Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 91496: Hello out there to everyone,I need some help with some problems,the first one is,Solve:2n(n+5)=0.The next one is,Find the amount of money in a bank account if the initial deposit is $4,000 with an annual rate of 2.5% for 5 years.The third one is,Use the quadratic formula to solve:5x^2+12=-6x.And the last one is,Use the quadratic formula to solve:-x^2+7x negative10 =0.Thanks to whoever can help.
Click here to see answer by stanbon(75887) |
Question 91628: Lori wants to know which outcome (a or b) is more likely to occur: Assume there is one winning ticket in the box. Justify your answer.
a.) Ob6taining a winning ticket by drawing once from a box of 15 tickets.
b) Obtaining a winning ticket both times by drawing twice with replacement from a box of 4 tickets?
Click here to see answer by stanbon(75887) |
Question 91627: Jessica has entered 2 participants from her youth group in a siging contest. Also entered in the contest are: 7 students from St. Michales, 3 from Trinity, 3 from Beautiful Savior and 6 from St. John's. In how many ways can the competition finish if we only consider the congregation of those who entered?
Click here to see answer by stanbon(75887) |
Question 91699: decide all values of b in the following equations that will give one or more real number solutions.
a. 3x^2+bx-3=0
b. 5x^2+bx+1=0
c. -3x^2+bx-3=0
d. Write a rule for judging if an equation has solutions by looking at it in standard form.
Click here to see answer by jim_thompson5910(35256) |
Question 91684: As Gina was working in her new yard, she decided she needed a little more color. When she went to the garden center at Costco, she spotted 2 azalea, 1 rhododendron and 2 daphne that she liked. If an experiment consits of her choosing 2 of the above ploants,
a) What is the sample space of this experiment?
b) What is the probability of selecting two plants not of the same type?
Click here to see answer by stanbon(75887) |
Question 91763: I am not that good with word problems and I am having problems solving this problem
A garden area is 30 ft long and 20 ft wide. A path of iniform width is set around the edge. If the remaining garden area is 400 ft^2, What is the width of the path?
Thanks a million for the help
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 91762: this is formula for trapezoid A=h/2(b+c) whats the formula for h? is it :
A/2(b+c)=h ? or 2(b+c)/A= h, or b+c/A= h/2
this is from algebra 1 review handout i got not in a book.
note: all email i get other than this problems answers or other related mail to math will be reported as spam.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 91978: I am having a problem with this word problem, I am not good at them and need some help.
Business and finance : The demand eqaurion for a certain type of printer is given by D=200p+35000.
The supply equation is predicted to be S= -P^2+400p-20000
Find the equalibrium price.
Thanks a million
Click here to see answer by stanbon(75887) |
Question 91956: Okay - this is very weird -
I have three sets of ordered pairs:
(0,0) (432.57,0) (225, 190)
(0,0) (40.16,0) (21,11)
(0,0) (104,84,0) (58,64)
I need to go to "QuadReg" (???) and get the quadratic equations!!
I have been working and just can't get it - can someone oh please give me the equations!!!
Thank you
LLo
Click here to see answer by stanbon(75887) |
Question 91977: I am having a problem with this word problem, I am not good at them and need some help.
Geometry: The length of a rectangle is 1 cm longer than its width. If the diagonial of the rectangle is 4cm what are the dimensions of the rectangle?
Thanks a million
Click here to see answer by scott8148(6628)  |
Question 92100: I am not ggod at word problems and I am having trouble on this one
The eqaution H=-16t^2+112t gives the height of an arrow, shot upward from the ground with initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. find the time it takes for the arrow to reach a height of 180ft.
Thanks a million
Click here to see answer by stanbon(75887) |
Question 92099: I am totally lost and need some help on theses problems
For each eqaution identify the axis of symmetry, creat a suitable table of value and sketch a gragh
Y=X^2-5x+3
and also Y=X^2+6x-2
Thanks a million
Click here to see answer by stanbon(75887) |
Question 92105: I need some help
I am not sure what method was used to solve this problem
4x^2-8x+3=5
4x^2-8x-2=0
2x^2-4x-1=0
x=4+-square root 16-4*2*-1/4
x=4+-square root 24/4
x=4x-2 square root 6/4
x=1+1/2square root6 or
x=1-1sqaure root6
Thank you for the help
Click here to see answer by funmath(2933) |
Question 92105: I need some help
I am not sure what method was used to solve this problem
4x^2-8x+3=5
4x^2-8x-2=0
2x^2-4x-1=0
x=4+-square root 16-4*2*-1/4
x=4+-square root 24/4
x=4x-2 square root 6/4
x=1+1/2square root6 or
x=1-1sqaure root6
Thank you for the help
Click here to see answer by stanbon(75887) |
Question 92194: According it Descartes' Rule of Signs, (a) how many positive real roots does each of the following have? (b) how many negative roots? i have no idea how to do this im trying to learn this stuff on my own and its hard please help
f (a) = a^5 - 4a^2 - 7 (a)__________ (b)_________
Click here to see answer by jim_thompson5910(35256) |
Question 92195: According it Descartes' Rule of Signs, (a) how many positive real roots does each of the following have? (b) how many negative roots? 17) f (x) = 3x^3 + 9x^2 + 8x (a)_________ (b) __________
Click here to see answer by uma(370) |
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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, 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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
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