Numerade

Questions asked

BEST MATCH

A retail store is trying to determine if changing the prices for a certain wallet will provide an increase in profit. The weekly profit made by the store on the sale of wallets is given by the function $P(x) = -1.25x^2 + 105x - 875$, where $x$ is the price for each wallet. A) If the store is currently selling the wallet for $30 each, what will the average rate of change in the profit be if the store was to increase the price of the wallet to $32 each? Round your final to the nearest cent. B) If the store is currently selling the wallet for $40 each, what will the average rate of change in the profit be if the store was to increase the price of the wallet to $41 each? Round your answer to the nearest cent.

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Identify whether the words given below are more likely to be pronounced with an alveolar tap or a glottal stop. listen: glottal /ʔ/ tap /ɾ/

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Jose has to sign paperwork that would give 5 low income students a scholarship allowing them to go to college. He is running late and will need to go 5 miles over the speed limit to get there on time. Jose refuses to go above the speed limit because he would be breaking the law. He does not get there on time, therefore, none of the students get to go to college.

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What does the academic literature say about cognitive biases? What are they and why do we experience bias in the first place?

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Q1. A charge disk with radius a is sitting on the X-Y plane as shown. The\surface charge density $\rho_s = \frac{Q}{\pi a^2}$ (C/m$^2$).\a) Determine the potential $\phi$ at point P along the axis.\b) Electric field $\vec{E}$ at point P along the axis.\c) Determine the potential and Electric field when z >> a.

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24. (KA) If the market for cheese sandwiches is an oligopoly, which of the following would we expect to see? A) No economic profit in the long run B) Price lower than marginal cost C) No barriers to entry D) Consideration of rival firms’ strategies E) Allocative efficiency in the short run

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Question 47 Not yet answered Points out of 1 Flag question Phyllis a sensitive parent who consistently meets the needs of her infant daughter, Sara. According to Erikson, Sara at age 2 is likely to: Select one: a. be suspicious of others. b. be very demanding of her parents. c. have an attitude of trust toward others. d. avoid interactions with people other than her mother. Question 48 Not yet answered Points out of 1 Flag question Research shows that fighting between siblings: Select one a. increases as they enter the teen years. b. diminishes as children develop friendships and outside interests. c. teaches children bad habits in handling conflicts. d. All of the above.

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Problem 5 (25%) A DC series motor having a rating of 8 kW, 1100 rpm, 240 V, 50 A has the following losses: No Load: Mechanical Losses: 250 W Iron Losses: 300 W Full Load: Copper losses in armature 400 W Copper Losses in series field 100 W Calculate, and plot the efficiency (Vs Mechanical power) at 0% Load, 25% Load, 50% Load, 75% Load, 100% Load, 150% Load. Use the characteristic curves of problem 4. Problem 6 (15%) Thermistors are used to measure the hot spot winding temperature of a 1200 kW ac motor, insulated class F. If the motor runs at full load, what is the maximum temperature these detectors should indicate in ambient temperatures: 40 °C, 30°C, 14 °C?

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Question 4 Explain whether the following statements are true, false or uncertain. i. Since the correlation between two variables, Y and X, can range from -1 to +1, this also means that cov(,Y) also lies between these limits. ii. If the correlation between two variables is zero, it means that there is no relationship between the two variables whatsoever. iii. If you regress Y, on Y, (i.e., actual Y on estimated Y), the intercept and slope values will be 0 and 1, respectively

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4. Write a Function with the following definition: 1. It has 4 input parameters, Array A, Array B, r, and c. r is the # of rows and c is the # of columns for both arrays. 2. It has one output which is Array C 3. This function takes Array A adds it to Array B to produce Array C. C(i,j) = A(i,j) + B(i,j) element by element adds two arrays. The r and c values have no constraints and are not required to be equal. Again no built in Matlab functions are allowed. This requires element by element programming.

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sherry m.