Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 936233: transform the quadratic function y=-2x^2-12x-10 into vertex form. find the vertex, x and y intercepts.
Click here to see answer by srinivas.g(540)

Question 936233: transform the quadratic function y=-2x^2-12x-10 into vertex form. find the vertex, x and y intercepts.
Click here to see answer by MathLover1(20849)

Question 936241: The product of two numbers is 90.
One number is 3 more than twice the other number.
Model these numbers with a quadratic equation.
Solve the equation by factoring and using the Zero-Product Property.
Click here to see answer by ewatrrr(24785)

Question 936332: Find the integral root of
.
X^3-2X^2-X-6=0
Click here to see answer by MathLover1(20849)

Question 936658: A box is to be constructed with a rectangular base and a height of 5 cm. If the rectangular base must have a perimeter of 28 cm, which quadratic equation best models the volume of the box?
Click here to see answer by Fombitz(32388)

Question 936660: Why does a quadratic equation have two answers?
Click here to see answer by ewatrrr(24785)

Question 936694: What is the solution of 5 = 17x^2 - 200x ?
A. 1 real number
B. 2 complex numbers that are conjugates
C. 2 real unequal numbers
D. 0
E. none of these
Click here to see answer by TimothyLamb(4379)

Question 936713: Find a number whose square is 168 greater than 2 times the number
Click here to see answer by TimothyLamb(4379)

Question 936794: I feel like a dumb parent as I cant help my child with this. please help.
Cell Company offers a single line plan for $50. they wan to offer a family plan for 2 lines or more under the same plan. doing so you will decrease the charges per line by $5 each, (the costs per line would decrease for all lines, not just for the lines beyond the first 2.
1. What is the costs per line?
2. If you have five lines under the same family plan what will the total costs be.
3. if you have 8 lines under the same family plan what will be the total costs.
4. what would be the factored from and the general form for the total costs of the family plan as a function of the number of lines beyond 2
Click here to see answer by ankor@dixie-net.com(22740)

Question 936959: A ball is thrown straight upward from the ground. Its height above the ground in meters after t seconds is given by -4.9t^2+30t+c
1. Find the value for the constant c.
2. Find the values of t that make the height zero and give a practical interpretation of each value.
Click here to see answer by josmiceli(19441)

Question 937010: Please help me factor the equatioin below:
3x^2-2x-40=0
Click here to see answer by ewatrrr(24785)

Question 937016: Please help me factor this problem:
2x^2-x-8
Click here to see answer by Alan3354(69443)

Question 937030: Write and Equation in Slope Intercept Form for the line containing the points (3,-17) and (-4,18)
Click here to see answer by TimothyLamb(4379)

Question 937033: given that y^2+10y+k is a perfect square trinomial, find the value of k.
Click here to see answer by josgarithmetic(39614)

Question 937033: given that y^2+10y+k is a perfect square trinomial, find the value of k.
Click here to see answer by MathLover1(20849)

Question 937042: A rectangular picture frame measures 30cm by 40cm. A new frame is to be made by increasing each side length by the same amount. The resulting enclosed area is to be 1656cm^2.Find the dimensions of the new picture frame.
Click here to see answer by josgarithmetic(39614)

Question 937073: Emily Factored 16x^2-36 as (4x-6)^2

Was she correct? EXPLAIN
Click here to see answer by AnlytcPhil(1806)

Question 937091: Solve for X
7x-22=3x+18
Click here to see answer by EdenWolf(517)

Question 937093: Fine the slope of the line containing the points (1,2) and (2,6)
Click here to see answer by TimothyLamb(4379)

Question 937171: Express the equation y=2x+3 in the standard form and find two solutions. Is (2,3) its solution?
Click here to see answer by srinivas.g(540)

Question 937169: 4(X+1)^2=64
Click here to see answer by srinivas.g(540)

Question 937169: 4(X+1)^2=64
Click here to see answer by MathLover1(20849)

Question 937216: There were for times as many boys in one school as in another.If there were another 17 boys between the two schoold the total in the two schools would be 92 .how many boys are in the larger school
Click here to see answer by stanbon(75887)

Question 937297: If the difference of the roots of 2xx-6x+c=0 is 5, find the roots and the value of c.
Click here to see answer by TimothyLamb(4379)

Question 937693: solve for x:
7x^2 - 21x - 3 = 0
Click here to see answer by stanbon(75887)

Question 937693: solve for x:
7x^2 - 21x - 3 = 0
Click here to see answer by TimothyLamb(4379)

Question 937693: solve for x:
7x^2 - 21x - 3 = 0
Click here to see answer by josgarithmetic(39614)

Question 937884: (X-1)(4x-8)..find vertex and x intercept
Click here to see answer by josgarithmetic(39614)

Question 937918: Find three consecutive positive odd integers such that the product of the first two is eight more than five times the third.
Click here to see answer by ankor@dixie-net.com(22740)

Question 937920: A 150 minute river cruise goes 14km upstream and then back again. The river has a current of 3km an hour going downstream. What is the boat's speed in still water and how long was the upstream journey in minutes?
Click here to see answer by mananth(16946)

Question 938087: if the digits 6,5,4,3,2,1 are written in that same order over and over again, what will be the 4000th digit
Click here to see answer by ewatrrr(24785)

Question 938087: if the digits 6,5,4,3,2,1 are written in that same order over and over again, what will be the 4000th digit
Click here to see answer by Edwin McCravy(20054)

Question 938081: If the digits 6,5,4,3,2,1 are written in that same order over and over again, what will be the 345th digit?
Click here to see answer by ewatrrr(24785)

Question 938107: a diagonal divides a square into two triangles each of which an area of 18 square centimeters. what is the perimeter of the square in centimeters
Click here to see answer by ewatrrr(24785)

Question 938104: find the value of 3x if
x/2 + 75 = 2x
Click here to see answer by Stitch(470)

Question 938086: a toy museum has a collection of bicycles and tricycles. together they have 36 pedals and 43 wheels. how many tricycles does the museum have
Click here to see answer by Stitch(470)

Question 938063: A trader bought some paraffin for $500. He paid $x for each litre of paraffin.
a) Find, in terms of x, an expression for the number of litres he bought.
Answer: (500/x)l of paraffin
b) Due to a leak, he lost 3 litres of paraffin. He sold the remainder of the paraffin for $1 per litre more than he paid for it. Write down and expression, in terms of x, for the sum of money he received.
Click here to see answer by josmiceli(19441)

Question 938413: Find all values of
h
for which the quadratic equation has two real solutions.
2[[x]^[2]]-7x-h=0
Click here to see answer by Fombitz(32388)

Question 938424: If y= x squared plus 8, which statement represents a correct value of x?

Click here to see answer by ewatrrr(24785)

Question 938424: If y= x squared plus 8, which statement represents a correct value of x?

Click here to see answer by MathLover1(20849)

Question 938433: what does x equal when 16x-7=8x+17
Click here to see answer by ewatrrr(24785)

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