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What is the discriminant in the quadratic equation x2 + 11x + 121 = x + 96? A. 100 C. 20 B. 0 D. 200
x^2 + 11x + 121 = x + 96 x^2 + 10x + 25 = 0 a = 1, b = 10, c = 25 discriminant= b^2 - 4ac = 10^2 - 4(1)(25) = 100 -100 = 0
Question|Asked by masterquece
Asked 4/8/2014 6:31:50 AM
Updated 4/8/2014 7:40:11 AM
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x^2 + 11x + 121 = x + 96
x^2 + 10x + 25 = 0
a = 1, b = 10, c = 25
discriminant= b^2 - 4ac = 10^2 - 4(1)(25) = 100 -100 = 0
Added 4/8/2014 7:40:11 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/8/2014 7:43:20 AM]
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Questions asked by masterquece
To start a program from an icon, you should A. click the right mouse button. B. click both mouse buttons at once. C. double-click the left mouse button. D. click the left mouse button.
Weegy: To start a program from an icon, you should double-click the left mouse button . (More)
Question|Asked by masterquece
Expert Answered
Updated 4/7/2014 7:07:29 AM
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Which system tool allows you to manage the available space on your hard disk to improve efficiency? A. Disk Defragmenter B. ScanDisk C. DriveSpace D. Anti-Virus
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Question|Asked by masterquece
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Updated 4/7/2014 8:02:16 AM
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Disk Defragmenter allows you to manage the available space on your hard disk to improve efficiency.
Added 4/7/2014 8:02:16 AM
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A screen saver is best described as a(n) A. desktop background pattern or wallpaper. B. antistatic monitor dust cover. C. moving full-screen graphic. D. stationary display, such as a menu or desktop
Question|Asked by masterquece
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Updated 4/7/2014 7:12:35 AM
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A screen saver is best described as a moving full-screen graphic.
Added 4/7/2014 7:12:35 AM
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Find the value of x in the equation 2(x – 3) + 5x = 5(2x + 6). A. 12 C. 2 B. –12 D. –2
Weegy: xUser: Find the possible values for s in the inequality 12s – 20 50 – 3s – 25. A. s 3 C. s 5/9 B. s 9 D. s 1/3 (More)
Question|Asked by masterquece
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Updated 4/8/2014 6:54:09 AM
1 Answer/Comment
2(x – 3) + 5x = 5(2x + 6)
2x - 6 + 5x = 10x + 30
7x - 6 = 10x + 30
7x - 10x = 30 + 6
-3x = 36
x = -12
Added 4/8/2014 6:54:09 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/8/2014 7:06:32 AM]
Solve the system of equations 3r – 4s = 0 and 2r + 5s = 23. A. r = 12, s = 0 C. r = 4, s = 3 B. r = –12, s = 9 D. r = –1, s = –3
Question|Asked by masterquece
Not Answered
Updated 4/8/2014 8:04:28 AM
1 Answer/Comment
3r – 4s = 0, multiply 2 on both sides: 6r - 8s = 0 (equation 1)
2r + 5s = 23, multiply 3 on both sides: 6r + 15s = 69 (equation 2)
equation 2 - equation 1 we get: 23s = 69, s= 69/23 = 3
3r - 4(3) = 0, r = 12/3 = 4
The solution for the system of equations 3r – 4s = 0 and 2r + 5s = 23 is C. r = 4, s = 3
Added 4/8/2014 8:04:28 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/8/2014 8:05:49 AM]
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