Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 134277: Find the slope if it exsists.
x+6y=12
Click here to see answer by jim_thompson5910(28595)

Question 134279: 4.3x + 23.0 > 57.5 - 7.2x
The solution set is {x I x > ? }
In between the 2 X's is just a straight line not an I I do not no how to type that. Can someone please help me with this??
Click here to see answer by jim_thompson5910(28595)

Question 134283: Graph the line containing the given pair of points and find the slope.
(2,4), (-1,-2)
Can someone please help me with this, yes I am taking Algebra again and need some serious help with some things, if someone can help I would much appreciate it.
Click here to see answer by jim_thompson5910(28595)

Question 134286: Solve then graph 7x_>28
Of course the _ is supposed to be under the > Would it be a clear, or solid circle when graphing it?

Click here to see answer by jim_thompson5910(28595)

Question 134287: Find a slope if there is one
y= -4x+2
m=
Simplify your answer, type an integer or fraction or N if unidentified.
Help me please.
Click here to see answer by jim_thompson5910(28595)

Question 134285: Plot (3, 0)
Would this simply be 3 spaces to the right on the middle line?
Click here to see answer by jim_thompson5910(28595)

Question 134312: Solve the following equations for x by the square root method
64x2=25
That equation is 64x squared = 25. Please help. I am totally confused!!!
Click here to see answer by jim_thompson5910(28595)

Question 134317: Solve the following equation by completing the square
x2-8x+15=0
Once again I'm lost!!!!
Click here to see answer by MathLover1(6634)

Question 134323: solve the following equation by completeing the square
x2+3x=5
Click here to see answer by jim_thompson5910(28595)

Question 134329:
Please help me solve this equation by completing the square
Click here to see answer by jim_thompson5910(28595)

Question 134326: solve the following equation by completeing the square
x2+3x=5
Click here to see answer by jim_thompson5910(28595)

Question 134333: Please help me solve this equation: .
Please help me solve this equation by completing for square
Click here to see answer by josmiceli(9691)

Question 134333: Please help me solve this equation: .
Please help me solve this equation by completing for square
Click here to see answer by Earlsdon(6287)

Question 134353: solve by using quadratic formula
t^2 + 2t + 2 = 0
Click here to see answer by jim_thompson5910(28595)

Question 134366: Two mechanics, Bonita Rich and Pamela Pearson, take 8 hours to re-build an engine when they work together. If each worked alone, Bonita, the more experienced mechanic could complete the job 2 hours faster than Pamela. How long would it take each of them to re-build the engine working alone?
The time it takes Bonita is about ? hours. Round to two decimal places as needed.
The time it takes Pamela is about ? hours. Round to two decimal places as needed.
Click here to see answer by edjones(7569)

Question 134367: The O'Connors own a small janitorial service. John requires 3/4 hour more time to clean the Moose club by himself than Chris does working by herself. If together they can clean the club in 6 hours, find the time required by each to clean the club.
The time it takes Chris is about ? hours. Round to two decimal places as needed.
The time it takes John is about ? hours. Round to two decimal places as needed.
Click here to see answer by stanbon(57377)

Question 134394: Determine the constant that must be added to the given expression to complete the square and express the resulting trinomial as the square of a binomial
1. c²-4c
2. b²+4/3b

Click here to see answer by jim_thompson5910(28595)

Question 134406: How would you begin to solve the equation 3x+x(x-1)=0. I have worked and worked on this problem. I have an answer but when put back in to equation to check. It does not work. My answer is 1 + square root of 11 / 2 , 1 - square root of 11/2.
Click here to see answer by ankor@dixie-net.com(15657)

Question 134365: The area of a rectangular wall of a barn is 198 square feet. Its length is 4 feet longer than twice its width. Find the length and width of the wall of the barn.
width= ? feet
length= ? feet
Click here to see answer by checkley71(8403)

Question 134448: Graph the equation and identify the y-intercept
y=1/4x The 1/4 is a fraction.
Click here to see answer by jim_thompson5910(28595)

Question 134440: How many tractors need to be sold for a profit of $20,000
n = number of tractors
P(n)=2.7(n)+9(n)-3
I tried to use the quadratic formula but I can't figure it out. I know that the answer is supposed to be 7.
Click here to see answer by stanbon(57377)

Question 134476: solve equation by completing the square
x^2 + x - 5 = 0
Click here to see answer by jim_thompson5910(28595)

Question 134505: one leg of a right riangle is 1/3m shorter than the other leg. if the hypotenuse of the triangle is 5/3m, find the lengths of both legs.
Click here to see answer by edjones(7569)

Question 134509: The temperature, T, in degrees Fahrenheit, in a car's radiator during the first 4 minutes of driving is a function of time, t. The temperature can be found by the formula T=5.8t^2+13t+32, 0 less than or equal to t less than or equal to 4.
a) What is the car's radiator's temperature at the instant the car is turned on?
b) What is the car's radiator's temperature after the car has been driven for 3 minutes?
c) How long after the car has begun operating will the car's radiator temperature reach 90 degrees Fahrenheit?
Click here to see answer by vleith(2825)

Question 134506: The height in feet above the ground of a ball thrown straight up with an initial velocity of 96 ft/sec is given by the formula h(t)=-16t^2 + 96t + 4.
where T is the time, in seconds, after the ball is thrown. find the values of T for which the height of the ball is 48 feet. find the exact solutions.
Click here to see answer by rajagopalan(158)

Question 134544: a rectangular room has an area of 189 square feet and a perimeter of 55 feet. what are the dimensions of the room? Find exact solution.
Click here to see answer by vleith(2825)

Question 134543: the revenue R in dollars for the sale of x items at Joe's Dollar Store can be modeled by the equation R=1400x-5x^2. what number of items would provide a revenue of $16,080?
Click here to see answer by vleith(2825)

Question 134488: one leg of a right riangle is 1/3m shorter than the other leg. if the hypotenuse of the triangle is 5/3m, find the lengths of both legs.
Click here to see answer by checkley71(8403)

Question 134601: The ratio of the measures of the length and width of a rectangle is 5:7. The area of the rectangle is 1,715 square feet. Find the dimensions.
Click here to see answer by vleith(2825)

Question 134623: Translate to an inequality. Use x as a variable. The number of people in the chess club is less than or equal than 16.
The answer is __ __ __
Help me please.
Click here to see answer by vleith(2825)

Question 134624: Solve using the addition principle.
2x+8> x +10
The solution set is X X > __
Help me please again I do not understand what I am supposed to do with this.
Click here to see answer by solver91311(16897)

Question 134641: Write as a single power:
[27^(-x+2)*(1/9)^2x]/3(81)^(x-4)
My answer is 3^(-11x+22). Can someone Please confirm this for me??
Click here to see answer by stanbon(57377)

Question 134656: How would you solve a problem like 4x(x-2)-5x(x-1)=2? When I tried the solution was weird. Could you please help me?
Click here to see answer by stanbon(57377)

Question 134647: Could you please help me answer this problem using quadrati equations:
(p-3)(p-4)=42

Thanks
Click here to see answer by edjones(7569)

Question 134642: Solve for x:
logbase9 x + -1/2 I thought the answer was x=3 but I was told that I was wrong:(
Click here to see answer by Earlsdon(6287)

Question 134645: Solve :
a) 2logbase6 x - logbase6 4=logbase6(x-1)
b) 4^(1-x)=3*5^x

Click here to see answer by edjones(7569)

Question 134709: No text book information available I am an online student.
Please assist me in solving this word problem.
A basketball p;ayer completed 44.6% of his field goals in the most recent season. He made 286 field goals. How many did he attempt? Please simplify
Click here to see answer by jojo14344(1512)

Question 134718: There are 3 question.
1.How do you know if a quadratic equation will have one, two,or no solutions?
2. How do you find a quadratic equation if you are only given the solution?
3. Is it possible to have different quadratic equations with the same solution?
This information is for my college algebra class.
Thanks Roosevelt
Click here to see answer by stanbon(57377)

Question 134694: The roots of the quadratic equation x^2-12x+37=0 are 5 and 8. Find the base system in which this equation is written
Click here to see answer by vleith(2825)

Question 134731: Please tell me what I am doing wrong.
An employee's new salary is $28,140 after getting a 5% raise. What was the salary before the increase in pay?
I just subtracted the 5% and came up with $26,733 as my answer. It was wrong.
Thank you for your time
Click here to see answer by vleith(2825)

Question 134638: a.This equation stands for the river's cross section at its deepest. y=0.0581x^2-2.3238x, where y is the depth of the river(in feet) and x the horizontial distance from the bank of the river(in feet). Assume that the surface of the river is modeled by y=0. Graph the river's cross section labeling the vertex, axis of symmetry.(use a modified coordinate plane;the left bank will be one of your solutions at the origin.) b. Your boat is directly above the deepedst point of the river. You drop your line with a sinker at the end. Your line is 25 ft. long. Will your sinker fouch the botton.Explain. c. There is a fish detector on the boat. The detector shows that there is a school of fish 18 ft. directly below you. You are 8 ft. from the bank of the river. Is the fish detector accurate? Explain.
Click here to see answer by ankor@dixie-net.com(15657)

Question 134785: if the roots of the quadratic equation differ by 4, show that . ThNK yOU for your help
Click here to see answer by solver91311(16897)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250