

Mean = 82.25

The standard deviation is

\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f -1}}

So, we have:

SD = √[1 * (60 - 82.25)^2 + 3 * (65 - 82.25)^2 + 4 * (70 - 82.25)^2 + 12 * (75 - 82.25)^2 + 8 * (80 - 82.25)^2 +  15 * (85 - 82.25)^2 +  9 * (90  - 82.25)^2 + 5 * (95 - 82.25)^2 + 3 * (100 - 82.25)^2)]/[(1 + 3 + 4 + 12 + 8 + 15 + 9 + 5 + 3 - 1)]

This gives

SD = √85.9533898305

Evaluate

SD = 9.27

Hence. the standard deviation is 9.27. The typical heart rate for the data set varies from the mean by an average of 9.27 beats per minute.

Read more about standard deviation at:

brainly.com/question/4079902

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5 0
2 years ago
A box of LED light bulbs was tested to see how long the light bulbs last. The standard deviation of the light bulb lifetime data
SOVA2 [1]

Answer:

the answer is B

Step-by-step explanation:

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Ryan and his brother, Russell, made photo frames for their grandma's birthday. They used shells they collected from the beach ne
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Answer: No. The two frames does not have the same ratio of white shells to orange shells.

Step-by-step explanation:

Ryan glued 9 white shells and 15 orange shells to the border of his frame. This will give us a fraction of:

9/15 = 3/5

The ratio is 3:5

Russell glued 8 white shells and 10 orange shells to the border of his frame. This will give us a fraction of:

= 8/10 = 4/5

The ratio will be 4:5.

Therefore, the two frames does not have the same ratio of white shells to orange shells.

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Rewrite the expression in the form y^n <br><br> y^-7/y^-13
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Answer:

y {}^{n + 6}

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In the graphing tool, move the sliders for y=k(square root of x) and y= (square root of kx). Find a value of k where the graphs
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