Questions on Algebra: Equations answered by real tutors!

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Question 239219: x/9=4+6/2
Click here to see answer by College Student(505)

Question 239209: Please help me. I'm having trouble with this problem.
At a given time of day, the ratio of the height of an oject to the length of its shadow is the same for all oject. If a 5ft post casta a shadow of 1.2ft, find the length of the shadow for a 17ft post.
Click here to see answer by josmiceli(19441)

Question 239235: please help me solve this:
6s^2+29s-42
Click here to see answer by scott8148(6628)

Question 239346: Hi my name is Karen Iam taking college math I need help with the following questions.
1.strategy to solve equations linear v-4(-v)=-2(2v-1) , 9-2m/7=19 and ,3(x-0.87)-2x=4.98
2. Solve each equation by eliminating the fraction x/2-x/3=5 ,1k/15+5=1k/6-10
0.5b+3.4=0.2b+12.4, -6x+3= -7-5x, and 3-3(5-x)=0

Click here to see answer by nerdybill(7384)

Question 239377: Use an inequality and the five-step process to solve the problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400-meter dash t years after 1925, for what years will the world records be 48.1 seconds or less? thank you
Click here to see answer by nyc_function(2741)

Question 239375: Solve using the five-step problem-solving process.
Find the length of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width. (P = 2L + 2W)
thanks
Click here to see answer by nyc_function(2741)

Question 239570: Write the missing number for:
? divided by 35 = 3 remainder24
Click here to see answer by checkley77(12844)

Question 239584: At Newfield HS, the sophomore class has 60 more students that the freshman class. The junior class has 50 fewer students than twice the students in the freshman class. The senior class is threww times as large as the freshman class. If there are a total of 1,424 students at NHS, how many students are in the freshman class?
Let __ = the # of freshman
Let __ = the # of sophomores
Let __ = the # of juniors
Let __ = the # of seniors
Click here to see answer by College Student(505)

Question 239588: 7-4(2x-5)3x=-48
Click here to see answer by College Student(505)

Question 239579: write in standard form an equation of the line that passes through the given point and has the given slope.use interger coefficients.
(-2,-1),m=3
also
(6,-1),m=0
Click here to see answer by College Student(505)

Question 239714: HELPPPP!!!
solve each equation below.
the worksheet is titled: double cross.
g. x/2+2x/3=5
t. 5x/6-(3-x)/8=(4x+3)/12
s. 1/3(a+5)=7/2
b. (3k-8)/14+5/7=(k+1)/2

key: / means divide.
Sorry i wish i could find out a way to write the divide sign as it is on the paper i have so it would be easier to understand.
i put some in parentheses to show that that part goes ontop as the numerator.
I am trying to help my little brother with his math and i am stuck on these problems!! PLEASE PLEASE help... he needs it badly!! help us!!
THANK YOU!!!!!!!!!!!!
Click here to see answer by edjones(8007)

Question 239901: factor x^2+7x+12
Click here to see answer by solver91311(24713)

Question 239966: 4(x-7)=48
Click here to see answer by checkley77(12844)

Question 240059: I am having trouble with two equations - solving for variables...

A = P+PRT --------- solve for P
..this one I am not sure where to begin, since there are two P's in the equation. The only thing I can think of is to subtract the RT from both sides (but am not sure if this is correct).
A = 1/2 h (B+b) ------------- solve for b
(having problems trying to type it- but the first part is 1/2 h - 'h' is next to the 1/2)
..do I multiply everything by 1/2?- not sure how to begin/complete the problem.
Click here to see answer by stanbon(75887)

Question 240219: I am having trouble figuring out this equation which is 9x-2x=-42 could you please help me. Thank-you!
Click here to see answer by unlockmath(1688)

Question 240288: Solve using the addition and multiplication principles. thanks
-6r + 3 ≤ -3(4r - 9)
Click here to see answer by solver91311(24713)

Question 240293: Solve the formula for the indicated letter. thanks
P = s1 + s2 + s3 for s3 (Points :2)
Click here to see answer by solver91311(24713)

Question 240283: hello my name is anthony and i need help with this problem cuz i am new at this and so here it is and explain it the best way you can step by step?

5(2x+3)=4(x-1)+1
Click here to see answer by rfer(16322)

Question 240294: A= 1/2h (b1+b2 for b1 Please help,
solve the problem for the indicated letter
Click here to see answer by solver91311(24713)

Question 240294: A= 1/2h (b1+b2 for b1 Please help,
solve the problem for the indicated letter
Click here to see answer by Alan3354(69443)

Question 238567: Solve by the elimination method.
4x-9y=6.5
7y-2x=-4.5
Click here to see answer by Alan3354(69443)

Question 240364: Please help me understand the steps for solving this problem. The value of a two-digit number is twice as large as the sum of its digits. If the digits were reversed, the resulting number would be 9 less than 5 times the original number. Find the original number.
Click here to see answer by scott8148(6628)

Question 240430: what do you do if a minus sign is next to a parenthesis?
Click here to see answer by vleith(2983)

Question 240455: i am doing a problem. here is the equation, x^2+8x i cant find out what this type of problem is called. like is it a ex. parabola?
Click here to see answer by Alan3354(69443)

Question 240443: Solve the equation.
(y - 11) - (y + 6) = 8y

Click here to see answer by checkley77(12844)

Question 240535: Please help me solve by the elimination method
x+3y=16
-x+8y=17
Click here to see answer by solver91311(24713)

Question 240544: Please help me solve using the substitution method
7x+3y=-25
-7x+y=29
Click here to see answer by unlockmath(1688)

Question 240587: Solve and state properties
c) 2(3x-1)-5(2x+3)=4x-7
I know that distributive property has to take place but afterwards I don't know what to do.
thank you

Click here to see answer by rapaljer(4671)

Question 240623: Bruce receives a weekly salart of $350. Hel also recieves a 6% commission on the total dollar volume of all sales he makes. What must his dollar volume be in a week, if he is to make a total of $710.?
Click here to see answer by checkley77(12844)

Question 240686: Please help me out with this problem:
(1/x-4) + (4/4x-4) = 5/4

I don't know what the LCD would be, so I am unable to find the solution(s).
If you could please help me, it would be greatly appreciated!
Click here to see answer by Theo(13342)

Question 240692: John is 13 years less than 3 times as old as his son. Six years ago, he was 14 years more than twice as old as his son was then. How old is John?
Click here to see answer by nyc_function(2741)

Question 240759: 3(x+2)=x-18. What does x equal?
Click here to see answer by edjones(8007)

Question 240799: Write the equation of a circle with center at (-5, 2) and radius 5. Please help.
Click here to see answer by vleith(2983)

Question 240757: Solve for x and y.
4x+9y=365
Click here to see answer by Alan3354(69443)

Question 240788: What is y in this equation 3/2y - y =4 + 1/2?

Click here to see answer by Alan3354(69443)

Question 240848: please help me solve 2/A = 3A/(5A-14)
Click here to see answer by checkley77(12844)

Question 241030: Factor each polynomial completely.
a^4 - ab^3 =
This is what I tried and I am not sure it is correct?
a^2a^2/a^2b^1 = a^2/b^1 I don't think this is the correct formula but I am not sure. Any help would be really appreciated.
Click here to see answer by rapaljer(4671)

Question 241067: How do we solve 2q^3 - 8q^2 - 4950 = 0?
Click here to see answer by vleith(2983)

Question 241107: Factor completely, if a polynomial is prime state this: thank you
2t^2-7t-4
Click here to see answer by vleith(2983)

Question 240985: three times one number plus -7 times another number equals 21
Click here to see answer by ankor@dixie-net.com(22740)

Question 241254: 4(3-m)=5(2m+1)
Click here to see answer by jim_thompson5910(35256)

Question 240367: 3(x-3)=4x-11
Click here to see answer by College Student(505)

Question 241275: (x-1/x)=5 find the value of x2+1/x2=? here i wrote x square not x 2 please note that.Thanks
Click here to see answer by rapaljer(4671)

Question 241344: Multiply. thank you
(xy + 3)(8xy - 2)
Click here to see answer by checkley77(12844)

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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, 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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, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580