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2 years ago

Take-away Frequency Angle

Mathematics

1 answer:

serg [7]2 years ago

3 0

Answer:

Step-by-step explanation:

The numbers add up to 40, and the circle has 360 degrees. 360 / 40 = 9, so each value of 1 will equal 9 degrees.

Pizza 3 * 9 = 27 degrees

Curry 11 * 9 = 99 degrees

F&C 9 * 9 = 81 degrees

Kebab 2 * 9 = 18 degrees

Other 15 * 9 = 135 degrees

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30 POINTS, WILL AWARD BRAINLIEST

fredd [130]

Answer:

Step-by-step explanation:

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4 years ago

Read 2 more answers

How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F

BARSIC [14]

Answer:

a) Sample Mean = 79.4

Sample standard deviation = 30.62

b) 90% Confidence interval: (67.56 ,91.24)

Step-by-step explanation:

We are given the following in the question:

Prices for sleeping bags has an approximately normal distribution.

We are given the following sample:

35, 85, 105, 40, 100, 50, 30, 23, 100, 110, 105, 95, 105, 60, 110, 120, 95, 90, 60, 70

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1588}{20} = 79.4$

Sum of squares of differences = 1971.36 + 31.36 + 655.36 + 1552.36 + 424.36 + 864.36 + 2440.36 + 3180.96 + 424.36 + 936.36 + 655.36 + 243.36 + 655.36 + 376.36 + 936.36 + 1648.36 + 243.36 + 112.36 + 376.36 + 88.36 = 17816.8

$S.D = \sqrt{\displaystyle\frac{17816.8}{19}} = 30.62$

b) 90% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.7291$

$79.4 \pm 1.73(\displaystyle\frac{ 30.62}{\sqrt{20}} ) = 79.4 \pm 11.84 = (67.56 ,91.24)$

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3 years ago

The Alan Company bought 80 tickets for a jazz company. After giving away 20 tickets to customers, the company sold the rest to t

aleksandrvk [35]

Each employ paid 166.67 for each ticket

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3 years ago

19 * 15 hello I need help on 19 * 15 + 5 + 6 + 7 - 8 - 5

ivanzaharov [21]

Answer:

290

Step-by-step explanation:

Using PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

(19*15)+5+6+7-8-5=

(285)+5+6+7-8-5=

290

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3 years ago

Write an absolute value equation that has the given solutions x = -10 and x = -5

katrin [286]

Hello :
<span>an absolute value equation is :
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3 years ago