Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 616566: Two taps A and B fill a swimming pool together in two hours. Alone, it takes tap A three hours less than B to fill the same pool. How many hours does it take each tap to fill the pool separately?
Click here to see answer by richwmiller(17219)

Question 616559: Solve the system of equations by elimination
5x + 2y= 11
=10x - 2y= -26
Click here to see answer by Alan3354(69443)

Question 616554: Solve the system of equations by elimination.
x- 8y=37
3x + 8y= -17
Click here to see answer by Alan3354(69443)

Question 616548: Solve:
-0.3(x-7)+x=0.5(3-x)
I tried to multiply all the terms by 100 and solve the equation and the answer I got was x=2.86 I rounded up
Click here to see answer by Alan3354(69443)

Question 616571: 6x + 32 = 4x + 39
Click here to see answer by ewatrrr(24785)

Question 616495: a plane traveled 1078miles to Abuja and back. the tip there was with the wind. it took 7 hours. the way back was into the wind. the trip back took 11 hours. find the speed of the plane in still air and the speed of the wind.
please use a chart
Click here to see answer by Alan3354(69443)

Question 616617: Give the values of A,B,C needed to write the equations general form.
(5+X)(5-X)=7
possible answers
A=1, B=0, C=-18
A=25, b=0, C=-1
A=1, B=0, C=25
Click here to see answer by solver91311(24713)

Question 616753: how do you factor this quadratic equation? i keep trying but its not right.
12x^2+13x-4=0

Click here to see answer by scott8148(6628)

Question 616722: x^40 = 25. How do you solve for x step by step?
Click here to see answer by Alan3354(69443)

Question 616792: Two times a number equals 8.
How do you write this problem?
What is the answer
Click here to see answer by dragonwalker(73)

Question 616921: If a, b, and c are numbers such that a/b = 3 and b/c = 7, then a+b/b+c is equal to what?
Click here to see answer by ewatrrr(24785)

Question 617046: The function below shows the height, in feet, above the ground of a model rocket t seconds after it is launched off a platform.
h(t)= -16t^2+128t+5
How high off the ground does the rocket start?
When does the rocket reach its highest point?
How high is that?
How long does the rocket stay in the air?
Click here to see answer by lwsshak3(11628)

Question 617096: What is 6x + 5 = 13 + 2x
Click here to see answer by Alan3354(69443)

Question 617096: What is 6x + 5 = 13 + 2x
Click here to see answer by ewatrrr(24785)

Question 617277: Use the formula d=rt to find the value of the missing variable
D=110feet t=22 seconds

Click here to see answer by stanbon(75887)

Question 617274: Perform the indicated operation and, if possible, simplify. If a quotient is undefined, state this.
(- 2/7)(5/-8)
Just having a hard time understanding how to perform this problem
Click here to see answer by stanbon(75887)

Question 617273: Rob's tractor is just as fast as Lucy's. It takes Rob 1 hour(s) more than it takes Lucy to drive to town. If Rob is 56 miles from town and Lucy is 42 miles from town, how long does it take Lucy to drive to town?
How long does it tazke Lucy to drive to town? __ hours.
Click here to see answer by stanbon(75887)

Question 617280: The number N of state and federal inmates in millions during year x, where x > 2002 can be approximated by the following formula
N=0.05X-98.50
Determine the year in which there were 1.8 million inmates.

Click here to see answer by stanbon(75887)

Question 617324: please explain how I get the answer to 1/2 multiplied by -10 thx
Click here to see answer by scott8148(6628)

Question 617389: Could someone please walk me through how to solve this problem?

Use the 4-step process to solve:
The ratio of Jennifer's money to Rachel's money is 11:7. If Jennifer gives Rachel $20.00, they will have the same amount. How much did they have to begin with?
Click here to see answer by Earlsdon(6294)

Question 617542: I am struggling with having to rearrange formula to make x the subject. For example y=2(x+1)
Also how do I solve the following equations to find a numerical value for x
example 2x+3=x+8 or 4(x+2)=20
Thankyou
Click here to see answer by Greenfinch(383)

Question 617636: What does x equal in this equation?
x/3=2/5-1
Click here to see answer by solver91311(24713)

Question 617647: Where is the fractional expression (x-2)/x(x+3) undefined? Thanks
Click here to see answer by solver91311(24713)

Question 617643: Where is the fractional expression (x-2)/x(x+3) equal to 0? Thanks for your help.
Click here to see answer by scott8148(6628)

Question 617696: Write each English phrase as an algebraic expression. Let x represent the number.
a) The difference of half of a number and 7
b) Two more than the quotient of a number and 9

What quantity of 80 percent acid solution must be mixed with a 25 percent solution to produce 1056 ml of a 50 percent solution?

Use factoring to solve the polynomial equation:
a. (x+2)^2-3(x+3)=3-x
b. x^3-2x^2-9x+18=0

After robbing a bank in Dodge City, a robber gallops off at 13 mi/h. 20 minutes later, the Marshall leaves to pursue the robber at 16 mi/h. How long (in hours) does it take the Marshall to catch up to the robber?

Click here to see answer by solver91311(24713)

Question 617708: Hi, I just need to make sure I am doing these problems correctly. Could someone please help?
13 + 30 divided by 5 - 5
Would the answer be 14?
Click here to see answer by Theo(13342)

Question 617723: Could someone please help me with this one?
If 3n - 5n - 24 = 8, then n =
Click here to see answer by blwinbbbles(106)

Question 617723: Could someone please help me with this one?
If 3n - 5n - 24 = 8, then n =
Click here to see answer by MathStudent15(9)

Question 617762: (x+2)^2+28=0 solve using square root procedure
Click here to see answer by stanbon(75887)

Question 617757: F=Gm1m2/d^2; solve for m2
Click here to see answer by stanbon(75887)

Question 617784: This is actually a word problem. Please help me solve this equation and go through step by step how to solve it if I have another question: A medium orange has 70 calories. This is 10 calories less than one fourth of the calories in a Sugar Krunchy. How many calories are in a sugar Krunchy. Sorry I have this in an exam tomorrow.
Click here to see answer by Theo(13342)

Question 617799: -3/(x+5) - -2/(x+4) + (-1-3)/(x^2+9x+20)=A/B
A=
B=

(x^2-(9x+5)/(x^2+1x+6) + (3x^2-6-6x)/(-6-1x-x^2)=A/B
A=
B=

Solve (x-1)/9 greater than or equal to (x-5)/15+5/45

Solve the equation 1/(x+2)-1/(x+3)=1/2

The selling price of a textbook is $150.00. If the markup is 20% of the bookstore's cost, what is the bookstore's cost of the textbook?
a) Write an equation to model the problem. Use x to represent the number.
Answer:
b) Solve the equation to find the bookstore's cost. (Note: Your answer should be in the form $ddd.cc.)
Answer:

Click here to see answer by solver91311(24713)

Question 617814:
What quantity of 80 percent acid solution must be mixed with a 25 percent solution to produce 1056 ml of a 50 percent solution?

Click here to see answer by Alan3354(69443)

Question 617845: 2r+18/8=2r-6/2
Click here to see answer by jim_thompson5910(35256)

Question 617823: Factor completely 2x^2 � 20x -50

Click here to see answer by richwmiller(17219)

Question 617825:
Use factoring to solve the polynomial equation 2x^2=6-4x

Click here to see answer by IFY(62)

Question 617950: 1). Choose the location of the point (-15, 20)
a) quadrant I b) quadrant II
c) quadrant III d) quadrant IV
2). choose the location of the point (0, 6)
a) negative x-axis b) negative y-axis
c) positive y-axis d) positive-x-axis
Click here to see answer by lynnlo(4176)

Question 618018: 2x^2 - 6x + 2 = 0
Click here to see answer by nerdybill(7384)

Question 618190: how do I determine whether x=13 is a solution of the ordered pair (13,5)
Click here to see answer by jim_thompson5910(35256)

Question 618195: Hi,
Im studying really hard for my E.O.C for the end of the year in Algbra we have it on friday, the thing is i am realy not good with word problems. Do you think you could help me get started on this i dont know which algebra expression to use???. if you could get back to me as soon as possable that would be great! :)
Please help.
Problem: Only Chocolate and vanilla ice cream cones are sold at an ice cream store. In one day, the number of chocolate cones sold was 1 more than 4 times the number of vanilla cones sold. A toatle of 121 cones were sold that day.
Let c= the number of chocolate cones sold
Let v= the number of vanilla cones sold
- Write equations to determine the number of chocolate cones that day.
- Use the equations to determine the number of chocolate cones sold that day.
Show your work using words,numbers, and/or diagrams.
Click here to see answer by KMST(5328)

Question 618256: 6x+8=40
Click here to see answer by jim_thompson5910(35256)

Question 618274: Determine an equation for the line perpendicular to 5x+9y=-8 and passing through the point (-10,-9).
Click here to see answer by lwsshak3(11628)

Question 618289: how do i factor this equation 24m to the second power minus 105m minus 75?
Click here to see answer by vleith(2983)

Question 618395: (-23)/5+-10
Click here to see answer by ewatrrr(24785)

Question 618466: Solve by Elimination method
5a+3b=5
-5a+b=15
Please help me solve these equations with the elimination method.
Click here to see answer by Alan3354(69443)

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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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, 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