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MATH SOLVE
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Let A and B be n x n matrices.The determinant of A is the product of the diagonal entries in A. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A.The statement is true because the determinant of any triangular matrix A is the product of the entries on the main diagonal of A.B.The statement is false because the determinant of the 2×2 matrix A = __ is not equal to the product of the entries on the main diagonal of A.(Type an integer or simplified fraction for each matrixelement.)C.The statement is true because the determinant of any square matrix A is the product of the entries on the main diagonal of A.
General
4 months ago
A student club holds a meeting. The predicate M(x) denotes whether person x came to the meeting on time. The predicate O(x) refers to whether person x is an officer of the club. The predicate D(x) indicates whether person x has paid his or her club dues. The domain is the set of all members of the club. Give a logical expression that is equivalent to each English statement below.(a) Someone is not an officer.b) All the officers came on time to the meeting.(c) Everyone was on time for the meeting.(d) Everyone paid their dues or came on time to the meeting.(e) At least one person paid their dues and came on time to the meeting.(f) There is an officer who did not come on time for the meeting.
General
4 months ago
Rob owns 1/8 of the stock in a local bread company. His sister Talia owns half as much stock as Rob. What part of the stock is owned by neither Rob nor Talia?Please show work so I can use it as a visual for my next question on homework please!
General
4 months ago
If on a scale drawing 75 feet are represented by 45 inches, then a scale of 1/5 inch represents how many feet?
General
4 months ago
A manufacturer must decide whether to build a small or a large plant at a new location. Demand at the location can be either low or high, with probabilities estimated to be 0.4 and 0.6, respectively. If a small plant is built, and demand is high, the production manager may choose to maintain the current size or to expand. The net present value of profits is $223,000 if the firm chooses not to expand. However, if the firm chooses to expand, there is a 50% chance that the net present value of the returns will be 330,000 and a 50% chance the estimated net present value of profits will be $210,000. If a small facility is built and demand is low, there is no reason to expand and the net present value of the profits is $200,000. However, if a large facility is built and the demand turns out to be low, the choice is to do nothing with a net present value of $40,000 or to stimulate demand through local advertising. The response to advertising can be either modest with a probability of .3 or favorable with a probability of .7. If the response to advertising is modest, the net present value of the profits is $20,000. However, if the response to advertising is favorable, then the net present value of the profits is $220,000. Finally, if the large plant is built and the demand happens to be high, the net present value of the profits $800,000a) Draw a decision tree b) Determine the payoff for each decision and event node. Which alternative should the manufacturer choose?
General
4 months ago
Use the Midpoint Rule with the given value of n to approximate the integral. Round the answer to four decimal places. 64 0 sin( x ) dx, n = 4
General
4 months ago
A New York Times article titled For Runners, Soft Ground Can Be Hard on the Body considered two perspectives on whether runners should stick to hard surfaces or soft surfaces following an injury. One position supported running on soft surfaces to relieve joints that were in recovery from injury. The second position supported running on hard surfaces since soft surfaces can be uneven, which may make worse those injuries a soft surface was intended to help. Suppose we are given sufficient funds to run an experiment to study this topic. With no studies to support either position, which of the following hypotheses would be appropriate? A.The second position makes the more sense, so this should be a one-sided test. In this case, we should form the alternative hypothesis around the first position.B. The first position is more sensible, so this should postpone defining the hypotheses until after we collect data to guide the rest.C. Because there is uncertainty, we should postpone defining the hypotheses until after we collect data to guide the test.D. Because we would be interested in any difference between running on hard and soft surfaces, we should use a two-sided hypothesis test
General
4 months ago
a. Find the critical point of the given function and then determine whether it is a local maximum, local minimum, or saddle point.f(x, y) = x2 − y2 + 3xyb. Find the critical point of the given function and then determine whether it is a local maximum, local minimum, or saddle point.f(x, y) = x2 + y2 − xy
General
4 months ago
A new surgical procedure is said to be successful 60% of the time. Suppose the operation is performed nine times and the results are assumed to be independent of one another. What are the probabilities of these events? (Round your answers to three decimal places.)
General
4 months ago
A hotel chain wants to estimate the average number of rooms rented daily in each month. The population of rooms rented daily is assumed to be normally distributed for each month with a standard deviation of 24 rooms. During June, a sample of 16 days has a sample mean of 48 rooms. This information is used to calculated an interval estimate for the population mean to be from 40 to 56 rooms. What is the level of confidence of this interval?
General
4 months ago
An architect has a scale drawing of an addition that is to be added to a house with a scale of 1 inch : 2 feet. If the drawing is 6 inches by 10 inches, how big is the addition to the house going to be?
General
4 months ago
How many quarter inches long is 7 3/4
General
4 months ago
PLEASE HELP Describe the graph of y=1/2x-10 -3 compared to the graph of y=1/x
General
4 months ago
Use the parabola tool to graph the quadratic function f(x)=−5x2−2.Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.
General
4 months ago
What is -4 + 3/2= ?
General
4 months ago
Part 1.] In two or more complete sentences, describe the difference between an infinite series and a finite series.Part 2.] In two or more complete sentences, explain why the following sequence is an example of a finite series.2 + 4 + 8 + 16 + ... 256Part 3.] In two or more complete sentences describe why the following series is an example of an infinite series.1 + 2 + 3 + 4 + 5 + ...Part 4.] The first picturePart 5.] Express the series in summation notation.2 + 4 + 6 + 8 + 10 + 12Part 6.] Suppose you start an annuity where you invest $2,000 at the beginning of each year and 4% interest is paid at the end of the year. What is the value of the annuity at the end of 5 years, rounded to the nearest dollar? It is $____Part 7.] Find the sum picture
General
4 months ago
A triangle on a coordinate plane is translated according to the rule T–3, 5(x, y). Which is another way to write this rule?(x, y) → (x – 3, y + 5)(x, y) → (x – 3, y – 5)(x, y) → (x + 3, y – 5)(x, y) → (x + 3, y + 5)
General
4 months ago
(06.02)A six-sided number cube labeled 1 through 6 is rolled 500 times. An odd number is rolled 325 times. Compare the experimental probability of rolling an odd number with the theoretical probability of rolling an odd number and select one of the statements below that best describes the situation.The experimental probability and theoretical probability are the same.The experimental probability is larger than the theoretical probability.The experimental probability is smaller than the theoretical probability.There is not enough information to determine the relative frequency.
General
4 months ago
The formula for volume of this rectangular prism is:V = 2x 3 + 17x 2 + 46x + 40Find an expression for the missing side length. Show all of your work for full credit.
General
4 months ago
Which equations represent the line that is perpendicular to the line 5x − 2y = −6 and passes through the point (5, −4)? Check all that apply.y = –x – 22x + 5y = −102x − 5y = −10y + 4 = –(x – 5)y – 4 = (x + 5)
General
4 months ago
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