Question and answer
Determine the solution set of (2x - 5)2 = 11.
Question
Asked 11/25/2014 11:37:07 AM
Updated 11/25/2014 10:15:35 PM
4 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [11/25/2014 10:12:15 PM]
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User: Determine the solution set of (2x - 5)2 = 11.

Weegy: 2x - 3 = 9

2x = 9 + 3

2x = 12

x = 12/2

x = 6


User: Determine the solution set of (3x + 1)2 - 100 = 0. {3, -3} {3, -11/3} {-11/3, -3}

Weegy: 2x^2 - 3x = 5

2x^2 - 3x - 5 = 0;

(x + 1)(2x - 5) = 0;

x + 1 = 0; x = -1;
2x - 5 = 0; 2x = 5; x = 5/2

x = {-1, 5/2)


User: Determine the solution set of (3x + 1)2 - 100 = 0. {3, -3} {3, -11/3} {-11/3, -3}

Weegy: Solve for x: 3x - 5 = 2x + 6 x : 11.
jeifunk|Points 37597|

User: Choose the equation that models the following problem. When the side of a square is doubled, its area is increased to 28 cm2. 2x = 28 2x 2 = 28 (2x)2 = 28 2x = x 2 + 28

Weegy: The sides of the square are both 8cm(its a square, and 8 squared is 64) So the diameter of the circle is 8cm, and the radius is 4. The area = pi(4^2) = 16pi.
Neckveu|Points 150|

User: The width of a rectangle is two-thirds of its length, and its area is 216 square meters. What is the length? 12 m 18 m 27 m

Weegy: L = L w = (2/3)L A = 216 L x w = A Substitute A and w, then solve for L L x (2/3)L = 216 (2/3)L^2=216 L^2=324 L=18, therefore w=(2/3)L=(2/3)18=12
immortal009|Points 71|

User: When the side of a square is decreased in length by 1 foot, its area is 8 ft2. The length of a side of the square is 1 + 2. True False

Question
Asked 11/25/2014 11:37:07 AM
Updated 11/25/2014 10:15:35 PM
4 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [11/25/2014 10:12:15 PM]
New answers
Rating
8
(2x - 5)^2 = 11
2x - 5 = ± sqrt 11
2x = 5 ± sqrt 11
x = (5 ± sqrt 11)/2
Added 11/25/2014 10:09:41 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:10:09 AM]
8
(3x + 1)^2 - 100 = 0
(3x + 1)^2 = 100
3x + 1 = 10 or 3x + 1 = -10
3x = 9 or 3x = -11
x = 3 or x = -11/3
The solution set for the equation (3x + 1)^2 - 100 = 0 is {3, -11/3}
Added 11/25/2014 10:10:52 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [11/25/2014 10:41:35 PM]
8
When the side of a square is doubled, its area is increased to 28 cm^2. The equation that models the problem is (2x)^2 = 28
Added 11/25/2014 10:11:41 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [11/25/2014 10:42:00 PM]
8
When the side of a square is decreased in length by 1 foot, its area is 8 ft2. The length of a side of the square is 1 + 2. FALSE.
(x - 1)^2 = 8
x - 1 = 2 sqrt 2
x = 1 + 2 sqrt 2
Added 11/25/2014 10:15:35 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:10:35 AM]
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Questions asked by the same visitor
2x^2 - 4x + 6 = 0 is in general form. True False
Question
Updated 11/26/2014 1:49:42 AM
1 Answer/Comment
2x^2 - 4x + 6 = 0 is in general form is true .
Added 11/26/2014 1:44:25 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:49:43 AM], Rated good by andrewpallarca
The graph of y = ax 2 + bx + c is shown below. Determine the solution set of 0 = ax 2 + bx + c.
Weegy: The graph of y = ax^2 + bx + c passes through the points (-2, 0), (0, -2), and (2, 0). The solution set of 0 = ax 2 + bx + c is {-2, 2} User: Give the values of a, b, and c needed to write the equation's general form. (5 + x)(5 - x) = 7 A = 1; B = 0; C = -18 A = 25; B = 0; C = -1 A = -1; B = 0; C = 25 Weegy: A = 25 User: Write the equation 0.3x 2 + 5x - 7 = 0 in general form and then choose the value of "b." 70 50 5 Weegy: multiply through by 10 getting: 3x2+50x?70=0 I believe that is the equation in general form, with "proper" coefficient for the x^2 term, if that is true then answer would be 50 User: Select all of the following that are quadratic equations. 3x 2 + 5x - 7 = 0 x3 - 2x2 + 1 = 0 2x - 1 = 0 5x 2+ 15x = 0 6x - 1 = 4x + 7 x 2 - 4x = 4x + 7 (More)
Question
Updated 11/26/2014 1:48:58 AM
2 Answers/Comments
(5 + x)(5 - x) = 7
25x + 5x - 5x - x^2 = 7
-x^2 + 25x - 7 = 0
x^2 - 25x + 7 = 0 is the general form and the value of a , b , c is a = 1 , b = - 25 , c = 7 .
Added 11/26/2014 1:47:16 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/26/2014 1:56:48 AM]
3x^2 + 5x - 7 = 0 , 5x^2+ 15x = 0 , x^2 - 4x = 4x + 7 are quadratic equations .

Added 11/26/2014 1:48:58 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/26/2014 1:57:49 AM]
Which of the following is the correct factored form of the given equation? x 2 - x = 6 (x + 3)(x + 2) = 0 (x + 3)(x - 2) = 0 (x - 3)(x + 2) = 0 (x - 3)(x - 2) = 0
Weegy: (x - 3)^2 = 0 written in general form is: x^2 - 6x + 9 = 0 Expand (x - 3)^2 = x^2 - 3x - 3x + 9 = x^2 - 6x + 9 User: What is the solution set of the following equation? 3x 2 - 6x = 0 {-2, 0} {0} {0, 2} User: Write the quadratic equation in factored form. Be sure to write the entire equation. x 2 - 5x - 24 = 0 User: Which of the following equations has only one solution? x 2 + 4x + 4 = 0 x 2 + x = 0 x 2 - 1 = 0 (More)
Question
Not Answered
Updated 11/25/2014 11:50:38 PM
3 Answers/Comments
(x - 3)(x + 2) = 0 is the correct factored form of the given equation of x^2 - x = 6 .
(x - 3)(x + 2) = 0
x^2 - 3x + 2x - 6 = 0
x^2 - x - 6 = 0
x^2 - x = 6 .
Added 11/25/2014 11:44:23 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:18:07 AM], Rated good by andrewpallarca
Write the quadratic equation of x^2 - 5x - 24 = 0 in factored form is (x - 8)(x + 3) = 0 .
x^2 - 5x - 24 = 0
x^2 - 8x + 3x - 8*3 = 0
(x - 8)(x + 3) = 0
Added 11/25/2014 11:47:28 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:19:19 AM], Rated good by andrewpallarca
The equation of x^2 + 4x + 4 = 0 has only one solution .
x^2 + 4x + 4 = 0
(x + 2)^2 = 0
x + 2 = 0
x = -2 .
Added 11/25/2014 11:49:09 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:20:23 AM], Rated good by andrewpallarca
Which of the following is the correct factored form of the given equation? x 2 + 3x - 4 = 0 (x - 1)(x + 4) = 0 (x - 1)(x - 4) = 0 (x + 1)(x - 4) = 0
Weegy: The correct factored form of the given equation x^2 + 3x - 4 = 0 is (x - 1)(x + 4) = 0. User: olve n3 + 2n2 - 15n = 0 by factoring. Weegy: n3 2n2 - 15n = 0 is n (2 n^4-15) = 0. User: What is the solution set of the following equation? 4x 2 - 25 = 0 {±} {±} {±5} User: What is the solution set of the following equation? x 2 = x - {-1, -4} {1, -4} {1, 4} User: What is the solution set of the following equation? (2x - 5)(3x + 1) = 0 {-5/2, 1/3} {-1/3, 5/2} {-3, 2/5} User: Write a quadratic equation in factored form to model the given problem. Be sure to write the entire equation. The height of a triangle is 4 more than the base, and the area of the triangle is 6 square units. Find the length of the base. Let x = the length of the base. (More)
Question
Not Answered
Updated 11/26/2014 12:14:03 AM
3 Answers/Comments
n^3 + 2n^2 - 15n = 0
n(n^2 + 2n - 15) = 0
n(n + 5)(n - 3) = 0
n = 0
when n + 5 = 0 , n = -5
when n - 3 = 0 , n = 3
So the solutions are n = 0 , n = -5 , or n = 3 .
Added 11/25/2014 11:56:18 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:13:13 AM], Rated good by andrewpallarca
x = 5/2 , or x = -5/2 are the solution set of the following equation of 4x^2 - 25 = 0 4x^2 - 25 = 0 ,
(2x - 5)(2x + 5) = 0,
when 2x - 5 = 0 , x = 5/2 ,
when 2x + 5 = 0 , x = -5/2 .
Added 11/26/2014 12:00:49 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:13:53 AM], Rated good by andrewpallarca
The height of a triangle is 4 more than the base, and the area of the triangle is 6 square units. The length of the base is 2. Let x = the length of the base , the height is 4 + x ,
Area = 1/2*x*(4 + x ) = 6 ,
1/2x(4 + x) = 6 ,
x(4 + x) = 12 ,
x^2 + 4x - 12 = 0 ,
(x + 6)(x - 2) = 0 ,
x = -6 , or x = 2 ,
x > 0 , so the length of the base is 2 , the height is 6 .

Added 11/26/2014 12:13:58 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/26/2014 1:14:38 AM], Rated good by andrewpallarca
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