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According to Chebychev's theorem, what percentage of a distribution will be within k = 4 standard deviations of the mean? (Give your answer correct to one decimal place.)

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What types of fees may be incurred for prepaid cards? Question 14 options: 1) Penalty interest rate if payment is late. 2) Overdrafts. 3) Load and reload of funds. 4) All of the choices are correct.

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Example 9. Prove that $ \frac{\tan \mathrm{A}}{1-\cot \mathrm{A}}+\frac{\cot \mathrm{A}}{1-\tan \mathrm{A}}=1+\operatorname{cosec} \mathrm{A} \sec \mathrm{A} $. solution: \[ \begin{aligned} \text { LHS } & =\frac{\frac{\sin A}{\cos A}}{1-\frac{\cos A}{\sin A}}+\frac{\frac{\cos A}{\sin A}}{1-\frac{\sin A}{\cos A}}=\frac{\sin A}{\cos A \frac{(\sin A-\cos A)}{\sin A}}+\frac{\cos A}{\sin A \frac{(\cos A-\sin A)}{\cos A}} \\ & =\frac{\sin ^{2} A}{\cos A(\sin A-\cos A)}+\frac{\cos ^{2} A}{\sin A\left(\cos ^{2}-\sin A\right)} \\ & =\frac{\sin ^{2} A}{\cos A(\sin A-\cos A)}-\frac{\cos ^{2} A}{\sin A(\sin A-\cos A)} \end{aligned} \] [Observe that the $ +\operatorname{sign} $ between fractions has become $ -\operatorname{sign} $ because $ (\cos A-\sin A)=-(\sin A-\cos A)] $ \[ \begin{array}{l} =\frac{\sin ^{3} A-\cos ^{3} A}{\cos A \sin A(\sin A-\cos A)} \\ =\frac{(\sin A-\cos A)\left(\sin ^{2} A+\cos ^{2} A+\sin A \cos A\right)}{\cos A \sin A(\sin A-\cos A)}\left[U \operatorname{sing} a^{3}-b^{3}=(a-b)\left(a^{2}+a b+b^{2}\right]\right. \\ =\frac{1+\sin A \cos A}{\cos A \sin A}=\frac{1}{\cos A \sin A}+\frac{\sin A \cos A}{\cos A \sin A}=\sec A \operatorname{cosec} A+1=R H S \end{array} \]

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The facet joints of the lumbar spine primarily run in which plane to allow good spinal flexion and extension? Frontal plane Sagittal plane Transverse plane A and C

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Because of diminishing returns to physical capital, doubling the amount of physical capital available to one worker will ___ GDP per worker by ___ a factor of 2. decrease; less than increase; less than increase; exactly increase; more than

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Which of the following schools of thought promotes the idea that certain behaviors have developed and persisted in order to ensure survival of the species Group of answer choices Ethology Behaviorism Classical conditioning Nativism

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Table: Sales per employee for the apparel and textile industries in the United States and China, as well as bushels per worker in producing wheat United States China Sales/Employee Sales/Employee Apparel $56,000 $23,000 Textile $165,000 $27,000 Bushels/Worker Bushels/Worker Wheat 12,260 300 Comparative Advantage Wheat/Apparel Ratio 0.22 (=12260/56000) 0.01 (300/23000) Wheat/Textile Ratio 0.07 (=12260/165000) 0.01 (=300/27000) Source: Feenstra and Taylor (2015) The average sales per worker (labor productivity or how much sales an average worker in the U.S. produces) for U.S. apparel producers in 2010 is: 2.4 56,000 27,000 23,000

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PART I. Check Your Knowledge Activity 1: Examining the Functional Anatomy of the Heart 1. Identify the components of the heart. a. Right atrium b. Right ventricle c. Left atrium d. Left ventricle e. Aorta f. Pulmonary artery g. Pulmonary veins h. Superior vena cava i. Inferior vena cava j. Tricuspid valve k. Mitral valve l. m. Pulmonary valve n. Aortic valve

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The constant A in the equation Cy=ATÂ³ is equal to 12xR/5e3D, where R is the gas constant and Îµp is the Debye temperature (in K). Estimate Îµp for some hypothetical metal, given that its specific heat is 0.78 J/kg-K at 5 K. Assume that the atomic weight for this metal is 63.55 g/mol.

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Question 9. (4 marks) Answer the following questions. a) (2 marks) Identify and briefly explain three main threats to database security b) (2 marks) Identify and briefly explain three access control mechanisms in database management systems.

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meghan h.