Useful life. The total accumulated costs C(t) and revenues R(t) (in thousands of dollars), respectively, for a coal mine satisfy
where t is the number of years that the mine has been in operation. Find the useful life of the mine, to the nearest year. What is the total profit accumulated during the useful life of the mine?

Want to see the full answer?
Check out a sample textbook solution
Chapter 5 Solutions
EP CALCULUS FOR BUSINESS..-MYLAB ACCESS
- show workarrow_forward2011 listing by carmax of the ages and prices of various corollas in a ceratin regionarrow_forwardس 11/ أ . اذا كانت 1 + x) = 2 x 3 + 2 x 2 + x) هي متعددة حدود محسوبة باستخدام طريقة الفروقات المنتهية (finite differences) من جدول البيانات التالي للدالة (f(x . احسب قيمة . ( 2 درجة ) xi k=0 k=1 k=2 k=3 0 3 1 2 2 2 3 αarrow_forward
- 1. Differentiate between discrete and continuous random variables, providing examples for each type. 2. Consider a discrete random variable representing the number of patients visiting a clinic each day. The probabilities for the number of visits are as follows: 0 visits: P(0) = 0.2 1 visit: P(1) = 0.3 2 visits: P(2) = 0.5 Using this information, calculate the expected value (mean) of the number of patient visits per day. Show all your workings clearly. Rubric to follow Definition of Random variables ( clearly and accurately differentiate between discrete and continuous random variables with appropriate examples for each) Identification of discrete random variable (correctly identifies "number of patient visits" as a discrete random variable and explains reasoning clearly.) Calculation of probabilities (uses the probabilities correctly in the calculation, showing all steps clearly and logically) Expected value calculation (calculate the expected value (mean)…arrow_forwardt 56 65 33arrow_forwardCalculating probability for the Standard Normal Curve 1. Assume the mean is zero, the standard deviation is one, and it is associated with the distribution of z values. Each problem is worth 2 points, 1 point for drawing out the curve and shading the area requested and 1 point for the answer. a. What is the P(z > 0)? b. What is the P(z < 1.0)? C. What is the P(z <-1.0)?arrow_forward
- a) x(t) = rect(t − 3) b) x(t) = −3t rect(t) . c) x(t) = 2te 3u1(t) d) x(t) = e−2|t| 2. Sketch the magnitude and phase spectrum for the four signals in Problem (1).arrow_forwardG(x) = dt 1+√t (x > 0). Find G' (9)arrow_forwardWhat is the area of this figure? 7 mi 3 mi 8 mi 5 mi 2 mi 6 mi 3 mi 9 miarrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage LearningCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning
- Algebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellTrigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning




