Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 113739: Find the unit rate.
5. 28 wins/4 seasons
Any help with this equation would be Greatly appreciated.

Click here to see answer by stanbon(75887)

Question 113752: One more today to check please. Thanks so much.
Find the reciprocal of (-1/2)(6/3)(9) I have -9 but am not real sure about this one. Than you much for your time and help.
Click here to see answer by stanbon(75887)

Question 113736: Order the ratios from least to greatest.
2. 5; 16, 3/8, 2 to 6, 4/15, 12 :40
Any help with would be Greatly appreciated.
Click here to see answer by MathLover1(20849)

Question 113741: Wirte the equivalent rate.
6. 1 km/1 h = ?m/ 1h
Any help with this equation would be Greatly appreciated.
Click here to see answer by josmiceli(19441)

Question 113738: Find the unit rate.

4. 85 m/5 sec
Any help with this equation would be Greatly appreciated.

Click here to see answer by checkley71(8403)

Question 113879: A contractor mixed two batches of concrete consisting of 18% and 22% cement to obtain 4,500 kilos of concrete consisting of 21% cement. How much of each batch concrete was used?
Click here to see answer by Edwin McCravy(20055)

Question 113878: How many grams of pure silver must be mixed with 450grams of an alloy that is 10% copper in order to produce a sterling silver that is 7.5% copper?
Click here to see answer by Edwin McCravy(20055)

Question 113907: x+58=67
Click here to see answer by jim_thompson5910(35256)

Question 113908: 7x=84
Click here to see answer by jim_thompson5910(35256)

Question 113909: 4x-40=8
Click here to see answer by jim_thompson5910(35256)

Question 113910: x-2
Click here to see answer by amylouise93(2)

Question 113915: c + 20 = 55 - 4c
Click here to see answer by jim_thompson5910(35256)

Question 113914: 3/2x - 14 = 16
Click here to see answer by jim_thompson5910(35256)

Question 113916: 2d + 36 = -3d - 54
Click here to see answer by jim_thompson5910(35256)

Question 113896: The area of a large puddle is evaporating at the rate 25% each hour. At 12:00 noon the diameter of the puddle was 3.02 meters.
A. Complete the table below.( hint: if 25% evaporates in 1 hour, how much of the puddle remains?)
Hours after 12:00 noon 0 1 2 3
Area of puddle (cm2)
B. Write an equation for the area of the puddle in terms of the number of hours after 12:00 noon.
C. How large is the puddle at midnight?
D. Predict when the puddle is less than 100 square centimeters.
Click here to see answer by josmiceli(19441)

Question 113944: 12(y+5)=13y=2
Click here to see answer by jim_thompson5910(35256)

Question 113935: Solve. 4x � 0.92 = 3(x � 0.04)
Click here to see answer by jim_thompson5910(35256)

Question 113957: Write in standard notation.
8.129 X 10 -6

Click here to see answer by checkley71(8403)

Question 113957: Write in standard notation.
8.129 X 10 -6

Click here to see answer by MathLover1(20849)

Question 113385: Add or subtract. Write the answer in lowest terms.
x
over
x-4
plus
8
over
x+4
minus
32
over
x^2-16
Click here to see answer by ankor@dixie-net.com(22740)

Question 113877: Ana is 24 years older than twice the age of her younger sister. In ten years, their combined ages will be 110 years. How old are they now?
Click here to see answer by ankor@dixie-net.com(22740)

Question 114110: Evaluate the following expressions.
!-27 + 14!
There is a straight line on both the begining and the end instead of an exclamation mark
Click here to see answer by stanbon(75887)

Question 114104: 1/3 + (-5/6) + (-1/2) OK I have no idea about these at all. The parenthesis are actually "longer" than a normal parenthesis. I have read all about these and nothing is sinking in for some reason, can someone help me please?
Click here to see answer by stanbon(75887)

Question 114119: PLEASE HELP ME SOLVE THIS WRITE EACH EQUATION IN STANDARD FORM
Click here to see answer by stanbon(75887)

Question 114123: Business and finance. Jean deposited a check for $625, wrote two for $68.74 and
$29.95 and used her debit card to pay for a purchase of $57.65. How has her
account balance changed?
This is what I got, is this correct? I subtracted all the checks and purchases from the $625, right? I hope?!!
$399.92
Click here to see answer by edjones(8007)

Question 114102: 7 + (-9) + (-5) + 6
I need help with this one please. Is this where i do what is in the parenthesis first? Then what? Help!!
Click here to see answer by edjones(8007)

Question 114129: A football team is planning a banquet. It offers 2 types of meals. The first one is a turkey plate for $8.00 the second is a roast beef plate for $12.00. The total budget is $980.00 for 100 people. X is the turkey and Y is the roast.
X + Y = 100
8
X +12Y =980
a) solve the system of equations by elimination.
b) How many turkey plates are sold?
c) How many roast beef plates are sold?
Click here to see answer by bucky(2189)

Question 114192: Sove the porportion.
9. a/5 = 27/45
Any help with this equation would be Greatly appreciated.
Click here to see answer by stanbon(75887)

Question 114178: Order the ratios from least to greatest
5:16, 3/8 , 2 to 6, 4/15, 12:40
Any help with this equation would be Greatly appreciated.
Click here to see answer by stanbon(75887)

Question 114194: Solve the equation.
7(y + -7) = 9y -49

Click here to see answer by MathLover1(20849)

Question 114193: Sove the porportion.
10. x/28 = 56/14
Any help with this equation would be Greatly appreciated.
Click here to see answer by MathLover1(20849)

Question 114193: Sove the porportion.
10. x/28 = 56/14
Any help with this equation would be Greatly appreciated.
Click here to see answer by stanbon(75887)

Question 114191: Write the equivalent rate.
8. 72 ft/4 sec = ? yd/ 1 sec
Any help with this equation would be Greatly appreciated.
Click here to see answer by stanbon(75887)

Question 114191: Write the equivalent rate.
8. 72 ft/4 sec = ? yd/ 1 sec
Any help with this equation would be Greatly appreciated.
Click here to see answer by MathLover1(20849)

Question 114188: Write the equivalent rate.
7. 40 mi/1 min = ? mi/1h
Any help with this equation would be Greatly appreciated.
Click here to see answer by jim_thompson5910(35256)

Question 114188: Write the equivalent rate.
7. 40 mi/1 min = ? mi/1h
Any help with this equation would be Greatly appreciated.
Click here to see answer by stanbon(75887)

Question 114269: 7X over 9 plus 3 equals one-eighth.
Click here to see answer by stanbon(75887)

Question 114260: Hello out there,I need some help with some problems,the first one is,Solve 6/x+2=2/x-4.The next one is,Solve 3/x+4-1/x=1/x.The third one is,Solve x/5=x+4/9.And the last one is,Solve 1/2x+1/x=3/8,thanks to whoever can help.
Click here to see answer by solver91311(24713)

Question 114398: (-9)(5)
________
-3
This is supposed to be a fraction and I have no idea how to do this. Can someone please help.
Click here to see answer by stanbon(75887)

Question 114401: The sum of two areas of two circles is 128(pie)ft^2. The difference of the circumferences is 8(pie)ft. Find the radius of each circle.
Click here to see answer by stanbon(75887)

Question 114423: 1/3x+2=1 I have been working the problem but I don't understand
Click here to see answer by jim_thompson5910(35256)

Question 114426: 16x-9x=16.1
Click here to see answer by jim_thompson5910(35256)

Question 114428: 4-7x=18
Click here to see answer by jim_thompson5910(35256)

Question 114427: 1.3x+2.8x=12.3
Click here to see answer by jim_thompson5910(35256)

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, 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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