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Which of the following equations has only one solution? x 2 = 9 x(x - 1) = 9 x 2 - 6x + 9 = 0
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Asked 5/16/2014 9:18:53 AM
Updated 5/16/2014 4:28:28 PM
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User: If (x + 1)(x - 3) = 5, then which of the following statements is true?

User: Which of the following equations has only one solution? x 2 = 9 x(x - 1) = 9 x 2 - 6x + 9 = 0

Weegy: 1/2x^2 - x + 5 = 0
Multiply 2 on both sides:
x^2 - 2x + 10 = 0, with coefficient a = 1, b = -2, c = 10
b^2 - 4ac = (-2)^2 - 4(1)(10) = 4 - 40 = - 36 < 0 (there are two complex solutions)
x = [2 +/- sqrt (-36)/]/2 = 1 +/- 3i
The two solutions are 1 + 3i, 1 - 3i



User: A circle has a diameter with endpoints of (-2, 8) and (6, 4). What is the center of the circle?

Weegy: The center of the circle is (2,6).
mystery2334|Points 91|

User: Find the distance between the points (3, 8) and (-1, 9).

User: Which of the following equations is of a parabola with a vertex at (1, 2)?

Question
Asked 5/16/2014 9:18:53 AM
Updated 5/16/2014 4:28:28 PM
2 Answers/Comments
This conversation has been flagged as incorrect.
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3
The following equation with only one solution is: x^2 - 6x + 9 = 0.
x^2 - 6x + 9 = 0.
(x - 3)^2 = 0
x = 3
Added 5/16/2014 4:26:09 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [5/17/2014 12:35:59 AM]
3
The distance between the points (3, 8) and (-1, 9) is sqrt(17).
Added 5/16/2014 4:28:28 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [5/17/2014 12:36:01 AM]
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