Questions on Algebra: Equations answered by real tutors!

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Question 665175: pv=rt solve for t

Click here to see answer by MathLover1(20849)

Question 664454: how do you write "subtract 7x-5 from 10x-10" ?
Click here to see answer by ReadingBoosters(3246)

Question 664483: What is the answer to 5a^2 + 3a + 4 when a = -2
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Question 664489: Please help me solve this equation: (x)/(2)-(2x)/(16)=(3/8)
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Question 664165: y+g=12 and 2y+3g=16
Solve for each variable
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Question 664143: Can you help me find the slope-intercept form which passes through (-2,3) and (0,1). Thank you
Click here to see answer by ReadingBoosters(3246)

Question 665230: Please help me solve:
x/2 = 5x +18
Click here to see answer by lynnlo(4176)

Question 665230: Please help me solve:
x/2 = 5x +18
Click here to see answer by ReadingBoosters(3246)

Question 664406: The area of the base of a rectangular desk telephone is 780 square centimeters. The length of the rectangular telephone is 4 centimeters longer than its width. What is the length and width?

Click here to see answer by ReadingBoosters(3246)

Question 663467: i need to know how to solve this equation 14 + 5n = -4n + 17 and also this equation 1/2x - 3 = 2 - 3/4x
Click here to see answer by ReadingBoosters(3246)

Question 665268: Thank you for helping me. I am having problems with 2 problems:
1. The length of a rectangle is five times the width. The perimeter is 84 feet. What is the length & width of the rectangle?
2. The width of a rectangle is 9cm less than twice the length. The perimeter is 72 cm. What is the length & width of the rectangle?
Thank you,
Scott
Click here to see answer by ReadingBoosters(3246)

Question 665314: how do you write 2 cubed in algebraic expression ?
Click here to see answer by lynnlo(4176)

Question 665314: how do you write 2 cubed in algebraic expression ?
Click here to see answer by ReadingBoosters(3246)

Question 665350: whats the answer to the quadratic equation 6p^2-15=P
Click here to see answer by lynnlo(4176)

Question 665370: simplify expression 4(3+7y)+6(2-y) if y =2
Click here to see answer by lynnlo(4176)

Question 665370: simplify expression 4(3+7y)+6(2-y) if y =2
Click here to see answer by ReadingBoosters(3246)

Question 665427: I am solving by using the elimination method.
-5x+y=-13
6x-5y=8
5x=8+3y
3x-4y=18
1/2x+3y=11
2x-y=5
3x+2y=2
x+3y=-4
3x-y=6
x+2y=2
4x-y=1
x+2y=7
2x+5y=-1
3x+4y=-5
Click here to see answer by MathLover1(20849)

Question 665467: question
The length and the breadth of a room are of a room is
and unit respectively. what is the area of the floor.
i do not know the answer. my friend told that she got the answer and that is (a^4)-[(a^2)*(b^2)]+(b^4). is she correct? pls show me how to do this sum.. are we supposed to use identities here?
Click here to see answer by mananth(16946)

Question 665452: A rectangular picture frame was made from one 8 ft long board with nothing left over. the two lengths of the frame total 6ft. What is the total for the two widths? I need an equation, I know how to solve equations but have trouble with setting them up.
Click here to see answer by MathLover1(20849)

Question 665615: y = (x+2)/x
find x in terms of y
Click here to see answer by jim_thompson5910(35256)

Question 665615: y = (x+2)/x
find x in terms of y
Click here to see answer by Alan3354(69443)

Question 665640: Hello!
How do I find the x and y intercepts of a constant line, f(x)=b, at the points (-2,B) (-1,B) (0,B) (1,B) (2,B) with a domain of (-infinity,+infinity), and no endpoints? I know you substitute x and y for zero but this has me stuck.
Oh! Also would the range be written like, {y|y=2} [y|y=2] or (y|y=2), in other words a curly bracket, parenthesis, or brackets? Sorry it's 2 questions but I'm really stuck!
Thanks so much!
-Hannah
Click here to see answer by DrBeeee(684)

Question 665663: 6z+5(4-z)= -(z-1)+11
Click here to see answer by MathLover1(20849)

Question 665659: 3(21y+14)-3 (4y+7)=0
-
7
Click here to see answer by ReadingBoosters(3246)

Question 665667: Y=p+q+r
_____
5
Click here to see answer by ReadingBoosters(3246)

Question 665666: -6n+7p=c
Click here to see answer by ReadingBoosters(3246)

Question 665686: Factor the polynomial completely:
2w^2-14w-36
Click here to see answer by ReadingBoosters(3246)

Question 665721: 3. A 20 ft. ladder is placed against the wall of building the ladder touches the building 12ft from its base. How far is the ladder from the foot of the ladder from the foot of the building?
Click here to see answer by mananth(16946)

Question 665753: IS = 1 OR 0
Click here to see answer by lynnlo(4176)

Question 665755: aCCORDING TO THE LAWS OF EXPONENTS, WE CAN SUBTRACT THE POWERS WHEN WE DIVIDE TWO SIMILIAR BASES. DOES THIS RULE APPLY TO THE POWERS WHICH ARE FRACTIONS
Click here to see answer by Alan3354(69443)

Question 665769: What's x-2 divided 3 -x+1 divided 6 equals x - 1 divided 10
Click here to see answer by lynnlo(4176)

Question 665769: What's x-2 divided 3 -x+1 divided 6 equals x - 1 divided 10
Click here to see answer by MathLover1(20849)

Question 665723: A boy was flying a kite which was at a height of 40m just above a tree.The string was 50m long. how far away from the tree was the boy flying his kite from?
this is the question. my friend told that her answer is 30 m.pls explain and show how to solve this sum
Click here to see answer by Alan3354(69443)

Question 665835: I am trying to find the x-intercept of 3y=2x+36. I tried to make the 3y a zero but i'm not sure if that is how you do it.
Click here to see answer by Alan3354(69443)

Question 665861: 5x+6-2x=-5-x what does that equal
Click here to see answer by Alan3354(69443)

Question 665861: 5x+6-2x=-5-x what does that equal
Click here to see answer by ReadingBoosters(3246)

Question 665853: The larger of two numbers is 10 more than the smaller number.
5 times the larger number is 40 more than 6 times the smaller number.
what are the two numbers?

Click here to see answer by ReadingBoosters(3246)

Question 665964: please help me solve this equation 2/3t=9
Click here to see answer by MathLover1(20849)

Question 665928: what is two fifths of a number increased by nine?

Click here to see answer by ReadingBoosters(3246)

Question 665925: Find the GCF of: 9ab^3, 6ab^5, 12a^2b^4
Click here to see answer by ReadingBoosters(3246)

Question 665953: how would I solve a linear equation? For example, y-x=7
1/3y=-1/4x
(used in at least one of these forms elimination, substitution, and/or graphing)
Thank You
Click here to see answer by lynnlo(4176)

Question 666057: Hello,
I need help on the subject of fractions in equations. How do I solve
1/5 + 3/6=-1/2
Please answer me.

Click here to see answer by MathLover1(20849)

Question 666071: please help me out with this question
find the value(s) of k that make the 2nd polynomial a factor of the first one
a)x^3-kx^2+5x+k;x-2
b)x^3+4x^2-11x+k;x+2

Click here to see answer by DrBeeee(684)

Question 666100: -9x+1=-8
Click here to see answer by MathLover1(20849)

Question 666127: a company that replicates DVDs spends $1500 per day in building overhead plus $0.80 per DVD in supplies and labor. If the DVDs sell for $1.59 per disk, how many DVDs must the company sell each day before it makes a profit?
Click here to see answer by swincher4391(1107)

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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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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