Questions on Algebra: Equations answered by real tutors!

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Question 421400: determine whether (-9,-3) is a solution of 8x-3y=-2
is (-9,-3) a solution to the equation?
yes or no
Click here to see answer by stanbon(75887)

Question 421402: solve, then graph
y-2>-14
the solution is {y|y>_}
Click here to see answer by stanbon(75887)

Question 421403: find the slope, if it exists, of the line containing the pair of points.
(7,8) and (9,-7)
a.the slope m=?
b. the slope is undefined
Click here to see answer by stanbon(75887)

Question 421401: use < or> to make the statement true
-3_10??
Click here to see answer by stanbon(75887)

Question 421396: collect like terms
15x+4y-11x-7y
15x+4y-11x-7y=??
Click here to see answer by stanbon(75887)

Question 421408: Find the original price of a pair of shoes if the sales price is $36 after a 20% discount.
Click here to see answer by rfer(16322)

Question 421395: solve
-0.5x<-15
the solution is {x|_}
Click here to see answer by rfer(16322)

Question 421422: How do you simplify -2[3a+(-b)]+3[(-a)+2b)]
Click here to see answer by stanbon(75887)

Question 421430: How do you simplify (-1/4)[24x-(-12y)]
Click here to see answer by algebrahouse.com(1659)

Question 421428: My mom finally gave me the answers because I couldn't get these problems right after numerous attempts. Your solutions will go to her email. I am homeschooled. you said I could ask for solutions to five questions. Here are 5:
((x^2+4x)/(x+3)) ((x^2 � 9)/(x^2 + x � 12)) couldn't get it after 3 tries, the answer is x but I'm not getting the steps to the answer x.

Click here to see answer by algebrahouse.com(1659)

Question 421435: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
25x^2 - 40xy + 16y^2, Again I know the answer is (5x - 4y)^2 but I can't get the steps.
Click here to see answer by mananth(16946)

Question 421438: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
((4x^2 - 16)/(2-x)). the answer is -4(x + 2).
Click here to see answer by mananth(16946)

Question 421437: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
((x+3)/(x+5)) + ((6) / (x^2 +3x -10)); the answer is ((x^2 + x)/ (x^2 + 3x -10))
Click here to see answer by robertb(5830)

Question 421440: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
25x^2 - 40xy + 16y^2, The answer is (5x - 4y)^2 but I can't get the steps.

Click here to see answer by sudhanshu_kmr(1152)

Question 421441: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
((x+3)/(x+5)) + ((6) / (x^2 +3x -10)); the answer is ((x^2 + x)/ (x^2 + 3x -10))

Click here to see answer by edjones(8007)

Question 421529: solve by the elimination method 7x+5y=7 4x-5y=-51
Click here to see answer by mananth(16946)

Question 421531: please help
1/z+9 + 9/5z
Click here to see answer by stanbon(75887)

Question 421439: I am homeschooled and I have worked on this problem for hours. My mom finally gave me the answer but I don't seem to know how to do the steps correctly to get the answer. If I put my work in here it would take up all the space, so here is the question and the answer. I need the steps.
((2x^2 - 10x)/ (x^2 +8x +16)) ((4x + 16)/ (x^2 - 25)) the answer is((8x/ (x +4) (x+5)) but again no matter how many times I try the steps are wrong.
Click here to see answer by ankor@dixie-net.com(22740)

Question 421636: 2x+7y=5
x=19-9y
trying to find a ordered pair
Click here to see answer by rfer(16322)

Question 421503: solve by the substitution method.
3x+8y=-5
x=3-5y
the solution is?
or there is no solution?
Click here to see answer by ankor@dixie-net.com(22740)

Question 421837: half of a sum of money is 20. find the whole sum of money
Click here to see answer by edjones(8007)

Question 421836: 1/a + 1/b = 1/c
need final formula & steps to solve for c
Click here to see answer by edjones(8007)

Question 421501: the with of a rectangle is fixed at 29cm. What lengths will make the permieter greater than 70cm?
the length must be greater than__cm?
Click here to see answer by emargo19(101)

Question 421988: how do you solve this equaton 7h=84

Click here to see answer by jim_thompson5910(35256)

Question 421988: how do you solve this equaton 7h=84

Click here to see answer by shree840(260)

Question 422027: x^2 + 2x + 2 = 0
I am homeschooled, and I've been working a long time on this question, and my mom finally gave me the answer, but I can't seem to get the steps right.

The answer is x = -1 + i; x = -1 - 1.
Click here to see answer by jim_thompson5910(35256)

Question 422034: I'm homeschooled, and I've been working on this problem for a long time. My mother gave me the answer, but I can't seem to work the steps out.
The question is:
What are the solutions to the equation 1 + (1/x^2) = (3/x).
The answer is:
x = (3/2) + ((sqrt 5)/2); x = (3/2) - ((sqrt5)/2)
Click here to see answer by jim_thompson5910(35256)

Question 422054: I'm homeschooled and I can't seem to get the steps of this problem.
The question is:
Which expression represents f(g(x)) if f(x) = x^2 - 1 and g(x) = x + 3
The answer is:
x^2 + 6x + 8
I'm not good with functions of g and f, so please show me how to get the answer.

Click here to see answer by ewatrrr(24785)

Question 422040: I'm homeschooled and I can't seem to get the steps of this problem. My mom finally gave me the answer, but I still can't get the steps.
What are the solutions to the equation x^2 - 6x + 5 = -8?
The answer is:
3 + 2i and 3 - 2i

Click here to see answer by ankor@dixie-net.com(22740)

Question 422050: I'm homeschooled and I can't seem to get the steps of this problem.
The question is:
Which statement describes the graph of the equation x^2 + y^2 + 4x - 6y - 3 = 0
The answer is:
A circle with center (-2, 3) and radius 4.
I'm unsure how to get that answer.

Click here to see answer by solver91311(24713)

Question 421882: A projectile is shot up from a below-ground trench, so that its position relative to ground level at t seconds is
y=f(t)=-11+120t-16t^2 feet
a) find the position of the projectile relative to ground level at t=0.
b) sketch graph of f(t). give coordinates of the highest point, and all intercepts.
c)what is the highest position of the projectile?
d) Does the projectile ever reach 189 feet above ground level?
Click here to see answer by ankor@dixie-net.com(22740)

Question 422172: What is the answer to 3x=x+14?
Click here to see answer by rfer(16322)

Question 422053: I'm homeschooled and I can't seem to get the steps of this problem.
The question is:
What is (x + y)^5 in expanded form?
The answer is:
x^5 + 5x^4y + 10x^3y^2 + 10x^2y^3 + 5xy^4 + y^5
I'm not good with expansions, so please show me the steps.

Click here to see answer by richard1234(7193)

Question 422428: 8w-5/3-9w+7/7=7 solve for w
Click here to see answer by stanbon(75887)

Question 422453: Solve for p: 8p + 22 = 52p - 48 - 4p
Click here to see answer by rfer(16322)

Question 422381: A team of scientists found that there were 4 oak trees for every 10 pine trees. How many oak trees were there if they counted 36 more pine than oak?
Click here to see answer by ewatrrr(24785)

Question 422473: Solve the equation: x/13 = -18
Click here to see answer by jim_thompson5910(35256)

Question 422722: 3/x+1 = 2/x+ 3/x
Click here to see answer by stanbon(75887)

Question 422810: Solve (16^x)(x^x-2)=(1/64)
Click here to see answer by stanbon(75887)

Question 422935: my question is: 9k + 6 =4k + 21, plz solve the equation and show the work? thanx
Click here to see answer by stanbon(75887)

Question 422935: my question is: 9k + 6 =4k + 21, plz solve the equation and show the work? thanx
Click here to see answer by MathLover1(20849)

Question 422931: Hi, how can I simplify even more than this? I already have:
I know that is right, but the solver on this website does not come up with that, and and my teacher says it can be simplified even more..
Click here to see answer by jim_thompson5910(35256)

Question 422990: 2w+2/10= 4w/18
Click here to see answer by jim_thompson5910(35256)

Question 423005: Solve the following equation for the variable x.
log (2x+6)=log7
The solution set is
(Simplify your answer. Type an integer or a fraction.)
Click here to see answer by Gogonati(855)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 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, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 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