Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 993273: For the problem c=b-bx, how would you solve for x?
Click here to see answer by rothauserc(4718)

Question 993279: an equation for twice an interger is 42 less than -102 .
Click here to see answer by EdenWolf(517)

Question 993356: what number must be added to the numerator and subtracted from the denominator of the fraction 17/32 to make a fraction equal to 3/4.
Click here to see answer by stanbon(75887)

Question 993271: A store is offering a discount of 25% on a CD. There is a sales tax of 6%. Using a composition of functions represent the situation where the discount is taken first and then the sale tax is applied after.

Click here to see answer by macston(5194)

Question 993281: XY(5+z-X)
60
How do u solve this? HELP PLEASE!
Click here to see answer by Fombitz(32388)

Question 993265: 3y2+10y
_______
2y
Click here to see answer by macston(5194)

Question 993433: Please help me solve this. I have been struggling for hours!
1/x+1/(x-1)=2/(x^2-2x)
Click here to see answer by addingup(3677)

Question 993433: Please help me solve this. I have been struggling for hours!
1/x+1/(x-1)=2/(x^2-2x)
Click here to see answer by MathTherapy(10551)

Question 993441: The length is 4 units less than 3 times the width. The perimeter is 22 units more than twice the width. Find the length and width
Click here to see answer by solver91311(24713)

Question 993440: The length is 12 units more than then the width. perimeter is 7 times the width. find the length and width
Click here to see answer by solver91311(24713)

Question 993484: 2(2)^2-3(2)(-3)-2(-3)^2=
Click here to see answer by rfer(16322)

Question 993500: Supposef(x)=3x�4and g(x)=|x|+3.
1) f(1/3) + g(-2)
2) f(1)/g(1)
I need the work on how to do this

Click here to see answer by MathLover1(20849)

Question 993500: Supposef(x)=3x�4and g(x)=|x|+3.
1) f(1/3) + g(-2)
2) f(1)/g(1)
I need the work on how to do this

Click here to see answer by solver91311(24713)

Question 993195: 5-7+2x10=

I don't understand why the answer is 18 instead of 22
Can you explain why ?
I need to know how this algebra expression is simplified .
Click here to see answer by farohw(175)

Question 993716: If x= 20 cm, calculate the area include units

Click here to see answer by solver91311(24713)

Question 993720: Hi! I really need some help with this problem I've been stuck on.
The length of a rectangle is 8 in. more than its width. The perimeter is 52 in.

What is the length of the rectangle?
Click here to see answer by solver91311(24713)

Question 993723: Solve
-3X +12+ 7X = 8+ 5X +4 -X
Click here to see answer by Cromlix(4381)

Question 993756: 12 - 4/5 (x + 15) =4
Click here to see answer by Alan3354(69443)

Question 993782: Are y=-1/5x+1 & 2x+10y=3 parallel, perpendicular or neither? I tried to do it on paper but its not making sense
Click here to see answer by rfer(16322)

Question 993749: Find point P(x,y) on line y=2x-1 so that its distance from point Q(4,3) is 2
Click here to see answer by Theo(13342)

Question 993867: Solve:x-3y=0 & x+y=16

Click here to see answer by Alan3354(69443)

Question 993870: What does 3z to the -2 power equal?
Click here to see answer by Alan3354(69443)

Question 993899: 4(3x-2)=16
Click here to see answer by ikleyn(52776)

Question 993911: Hi, please help me find x in this equation:
Click here to see answer by ikleyn(52776)

Question 993939: If x + .07x = 71.75, what does x equal?
Click here to see answer by Alan3354(69443)

Question 993907: A rectangular room is 1.8 times as long as it is wide, and its perimeter is 27 meters. Find the dimension of the room.

Click here to see answer by fractalier(6550)

Question 993904: Two cyclists, 45 miles apart, start riding toward each other at the same time. One cycles 2 times as fast as the other. If they meet 3 hours later, what is the speed (in mi/h) of the faster cyclist?
Click here to see answer by fractalier(6550)

Question 993901: Your weekly paycheck is 25 percent less than your coworker's. Your two paychecks total 850. Find the amount of each paycheck.

Click here to see answer by fractalier(6550)

Question 993903: One positive number is one-fifth of another number. The difference between the two numbers is 136, find the numbers.
The two numbers in increasing order are _____ and _________

Click here to see answer by fractalier(6550)

Question 993956: x/2-y/5=1
Click here to see answer by Alan3354(69443)

Question 993902: A manufacturer has 2900 units in stock. The product is now selling at $8 per unit. Next month the unit price will increase by $0.50. The manufacturer wants the total revenue received from the sale of the 2900 units to be no less than $23750. What is the number of units that can be sold this month?
At most _______ units
Click here to see answer by Theo(13342)

Question 993998: show that the quadratic equation x^2+2px＋p(p－1)＝0 has two unequal real roots for any positive values of p.
Click here to see answer by josgarithmetic(39616)

Question 993997: 3x + 4 5x+6
_____ - ____
2x 3x

(3x+4 / 2x) - (5x+6 / 3x)
Click here to see answer by stanbon(75887)

Question 994035: The Booster Club has a goal of raising at least $300. The Club has already raised $75. The Booster Club is sponsoring a pancake breakfast and charging $5.00 per ticket.
What inequality would represent the number of tickets (t) that the Booster Club must sell to meet its goal?
I have seen this question and similar posted - providing the number of tickets that need to be sold does NOT provide a statment of inequality and THAT is the answer to the question - a statement of inequality. it should read something as follows (the variable t should be included) is equal to or greater than 300.
Click here to see answer by josgarithmetic(39616)

Question 994051: 14 is added to 2/3 of a certain number the results is 5/4 times the original number.find the number

Click here to see answer by rfer(16322)

Question 994087: The equation 3w^2+5w represents the area of a rectangle where w is width. What is the length in terms of w?
Click here to see answer by rothauserc(4718)

Question 994089: 1/2x+6=10

Click here to see answer by rfer(16322)

Question 994110: write an equation that has variables on both sides and has a solution of -3

Click here to see answer by ikleyn(52776)

Question 994056: Find the difference quotient and simplify for the following function: f(x)=-10x^2 + 10x +8. Thanks for your help.
Click here to see answer by josgarithmetic(39616)

Question 994207: What is the solution to 5x+9=x-23 ?
Click here to see answer by stanbon(75887)

Question 994285: The total profit $P, generated from the production and marketing of n items of a certain product is given by
P = −10800n − 4 n^3 + 600n^2 −122
How many items should be made for maximum profit? What is the maximum profit?
Enter your answers as a list [in square brackets] of the form: [ n, p]
for some number of items n and profit p
This is what I have
P = −10800n − 4 n^3 + 600n^2 −122
P' = -10800 -12n^2 + 1200n
-10800 -12n^2 + 1200n = 0
n = 10, n = 90
But I am not sure what to do from there?
Do I sub them in?
-10800 -12(10)^2 + 1200(10) = 0
-10800 -12(90)^2 + 1200(90) = 0
I'm lost!
Thank you!!
Click here to see answer by MathTherapy(10551)

Question 994373: elimination method for 5x-5y=-5; -5x+2y=-10
Click here to see answer by Alan3354(69443)

Question 994384: A total investment of $9,700is made into two savings accounts. One account yields 9% simple interest and the other 10% simple interest. He earns a total of $935.00interest for the year. How much was invested in the 9% account?
Click here to see answer by Boreal(15235)

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, 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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