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3 years ago

X² - 4x + 24factor this

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

Function f(x) = x² - 4x + 24 does not have roots in set of real numbers.

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1 point

s2008m [1.1K]

Answer:

i do not know

Step-by-step explanation:

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3 years ago

A small lawnmower company produced 1,500 lawnmowers in 2008. In an effort to determine how maintenance-free these units were, th

ikadub [295]

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - α)% confidence interval for the average using the finite correction factor is:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

The information provided is:

$N=1500\\n=183\\\sigma=1.47\\\bar x=3.3$

The critical value of z for 95% confidence level is,

z = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

$=3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)$

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

7 0

3 years ago

50 POINTS

ludmilkaskok [199]

The area of the composite figure can be calculate

120 pi x 5.1 1922.6547
1922.6547 divided by 7.4 =259.8182
259.8182 + 3.2 = 263.0182

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2 years ago

Which word phrase represents this expression? 2n + 3

djverab [1.8K]

three more than twice a number.

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2 years ago

Read 2 more answers

125/250 in its simplest form

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1/2 is the simplest form

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3 years ago

X² - 4x + 24factor this​

X² - 4x + 24factor this