Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 494932: 1/2 times y divided by 3 equals 2
how do i figure out what y is
Click here to see answer by ptaylor(2198)

Question 494708: if a square have the sides x+4, and a diagonal line of x+8 what is the value of x?(how would you set that problem up)
Click here to see answer by ankor@dixie-net.com(22740)

Question 495040: Really need help on this please?
Multiply
-x � 1
by
-4x2 � 2x + 2
Click here to see answer by rfer(16322)

Question 494692: 6(x+4)=3x-2

Click here to see answer by IFY(62)

Question 494993: 5[-2+7(-5+8)]
Click here to see answer by IFY(62)

Question 495081: In chemistry 11, the following question was given: Use the accepted ratio (Mass of Magnesium oxide/ mass of magnesium = 1.65) to find the mass of magnesium that would be needed to combine with 16.0 grams of oxygen.
The equation would be as follows: x+16/x=1.65
According to my teacher, the answer should be 24.6 grams. I am unsure as to how to come to that answer. Any help would be greatly appreciated, thank you.
Click here to see answer by scott8148(6628)

Question 495084: write an algebraic expression that represents how many segments can be drawn between n points
Click here to see answer by stanbon(75887)

Question 495084: write an algebraic expression that represents how many segments can be drawn between n points
Click here to see answer by scott8148(6628)

Question 495135: How doyou go about solving the problem;
R=325-280e^-0.005t
This pertains to a roast. The questions are
1) What is the temp of the fridge?
2) What is the temp of the roast after 30 min?
Click here to see answer by stanbon(75887)

Question 495226: Hi I have to write two equations using two integers between -12 and 12. I have chosen -3 and 2 as my numbers. How do I write the equations? Please advise.
Click here to see answer by Theo(13342)

Question 495225: the multiplicative inverse of -1 is?
Click here to see answer by stanbon(75887)

Question 495340: 7x36=rx14?
Click here to see answer by stanbon(75887)

Question 495348: 12 + d = 12_____
This is my attempt to solve the problem but the answer is not on the answer key..
12-12=0 so d=0
Click here to see answer by Alan3354(69443)

Question 495383: 9x16=wx12
my worksheet says its wrong but this it what i got...
9x16=144
144x12=1728
w=1,728
Click here to see answer by Alan3354(69443)

Question 495391: 5y=1000

my worksheet says it wrong, but this what i got....
5/1000=200
y=200
Click here to see answer by Alan3354(69443)

Question 495396: 2k=100
this is how i worked the problem out...is it right?
2/100=50
50x2=100
k=100
Click here to see answer by Alan3354(69443)

Question 495411: Solve the following equation:
x/5-x/3=3/2
Click here to see answer by stanbon(75887)

Question 495754: A theater has a seating capacity of 753 and charges $3 for children, $5 for students, and $7 for adults. At a certain screening with full attendance, there were half as many adults as children and students combined. The receipts totaled $4051. How many children attended the show?

So here's what I have...
x= children, $3
y= students, $5
z= adults, $7
x + y + z = 753
3x + 5y + 7z = 4051
now all i need is a third equation that represents "there were half as many adults as children and students combined"
I was thinking maybe it would be x + y = .5z
so then to get all the variables on the left side would it be x + y -.5z = 0
I can solve the equation once I have all three equations, with the variables all to one side of the equals sign, but i'm not sure how to write the equation.
Also, how would I write the equation for "x is to be twice the sum of y and z"
Click here to see answer by stanbon(75887)

Question 495890: Simplify:
6 times(7 plus 3) minus 3+3 times (12 divided by 2)
Click here to see answer by rfer(16322)

Question 496313: Hello, I'm having problems with this equation:
What does the negative symbol represent if there is no number beside it? (The first one) I'm thinking it represents 1 or 0. Please help! :)

Click here to see answer by Alan3354(69443)

Question 496435: What equation can show how many miles Earth travels?
Click here to see answer by Alan3354(69443)

Question 496609: Have no idea how to do it?
Click here to see answer by Earlsdon(6294)

Question 496646: Can you please help me by showing me how to solve the following. It says: Write the expression in the standard form a + bi. The problem is i^14. Thanks much!
Click here to see answer by Edwin McCravy(20054)

Question 496782: Suppose that a plumbing repair bill, not including tax, was $118. This included $22 for parts and an amount for 6 hours of labor. Find the hourly rate that was charged for labor.

Click here to see answer by nerdybill(7384)

Question 496952: what is 6m=48
Click here to see answer by Alan3354(69443)

Question 496961: What is a batty number? And what are four example's of batty numbers?
Click here to see answer by richard1234(7193)

Question 497038: If xyz=20, find the value of (6z)(x/2)(12y)
Click here to see answer by solver91311(24713)

Question 497175: |4x+9|+3=11
Need to know the correct steps. Thank You
Click here to see answer by solver91311(24713)

Question 497680: the sum of two times a number and 5 is 11

Click here to see answer by solver91311(24713)

Question 497690: Im having a hard time trying to figure this eqauation out.
A = 1/2h(b1 + b2)
Solve for h(area of a trapezoid)
Click here to see answer by Alan3354(69443)

Question 497778: What Is X/5 - 3=7 ?
Click here to see answer by Alan3354(69443)

Question 497772: Solve the equation 2x+3=11 using mental math. Explain the reasoning you used to find the solution.
Click here to see answer by Alan3354(69443)

Question 497746: how do i solve this math problem.
3x + 6= x+12
do i figure it out like this
3x+6=x+12
3x 3x
+6=3+12
+6=15
x=15/6
x=2.5
Click here to see answer by Alan3354(69443)

Question 497810: i have to solve an equation with variables and explain what is wrong with the incorrect answer
incorrect problem 1
f-132=11; f=153
Click here to see answer by Alan3354(69443)

Question 498211: Simplify
(2b^4c^4)^2 x (4b^-3a^6)^-6
Click here to see answer by dianne55(1)

Question 498286: Can you show me how to solve: Find the real solutions of the equation by factoring. 2x^4 - 18x^2 =0
Click here to see answer by josmiceli(19441)

Question 498361: What is the answer to the following equation?
-42/-6
Click here to see answer by KatieMose(5)

Question 498663: I need some help solving 1/2x-2=3
Click here to see answer by rfer(16322)

Question 498873: I can't figure out how to set up this equation the find all three sides. The Perimeter of a triangle is 7ft. The longest side of a triangle measures 20 in more than the shortest side. The middle side is 2 times the measure of the shortest side. Find the lengths of the three sides in inches.
Click here to see answer by mananth(16946)

Question 498892: what does a = in this
2a+5=a+9
Click here to see answer by texttutoring(324)

Question 499076: Separate 150 into two parts such that one part is two-thirds the other part.

Please include work. THANK YOU!
Click here to see answer by rfer(16322)

Question 499133: One phone company charges $0.29 per minute for long-distance phone calls. A second company charges only $0.26 per minute for long-distance calls, but adds a monthly fee of $2.97. Find the number of minutes of long-distance calling for which the total bill from either company would be the same. Please round your answers to the nearest hundredth if necessary.
Click here to see answer by mananth(16946)

Question 499131: How many gallons of 65% antifreeze solution and a 35% antifreeze solution must be mixed to obtain 15 gallons of 53% antifreeze solution?
Click here to see answer by mananth(16946)

Question 499196: "solve:4w-3w+3=-4+7"
Click here to see answer by Flannery(124)

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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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, 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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, 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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