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2 years ago

BRAINLIEST ANSWER

Mathematics

2 answers:

SIZIF [17.4K]2 years ago

8 0

Answer:

cos(e) sin(e) is the he correct ratio

Vilka [71]2 years ago

4 0

Answer:

/25 is the trigonometric

tan=24

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14 1/5 - 5 5/6 as a fraction

melomori [17]

Answer:

$\frac{251}{30}$ or 8 $\frac{11}{30}$

Step-by-step explanation:

4 0

2 years ago

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Rachel is a lunchroom supervisor at West School. The children eat lunch at 15 long tables. When all tables are used, 240 childre

USPshnik [31]

The answer is c
$\frac{240}{15 } \\ = 16$

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2 years ago

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GEOMETRY HELP ASAP!!!!!!!!!!!!!!!!!!!

vovangra [49]

Area of equilateral triangle = a^2/4 * √3 so side of triangle = a

but if area of equilateral triangle = area of square multiplied by √3 then area of square = a^2 / 4 so side of square = a/2

the ratio length of side triangle to length side of square = a: a/2 that means the side of triangle is doubled the side of square

answer
a) 2:1

6 0

3 years ago

Because of staffing decisions, managers of the Gibson-Marion Hotel are interested in the variability in the number of rooms occu

olchik [2.2K]

Answer:

a) $s^2 =30^2 =900$

b) $\frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}$

$567.28 \leq \sigma^2 \leq 1690.224$

c) $23.818 \leq \sigma \leq 41.112$

Step-by-step explanation:

Assuming the following question: Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 20 days of operation shows a sample mean of 290 rooms occupied per day and a sample standard deviation of 30 rooms

Part a

For this case the best point of estimate for the population variance would be:

$s^2 =30^2 =900$

Part b

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

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