# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 65481: Subtract and express result in simplest form 5a - 12 - 3a - 2 ------- ------- a^2-8a+15 - a^2-8a+15 The top part of the fraction I believe would end up looking like this: 5a - 12 = -7a 3a - 2 = 1a The bottom part of the fraction would result in a^2-8a+15 = 23a^3 Leaving the equation ending with the result of: -7a - 1a ------------- 23a^3 23a^3 Simplest form would be: -6a ---- 23a^3 Is this correct for this problem? Thank you Click here to see answer by stanbon(60771)

 Question 65476: Divide the fraction: 6p-18 / 3p-9 --------------- 9p / p^2+2p The first step is to invert the second fraction I believe: 6p-18 / p^2+2p ---------------- 9p 3p-9 The next step is to cancel out I think: 3 goes in to 6, 9, and 18 The last fraction has no cancel outs leaving the equation looking like this: 2p-6 / p^2+2p --------------- 3p / 3p-9 From here I become preety lost. Is there any hope for me in figuring this problem out? I would be happy with a good break down for future reference as well so I could really figure them out. Thank you in advance for the great help! Click here to see answer by stanbon(60771)

 Question 65480: Subtract and express result in simplest form x^2 - 9 --- --- x-3 - x-3 If I was to continue on with this I would first cancel out the x-3 since they are both equal to each other Then to do the top I believe I would just say it is -9x^2 the answer being 9x^2, is this correct? Thank you Click here to see answer by checkley71(8403)
 Question 65480: Subtract and express result in simplest form x^2 - 9 --- --- x-3 - x-3 If I was to continue on with this I would first cancel out the x-3 since they are both equal to each other Then to do the top I believe I would just say it is -9x^2 the answer being 9x^2, is this correct? Thank you Click here to see answer by stanbon(60771)

 Question 65475: Multiply the fraction and put in simplest form: 2x^2-x-3 * 3x^2-11x-20 ------------------------ 3x^2+7x+4 * 4x^2-9 It then says to factor but when it says to factor I become lost and confused on the whole ordeal. Is there a way someone cuold help me out with the answer and a good break down of how to work a problem like this for the future? Thank you in advance for the great help :-) Click here to see answer by stanbon(60771)

 Question 64961: PLEASE HELP: Write 3-{-36 in standard form (they dont have the symbol for what i needed which was in the shape of a divisional sign so i used { Click here to see answer by stanbon(60771)

 Question 65534: Find x : m/c - 3a + c/x = f Click here to see answer by stanbon(60771)

 Question 65547: Solve each of the following systems by graphing. (10) 2x – y = 4 2x –y = 6 Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. (12) 2x +3y = 1 5x + 3y = 16 Click here to see answer by tanimachatterjee(60)

 Question 65548: Solve each of the following systems by substitution. (16) 5x –2y = -5 y –5x = 3 (20) 8x –4y = 16 y = 2x –4 Solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent. (38) 10x +2y = 7 y = -5x + 3 Click here to see answer by chitra(359)

 Question 65428: Find x : m/c - 3a + c/x = f thank you Click here to see answer by funmath(2926)

 Question 65569: 4y + 2y ---------- ---------- y^2 + 6y + 5 y^2 - 1 I am just so lost on how to understand these types of problems! I become frustrated because I always end up with the wrong answer. Is there any hope in understanding this type of problem? Thank you for the great help :-) Click here to see answer by checkley71(8403)

 Question 65583: Write this ratio in simplest form: 1/10 / 1/4 First I must flip the second problem: 1/10 / 4/1 Now I can get rid of the 10 and 4 by dividing it by 2 Leaving it with: 1/5 / 2/1 Now I can cross out the ones: 5 / 2 Giving me an answer of: 2 Although I do not believe this is right because I can not have a remander right? Click here to see answer by ptaylor(2058)

 Question 65582: Simplify the fraction: w+3 --- 4w ------- w-3 --- 2w This equation does not make sense to me, it is two fractions in one fraction. How do I figure this out? Thank you Click here to see answer by checkley71(8403)

 Question 65584: The combined resistance of two resistors r1 and r2 in a parallel circuit is given by the formula: Rt = 1 ------- 1 1 --- + --- R1 R2 Thank you for the help Click here to see answer by Nate(3500)
 Question 65584: The combined resistance of two resistors r1 and r2 in a parallel circuit is given by the formula: Rt = 1 ------- 1 1 --- + --- R1 R2 Thank you for the help Click here to see answer by checkley71(8403)

 Question 65573: Solve and check the equation for X x/6 - x/8 = 1 This equation to me does nto equal 1: x - x = 0 6 - 8 = -2 The equation should be -2 correct? Click here to see answer by 303795(602)

 Question 65576: Solve the equation for X 2/5 = x-2/20 To get this equation forst I must figure out what x is: 5-2=3 10-2=8 12-2=10 2/5 = x-2/20 2/5 = 10-2/20 Simplest form= 10/5=2 20/5=2 Leaving the eqation with x=12 Is this right: Click here to see answer by checkley71(8403)

 Question 65575: Solve and check the equation for X 2 = 3 + 9 ----- ------- ----------- x+2 x+6 x^2+8x+12 I am confused on this probelm. They added way to many things in there for me to understand. Thank you for the help Click here to see answer by checkley71(8403)

 Question 65574: Solve and check the equation for X x - x+1 = 8 --- ----- ----- x-2 x x^2-2x I would first cross out the two x's Leaving the equation looking like: 0 x+1 = 8 ---- - ----- ----- x-2 0 x^2-2x To go from here I believe I would add x+1= 1x and subtract x-2 which equals -2x The equation would look like this: -2x - 1x = 8 ----- x^2-2x From here I am lost but I think I became lost a while ago Click here to see answer by checkley71(8403)

 Question 65591: Solve (4x + 5 / 3) + 2 = x/7 Click here to see answer by funmath(2926)

 Question 65593: Find x : ay = b(c/x+e + 3f/h) Click here to see answer by funmath(2926)

 Question 65656: please help me. I am a virtual school student and do not understand how to figure thease out even with the answers. 1)15m+3 ------ 2 =-6 2)3/2*-15=-12 3)-7x+3=-15/2 4)4x+1/2(12*t2)=3 5)3/2(x+8)=6x Click here to see answer by funmath(2926)

 Question 65703: Solve for X 25x^2 = 13 The X would be a negative number I beleive, is this correct? Click here to see answer by funmath(2926)

 Question 65732: a Divided by b + 1 / b + x/c Click here to see answer by stanbon(60771)

 Question 65705: Solve for X x^2 + 4x + 4 = 7 (factor the left hand side) 4x + 4 = 8x x^2 + 8x = 7 I have 2 X's and this confuses me since I can not factor them to come up with it to = 7, can someone please explain, thank you Click here to see answer by checkley71(8403)

 Question 65704: Solve for X: 2(x-5)^2=3 I know the first step I believe is to multiply the 2 towards the x and the 5: 2*x = 2x 2*5 = 10 (2x - 10)^2 = 3 The next step is to figure out what X is correct? 2(x) - 10^2 = 3 Gosh I am lost on this step, could someone please give me a hand, thank you Click here to see answer by checkley71(8403)

 Question 65770: Solve the quadratic equation by completing the square: 2x^2 + 10x + 11 = 0 Can someone please explain to me the idea behind the quadratic equation, thank you Click here to see answer by Earlsdon(6294)

 Question 64595: Solve, using the five-step method. 1. Emma joined a DVD movie club. It cost \$10 to join and \$17.50 for each DVD ordered, including shipping charges. When her first order arrived, she received a bill for \$115. How many DVDs did she order? 2. Laurie’s car gets 20 mi/gal. She plans to drive 440 mi on her vacation. How many gallons of gas will Laurie need for the trip? Click here to see answer by faceoff57(82)

 Question 65817: Solve for X: x^2+4x+4=7 The answer I recieved was: X=.645 My teacher has said this is wrong and is not in algebra format. Can someone please help me with the answer and the correct format? Thank you so much for the wonderful help this site brings me and many others. Click here to see answer by checkley71(8403)
 Question 65817: Solve for X: x^2+4x+4=7 The answer I recieved was: X=.645 My teacher has said this is wrong and is not in algebra format. Can someone please help me with the answer and the correct format? Thank you so much for the wonderful help this site brings me and many others. Click here to see answer by stanbon(60771)
 Question 65817: Solve for X: x^2+4x+4=7 The answer I recieved was: X=.645 My teacher has said this is wrong and is not in algebra format. Can someone please help me with the answer and the correct format? Thank you so much for the wonderful help this site brings me and many others. Click here to see answer by Edwin McCravy(9717)