Numerade

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Which of the following is a true statement? Select one: a. U.S. Congress manages money supply in the economy. b. If money supply increases in the economy, interest rate will fall. c. If money supply increases in the economy, interest rate will rise. d. The Federal Reserve changes government spending and taxes.

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The demand and supply functions for Penn State ice hockey jerseys are: p = d(x) =-x2 - 23x + 593p = s(x) =5x2 + x + 17 where x is the number of hundreds of jerseys and p is the price in dollars. (a) Find the equilibrium quantity.

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A lab instructor performs an experiment using an aluminum cup that contains 225 g of water and a 130 g copper stirrer, all initially at 27.0°C. (Note that the student wears insulated gloves when handling the stirrer.) The lab instructor then adds a sample of silver to the water. The sample has a mass of 488 g and is initially at a temperature of 85.0°C. After stirring the mixture until it reaches thermal equilibrium, the lab instructor measures a final temperature of 32.0°C. What is the mass (in g) of the aluminum cup? What is the initial temperature of the water, aluminum, and copper? Of the silver? What is the final temperature of all? Can you relate the specific heat, mass, and temperature change of each to the energy transferred from each? From conservation of energy, what should be the sum of all the energy transfers from each material? Using this, solve for the unknown mass. Be careful with signs and units. g

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An independent culinary critic built a webpage that publishes weekly reviews for many restaurants. Every time a client uses the critique webpage to access the webpage of any of the restaurants, he receives a 0.01 USD. What payment methods are best for the web page? a. Click through rate. b. Micropayments. c. Cost per click. d. Mini Payments.

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1. What is the maximum mass of copper (I) sulfide (Cu2S) that can be formed when 80.0 g of copper reacts with 25.0g of sulfur? What is the limiting reactant? Need to determine limiting reactant first – this reactant will be limit how much you can make. 2 Cu + S  Cu2S Step 1: Convert what you are given to moles. In this case you are given the amounts of both reactants. So you will need to convert both masses to moles by dividing by the molar mass of both the substances. 80. 0 grams Cu x = __________moles of Cu 25.0 grams S x = __________moles of S Step 2: Convert moles of what you are given( Cu and S) to moles of what you are looking for, Cu2S by multiply by the mole-to-mole ratio of Cu2S to Cu and to S. ______ moles of Cu x = _______ moles of Cu2S ______ moles of S x = _______ moles of Cu2S Which reactant above produced the smaller number of moles of Cu2S? This is your limiting reactant and the maximum amount of product you can make. Take this value to step 3 to convert moles to grams. Step 3: Convert moles of Cu2S to grams by multiplying by the molar mass of Cu2S. _________ moles of Cu2S x = ___________ grams Cu2S

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Physical Activtiy was presented in the text as having important tool value but little if any jewl value. True or false

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4. A random sample of cookies of a particular brand has an average sugar content of 16 grams and standard deviation of 2. How large a sample should be taken so that the sample average is within 0.5 grams of the true average with confidence level 94%?

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10.2-8 Using Eq. (10.18), find the DTFT of the signals depicted in Fig. P10.2-8.\\ 1\\ n\\ $-(N_0 - 1)$ $N_0 - 1$\\ (b)\\ $X(\Omega) = \sum_{n=-\infty}^{\infty} x[n]e^{-j\Omega n}$

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A B AB O 0.44 0.08 0.05 0.43 Assuming that the phenotypes of two randomly selected individuals are independent of one another, what is the probability that both phenotypes are O? (Enter your answer to four decimal places.) What is the probability that the phenotypes of two randomly selected individuals match? (Enter your answer to four decimal places.)

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Convert $-\frac{\pi}{8}$ from radians to decimal degrees. Round to 1 decimal place if necessary.

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lisa t.