OC userin Calculus·24 Feb 2019 C4 7.4.010 A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your answers to two decimal places.) (a) What is the half-life of the substance? yr (b) How long would it take the sample to decay to 30%of its original amount?
OC userin Calculus·22 Oct 2019 Consider the given function and the given interval. f(x) ( 7). 5. 8 (a) Find the average value fave of fon the given interval. fave- (b) Find c such that faveKc). (Enter solutions from smallest to largest. If there are any unused answer boxes, enter NONE in the last boxes.)
OC userin Calculus·18 Feb 2019 Show work please 3.) Figure I shows a graph of the function fx)x+6 a) Use a right hand Reimann sum to estimate the area under the graph of fx) over the closed interval [o,2] Use 4 divisions for your estimate. The graph of fx) is shown in Fig.I Fig.1 b) Is your answer in pt. a an overestimate or underestimate? c) Use the First Fundamental Theorem of Calculus to determine the area exactly
OC userin Calculus·24 Jun 2019 2. + -1 points MarsVectorCalc6 7.4.006 Find the area of the surface defined by z = xy and x2 + y2 2 Submit Answer Save ProgressPractice Another Veri
OC userin Calculus·22 Oct 2019 7. -1 points SCalcET8 5.4.023. Evaluate the integral. Talk to a 8. O-1 points SCalcET8 5.4.027 Evaluate the integral. (Se* + 4 sin(x))dx Need Help? ReadTaik to Tutor Talk toa Tutor 9. O -1 points SCalcET8 5.4.028 Evaluate the integral. dx Need Help? LResd Tak t Tater Talk to a Tutor
OC userin Calculus·28 Apr 2019 4.) Let F(x)-fi(x) dr , where f(x) = 12x-6M1)-3, and F(1) - 5, determine F(x). 5.) Find the following antiderivatives:
OC userin Calculus·19 May 2019 2. (25 points) Use Green's Theorem to evaluate V1+ dz+2zy dy, where O the trianele with vertices (0,0), (1,0), and(1,3).
OC userin Calculus·18 Sep 2019 Homework: Section 4.4 Homework Score: 0 of 1 pt Social Sci 4.4.77 Save 21 of21 (14 complete HW Score: 57.14% 12 of 21 pts Question Hep * One action that a govenment could take to reduce carbon emission into the atmosphere is to place a tax on fossil fuels. This tax would be based on the amount of carbon ou de that s erited into the ar when such a fuel is burned. The cost ben it o uation 1( 1-p--00031-0ã T ocnbes the approrime telato stip between a tax of T dollars per ton of carbon dioxide and the corresponding percent reduction P (in decimals) in erissions of carbon dioxoide (a) Determine the percent reduction in carbon dioxide when the tax is $40 (b) what tax will cause a 50% reduction in carbon dioxide emssons? (a) The percent reduction n carbon dioxide when the tax is S40 is % Type an integer or decimal rounded to the nearest tenth as needed)
OC userin Calculus·3 Mar 2019 A common inhabitant of human intestines is the bacterium Escherichia coli. A cell of this bacterium in a nutrient-broth medium divides into two cells every 20 minutes. The initial population of a culture is 59 cells. (a) Find the relative growth rate. (Assume t is measured in hours.) (b) Find an expression for the number of cells after t hours. P 59(8) (c) Find the number of cells after 8 hours. 989855744cells (d) Find the rate of growth after 8 hours. (Round your answer to three decimal places.) 2058347154x blion cells per hour (e) When will the population reach 20,000 cells? (Round your answer to two decimal places.) 2.80 ãhr
OC userin Calculus·25 Apr 2019 6.) Evaluate the following: (Show all work. Report all answers in exact terms)
OC userin Calculus·5 Oct 2019 the age of ancient objects by a method called dating. The of the upper atmosphere by cosmic rays converts nitrogen to a dioxide through the atmosphere axponentially and animal life assimilates 'c through food chains. When a plant or anirnal dies, it stops replacing its carton and the amount of l4c begins to decrease through radioactive decay. Therefore, the level of radioactivity must also decay
OC userin Calculus·13 Apr 2019 3. +-1 points MarsVectorCalc6 7.4.017 Find the area of the surface defined by x + y+ z = 1, x2 + 6y2 1.
OC userin Calculus·28 Aug 2019 11. O-1 points SCakET8 5.4.033. Evaluate the integral. 4 X 12. O -1 points SCacET8 5.4.037 Evaluate the integral cos2(0) Talk to a Need Help? 13. â1 points SCalcET8 5.4041 Evaluate the integral. V3/2 dr Need Help? Talk to s Tutor
OC userin Calculus·10 Mar 2019 3. (25 points) Use Creen's Theorem to evaluate f y ds + ay' dy, where C the circle +4 with counterclockwise orientation.
OC userin Calculus·13 Apr 2019 47.4.013 MI. t turkey is taken from an oven when its temperature has reached 185°F and is placed o n a table in a room where the temperature is 75°F. (Round your answer to the nearest whole num (a) If the temperature of the turkey is 150°F after half an hour, what is the temperature after 50 minutes? F (b) When will the turkey have cooled to 9592 min