Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

Tutors Answer Your Questions about Polynomials-and-rational-expressions (FREE)

Question 169585: 8x^3-27
Click here to see answer by Mathtut(3670)

Question 169565: Solve the problem. The amount of money that Pablo makes in a given week varies directly as the number of hours he works that week. In a week in which he works 38 hours, he makes $589. How much will he make in a week in which he works 46 hours?
Click here to see answer by checkley77(12569)

Question 169564: Given the values of x and y, find an equation of variation in which y varies directly as x.
y = 8, when x = 5
Click here to see answer by Mathtut(3670)

Question 169610: 4/(√6)+3
please simplify radical expression
Click here to see answer by Alan3354(31530)

Question 169566: Solve the problem. The volume V of a gas varies inversely as the pressure P on it. The volume of a gas is 240 cm^3 under a pressure of 23 kg/cm^2. What will be its volume under a pressure of 30 kg/cm^2?
Click here to see answer by jojo14344(1512)

Question 169657: Need help please I don't understand please help thank you
Find p(x) + 4q(x)
p(x) = 4x^4 + 55x^3 - 23x^2 + 13
q(x) = 43x^4 + 14x^2 -12
Click here to see answer by stanbon(57967)

Question 169661: Find the equation of the line through the y-intercept of y= x^4-8x^5-9+8x^2 and the x-intercept of y= 11x-4 .
Write the coefficients in the form of a simple fraction, if it is necessary.
Click here to see answer by Fombitz(13828)

Question 169663: 12/(x^2-4)-3/(x-2)=5/(x+2)
Click here to see answer by stanbon(57967)

Question 169563: Simplify.

Click here to see answer by checkley77(12569)

Question 169668: how do i solve (7a^2-3a+14)+(9a^2+11a)
Click here to see answer by stanbon(57967)

Question 169668: how do i solve (7a^2-3a+14)+(9a^2+11a)
Click here to see answer by checkley77(12569)

Question 169498: Please help!! The formula is ax^2+bx+c, a is not equal to 1.....the problem is 2a^2-32-12a. The solution I get is 2(a^2-16-6a) then I am stuck. Thank you so much for your time
Click here to see answer by Alan3354(31530)

Question 169685: elementary and Intermediate algebra concepts and application Please Please Help!!!
This book is so hard tounderstand .
Find P(-1/2) if
P(x) = 2x^4+x^3+12
Click here to see answer by stanbon(57967)

Question 169694: Find a possible formula for the polynomial if it has zeros at x = -4 and x = 8 , and vertical asymptotes at x = -5 and x =19 . It has a horizontal asymptote of y = -8 .
Enter the numerator and denominator in factored form.
Click here to see answer by stanbon(57967)

Question 169710: Please help thank you thank you very much!!!!!!!
2. Translate the following into a system of equations, then solve it:A customer walks into an electronics store and buys five MP3 players and eight sets of headphones, paying $840. A second customer buys three MP3 players and four sets of headphones, and pays $480. How much does an MP3 player cost? How much does a set of headphones cost?
Click here to see answer by Mathtut(3670)

Question 169721: Could you please help me with this problem??
Click here to see answer by jim_thompson5910(28715)

Question 169736: i would like to know if someone can help me with this problem:
x
----
x-2 (x over x minus 2)
plus
-8
-----
x^2-4 (negative 8 over x to the second power minus 4)
this problem is in a fraction form i hope i was able to explain this problem right.
thank you!
Click here to see answer by edjones(7569)

Question 169679: a) t2/3=4
Click here to see answer by midwood_trail(310)

Question 169800: simplify
(x^2+2x-15/x^2-9)/(x^2+6x+5/x^2+4x+3)
Click here to see answer by jim_thompson5910(28715)

Question 169314: Divide and, if possible, simplify
.
Click here to see answer by Edwin McCravy(8999)

Question 169533: Dividing a polynomial by a monimal
2x^2+4
_______
2x
Thanks!
Click here to see answer by stanbon(57967)

Question 169709: Explain how to apply elimination in solving a system of equations.
a. Explain how to apply substitution in solving a system of equations.
b. Demonstrate each technique in solving the system
3x + 9y = 12
5x - 4y = 3

Click here to see answer by Edwin McCravy(8999)

Question 169852: please help!!!!
From the given polynomials Identify the polynomials of degree one.

311y - 5 - 43y
Click here to see answer by Alan3354(31530)

Question 169854: I'm so lost please help!!!!!!!
From the goven polynomials Identify the polynomials of degree one.
(11y^2)1/2 + 14
Click here to see answer by Alan3354(31530)

Question 169863: Linear equations and their solutions
From the given polynomials Identify the polynomials of degree one.
10+ (19)1/2x
I just don't understand at all. please help if you can
Thanks inadvance
Click here to see answer by stanbon(57967)

Question 169690: Estimate the one-sided limits for the function:
f(x) = 17 - x/(x-8)^2
lim f(x) when x approaches 8+
and
lim f(x) when x approaches 8-
Click here to see answer by gonzo(654)

Question 169562: For the pair of similar triangles, find the length of the indicated side. In the outer triangle, the shortest side has length 6, and the middle side has length 9. In the inner triangle, the shortest side has length 2, the middle side has length 3, and the longest side has length 4. Find the length, x, of the longest side of the outer triangle.
Click here to see answer by gonzo(654)

Question 169916: I know I already asked for help on similar problems, but this one is sorta really confusing me;
(I should subtract it)
2x^2y-5xy^2+2
- -x^2y+2xy^2+2
-----------------
(it would be sorta embarrassing to write my answer, cause once I over read it, it only made less sense lol)
and maybe someone could help me with this little one as well;
6x+9
- 2x+4
---------
4x+5 < my wrong answer

Click here to see answer by Edwin McCravy(8999)

Question 169915: My teacher is killing me with these Algebra problems =( Could someone maybe help me out with them?
3x+4
+ x-6
--------
3x^2-2 < that was my answer (but is of it is wrong)

2x-1
+ -x+1
--------
2x^2-0 < again my wrong answer

Click here to see answer by checkley77(12569)

Question 169914: My teacher is killing me with these Algebra problems =( Could someone maybe help me out with them?
3x+4
+ x-6
--------
3x^2-2 2x-1
+ -x+1
--------
2x^2-0 < again my wrong answer

Click here to see answer by jim_thompson5910(28715)

Question 169933: The amount of an investment of P dollars for t years at simple rate r is given by A = p + prt
A) Rewrite this formula by factoring ourt the greatest common factor on the right hand side.
B) Find A if $8300 is invested for 3 years at a simple rate of 15%.
Click here to see answer by Earlsdon(6294)

Question 169941: Solve using the substitution method, the elimination method, or the graphing method.
2(x - y) = 3 + x, x = 3y + 4
Click here to see answer by Alan3354(31530)

Question 169945: Multiply and, if possible, simplify

Click here to see answer by Edwin McCravy(8999)

Question 169958: the sum 2/x+1 + 7/x+2 can be expressed in the form ax+b/(x+1)(x+2). what are the values for a and b?
Click here to see answer by Edwin McCravy(8999)

Question 169944: Simplify
3x + 2/15x^2 + 19x + 6
Click here to see answer by Alan3354(31530)

Question 169942: Divide and, if possible, simplify
z^2 + 8z + 16/z^2 + 13z + 36 divided by z^2 + 4z/z^2 + 15z + 54
Click here to see answer by jim_thompson5910(28715)

Question 170021: Factor
Click here to see answer by checkley77(12569)

Question 170010: Please Help. Thank You.
Increasing cube. Each of the three sides of a cube with
sides of x centimeters is increased by a whole number of
centimeters. The new volume in cubic centimeters is
given by
V(X)= x^3 + 10x^2 + 31x + 30.
a) Find V(3).
b) If the new height is x + 2 centimeters, then what are the
new length and width?
c) Find the volume when x =3 by multiplying the length,
width, and height.
Click here to see answer by ankor@dixie-net.com(15746)

Question 170050: Evaluate by factoring first:
Click here to see answer by stanbon(57967)

Question 170077: find the value(s) that can replace the variable in the expression and cause the expression to be undefined.
6x/x+6
Click here to see answer by kaylagnapp(1)

Question 170076: reduce
5x-x^2/x^2-10x+25
Click here to see answer by nerdybill(7008)

Question 170066: SOLVE THE EQUATION
y/4-y/6=1/4
Click here to see answer by Alan3354(31530)

Question 170075: FIND THE LEAST COMON DENOMINATOR AND WRITE EQUIVALENT RATIONAL EXPRESSION WITH THE LCD.
3/a^4b^3,6/a^2b^5
Click here to see answer by stanbon(57967)

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