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by: Tiffany Dees
Tiffany Dees

GPA 4.0

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About this Document

Chem notes
Chemical Science
Dr. Kurt Teets
Class Notes
25 ?




Popular in Chemical Science

Popular in Chemical Sciences

This 3 page Class Notes was uploaded by Tiffany Dees on Friday September 16, 2016. The Class Notes belongs to CHM-1020-002 - Chemical Science at Northwest Florida State College taught by Dr. Kurt Teets in Fall 2016. Since its upload, it has received 9 views. For similar materials see Chemical Science in Chemical Sciences at Northwest Florida State College.


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Date Created: 09/16/16
MAC 1105 - Assignment 1 Name___________________________________ Concepts covered: Quadratic equations, quadratic models Sections covered: 1.4, 1.5 The number in the brackets indicates the point value of the question. For questions 1-4, solve the quadratic equation by the method described. You must follow the method to recieve full points. 1)[7] 25x + 35x + 12 = 0 by factoring 2)[7] 2(x - 4) = -14 by the square root property 3)[7] x - 12x - 5 = 0 by completing the square 4)[7] 3x + 7x = -10 by the quadratic formula 1 For each part of question 5, determine the constant term that must be added to the expression to make it a perfect square. 5) a) [3] x + 16x b) [3] x + 2 x 3 For questions 6-9, solve each quadratc equations in the most efficient way, using one of the methods we discussed. 6)[7] 9x - 30x + 25 = 0 7) [7] 3x(x + 5) = 5 8)[7] (5x + 2) + 6 = 0 9)[7] x + x + 5 = 0 2 Solve the problem. 10) [10] Suppose that an open box is to be made from a square sheet of cardboard by cutting ou3t inch squares from each corner and then folding along the dotted lines. If the box is to have a volume of 75 cubic inches, find the original dimensions of the sheet of cardboard. 11) [10] The hypotenuse of a right triangle is7 feet long. One leg of the triangle is 3 feet longer then the other leg. Find the perimeter of the triangle. 12) [9] An accepted relationship between stopping distance, d (in feet), and the speed of a car, v (in mph), is 2 d = 1.1v + 0.06v on dry, level concrete. If an accident occurs 200 feet ahead of you, what is the maximum speed you can be traveling to avoid being involved? 13) [9] A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is 2 given by s(t) = -16t + 175t . At what time or times will the ball be 112 ft from the ground? Round your answer to the nearest tenth, if necessary. 3


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