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1). a). Solve. 5 = 35 b). Find the x-intercepts of f(x) = 5 - 35 a). What are the solutions? x=____-7,7_________________? (Type an exact answer using radicals as needed. Rationalize all denominators, Express complex numbers in terms of i. Use a comma to separate answers as needed.) b) (-7,0),(7,0) 2). Give exact and approximate solutions to three decimal places. = 49 What are the exact solutions? x=_____2,16________________? (Type an exact answer using radicals as needed. Rationalize all denominators, Express complex numbers in terms of i. Use a comma to separate answers as needed.) 3). Give exact and approximate solutions to three decimal places. What are the exact solutions? y=___7,11__________?(Type an exact answer using radicals as needed. Rationalize all denominators, Express complex numbers in terms of i. Use a comma to separate answers as needed.) 4). Solve by completing the square. x= 11+131,11-131 ___________? (Use a coma to separate answers as needed. Type exact answers, using radicals as needed.) Or, there is no solution. 5). Solve by completing the square. + 8x – 9 = 0 The solution is x=__1,-9________? (Use a comma to separate answers as needed.) Or there is not solution. 6). a). Solve. b). Find the x-intercepts of f(x) = a). What are the solutions? x= ___________? (Type an exact answer using radicals as needed. Rationalize all denominators, Express complex numbers in terms of i. Use a comma to separate answers as needed.) b) 7). Solve for x. x= -5+21, -5-21 _________? (Simplify your answer. Use a comma to separate answers as needed. Type exact answers, using radicals as needed.) Or, there is no solution. 8). a). Solve. b). Find the x-intercepts of f(x) = . a). What are the solutions? x= ________________? (Simplify your answer. Type an exact answer using radicals as needed. Rationalize all denominators, Express complex numbers in terms of i. Use a comma to separate answers as needed.) b) 9). Solve for x. 12(x – 4) – (x + 2) = (x + 2)(x – 4) The solution(s) is/are x= 6,7____________? (Use a coma to separate answers as needed.) Or, there is no solution. 10). The flower garden has the shape of a right triangle. 15 ft of a perennial border forms the hypotenuse of the triangle, and one leg is 3 ft longer than the other leg. Find the length of the legs. What are the lengths of the legs? 9,12_________ft (Use a comma to separate answers as needed.) 11). Solve for the indicated letter. R= , for C. Choose the correct expression for C. below. a). b). c). d). ^2 12). Determine the nature of the solutions of the equation. What does the solution have? a). two real solutions b). one real solution. c). two non-real solutions 13). Determine the nature of the solutions of the equation. 9 The equation has a). two non-real solutions. b). one real solutions. c). two real solutions. 14). Write a quadratic equation having the given numbers as solutions. – 4 and – 2 The quadratic equation is x2+6x+8 _______= 0. (Type your answer in standard form. Type an expression using x as a variable.) 15). Write a quadratic equation in the variable x having the given numbers as a solution. Type the equation in standard form, a + bx + c = 0. Solution: 10, only solution. The equation is x2-20x+100_______= 0. 16). Solve. What is the solution? w = , ____________? (Type an exact answer, using radicals as needed. Use commas to separate answers as needed.) Note: If you have to put complex answers too the answer is: = , , , 17). Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, a + bx + c = 0. The equation is = 0. (Type an expression using x as the variable. Type an exact answer, using radicals as needed.) 18). Solve the formula for the given letter. Assume all variables represent nonnegative numbers. , for a. Choose the correct value for a. a). b). c). d). Not given 19). During the first part of a trip, a canoeist travels 83 miles at a certain speed. The canoeist travels 10 miles on the second part of the trip at a speed 5 mph slower. The total tie for the trip is 5 hrs. What was the speed on each part of the trip? The speed on the first part of the trip was__19.30___mph. The speed on the second part of the trip was____14.30__mph. (Simplify your answer. Type an integer or a decimal. Round to the nearest hundredth.) 20). Solve. = - 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. x =___________? Or, there is no solution. 21). Solve. = x + 5 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The solution is x =___5______. (Use a comma to separate answers as needed.) Or, the solution is not a real number. 22). Give exact and approximate solutions to three decimal places. The exact solutions are_ ________. (Use radicals as needed. Use a comma to separate answers.) Approximated to three decimal places_____1.193, -4.193_________? 23). Solve for x. The solution(s) is/are x =___3,-2________. (Use a comma to separate answers as needed.) Or, there is no solution. 24). Solve for r. r =_ ______? (Use a comma to separate answers as needed. Type an exact answer, using radicals as needed.) Or, there is no solution. 25). If a pro basketball player has a vertical leap of about 30 inches, what is his hang time? Use the hang-time function V = 48 . His hang time is___0.8______seconds. (Simplify your answer. Type an integer or a decimal. Round to the nearest tenth.) 26). Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, a + bx + c = 0. Solution: 2, only solution; The equation is x2-4x+4________= 0.

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posted: | 8/17/2012 |

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