Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 415881: Marissa has $4.70 in quarters and dimes. If she has 9 more quarters than dimes, how many of each coin does she have?
?dimes
?quarters

Dimes Quarters
Number: x x + 9
Value(cents): 10(x) 25(x + 9)

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Question 416110: Simultaneous Equations: sorry didnt see Cat. for that:
Solve for x,y, and z:
x + 2y + z = 2
5x = z
y = -2x

Click here to see answer by mananth(16946) About Me 

Question 416154: I'm trying to find the number of tickets sold on the last day, how many days will the peak or low occur and now many tickets will be sold at its lowest. What is the point of the vertex
Click here to see answer by richard1234(7193) About Me 

Question 416352: A car travels 300 km at a certain speed. If the speed had been increased by 10 km/h, the trip could have been made in 1 hour or less time. Find the actual speed.
s = d/t
s = 300/60 = 50 what about the 10 increase

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Question 416350: Solve by using a quadratic equation to find three consecutive integers such that the sum of their squares is 1877.
Click here to see answer by htmentor(1343) About Me 

Question 416358: help me with this question. the directions are slove each equation by graphing. If integral roots cannot be found, estimate the roots by stating the consecutive integers between which the roots lie. The question is X^2 + 7x + 9.
Click here to see answer by josmiceli(19441) About Me 

Question 416443: Solve the following equation:
4y-2=8y+14

Click here to see answer by MathLover1(20849) About Me 

Question 416453: Solve the following equation.
0.5x-0.1=0.9-0.7(4-2x)

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Question 416448: 10 is 50% of what number?
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Question 416447: What percent of 25 is 15?
Click here to see answer by rfer(16322) About Me 

Question 416444: Solve the equation:
5/2y+1/2=1/2y-5/2

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Question 416441: Solve the following equation:
4x+1/2=3/4x-9/8

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Question 416568: Can you help me figure out the write values to use, when graphing a quadratic function using a table.
Click here to see answer by praseenakos@yahoo.com(507) About Me 

Question 416649: Find two consecutive even integers whose product is 24 more than 8 times the larger integer
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Question 416698: The square of a number is 10 less than 7 times the number. Find the number.
Click here to see answer by mananth(16946) About Me 

Question 416744: 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?


Click here to see answer by lwsshak3(11628) About Me 

Question 417000: Shelly is 5 years older than Michele. Four years ago the sum of their ages was 65. Find the age of each person now.
Shelly is ? years
Michele is ? years

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Question 416994: How do you solve x2=36
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Question 416999: 3x^2+39x+108=0
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Question 417035: Justin is 4 years older than Ethan. In 9 years the sum of their ages will be 30. Find the age of each boy now.
Justin is ? years
Ethan is ? years

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Question 417052: Ok so in algebra today we learned like 2 days ago the QUADRATIC FORMULA...well i just dont understand how to solve it. for ex.
3x%5E2%2B4x-8=0
I dont understand how to do the steps to get the answer
so i do x=-4+/-=sqrt (4)^2-4(3)(-8)
then x= +/-+sqrt 16-96/ 2x3
i dont know where to go from there.

Click here to see answer by checkley79(3341) About Me 
Question 417052: Ok so in algebra today we learned like 2 days ago the QUADRATIC FORMULA...well i just dont understand how to solve it. for ex.
3x%5E2%2B4x-8=0
I dont understand how to do the steps to get the answer
so i do x=-4+/-=sqrt (4)^2-4(3)(-8)
then x= +/-+sqrt 16-96/ 2x3
i dont know where to go from there.

Click here to see answer by Earlsdon(6294) About Me 

Question 417121: 2xsquared-3x-5=0
Click here to see answer by jim_thompson5910(35256) About Me 
Question 417121: 2xsquared-3x-5=0
Click here to see answer by stanbon(75887) About Me 

Question 417158: 2t^2-8t=0
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Question 417008: what are the steps to solving quadratic equations?
Click here to see answer by richard1234(7193) About Me 

Question 417259: x^2-16x+51
Click here to see answer by edjones(8007) About Me 

Question 417324: I need help solving and graphing this equation: x%5E2+-+5x+%2B+6+=+0
x%5E2+-+2x-3x%2B%28-2%29%28-3%29=+0
x%28x-2%29-3%28x-2%29=0
%28x-2%29%28x-3%29=0
x-2=0+OR+x-3=0
x=2+OR+x=3
and there are two solutions : 2 , 3
Graph y=x%5E2-5x%2B6
graph%28600%2C400%2C-10%2C10%2C-3%2C10%2Cx%5E2-5x%2B6%29

Click here to see answer by dnanos(83) About Me 

Question 417535: Find the x-intecepts of y=225-x^2

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Question 417333: I need help with this problem.

Solve for 2m=5
I got m=2.5 but the answers are all in fractions.
Help?

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Question 417627: Two young boys, Bob and Tom, are mowing grass one summer as a means of making money to save for their college education. They always split the work and proceeds equally. They have one lawnmower. They obtain a new job which involves mowing a 40' by 80' rectangular vacant lot. The owner wants it mowed in a collapsing pattern (begin mowing around the outside perimeter, with each pass moving closer to the center of the lot). Bob will mow first, turning the work over to Tom when he has mowed exactly half the area. Bob decides that he will stop at a uniform distance in from the perimeter on all sides, leaving a remaining rectangle for Tom to complete. At what uniform distance (in feet to 2 decimal places) should Bob stop mowing? Solve by creating and solving a quadratic equation.



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Question 417699: Pat is 28 years older than his son Patrick. In 8 years Pat will be twice as old as Patrick. How old are they now?
Patrick is ? years old
Pat is ? years old

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Question 417696: The circumference of a circle is given by the formula C = 2πr. Find r if the circumference C is 176 meters and π is 22/7.
? meters

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Question 417935: a farmer has $2400 to spend to fence two rectangular pastures. the local contractor will build the fence at a cost of $6.25/m what is the largest total area that the farmer can have fenced for that price ?
Click here to see answer by rfer(16322) About Me 

Question 417974: Graph the horizontal line y = 8. (Do this on paper. Your instructor may ask you to turn in this graph.)
Name its intercept.
The (x or y) - intercept is ?
Choose either x or y

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Question 417974: Graph the horizontal line y = 8. (Do this on paper. Your instructor may ask you to turn in this graph.)
Name its intercept.
The (x or y) - intercept is ?
Choose either x or y

Click here to see answer by richard1234(7193) About Me 

Question 417970: Graph the line that passes through the points (-3, -5) and (8, 6)?
What are the x- and the y-intercepts for this line?
x-intercept
a = ?
y-intercept
b = ?

Click here to see answer by mananth(16946) About Me 

Question 417965: Mike has $1.75 in dimes and nickels. If he has 5 more nickels than dimes, how many of each coin does he have?
? nickels
? dimes

Click here to see answer by algebrahouse.com(1659) About Me 

Question 417966: Kelly has a collection of nickels, dimes, and quarters with a total value of $7.30. There are five more nickels than dimes and twice as many quarters as nickels. How many of each coin is in her collection?
? nickels
? dimes
? quarters

Click here to see answer by mananth(16946) About Me 

Question 417978: I need sorry help with this problem: Find the perimeter
3c^2-+12c-8 left side of perimeter|_\ right side of perimeter 126^2-8c+9
c-5 this is the bottom of the perimeter
What is the perimeter
Please someone help. I have tried all day to figure this out. Sorry that I could not make a better perimeter.
Thank you for your help:)
KB

Click here to see answer by stanbon(75887) About Me 

Question 417964: Sue has $2.30 in dimes and nickels. If she has 11 more dimes than nickels, how many of each coin does she have?
? nickels
? dimes

Click here to see answer by mananth(16946) About Me 

Question 418019: Factor:72+22x-x²
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Question 418019: Factor:72+22x-x²
Click here to see answer by Edwin McCravy(20054) About Me 

Question 417969: Graph the line that passes through the points (-1, 3) and (9, -7)?
What are the x- and the y-intercepts for this line?
x-intercept
a = ?
y-intercept
b = ?

Click here to see answer by lwsshak3(11628) About Me 

Question 417961: Marissa has $4.70 in quarters and dimes. If she has 9 more quarters than dimes, how many of each coin does she have?
? dimes
? quarters

Click here to see answer by mananth(16946) About Me 

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, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240