I failed this test :( See if you can pass this test :-)?

  • Thread starter Thread starter devon c
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devon c

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1: If p = 3 + 4i and q = 9 - 2i, evaluate 5p - 4q
(A) 51 + 28i
(B) -21 + 28i
(C) -21 + 12i


2: Solve the following system of equations: 2x + 2y = 4 and 5y - 3x = 6
(A) 1/2, 3/2
(B) 2, 3
(C) 5/8, 1


3: i^35 =
(A) -i
(B) -1
(C) i


4: Which of the following is a solution for the quadratic 3x^2 - 14x + 8 = 0
(A) -2/3
(B) 4
(C) -4


5: Complete the square: 0 = - 5x^2 + 10x - 10
(A) (x - 1)^2 = -5
(B) (x - 1)^2 = 5
(C) (x - 1)^2 = - 1


6: The positive real number that results when multiplying this 6 + 2i by its conjugate will be
(A) 39
(B) 32
(C) 40


7: If the discriminant is positive-- if b^2 -4ac > 0 --then the quadratic equation
(A) has two solutions
(B) has one solution
(C) has no solutions


8: Solve the following system of equations y + 4x = 8 and 5x + 2y = 13
(A) 1, 4
(B) 3/2, 1/2
(C) -1/2, 4


9: Solve -x^2 + 6x -9 = 0
(A) no solution
(B) x = -3
(C) x = 3


10: When solving inequalities, you must flip the sign if
(A) you multiply or divide by a negative
(B) you add or subtract a negative
(C) there is no need to ever do this
 
Okay, I figured out all the answers, double-checked them and believe I passed. Whom do I see about having my test graded?
 
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