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3 years ago

Simplify completely ((x2-4x+4)/(x2+10x+25)) x ((x+5)/(x2+3x-10)) ...?

1 answer:

3 0

First of all you'll have to
Factor x^2-4x+4 = (x-2)^2
Factor x^2+10x+25 = (x+5)^2
Factor x^2+3x-10 = (x+5)(x-2)

So you'll have (x-2)^2/(x+5)^2 X (x+5)/(x+5)(x-2)
Then cancel the (x-2) and (x+5) on both sides

Thus getting the answer of x-2/(x+5)^2
or x-2/x+10+25

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3 years ago

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vladimir2022 [97]

Answer:

Step-by-step explanation:

a). Mean of the given data set = $\frac{32+28+18+40+22}{5}$

= 28

b). x $x-\overline{x}$ $(x-\overline{x})^2$

32 32-28 = 4 16

28 28 - 28 = 0 0

18 18 - 28 = -10 100

40 40 - 28 = 12 144

22 22 - 28 = -6 36

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c). Standard deviation = $\sqrt{\frac{\sum (x-\overline{x})^2}{n}}$

= $\sqrt{\frac{296}{5} }$

= 7.69

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= 34

Since mean of the data set is more close to each data, standard deviation will be less than the deviation given in part (c).

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3 years ago

Use any method to solve the equation. If necessary, round to the nearest hundredth. 9x^2-21=0

zavuch27 [327]

Answer:

x = 1.53, -1.53.

Step-by-step explanation:

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9x^2 = 21

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x = 1.53, -1.53.

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3 years ago

The formula for any geometric sequence is an = a1 · rn - 1, where an represents the value of the nth term, a1 represents the val

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Answer:

The second choice

Step-by-step explanation:

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