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3 years ago

Please answer this for me

Mathematics

2 answers:

Pie3 years ago

5 0

3) 2,000.376 inches of water
4) 30.375 for 1 box, 91.125 inches for all three
5) 4,536 feet
6) 24 feet

deff fn [24]3 years ago

4 0

3- multiply 12.6 by 4
4-multiply 4.5 by 4.5 by 3 and once you got your product multiply that by 3
5- multiply 14 by 9 by 6 once you get your product multiply that by 6
6- multiply 4 by 3 by 2 equals 24 feet

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14. A quadratic equation is graphed above.

IrinaVladis [17]

Answer:

Step-by-step explanation:

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3 years ago

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alexandr1967 [171]

Answer:

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Step-by-step explanation:

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2 years ago

What is the value of x?<br> x = [ ? ]

Mnenie [13.5K]

Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

Put these numbers in descending order 0.2 0.92 0.387 0.479

ozzi

0.92 , 0.479 , 0.387 , 0.2

[See the last first digit after the decimal. I chose 0.92 since 9 is the greater than 2,3 and 4]

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2 years ago

Flow meters are installed in urban sewer systems to measure the flows through the pipes. In dry weatherconditions (no rain) the

ziro4ka [17]

Answer:

a) $\frac{(8)(30.23)^2}{20.09} \leq \sigma^2 \leq \frac{(8)(30.23)^2}{1.65}$

$363.90 \leq \sigma^2 \leq 4430.80$

Now we just take square root on both sides of the interval and we got:

$19.08 \leq \sigma \leq 66.56$

b) For this case we are 98% confidence that the true deviation for the population of interest is between 19.08 and 66.56

Step-by-step explanation:

423.6, 487.3, 453.2, 402.9, 483.0, 477.7, 442.3, 418.4, 459.0

Part a

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

On this case we need to find the sample standard deviation with the following formula:

$s=sqrt{\frac{\sum_{i=1}^8 (x_i -\bar x)^2}{n-1}}
And in order to find the sample mean we just need to use this formula:
[tex]\bar x =\frac{\sum_{i=1}^n x_i}{n}$