Numerade

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7. Suggest a possible structure for unknown X, whose formula is $C_6H_{10}O$, given the following information. (4 points) a. It does react with excess $H_2/Pt$ to give $C_6H_{12}O$ b. It does give an orange precipitate upon treatment with 2,4-dinitrophenylhydrazine (2,4-DNP) c. It does give a silver mirror upon treatment with Tollen's reagent $[Ag(NH_3)_2]^+OH^-$. d. It does not give a positive iodoform test (excess NaOH, $I_2$). Summary Formula for unknown: $C_6H_{10}O$ $H_2/Pt$-yes, to $C_6H_{12}O$ DNP-yes Tollens- yes lodoform- no

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Which neurological disorder is a risk for athletes who experienced repeated traumatic brain injuries? A. ischemic stroke B. Parkinson’s disease C. tardive dyskinesia D. Tourette’s syndrome

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A copy machine in the mathematics departement is being insured against early failure. The time from purchase until failure is exponentially distributed with mean 8 years. The insurance company will pay an amount a if the copier fails during the first year, it will pay and amount 0.5a if it fails in the second year, and it will pay 0.25a if it fails in the third year. At what level must a be set if the expected value of the payments made under this insurance is to be 1000? The answer is 5202

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1. Find the SVD of the following symmetric matrices by hand calculation, and describe geometrically the action of the matrix on the unit circle: $\begin{bmatrix} -3 & 0 \\ 0 & 2 \end{bmatrix}$ a. $\begin{bmatrix} 0 & 0 \\ 0 & 3 \end{bmatrix}$ b. $\begin{bmatrix} \frac{3}{2} & -\frac{1}{2} \\ -\frac{1}{2} & \frac{3}{2} \end{bmatrix}$ c. $\begin{bmatrix} \frac{1}{2} & -\frac{3}{2} \\ -\frac{3}{2} & \frac{1}{2} \end{bmatrix}$ d.

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Let h(x)=7-4x^(3), h^(')(1)= Use this to find the equation of the tangent line to the curve y=7-4x^(3) at the point (1,3) and write your answer in the form: y=mx+b, where m is the slope and b is the y-intercept. Let h()=7 -4x3 h'(1)= Use this to find the equation of the tangent line to the curve y = 7 - 43 at the point (1,3) and write your answer in the form: y=m+b, where m is the slope and b is the y-intercept.

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1. Why was tympanoplasty performed? 2. Was there an active infection? 3. What type of incision was made? 4. What type of suture did the surgeon use to close the mastoid fascia? 5. What item was used to support the graft in the ear canal?

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Find the standard equation of the ellipse with foci (5,16) and (5,0) and a minor axis of length 12.

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(i) 3. Two similar right triangles are shown below. What is the value of x ?

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There is a binary search tree where the left sub-tree contains 1000 nodes, and the right sub-tree contains 100 nodes. For preorder, inorder, and postorder traversals how many nodes are processed before the root node? Pre: In: Post:

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$\vec{I}_s$ 2 $+$ j6 ? $\vec{V}_s$ Load: 800 kVA @ 0.9 pf lagging 7200$\angle$0° V Figure - 1

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rebecca h.