Wednesday

April 16, 2014

April 16, 2014

Number of results: 78,288

**algebra**

Solve the following equation: k2 + 4k = 0 By factoring and By using the quadratic formula Can someone please help me to understand how to this problem...I do not understand the steps to get the correct answer. Thanks!!!
*Sunday, February 28, 2010 at 6:07pm by lena*

**math**

your equation leads to a quadratic equation. If you have not studied that topic, an explanation is beyond what I can do here in a simple post here is my result from a Google search http://www.google.ca/search?hl=en&q=the+quadratic+equation&btnG=Google+Search&meta=
*Tuesday, December 2, 2008 at 8:38pm by Reiny*

**Algebra 2**

For the period 1990-2002, the number s (in thousands)lf cellular telephone subscribers in the United States can be modified by S=858t^2 + 1412t + 4982 where t is the number of years since 1990. In what year did the number of subscribers reach 50 million? The choices are the ...
*Tuesday, September 24, 2013 at 9:26pm by Krystal*

**Polynomials and quadratic application**

Suppose I want a garden with 400 square feet. Write an equation that can be used to find the values for x that will result in that area.
*Saturday, April 28, 2012 at 1:05pm by Kendra*

**College Math II**

I would multiply all out, rearrange into a quadratic, then factor or use the quadratic equation.
*Saturday, November 21, 2009 at 11:50am by bobpursley*

**Factoring Trinomials**

I never heard of the criss cross method. I used the quadratic equation to solve for zeros of the quadratic expression.
*Monday, October 31, 2011 at 6:40pm by Damon*

**math**

about nine weeks is spent on this in Alg I. methods: factoring, quadratic equation, graphing. Google quadratic equations
*Saturday, October 6, 2012 at 3:06am by bobpursley*

**calculus**

2x^3 -3x +1 = 0 x = 1 is one solution. That is obvious by inspection. Therefore (x-1) is a factor of the equation. Divide the cubic by (x-1) to get the quadratic factor, (2x^2 +2x -1). That can be solved using the quadratic equation to get the other two roots x = (1/4)[-2 +/- ...
*Tuesday, November 18, 2008 at 5:39am by drwls*

**i need help..algebra/math**

solve by using the quadratic formula: x2 plus x minus 2 equal 0 I know the formula is a=1 b=1 c=2 I'm having trouble solving...please help.
*Friday, November 16, 2007 at 9:31pm by kate*

**ALGEBRA--MAT 117**

Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods? When might each method be most appropriate? Which method do you prefer? Why?
*Monday, January 12, 2009 at 11:00pm by Paradise*

**math 117**

Quadratic equations may be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods? When might each method be most appropriate? Which method do you prefer? Explain why.
*Monday, December 5, 2011 at 6:04am by Anonymous*

**algebra**

just solve it like any quadratic. When it hits the ground, h=0, so 4 + 60t - 16t^2 = 0 t=3.8 sec this doesn't factor easily, so the quadratic formula is probably best. However, while you're doing that, the kicker has probably scored a goal!
*Wednesday, May 22, 2013 at 5:12pm by Steve*

**Math**

excuse me? You're in calculus, and don't know what a parabola is? Regardless, just work with the math. y'(x) = 6x-5 y'(2) = 7 y(2) = 2 So, you want the equation of the line passing through (2,2) with slope 7: (y-2) = 7(x-2) Your answer is correct. Any quadratic equation ...
*Sunday, October 28, 2012 at 10:55am by Steve*

**Chemistry**

How do I write the formula for the following compounds? 1.beryllium oxide 2. sodium sulfate 3.aluminum arsenide I know how to write out the names but not the formula
*Tuesday, December 9, 2008 at 3:36pm by Alyssa*

**geometry**

- IT would be sumthing like that (x-3)^2 + (y+5)^2 = 9 - opening the brackets by (a + b)^2 { A^2 + 2(a)(b) + b^2 ) - (x^2 - 6x + 9)+(y^2 + 10y + 25)=9 - nOw apply quadratic formula - Put the value in the above equation and find the value of x and y
*Wednesday, September 3, 2008 at 1:31pm by alyshan*

**More trig**

Use the Quadratic Formula to solve the equation in the interval [0,2pi). Then use a graphing utility to approximate the angle x. (1) 5/(tanx+secx) (2) 4cos^2x-4cosx-1=0 Thank you.
*Monday, November 17, 2008 at 11:30pm by Poindexter*

**Math**

I am stumped could someone please explain this problem? Give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y=x^2+2x-15 Equation: x^2+2x-15=0 Thanks so much.
*Friday, September 18, 2009 at 6:55am by B.B.*

**math **

State the solutions, or estimated solutions, to each quadratic equation in Exercises 2326 by examining the graph of the related quadratic function equation 2x2 - 3x - 4 = 0 and Graph:y=2x^2-3x-4 Can someone help me with this
*Friday, April 23, 2010 at 9:19pm by Alex*

**calculus**

a. When x = sqrt ( 5 ) f ( x ) = 10 x ^ 2 / ( x ^ 4 + 25 ) = 10 * sqrt ( 5 ) ^ 2 / ( sqrt ( 5 ) ^ 4 + 25 ) = 10 * 5 / ( 25 + 25 ) = 50 / 50 = 1 yes b. When x = 3 f ( x ) = 10 x ^ 2 / ( x ^ 4 + 25 ) = 10 x ^ 2 / ( x ^ 4 + 25 ) = 10 * 3 ^ 2 ( 3 ^ 4 + 25 ) = 10 * 9 / ( 81 + 25...
*Sunday, December 16, 2012 at 9:48am by Bosnian*

**Math**

I am stumped on this problem could someone please help? Give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y=x^2+2x-15 Equation: x^2+2x-15=0 Thanks.
*Thursday, September 17, 2009 at 5:42pm by B.B.*

**algebra**

write a quadratic equation having the given numbers as solutions 6 - sqrt(2) , 6 + sqrt(2) thanks for any help
*Sunday, March 14, 2010 at 11:29am by Derotts3*

**trig**

How do you write the quadratic equation with integer coefficients that have the roots 7-3i and 7+3i?
*Tuesday, December 21, 2010 at 5:33pm by KELLY*

**chemistry**

No, it is (0.790-2x)^2/(0.080+x)(0.060+x) I didn't write the -2x in the chart but I should have done so. As to one of the numbers "going away" because it's so small, I don't know how you know that until you work the problem.And that means you solve this problem the hard way, ...
*Wednesday, December 15, 2010 at 9:40pm by DrBob222*

**Algebra 2**

Find all the values of j such that the quadratic equation 5x^2+x+4j=0 has no real solutions. Write your answer as an equality or inequality in terms of j.
*Sunday, August 16, 2009 at 7:51pm by Lexie*

**ALGEBRA**

factor it our use quadratic formula (i would do both so you get practicce in both sicne some polynomial are factorable so oyu will have to know how to use wuad formula) this isn't factorable so use quad formula which is -b + or - square root of (b^2 - 4AC) all of that will be ...
*Monday, April 30, 2012 at 10:12am by visoth*

**Algebra-Quadratic Applications**

There is a discrepancy in your problem. You state the platform is 40 feet high, yet the equation suggests an initial height of 50 feet. You would find the vertex of the downwards parabola. An easy way is to find the x of the vertex by -b/2a = -5/(-32) = 5/32 seconds Now sub ...
*Thursday, May 13, 2010 at 6:40pm by Reiny*

**Algebra 2 help!**

Use the quadratic formula to solve the equation. -x^2+5x=11 a.5/2 +- sqrt13/2 b.-5/2 +- sqrt13/2 c.2/5 +- sqrt13/2 d.-2/5 +- sqrt13/2
*Thursday, January 9, 2014 at 9:44pm by Maria *

**Algebra help please!**

Use the quadratic formula to solve the equation. -x^2+5x=3 a.5/2 +- sqrt13/2 b.-5/2 +- sqrt13/2 c.2/5 +- sqrt13/2 d.-2/5 +- sqrt13/2
*Thursday, January 9, 2014 at 10:03pm by Maria *

**Algebra**

How would I write a quadratic equation having the given numbers as solutions 4i, -4i
*Sunday, April 25, 2010 at 9:12am by dani*

**ALGEBRA**

What does it mean to give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y = x^2 + 2x - 15 Equation: x^2 + 2x - 15 = 0
*Wednesday, September 16, 2009 at 10:51pm by ggift*

**Algebra I**

What is the quadratic equation? In the standard form of the quadratic, ax2 + b x + c=0 a, b and c are constants. Then x is equal to (-b +- sqrt (b2 -4ac) )/2a huh?? You asked what the quadratic equation was, I gave it to you. You need to read your text on this if you are lost...
*Saturday, July 14, 2007 at 7:40pm by April*

**chemistry**

Aqueous solutions of iron (III) sulphate and barium hydroxide are combined. Does a precipitate form? If yes write a net ionic equation for the precipitation reaction. You first identify the formula of the aqueous compounds (note that iron is said to be iron(III)), and use it ...
*Sunday, November 13, 2011 at 8:16am by luke*

**Chopsticks**

solve the equation for x using the quadratic formula: 3x^2 + 8x + 1 = 0 Work: I tried factoring it, but I can't do it. (3x + ?)(x + ?) I'm thinking the ? = 1 but that won't work.
*Monday, August 31, 2009 at 10:55pm by math*

**geometry**

Rearrange equation into: 3x²-x + 6x-2 =x(3x-1) + 2(3x-1) =(x+2)(3x-1) or use the quadratic formula, or by completing squares.
*Saturday, August 28, 2010 at 9:58pm by MathMate*

**math/algebra**

to do this you can either just factor it out (if it is factorable) or use quadratic formula. since it's factorable, (x + 4)(x - 3) = 0, thus x = -4 and x = 3 using quadratic formula: x = [-b +- sqrt(b^2 - 4ac)]/(2a) where a = numerical coefficient of x^2 b = numerical ...
*Saturday, September 3, 2011 at 9:24pm by Jai*

**pre-cal**

What are the steps for solving this? Directions Use the quadratic formula to solve the equation in the interval [0,2PI). Then use a graphing utility to approximate the angle x. 4cos^2x-4cosx-1=0 thanks.
*Friday, January 1, 2010 at 2:54pm by james*

**maths**

for this quadratic equation: y2-4y-16 = 0 which two options are correct solutions, rounded to three decimal places? 1) -4.483 2) -3.243 3)-2.472 4) -1.472 5) -0.536 6) 5.243 7) 6.472 8) 12.443 Use the quadratic equation, we will be happy to critique your solution.
*Sunday, April 15, 2007 at 8:11pm by angel*

**Algebra 1**

1. Use the distance formula: distance = (4-1)²+(a-1)²=5² Solve for a (a quadratic equation) 2. Use Pythagorean formula: 8²+b²=14² Solve for b. 3(a) 7²+9²=49+81 = 130 ≠ 12² Therefore the three sides do not form a right triangle. ...
*Friday, May 31, 2013 at 7:13pm by MathMate*

**Solving Quadratic Equations**

I don't know what the steps are. Perhaps the first step is to identify the a, b, and c that fit into the quadratic formula. a = 1, the coefficient of the squared term. b = 5, the coefficient of the x term. c = -6, the number.
*Tuesday, May 18, 2010 at 2:24pm by DrBob222*

**math**

expand the two binomials, combine like terms, then put it in the form of a quadratic...you can then use the quadratic equation, or perhaps factor to find x.
*Tuesday, March 10, 2009 at 2:00pm by bobpursley*

**math**

one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
*Tuesday, May 14, 2013 at 5:50pm by ji*

**Geometry **

one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
*Tuesday, May 14, 2013 at 6:06pm by ji*

**chemistry**

Magnesium oxide forms from magnesium metal and oxygen gas. Write a word equation and an unblanced formula equation. Include all of the appropriate notations.
*Tuesday, February 3, 2009 at 11:40pm by kate*

**Algebra**

Find two consecutive positive integers such that the sum of the square is 85..(show your work) If X is the first integer, then X+1 is the next; therefore, the sum of those squares will be 85. X^2 + (X+1)^2 = 85 Solve for X, then add 1 to it for the second integer. Post your ...
*Wednesday, June 13, 2007 at 3:22pm by Tomika*

**maths**

how do i find out the the equation of the line of symmetry for f(x)=ax^2+bx+c ? please explain it do me thanks! The line of symmetry runs through the vertex. so the x of the vertex is -b/(2a) and the equation of the line of symmetry is x = -b/(2a) e.g. for f(x) = 2x^2 - 12x + ...
*Friday, May 25, 2007 at 4:04am by Emma*

**algebra**

1.Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in stadard form ax^2+bx+c=0 Solution 7, only solution 2.The width of a rectangle is less than the length. The area is 4ft^3. Find the length and the width.
*Saturday, December 17, 2011 at 10:51pm by lisa*

**chemistry**

You have two choices. 1)The simple choice, and one which doesn't always work, is to assume x is very small in comparison with 0.001 so that 0.001 - x = 0.001. That way you don't have a quadratic equation. You can try that, then see if 0.001 - x = about 0.001 or not. If x is ...
*Sunday, April 6, 2008 at 10:42pm by DrBob222*

**Chemistry**

Write a balanced chemical equation (molecular equation). Write a total ionic equation. write a net ionic equation. (NH4)2 SO4(aq)+Na2CO3(aq) -->
*Tuesday, March 15, 2011 at 9:52pm by Jake*

**algebra**

If the instructions are to solve by the quadratic formula, then this topic could be in grade 8 depending in what country you live. for any equation of the form ax^2 + bx + c = 0, x = (-b √(b^2-4ac) )/(2a) for your x^2 +9 = 0 a = 1, b = 0 , and c = 9 x = (0 √(0-...
*Monday, October 7, 2013 at 6:03pm by Reiny*

**math**

i think you mean 3k^2 + 6k = 6 thus, we can re write this as 3k^2 + 6k - 6 = 0 note that we can factor out 3 from each term and cancel it. thus we can re write this as k^2 + 2k - 2 = 0 using quadratic formula, k = [-b +- sqrt(b^2 - 4ac)]/(2a) substituting, k = [-2 +- sqrt(2^2...
*Saturday, May 21, 2011 at 8:15am by Jai*

**algebra**

i have very little information in my math book on the following questions. can you either tell me the answer or a link where i can find my own answer. thanks How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if ...
*Monday, November 15, 2010 at 7:07pm by Donni*

**math**

I need help finding x for this equation e^x (x^2 + 4x + 2)=0 thanks. e^x = 0 or x^2 + 4x + 2 = 0 the first has no real solution (actually x would have to an infinitely large negative number) The second is a quadratic, use the formula to solve it.
*Wednesday, May 9, 2007 at 10:31pm by eric c.*

**ALGEBRA 2**

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x= PLEASE, help me with this one problem I am stuck on! THANKS!
*Tuesday, April 16, 2013 at 6:03pm by student*

**ALGEBRA 2**

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x= PLEASE, help me with this one problem I am stuck on! THANKS!
*Tuesday, April 16, 2013 at 6:06pm by student*

**Pre calc**

The standard form is ax^2 + bc + c = 0 The value of ax^2 + bx +c will be zero when x = [-b +/- sqrt (b^2-4ac)]/2a If you want to write a quadratic equation that is zero at given values x=d and x=e, first write it as (x-d)(x-e) = 0 and then multiply it out for the standard form...
*Saturday, August 2, 2008 at 9:12am by drwls*

**Algebra**

I have a parabola that I have to write as an equation I found the vertex as (-3,-2) and the following points (-4,-1)(-2,-1),(-5,2),(-1,2). I can't seem to come up with the correct equation. I'm using the formula y=a(h-k)^2+k but I'm not doing something right. Can anyone help me?
*Sunday, May 15, 2011 at 10:21am by Jennifer*

**math**

x^2=3x-6 x^2-3x+6=0 In quadratic equation y=ax^2+bx+c discriminate is D=b^2-4ac In your case a=1 b= -3 c=6 D=b^2-4ac=(-3)^2-4*1*6=9-24= -15 When discriminante is negative quadratic have two imaginare solutions. If you want to know that solutions in google type: quadratic ...
*Thursday, February 17, 2011 at 1:11am by Bosnian*

**Algebra**

I do not know what your problem is. That is sort of the quadratic equation: x = [-b +/- sqrt(b^2-4ac)]/2a and you would get the two answers but I did not see the original quadratic so do not know if right or not (although I can do it backwards).
*Wednesday, March 19, 2008 at 7:21pm by Damon*

**Algebra**

Can someone help me with this question. I thought it was quadratic but now I am not sure. State whether the equation represents a linear, quadratic, exponential function or none of the above. x^2+ 6 = -8 x
*Thursday, January 14, 2010 at 1:44pm by Kate*

**algebra**

The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall? In answering this problem follow the steps below: 1. Represent the height as x and then write the width in terms of x (for example, 2x, 5.5x, 0.5x, ...
*Tuesday, January 3, 2012 at 11:32pm by Jennifer*

**Chemistry**

write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3 , reacts with 3,3,4,4,5,5-hexamethyl-1-hexyne, H-CC-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas , H2O . When balancing the equation , use the ...
*Monday, March 12, 2012 at 10:31am by Susan*

**algebra**

The guy wire, the telephone phone and the ground form a right-angled triangle. Your measurements are x, x+4, and 20. To solve for x, you could use the Pythagorean Theorem, a^2+b^2=c^2. Let a=x Let b=x+4 Let c=20 First, plug in the values for a, b and c, and then simplify. From...
*Sunday, December 2, 2012 at 11:01pm by Shawn*

**math(trig)**

i need to figure out how to write the formula for the following question In a right triangle a = 30 yds and t5an A = 2. Find b and c. I have the answers but do not know how to write the formula. Can you help me ?
*Tuesday, December 18, 2007 at 10:22pm by freddie*

**algebra**

The quadratic formula is (-b +/- sqrt(b^2 - 4ac))/2a for an equation in the form ax^2 + bx + c -3x^2 - 2x - 5 = 0 a = -3 b = -2 c = -5 x = (2 +/- sqrt(4 - 60))/6 x = (2 +/- sqrt(-56))/6 x = (1 +/- i*sqrt(14))/3
*Monday, July 20, 2009 at 7:49pm by Marth*

**algebra**

2x^2-2x-1=0 How do I use the quadratic formula to solve this because I am totally new at this and need help? Please show me the steps for this equation,so I will be able to do it own my own. Thank you.
*Sunday, September 5, 2010 at 10:56pm by paulina*

**algebra**

2.1t^2 - 82t + 95 = 15 2.1t^2 - 82t + 80 = 0 solve using the quadratic equation formula, I got t = 1.00 or t =38.05
*Sunday, December 5, 2010 at 8:03pm by Reiny*

**algebra**

can someone explain the benefits of writing a quadratic equation in vertex form and benefits of writing a quadratic equation in standard form? Name specific methods you can use while working with one form or the other. Any help will be appreciated.
*Monday, November 5, 2012 at 10:01pm by Lee*

**Math**

Your formula is correct. Assuming you add up the 3x and x to form 4x, you have to use the general solution of a quadratic equation. Do you know how to use it? =) By the way, x should be 8 if you use it right.
*Tuesday, October 14, 2008 at 7:33pm by Joshua*

**trig 30**

hey Rae, there is two ways you can do this... 1/ find the common factor of 2cos^2x+cosx=1 and bring out the front which = cosx(2cosx+1)=1 therefore either cosx=1 OR 2cosx+1=1 (because there will be multiple answers) for cosx=1 use the unit circle to show where cosx=1 which is ...
*Thursday, April 29, 2010 at 10:01pm by Belle*

**Chem:DrBob**

When you write the formula in word equation would it be : Octasilicon and oxygen reacted to produce sulfur trioxide? Would this be the balance equation? S8 + 12O2 -> 8SO3
*Monday, December 17, 2012 at 9:32pm by Shadow*

**Chemistry**

0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The molar mass of the compound is 124 g/mol. (a) Write a chemical equation for the combustion of this unknown hydrocarbon. (b) Determine the # of g and ...
*Wednesday, August 24, 2011 at 10:57pm by Anonymous*

**Algebra II**

Factor the first one by setting each term equal to 0. 2x - 3 = 0 2x = 3 x = 3/2 Do the same process for 3x - 5. For the second, look over the Quadratic Formula. It states that for an equation ax^2 + bx + c, x will equal the opposite of b plus or minus the square root of b ...
*Wednesday, November 28, 2007 at 6:46pm by Michael*

**Math x-int's**

How do I algebraically find the x-intercepts for this equation y = x^3 - 3x^2 + 3. I know I need to plug in y = 0 to solve for x. x^3 - 3x^2 + 3 = 0 But where do I go from there? I don't think I can factor, and I don't think I can use the quadratic formula.
*Saturday, December 8, 2007 at 6:01pm by jeff*

**math**

I need help with write the equation of the line which contains the point (0,negavtive 3), or written ars(0, -3) and whose slope is 4. if you want the equation in the form y = mx + b sub in -3 for y, 4 for m, and 0 for x for -3 = 4(0) + b so b = -3 equation: y = 4x -3 We could ...
*Friday, April 27, 2007 at 6:52pm by Don*

**Math**

Rewrite it in standard quadratic form as: 0.19t^2 - 2.56 t +6.60 = 0 The coefficients and constant are: a = 0.19 b = -2.56 c = 6.6 Then use the quadratic formula for the two roots: t = [-b +/1 sqrt(b^2-4ac)]/2a One of the solutions is exactly 10. The other is 3.4737
*Sunday, August 22, 2010 at 1:00am by drwls*

**Mat/117 DQ2**

Quadratic equations may be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods? Please provide examples. When might each method be most appropriate? Which method do you prefer? Explain why.
*Monday, February 27, 2012 at 5:25pm by Rose*

**Math**

for 2nd equation, we get x = 2y-3 thus plugging into first equation gets (2y-3)^2+9y^2 = 37. 4y^2-12y+9+9y^2 = 13y^2-12y+9=37 = 13y^2-12y-28 = 0. Solving with the quadratic formula gives us: 2,-14/13
*Tuesday, December 11, 2012 at 11:07am by Knights*

**Math**

When the leading coefficient a is positive, the parabola opens up ( concave up ) For function: x ^ 2 - 2 x - 8 the leading coefficient is a = 1 function is concave up When the parabola ia concawe up all walues between roots are negative. No negative number can have a real ...
*Saturday, March 31, 2012 at 2:07pm by Bosnian*

**math help plz**

i dont know how to solve it but i have the quadratic formula but i dont know is it the same when the 0= is in the begining and 0= is at the end. i can use that formula?because i get confused
*Monday, May 25, 2009 at 12:19pm by puppy101*

**math - question**

The number of solutions is not "at least" two. There is always two OR ONE solutions, but they may not be real numbers. The solutions may contain a term multiplied by the square root of a negative number, which is "imaginary". The reason for two solutions can be seen by looking...
*Friday, February 27, 2009 at 12:29pm by drwls*

**math**

x * y = 7 x - y = 5 One method: express one variable in terms of the other variable and then solve the single variable expression. If x - y = 5 then y = x - 5 substituting back into the first equation: x * (x - 5)=7 Solve for x, then substitue the x value into either equation ...
*Thursday, October 2, 2008 at 5:50pm by Quidditch*

**Math**

Write a brief scenario that can modeled with a linear equation. AND Summarize a situation modeled by a quadratic equation. I am completly lost with these two questions. I understand the difference between these two functins but don't know how to come up with a scenario or a ...
*Thursday, April 8, 2010 at 5:39pm by Carrie*

**12th grade - Math**

1. Factor by completing the square or the quadratic formula. However, factoring by trial and error is faster, noting that only a few rational factors are possible, namely x±1, x±2, x±3, x±4, x±6. 2. note that x is a common factor of all the ...
*Wednesday, September 1, 2010 at 8:26am by MathMate*

**Geometry**

Use Pythagoras x^2 + (x+1)^2 = 16 Expand to get a quadratic equation. Solve using the formula and use only the positive answer (I got a width of 2.28 and a length of 3.28)
*Wednesday, October 17, 2007 at 11:16am by Reiny*

**maths**

The area of the right angled triangle abc (x+4)(x+3) is twice the area of a square with sides x cm.Write a quadratic equation in terms of x.
*Thursday, January 23, 2014 at 6:12am by mandy*

**algebra**

The rectangular floor of a shed has a length 4 feet longer than its width, and its area is 140 square feet. Let x be the width of the floor. (a) Write a quadratic equation whose solution gives the width of the floor. (b) Solve this equation.
*Sunday, July 8, 2012 at 8:46pm by bulatsu*

**pre calc**

x^2+2x+5=0 This equation has two complex roots. If you have not done complex roots before, I suggest you check that the equation has been correctly posted. You can apply the quadratic formula directly, a=1, b=2, c=5, x=(-b±√(b²-4ac))/2a =(-2±√(2&...
*Thursday, October 29, 2009 at 11:29pm by MathMate*

**Quadratic Formula**

Some points to remember: 1. Be sure to set your equations equal to 0. 2. See if the equation factors easily. 3. If it does, factor, then set each factor equal to 0. 4. Solve for the solutions. Let's look at your first equation: m^2 - 5m - 14 = 0 (I'm using ^2 to mean squared...
*Tuesday, January 10, 2012 at 5:48pm by MathGuru*

**algebra2**

This looks like a "prime" quadratic. With trial and error trying: (-4t )(t ) or (-2t )(t ) you cannot get it to work. So there are no "interger" solutions. You can use the famous "quadratic equation" to get an approximation. ARe you familiar with this?
*Tuesday, January 29, 2008 at 9:21pm by DanH*

**math**

In google type : quadratic equation calculator steps When you see list of results click on : algebra . com / algebra / homework / quadratic / When page be open type your equation and click option : Submit Query You will see solution
*Friday, October 26, 2012 at 3:09pm by Bosnian*

**Geometry HOMEWORK HELP ME PLEASE!**

Draw the triangle with vertices D(-2,1), U(4,9), and E(10,1) On a Graph. 2. Find DU, UE, AND DE. (Distance) 3. Classify Triangle DUE by its sides. 4. Write the standard form of the equation of each line: DU, UE, and DE.Also, find the slode and then the y-intercept. Start with ...
*Thursday, March 20, 2008 at 5:49pm by Brian*

**Chemistry**

Let me help somewhat here. 1. Although all those digits are correct, you need not include all of them for the Ka of 1.75 x 10^-5 (generally) is not known any better than three significant figures. Therefore, use 1.33 x 10^-3 as the answer. 2. Is there another way? yes. An ...
*Saturday, January 19, 2008 at 5:50am by DrBob222*

**math**

Use the substitution u=x(1/3) The original equation 3x^(1/3) + 2x^(2/3) = 5 now becomes 3u + 2u² = 5 Solve by the quadratic formula for u, and finally replace u by x(1/3).
*Tuesday, August 4, 2009 at 12:01pm by MathMate*

**algebra help please**

First write this quadratic in its general form v^2 + 17v - 72 = 0 I cannot find any two numbers that have a difference of 17 and multiply to get 72 Secondly, the discriminant value is 17^2-4(1)(-72) = 577 This is not a perfect square, so the equation has irrational roots, ...
*Wednesday, March 19, 2008 at 9:37pm by Reiny*

**Math (Trig)**

put it in quadratic form. 2 (sinX)^2 + sinX-1=0 now solve for sin x using the quadratic equation a=2 b=1 c=-1
*Sunday, December 16, 2007 at 6:55pm by bobpursley*

**Algebra**

-√3, 3√3 Write a quadratic equation in the variable X having the given numbers as solutions. Type in standard form ax^2 + bx +c =0
*Saturday, April 21, 2012 at 5:58pm by Stella*

**math**

They want you to solve for the unknown variable. You need to rewrite the equation in quadratic form ax^2 + bx + c = 0, first of all. y^2 -6x = -7 can be rewritten y^2 -6x +7 = 0 Use the quadratic formula to solve. http://www.purplemath.com/modules/quadform.htm y = [6 +/-sqrt(...
*Saturday, June 13, 2009 at 12:50am by drwls*

**trig**

In the quadratic equation ax²+bx+c=0 b/a = -(sum of the two roots) c/a = product of the two roots. Assume a=1, then b=-(7-3i+7+3i)=-14 c=(7-3i)*(7+3i)=49+9=58 So the quadratic equation is x²-14x+58=0 Check by solving the equation and you should get back 7±3i ...
*Tuesday, December 21, 2010 at 5:33pm by MathMate*

**Algebra Quadratic Equations**

When a quadratic equation has one solution, there will be one x-intercept; when there are two solutions, there will be two x-intercepts and when the equation has no solution, the graph will have no x-intercepts",is there another way of determining this?
*Wednesday, February 13, 2008 at 7:31am by Marysvoice*

**Math**

We have a quadratic equation here. Do you want to factor this equation? What exactly do you want to do with this equation?
*Tuesday, February 19, 2008 at 7:32pm by Guido*

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