Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 803469: multiply out the brackets and simplify 3(x+7)+2x
Click here to see answer by oscargut(2103)

Question 803597:
The volume of a cube is given by V=s^3, where s is the length of a side. Find the length of a side of a cube.
Click here to see answer by Alan3354(69443)

Question 803486: what exactly is the associated property?
and if possible can you give me an example or two?
Click here to see answer by ankor@dixie-net.com(22740)

Question 803733: can you please help me to solve this equation.
2/[3(z-120)]=40
please give me step by step answer to get the value of "Z"
Thanks
Nasir
Click here to see answer by erica65404(394)

Question 803753: Hi I'm struggling with my maths equations. First question is:
Answer these equations by using the substitution method.
y=4x-7
3x+2y=30
Would really appreciate any help.
Click here to see answer by Edwin McCravy(20054)

Question 803755: Please help I'm stuck on a linear equation using the ELIMINATION method.
The question is as follows:
2x+3y =5
4x-y =3
Would appreciate any help.
Click here to see answer by Edwin McCravy(20054)

Question 803758: Please help I'm stuck on a linear equation using the ELIMINATION method.
The question is as follows:
2x+3y =7
3x-2y =4
Would appreciate any help.
Click here to see answer by rothauserc(4718)

Question 803759: Good Evening, I'm struggling with this word problem. Can someone Please help?
A moneybox contains only 20-cent coins and 50-cent coins. If there are 57 coins in the moneybox and their total value is $24.30, how many 20-cent coins and how many 50-cent coins are there?
Click here to see answer by rothauserc(4718)

Question 803974: Can you show me how to solve this equation step by step?
x
- =8
-2
Click here to see answer by Alan3354(69443)

Question 804036: Eight times a number n is 51 more than five times the number.
I need to write an equation to represent the problem.
I've already come up with two, i just need to know which is correct.
Click here to see answer by erica65404(394)

Question 804039: What is an expiation of a line that contains the point (-4,3) and is perpendicular to the graph of x-2y=8
Click here to see answer by stanbon(75887)

Question 804044: -6X = 3X - 48
Could you please help with the above equation
Thank you so much
Click here to see answer by erica65404(394)

Question 804044: -6X = 3X - 48
Could you please help with the above equation
Thank you so much
Click here to see answer by richwmiller(17219)

Question 804037: Sai is on a railroad bridge 3/8 of the way from Helena to Pelham. A train is heading his way at 40 mph. If Sai runs toward the train, he will meet the train head on at the end of the bridge (point H). If he runs away from the train toward Pelham, the train will overtake him at the other end of the bridge (point P). How fast can Sai run?
Click here to see answer by ankor@dixie-net.com(22740)

Question 803594: Write an equation for x 3 6 9 12 y 3.5 5 6.5 8
Click here to see answer by tommyt3rd(5050)

Question 804134: Good Afternoon, I would really appreciate any help possible to turn this equation below that was done in a substitution technique into GRAPHICAL Technique.
y=4x-7
3x+2y=30
Take the second equation:
3x+2y=30
Replace the letter "y" by the right side of the first equation which is
4x-7 placed within parentheses like this: (4x-7)
3x+2(4x-7)=30
Now use the distributive principle
to remove the parentheses.
3x+8x-14=30
Combine the like terms 3x and 8x
and get 11x
11x-14=30
Add 14 to both sides
11x=44
Divide both sides by 11
x=4
That's the answer for x,
But you also need the value for y.
So take the first equation
y=4x-7
And replace x by (4)
y=4(4)-7
y=16-7
y=9
So the solution is: x=4 and y=9
Click here to see answer by josgarithmetic(39616)

Question 804209:
Company B claims that their annual profits follow a radical model, P(x) = 15sqrt(x−1) + 3. Plug 3 in for x and solve.
Click here to see answer by richwmiller(17219)

Question 804231: Company B claims that their annual profits follow a radical model, P(x) = 15sqrt(x − 1) + 3. Plug 3 in for x and solve. Show step by step work.
Click here to see answer by solver91311(24713)

Question 804294: Place parentheses to make the equation 6+12-5*3=27 true.

Click here to see answer by richwmiller(17219)

Question 804294: Place parentheses to make the equation 6+12-5*3=27 true.

Click here to see answer by solver91311(24713)

Question 804315: eight times a number plus 6 less than twice the number is 34.
Click here to see answer by erica65404(394)

Question 804455: Need to write full algabriac steps and solve
46 = c - 49
Thanks

Click here to see answer by erica65404(394)

Question 804486: what is x+5=-7
Click here to see answer by erica65404(394)

Question 804529: 3xr smiplifyed
Click here to see answer by erica65404(394)

Question 804540: The sum of twice a first number and three times a second number is 71. If the second number is subtracted from three times the first number the result is 2. Find the numbers.
Click here to see answer by erica65404(394)

Question 804643: Is this correct?
Convert 30 degrees Celsius to Fahrenheit -
30=5/9(F-32)
30x9/5=F-32
270/5=F-32
54=F-32
54+32=F
86 Degrees =F
Thank you for your help!
Click here to see answer by Alan3354(69443)

Question 804758: what are the steps to adding -27+(-5)+27
what are the steps to multiplying 6*5(1/5)
what are the steps to subtracting 1/4-(8 3/4)
what are the steps to doing 5-2(2 1/2+3)

Click here to see answer by erica65404(394)

Question 804774: hi what is -1/2x=1/16
thank you!!
Click here to see answer by solver91311(24713)

Question 804678: Together a chair, a table, and a lamp cost $562. The chair costs 4 times as much as the lamp, and the table costs $23 less than the chair. Find the cost of the table.
Click here to see answer by erica65404(394)

Question 804775: 46+y=136
Click here to see answer by erica65404(394)

Question 804828: how do I solve 4(2n-5)=3n+10
Click here to see answer by erica65404(394)

Question 804828: how do I solve 4(2n-5)=3n+10
Click here to see answer by Alan3354(69443)

Question 804828: how do I solve 4(2n-5)=3n+10
Click here to see answer by angel.wit.de.halo(6)

Question 804836: What is "n" in the equation: -3+8n : -5
Click here to see answer by angel.wit.de.halo(6)

Question 804952: Two more than 5 times a number is 77. Find the number
Click here to see answer by MathLover1(20849)

Question 804981: Twelve decreased by 8 times a number is 36. Find the number.
Click here to see answer by erica65404(394)

Question 805062: x^2 + 2xy + y^2 - a^2 - 2ab - b^2
Click here to see answer by mananth(16946)

Question 805174: 9. The sum of three times a number and eight is twenty-two. Find the number.
Click here to see answer by richwmiller(17219)

Question 805169: a carpenter is building a rectangular fence for a playground .one side of the play ground is the wall of the bulding 70ft .he plans to use 340ft of fencing mteril.what is the length of play ground if the width is 70ft ?
Click here to see answer by KMST(5328)

Question 805339: What is an equation for the line that passes through the coordinates (2,0) and (0,3)?
Click here to see answer by mananth(16946)

Question 805361: x^2 + 20x + 100 divided by x + 10
Click here to see answer by Alan3354(69443)

Question 805359: Solve the equation: 49y-21√y+2=0
I have tried squaring the equation to remove the √ but I don't think this is right.
Could you help please?
Thanks.
Click here to see answer by Alan3354(69443)

Question 805358: x^4 - y^4 divided by x - y
Click here to see answer by Alan3354(69443)

Question 805364: p^2 - 26p + 48 divided by(p-2)
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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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, 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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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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