Numerade

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How can you calculated Ka from pKa? How can you calculated Ka from pKa? Ka=10pka They mean the same thing Ka=10-pKa Ka=-log(pKa)

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List the vertex and axis of symmetry $f(x) = 2(x-4)^2 - 5$

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A particle moves along the $x$-axis so that at time $t > 0$ its position is given by $s(t) = \frac{1}{3}t^3 + 3t^2 - 8t + 5$. The graph of $s(t)$ is shown below. (a) Use the line tangent to the graph of the function $s(t)$ at the point $x = 1$ to approximate the value of $s(1.1)$. Is this approximation an over or underestimate of $s(1.1)$? (b) For how many values of $t$ is the particle at rest? (c) Over the interval $0 < t < 6$, for what values of $t$ is the speed of the particle decreasing?

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Consider the circuit, in which three resistors of resistances R, 2R, and R are connected to batteries of voltages V and 2V, as shown in the figure below. If R = 28\Omega and V = 17V, determine $I_1$. Express your answer in mA using one decimal place. Please note that depending on the direction of the current, your answer may be negative. If that is the case for you, please do not forget the minus sign!

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Label each chiral carbon in the compound below as R or S. OH CH$_3$

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QUESTION 21 You observe that the quantity of SUVs sold over the last 3 years has decreased and the price has increased. The best explanation for this is: The price of gasoline has risen and the fashionability of SUVs has not changed. Manufacturing costs have risen and the fashionability of SUVs has not changed. SUV manufacturing costs have decreased and the fashionability of SUVs has increased. Manufacturing costs have remained unchanged and the fashionability of SUVs has increased. 2.5 points Save Answer QUESTION 22 Suppose Timmy needs 8 hours to make a thumbtack, while Nancy needs 6 hours. Suppose Timmy needs 6 hours to make a needle, while Nancy Noodle needs 4 hours. We then know that: a. The price of a needle will be between 4 and 6 hours b. The price of a needle will be between $\frac{2}{3}$ and $\frac{3}{4}$ thumbtacks c. The price of a needle will be 1.5 needles d. The price of a needle will be between 1.5 and 1.33 thumbtacks 2.5 points Save Answer QUESTION 23 An opportunity cost is the: a. Value of the next best alternative b. Price paid for a good or service c. Lowest possible cost d. Income paid to a factor of production 2.5 points Saved

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Question 37 2.5 pts Sales price is $100 per unit. Unit variable cost is $40 per unit. Total fixed costs are $1,200. How many units do you need to sell to earn a target profit of $600? 15 units 30 units 20 units 18 units 45 units

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An individual buys $100,000 in financial assets and holds them for 2 years. The financial assets earn 12% interest each year. The tax rate is 25%. 29) Consider a tax system in which half of realized capital gains are taxed. What tax amount is due on these financial assets at the end of the 2 years? A) $3,000 B) $3,180 C) $6,000 D) $6,360 E) $3763.20 30) Consider a tax system in which half of realized and unrealized capital gains are taxed. What is the annual net (of taxes) rate of return on these assets? A) 1.5% B) 4.5% C) 10.5% D) 9% E) 12%

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Apply Thevenin's theorem to find $V_x$ in the circuit below. Indicate the Thevenin's equivalent values that are calculated. 4A 18? 12? 15V Use source transformation to obtain $i_x$ in the circuit below. 5? 0.4$i_x$ 10? 40V 40? 30? Use source transformation to calculate the power (P) absorbed by the 10? resistor. 10? 4? 4A 12? 6? 16V

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bonnie c.