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Heat transfer. In a study of heat transfer in a grid of wires, the at an exterior node is maintained at a constant value (in °F) as shown in the accompanying figure. When the grid is in thermal equilibrium, the temperature at an interior node is the average of the temperatures at the four adjacent nodes. For instance.
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College Algebra
- The population P (in millions) of Texas from 2001 through 2014 can be approximated by the model P=20.913e0.0184t, where t represents the year, with t=1 corresponding to 2001. According to this model, when will the population reach 32 million?arrow_forwardPharmacology The percent p of prescriptions filled with generic drugs at CVS Pharmacies from 2008 through 2014 (see figure) can be approximated by the model pt=2.77t+45.2,8t111.95t+55.9,12t14 where t represents the year, with t=8 corresponding to 2008. Use this model to find the percent of prescriptions filled with generic drugs in each year from 2008 through 2014.arrow_forwardd-farrow_forward
- 2.1.1 How does it grow? Seeing Growth in Linear Representations Date: Per. Name: 2-5. Now consider Tile Pattern D, shown: H Figure 1 Figure 2 Figure 3 a. Draw Figures 0 and 4 for this pattern. b. Write an equation for the number of tiles in this pattern. Use color to show where the numbers in your equation appear in the tile pattern. Use x for the figure number, and y for the number of tiles in the figure. C. c. Make a table for the equation you wrote in part (b). Does the information in your table match the diagrams from part (a)? d. Graph It & State Domain & Range for the situation:arrow_forwardThe table contains the state population and the number of licensed drivers in the state (both in millions) for the states with population under 1 million in 2014. The regression model for this data is y=0.64x+0.01 where x is the state population (in millions) and v is the number of 0.7 1.4 State pop. (millions. State ABCDEFG T Licensed Drivers in 2014 Population 0.75 0.93 0.96 0.75 0.86 0.62 0.59 0.7 14 € 0 State pop. (millions. Licensed Drivers 0.49 0.61 0.63 6 0.7 14 State pop. (millions, The estimated number of licensed drivers in state H in 2014 is (Type a whole number. Round to the nearest thousand as needed.) 0.49 0.55 0.41 0.39 (B) If the population of state H in 2014 was about 1.6 million, use the model to estimate the number of licensed drivers in state H in 2014. 0 0.7 State pop. (millions, The estimated population of state J in 2014 is (Type a whole number. Round to the nearest thousand as needed.) (C) If the number of licensed drivers in state J in 2014 was about 1,019,000,…arrow_forwardLet x = day of observation and y = number of locusts per square meter during a locust infestation in a region of North Africa. I need help with (c) and (d)arrow_forward
- Part A: You are calibrating a temperature sensor that you believe will have a linear input/output relationship. You collect the three data points below: Temperature (C) 0 50 100 Output Voltage (V) 1.2 1.9 3.2 You wish to find output Voltage as a function of input Temperature (i.e., the calibration curve), and assume a linear relationship of the form: V = a₁T + ao Using the method and equations we discussed in class, find the coefficients a, and a for the best fit regression line.arrow_forwardlecture(12.11): Researchers were interested in the effects of co-sleeping on nightime waking and crying in infants. .They assesed the number of minutes parents reported that their infants were awake and crying for a period of three days. Five of the infants co-slept with thier mothers(Co) and four infants slept in crib(Cr).The researchers wanted to see if there was a difference in the total number of minutes of crying during the 3 nights. for the two groups. A summary of the data is given below Co-sleepers night time crying in minutes: 8, 4, 7, 7, 6 Crib-sleepers night time crying in minutes: 30, 17, 22, 25 Test the hypotheses at (aplha=.05) level of signifcance. using the 5 step hypotheses testing procedure. Clealy state the null and alternative hypotheses. Round your answer to 2 decimal places.arrow_forwardThe cost of a certain unlimited texting plan from a mobile phone company includes an initiation fee of $40 plus $15 per month. Ify represents the total cost of the plan and x represents the number of months, which equation models this relationship? O y = 55x O y = 15 + 40x O y = 40 + 15x O y = x(40 +15) INTL 9 10:27arrow_forward
- 5. At 60°F a particular blend of automotive gasoline weights 6.17 lb/gal. The weight y of gasoline on a tank truck that is loaded with x gallons of gasoline is given by the linear equation Y = 6.17x a. Explain whether the relationship between the weight y and the amount x of gasoline has an element of randomness. b. Predict the weight of gasoline on a tank truck that has just been loaded with 6,750 gallons of gasoline.arrow_forwardA hurricane is a tropical cyclone with winds that have reached a constant speed of 74 miles per hour or more. During one year, there were 10 Atlantic basin hurricanes. Their maximum wind speeds, in miles per hour (mph), were as shown in the following table. 1 85 100 110 80 105 80 115 90 90 115 Consider these storms a population of interest. Obtain the following parameters for the maximum wind speeds. Use the appropriate mathematical notation for the parameters to express your answers. a. Mean b. Variance c.Standard deviation d. Median e. Mode f. IQRarrow_forwardOn the Fahrenheit temperature scale, water freezes at 32° and boils at 212°. On the Celsius (centigrade) scale, water freezes at 0° and boils at 100°. (a) Use the two (Celsius, Fahrenheit) data points (0, 32) and (100, 212) to find the linear relationship y = mx + b between x = Celsius temperature and y = Fahrenheit temperature. (b) Find the Fahrenheit temperature that corresponds to 30° Celsius. OFarrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill