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Question: In a US household, the voltage in volts in an electric outlet is given by
V = 156 sin(120Πt)
where t is in seconds. However, in a European house, the voltage is given (in the same units) by
V = 339 sin(100Πt)
Compare the voltages in the two regions, considering the maximum voltage and number of cycles (oscillations) per second.
what is the probability a sample mean is less than 30 if the sample size is 25 and the population mean is 24 and the population standard deviation is 3?
Determine where f is increasing and where f is decreasing. Find all local maxima and minima of f. Determine where f is concave up and where f is concave down
If A and B are 3 × 3 matrices with det(A) = 4 and det(B) = 1. What is the determinant of C = 2AT A-1BA
Describe the key skills you learned in this course. Explain how you expect to use those skills in your future academic, personal, and / or professional life.
In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference x¯1 - x¯2 if the
Jill's Company produces lawnmowers. It has fixed costs of $1000 per week and Variable costs of $70 per lawn mower.
How many one-to-one functions are there from a set with three elements to a set with two elements?
Betweenness in taxicab geometry. Let A = (0,0) B = (1,0) and C = (1,1) and let k denote the taxicab metric.
The function P(t) = 145e-0.092t models a runner's pulse, P(t), in beats per minute, t minutes after a race, where 0 ≤ t ≤15. Graph the function using a graphing utility. TRACE along the graph and determine after how many minutes the runner's puls..
Let F be a field, let R be a ring with more than one element, and let phi:F->R be a surjective homomorphism.
Calculate and compare the labor, raw material and supplies and total productivity for 2004 and 2005. What conclusion might your calcualtions lead you to believe about productivity compared between years 2004 and 2005?
How many different seven-digit phone numbers begin with 231- and contain no 9s?
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