![EBK PRECALCULUS: MATHEMATICS FOR CALCUL](https://www.bartleby.com/isbn_cover_images/9781133715047/9781133715047_largeCoverImage.gif)
Concept explainers
Area of a Box An open box with a square base is to have a volume of 12 ft3.
- (a) Find a function that models the surface area of the box.
- (b) Find the box dimensions that minimize the amount of material used.
(a)
![Check Mark](/static/check-mark.png)
To find: The function that models the surface area of a open box with square base whose volume is
Answer to Problem 27P
The function that models the surface area of given box is
Explanation of Solution
Let the dimension of square base be x and height h
Surface area
Volume of the box is,
Substitute 12 for
Divide both sides of above equation by
Summarize all the information as shown in the table below.
In Words | In Algebra |
Surface Area |
|
Length of side of square base. |
|
Height of the box |
|
Use the information in the table and model the function.
Thus, the function that models the surface area of given box is
(b)
![Check Mark](/static/check-mark.png)
To find: The dimensions of the box which minimize the material used to make the box.
Answer to Problem 27P
The length of square base of box is approximately
Explanation of Solution
The function as calculated in part (a) is,
Sketch the graph of above function as shown below.
Figure (1)
Observe from the graph shown in Figure (1) that it attains minimum value at
Length of square base is
Height of box as calculated in terms of length of base in part (a) is,
Substitute
Thus, the length of square base of box is approximately
Chapter 2 Solutions
EBK PRECALCULUS: MATHEMATICS FOR CALCUL
- Good Day, Kindly assist me with the following query. Any assistance would be appreciated.arrow_forwardCan u give rough map of any room u can choose cm on toparrow_forward3. We'd like to know the first time when the population reaches 7000 people. First, graph the function from part (a) on your calculator or Desmos. In the same window, graph the line y = 7000. Notice that you will need to adjust your window so that you can see values as big as 7000! Investigate the intersection of the two graphs. (This video shows you how to find the intersection on your calculator, or in Desmos just hover the cursor over the point.) At what value t> 0 does the line intersect with your exponential function? Round your answer to two decimal places. (You don't need to show work for this part.) (2 points)arrow_forward
- Suppose the planet of Tattooine currently has a population of 6500 people and an annual growth rate of 0.35%. Use this information for all the problems below. 1. Find an exponential function f(t) that gives the population of Tattooine t years from now. (3 points)arrow_forwardA house was valued at $95,000 in the year 1988. The value appreciated to $170,000 by the year 2007. A) If the value is growing exponentially, what was the annual growth rate between 1988 and 2007? Round the growth rate to 4 decimal places. r = B) What is the correct answer to part A written in percentage form? r = 3 %.arrow_forwardB G R + K Match each equation with a graph above - 3(0.9)* 1 a. green (G) 3(1.5)* b. black (K) 3(0.73)* c. blue (B) d. red (R) I ✪ 4(1.21)* - 3(1.21)* e. orange (O)arrow_forward
- Suppose the planet of Tattooine currently has a population of 6500 people and an annual growth rate of 0.35%. Use this information for all the problems below.arrow_forwardTwo cables tied together at C are loaded as shown. Given: Q = 130 lb. 8 30° C B Q 3 4 Draw the free-body diagram needed to determine the range of values of P for which both cables remain taut.arrow_forwardCable AB is 103 ft long and the tension in the cable is 3900 lb. 56 ft A 50° 20° B x C Identify the angles 0.0, and 8, that define the direction of force. 1 By N 2 Match each of the options above to the items below. 142.1° 57.1° 73.3° 3 8.arrow_forward
- In the given figure, P = 51 lb . 65° C 25° 35° 75 lb P Determine the corresponding magnitude of the resultant. The corresponding magnitude of the resultant is| lb.arrow_forwardCable AB is 103 ft long and the tension in the cable is 3900 lb. 56 ft D y A B 20° 50° x C Identify the x, y, and z components of the force exerted by the cable on the anchor B. 1 F. FI 3 Fy 2 Match each of the options above to the items below. 2,120 lb 1,120 lb -3,076 lbarrow_forwardIn the given figure, P = 51 lb. 65° 25° 35° 75 lb P B Determine the required tension in cable AC, knowing that the resultant of the three forces exerted at point C of boom BC must be directed along BC. The required tension in cable AC is lb.arrow_forward
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781285741550/9781285741550_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134438986/9780134438986_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134763644/9780134763644_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781319050740/9781319050740_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780135189405/9780135189405_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337552516/9781337552516_smallCoverImage.gif)