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What is the solution set of (x - 2)(x - 3) = 2? {1, 4} {2, 3} {4, 5}
Weegy: y= -3x/2 User: What is the value of b2 - 4ac for the following equation? 2x2 + 3x = -1 0 1 17 Weegy: The answer is: b.1 [smile] User: Write the quadratic equation in factored form. Be sure to write the entire equation. x2 + x - 12 = 0 Weegy: (x+4)(x-3)=0 User: Which of the following equations is the result of completing the square on x2 - 6x - 9 = 0? (x - 3)2 = 0 (x - 3)2 = 9 (x - 3)2 = 18 Weegy: (x-3)^2=18 User: What is the solution set of 2x(x - 1) = 3 Weegy: x = -14/11 User: An object is dropped off a building that is 144 feet tall. After how many seconds does the object hit the ground? (s = 16t2) 3 seconds 4 seconds 9 seconds Weegy: Thea answer is a.3 seconds User: The width and the length of a rectangle are consecutive even integers. If the width is decreased by 3 inches, then the area of the resulting rectangle is 24 square inches. What is the area of the original rectangle? 12 square inches 48 square inches 96 square inches Weegy: The width and the length of a rectangle are consecutive even integers. If the width is decreased by 3 inches, then the area of the resulting rectangle is 24 square inches. What is the area of the original rectangle? B. [ 48 square inches ] User: Which of the following constants can be added to x2 - 10x to form a perfect square trinomial? 10 25 100 Weegy: The answer is 1/4. Here, I'll show you how to get that answer: Trial and Error Method: 1) 1/4, [ 1/2 and 1 are the possible answers in the choices but we know that 1/2 is not a perfect square so it's not possible for 1/2 to be the answer. 2) Now try 1/4 and 1 and add them to the equation to get: x2 - x + 1/4 x2 - x + 1 3)Use the perfect square formula if you can: x2 - x + 1/4 becomes (x-1/2)2? Yes! x2 - x + 1 becomes (x-1)2 ...No! that's wrong because (a-b)2 = a2-2ab +b2 Thus, 1/4 is the answer. Easy Formula Method: 1) In a perfect square trinomial, c = (b/2a)2. a=1 because it's the co-efficient of x2 b=1 because it's the ... (More)
Question
Updated 7/2/2014 3:02:34 AM
(x - 2)(x - 3) = 2
x^2 - 3x - 2x + 6 = 2
x^2 - 5x + 4 = 0
(x - 1)(x - 4) = 0
x = 1 or x = 4
The solution set of (x - 2)(x - 3) = 2 is {1, 4}
Confirmed by jeifunk [7/2/2014 3:24:17 AM]
2x(x - 1) = 3
2x^2 - 2x - 3 = 0
a = 2, b = -2, c = -3
b^2 - 4ac = (-2)^2 - 4(2)(-3) = 4 + 24 = 28
x = (2 ± sqrt 28)/4
= (2 ± 2 sqrt 7)/4
= (1 ± sqrt 7)/2
Confirmed by jeifunk [7/2/2014 3:24:40 AM]
y(y + 4)(y - 6) = 0 is a quadratic equation. FALSE.
y(y + 4)(y - 6) = 0
y(y^2 - 2y - 24) = 0
y^3 - 2y^3 - 24y = 0 which is not a quadratic equation.
Confirmed by jeifunk [7/2/2014 3:24:48 AM]
The radius of the circle whose equation is x^2 + y^2 = 9 is 3.
Confirmed by jeifunk [7/2/2014 3:25:06 AM]
The x-coordinate of the vertex of the parabola whose equation is y = 3x^2 + 12x + 5 is x = -2.
Confirmed by jeifunk [7/2/2014 3:25:27 AM]
y(y + 4) - y = 6 is a quadratic equation. True False User: A circle has a diameter with endpoints of (-2, 8) and (6, 4). What is the center of the circle? (8, 12) (4, 12) (2, 6)
Weegy: Diameter=10.198 center=(2,6) User: Which of the following equations has only one solution? x 2 = 9 x(x - 1) = 9 x 2 - 6x + 9 = 0 Weegy: 6x - 5 = -17 solution is x = -2. Click on the "Good" button. Thank you. User: Which of the following equations is of a parabola with a vertex at (1, 2)? y = (x - 1) 2 - 2 y = (x - 1) 2 + 2 y = (x + 1) 2 - 2 y = (x + 1) 2 + 2 Weegy: A parabola whose equation is y = (x - 5)2 - 2 has a vertex at (5,-2). User: Which of the following constants can be added to x 2 - x to form a perfect square trinomial? 1/4 1/2 1 Weegy: The answer is 1/4. Here, I'll show you how to get that answer: Trial and Error Method: 1) 1/4, [ 1/2 and 1 are the possible answers in the choices but we know that 1/2 is not a perfect square so it's not possible for 1/2 to be the answer. 2) Now try 1/4 and 1 and add them to the equation to get: x2 - x + 1/4 x2 - x + 1 3)Use the perfect square formula if you can: x2 - x + 1/4 becomes (x-1/2)2? Yes! x2 - x + 1 becomes (x-1)2 ...No! that's wrong because (a-b)2 = a2-2ab +b2 Thus, 1/4 is the answer. Easy Formula Method: 1) In a perfect square trinomial, c = (b/2a)2. a=1 because it's the co-efficient of x2 b=1 because it's the coefficient of x c=? and it's the missing constant using the formula and the given, c = 1/4. That's it! :D Good Luck! ] User: Write the quadratic equation in general form. What is the value of b 2 - 4ac? 1 = 2x 2 + 7x 40 41 57 User: The graph of y = ax 2 + bx + c is a parabola that opens up and has a vertex at (-2, 5). What is the solution set of the related equation 0 = ax 2 + bx + c? {-2} {5} (More)
Question
Updated 7/2/2014 11:30:10 PM
y(y + 4) - y = 6 is a quadratic equation. True.
y(y + 4) - y = 6
y^2 + 4y - y = 6
y^2 + 3y - 6 = 0 which is a quadratic equation.
Confirmed by jeifunk [7/2/2014 11:26:49 PM]
The equation that has only one solution is x^2 - 6x + 9 = 0
Confirmed by jeifunk [7/2/2014 11:27:04 PM]
The equation of a parabola with a vertex at (1, 2) is: y = (x - 1)^2 + 2
Confirmed by jeifunk [7/2/2014 11:30:45 PM]
1 = 2x^2 + 7x
2x^2 + 7x - 1 = 0
a = 2, b = 7, c = -1
b^2 - 4ac = 7^2 - 4(2)(-1) = 49 + 8 = 57
Confirmed by jeifunk [7/2/2014 11:31:00 PM]
Twenty pounds of a salt-water solution contains fifteen percent salt. How much salt is in the water? 1.5 lb 2 lb 3 lb
Weegy: 15% of 20 is 3, so twenty pounds of a salt-water solution that contains fifteen percent salt contains 3 lb of salt. User: Twenty pounds of a salt-water solution contains fifteen percent salt. How much water must be added to weaken the solution to twelve percent salt? 3 lb 5 lb 12 lb Weegy: There is 3 lb of salt in the 20 lb of solution. If 3 lb is to be 12%, 100% is (3/12) x 100 = 25 lb in total. So 5 lb of water needs to be added. (More)
Question
Find the mean of the following data set. 42, 45, 58, 63 42 47 52
Weegy: the mean of the following data set. 42, 45, 58, 63 is (42 + 45 + 58 + 63)/4 = 52, thus the mean of the following data set. 42, 45, 58, 63 is c.)52 User: Find the mean of the following data set. 42, 45, 58, 63. 42 47 52 Weegy: the mean of the following data set. 42, 45, 58, 63 is (42 + 45 + 58 + 63)/4 = 52, thus the mean of the following data set. 42, 45, 58, 63 is c.)52 User: Based on the data set shown, which of the following is a true statement? -1, -1, 0, 1, 1, 1, 1, 2, 2, 2, 3. mean = mode mean Weegy: the answer is 1 (More)
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