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MATH SOLVE
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Two is a zero of the equation x^3−x^2−14x+24=0.Which factored form is equivalent to the equation?A) (x+4)(x−2√)(x+2√)=0B) (x−2)(x+2)(x+4)=0C) (x−3)(x−2)(x+4)=0D) (x−3)(x+2)(x+4)=0 THE ANSWER IS C ) (x-3)(x-2)(x+4)=0trust me on this.
General
4 months ago
the sum of two integers is 8. their difference is 6. what are the two integers?
General
4 months ago
A randomly selected sample of n = 12 students at a university is asked, \How much did you spend for textbooks this semester?" The responses, in dollars, are 200, 175, 450, 300, 350, 250, 150, 200, 320, 370, 404, 250 (a). Construct an approximate 95% confidence interval for the population mean using the CLT. (b). If the data are assumed from N(µ; σ2), construct an exact 95% confidence interval for the population mean.
General
4 months ago
not? Is t(n)=2⋅3n a function? b. Is it possible for t(n) to equal 1400? If so, find the value of n that makes t(n) = 1400. If not, justify why not. c. Is it possible for f(x) to equal 1400? Be prepared to share your justification with the class. d. How are the functions similar? How are they different?
General
4 months ago
Which statement correctly compares the centers of the distributions?A. The mean of Southview HS is greater than the mean of NorthHeights HS.B. The range of North Heights HS is greater than the range ofSouthview HS.C. The median of Southview HS is greater than the median of NorthHeights HS.D. The mean of North Heights HS is greater than the mean ofSouthview HS.
General
4 months ago
Suppose you write a book. The printer charges $4 per book to print it, and you spend $3500 on advertising. You sell the book for $15 a copy. How many copies must you sell so that your income from sales is greater than your total cost?
General
4 months ago
At Sam’s Swimming Pool Cleaning, Sam charges each of his 85 customers $25 per week for 52 weeks of service every year. Since pool cleaning is a service, it has no cost other than labor and supplies, which cost Sam $48,000 each year. Calculate Sam’s annual gross profit. a) $2,125 b) $4,420 c) $62,500 d) $110,500
General
4 months ago
John is building his daughter a doll house that is a miniature model of their house. The front of their house has a circular window with a diameter of 5 feet. If the scale factor for the model house is 1/30, make a sketch of the circular doll house window.
General
4 months ago
Shorney Construction Company bids on projects assuming that the mean idle time per worker is 72 or fewer minutes per day. A sample of 30 construction workers will be used to test this assumption. Assume that the population standard deviation is 20 minutes. a. State the hypotheses to be tested. Anderson, David R.. Essentials of Statistics for Business and Economics (p. 435). South-Western College Pub. Kindle Edition.
General
4 months ago
Marcus receives an inheritance of 6,000 he decides to invest the money in a 14-year certificate of deposit that pays 6.5% interest compounded monthly. How much money will Marcus receive when he redeems the CD at the end of the 14 years?
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
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. 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 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
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 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
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
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
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
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
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