Hey there!
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The answer to your question is 
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<u>Formulas:</u>
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<em>Area of semi-circle = </em>
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<em>Area of rectangle = </em>
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<em>Area of triangle = </em>
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<u>Now solve:</u>
<em>semi-circle</em>
<em>(We will use 3.14 as approx. for pi)</em>
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<em>rectangle</em>
<em>triangle</em>
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<em>Now add them all together:</em>
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Have a terrificly amazing day!
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Answer:
112 rooms
Step-by-step explanation:
Simply if 10% of 140 is 14 20% of 140 is 28. So then 28 substract 140 is 112
Answer:
Step-by-step explanation:
The given data is
42 40 39 31 22 18 15 12 11.7 10.5
Range = 42 - 10.5 = 31.5
Mean = (42 + 40 + 39 + 31 + 22 + 18 + 15 + 12 + 11.7 + 10.5)/10 = 24.12
n = 10
Variance = Summation(x - mean)²/n
Summation(x - mean)² = (42 - 24.12)^2 + (40 - 24.12)^2 + (39 - 24.12)^2 + (31 - 24.12)^2 + (22 - 24.12)^2 + (18 - 24.12)^2 + (15 - 24.12)^2 + (12 - 24.12)^2 + (11.7 - 24.12)^2 + (10.5 - 24.12)^2 = 1452.396
Variance = 1452.396/10 = 145.2396
Standard deviation = √(summation(x - mean)²/n
Standard deviation = √(145.2396
Standard deviation = 12.1
The standard deviation of the sample is not a good estimate of the variation of the salaries of the TV personalities in general because
B. No, because the sample is not representative of the whole population.
Answer:
12x-3y-5
Step-by-step explanation:
3y-6y=-3y
4-9=-5
Answer: -12.8x-20y+8.4
Step-by-step explanation: I multiplied the numbers in parentheses by 4.
