Questions on Algebra: Equations answered by real tutors!

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Question 247131: the amount of farmland in the U.S. is decreasing by one acre every .00876 hours as farmland is being converted to non-farm use. At what rate in acres per day is the farmland decreasing?
Translate the following sentence into an equation: The quotient of (x+3) and 5y is the same as the product of x and y
please show your work

Click here to see answer by checkley77(12844)

Question 247130: the amount of farmland in the U.S. is decreasing by one acre every .00876 hours as farmland is being converted to non-farm use. At what rate in acres per day is the farmland decreasing?
Click here to see answer by checkley77(12844)

Question 247153: My daughter has this critical thinking problem and i'm a bit rusy with my algebra :( Can you help?
"An apple costs the same as 2 oranges. Together, an orange and a banana cost .10 cents more than an apple. Two oranges cost .15 cents more than a banana. What is the cost for one of each fruit? "
Click here to see answer by stanbon(75887)

Question 247187: Solve and check.
x-1/x^2+4 = 1.
Click here to see answer by edjones(8007)

Question 246696: i have a problem with a question
x+y+z=4
X^2+y^2+z^2=14
x^3+y^3+z^3=34
x^4+y^4+z^4=......
answer it please
Click here to see answer by ankor@dixie-net.com(22740)

Question 247260: How to decide whether the pair of lines is parallel, perpendicular or neither
2x+3y=8
2x+3y=6
Click here to see answer by blwinbbbles(106)

Question 247318: dealing with slopes 4x+2y=-3 i get -3/2
Click here to see answer by Alan3354(69443)

Question 247337: iam a 3 digit number less than 300 iam divisible by 2 and 5 but not 3 the sum of my digits is 7 what number am i.
Click here to see answer by solver91311(24713)

Question 247337: iam a 3 digit number less than 300 iam divisible by 2 and 5 but not 3 the sum of my digits is 7 what number am i.
Click here to see answer by Edwin McCravy(20054)

Question 247449: i need to find the value of "y" in the equation 6y+2=2y*y-6. i forgot how to remove the y*y (y squared)and solve.
Click here to see answer by oberobic(2304)

Question 247449: i need to find the value of "y" in the equation 6y+2=2y*y-6. i forgot how to remove the y*y (y squared)and solve.
Click here to see answer by checkley77(12844)

Question 247469: 1/2+(2/3*3/4)-(4/5x5/6)=
Click here to see answer by checkley77(12844)

Question 247721: Hello,
I can someone help me with these problems.
1. Find the x and y intercepts, if any, if none exist, state
F(x)=x^2-4x-18

2. Use formula 4.9t^2+vot=s to answer the question;
A coin was tossed downward with an initial velocity of 30 meters per second (v0) at an altitude of 402 meters (s). Approximately how long does it take the coin to reach the ground
This is what I got no sure?
use 4.9t^2 + vot = s
a coin is tossed downward with an initial velocity of 30 meters per second(v0)at an altitude of 402 meters(s). approximately how long does it take the coin to reach the ground?
-4.9t^2-30t = -402 meters
4.9t^2 + 30t -402 = 0
Use Quadratic formula:
t = [-30 +- sqrt(900 - 4*4.9*-402)]/(9.8)
t = [-30 +- sqrt(8779.2)]/9.8
Positive solution:
t = [-30+93.7]/9.2
t = 6.924 seconds

3. Not sure of this one
Translate the problem into a pair of linear equations in 2 variables. Solve the equations using either elimination or substitution. State your answer for the specified variable.
Roberto invested some money at 7% and then invested $2000 more than twice this amount at 9%. His total annual income from the two investments was $2930. How much did he invest at 9%?
Thank you so much, I know you guys are great, I glad you are here to people like me that have been out of school for 15 years.
Tammy

Click here to see answer by Alan3354(69443)

Question 247795: two numbers add up 20 when plusd and 96 when multiplied find the two numbers
Click here to see answer by solver91311(24713)

Question 247795: two numbers add up 20 when plusd and 96 when multiplied find the two numbers
Click here to see answer by stanbon(75887)

Question 247768: Is there a 3rd grade way to solve this equation?
In a game of baseball one team gets 8 more points than the other. The total score is 16. what was each teams score? I say (x+8)+x=16 therefore x=4, other team get 12. I don't know if 3rd graders routinely know alegbra. how would they be told to solve this? Thanks
Click here to see answer by scott8148(6628)

Question 247953: Hello,
This is my first time on this site, but I have heard that you help students with problems, and that it provide a better understanding I was wondering if you could help me with two problems.
I do not know how it works but here goes.
I am suppose to solve this problem without a graph, the instruction state that I need to find the minimum value of the following expression:
F(x)=(x-1)^2+1

On the next problem I do not need a graph but I need to find the line of symmetry for the following expression:
F(x)=6(x+2*sqrt5)^2-16.26
Again, if you can help me I do appreciated you kindness. A friend gave me your website I hope it okay.
Thank you
Sammie Ellis

Click here to see answer by stanbon(75887)

Question 248055: give the slope-intercept form of the equation of the line that is perpendicular to -6x-4y=6 and contains the point (7,4) and the answer is y=2/3x - 2/3. i just need to know the steps to get to that answer
Click here to see answer by richwmiller(17219)

Question 248024: how do i solve the equation using additon and subtraction 3x-2x+8-10=7
Click here to see answer by jim_thompson5910(35256)

Question 248096: 9(3x-2)
Click here to see answer by jim_thompson5910(35256)

Question 248145: how do u do the equation: 20=6x+8 ? i dont think my teacher explains them right.
Click here to see answer by checkley77(12844)

Question 248314: (b^9+6b^6+b^4+9b^3+4^b+8)/(b^3+4)
Please help me solve this and explain how you got it
Click here to see answer by richwmiller(17219)

Question 248348: An 84 meter length of cable is cut so that one piece is18 meters longer than the other. Find the length of each piece.
Click here to see answer by solver91311(24713)

Question 248341: 2x+39(80x+1,234)=?
Click here to see answer by checkley77(12844)

Question 248372: A bottle filled with water weighs 9.6 kg. If the water by itself weighs 5 times as much as the bottle, What is the weight of the bottle?
Click here to see answer by edjones(8007)

Question 248457: What is the answer to 2(x+7)=5(x-7)?

Click here to see answer by jim_thompson5910(35256)

Question 248457: What is the answer to 2(x+7)=5(x-7)?

Click here to see answer by richwmiller(17219)

Question 248454: 8x-7=19x+15 what is the solution set?
Click here to see answer by jim_thompson5910(35256)

Question 248467: i NEED TO SEE THE STEPS ON THIS EQUATION. I KNOW THE ANSWER BUT NEED MORE STEPS
3n^2+8n+1=0
Click here to see answer by solver91311(24713)

Question 248474: n-20=8-n what is n?
Click here to see answer by richwmiller(17219)

Question 248470: I posted a question and checkley77 was kindly enough to answer, but I left out one line of the problem.
Teacher wants us to solve for Y:
7x - 3y = 4
Thank you so very much!!
I apologize for my omission!
Click here to see answer by College Student(505)

Question 248482: The sum of the measures of any triangle is 180 degrees. Find the angle measures of a triangl if the second angle measures 10 degerees less than twice the first, and the third angle measures 25 degrees more than the second.
Click here to see answer by richwmiller(17219)

Question 248489: The sum of the measures of any triangle is 180 degrees. Find the angle measures of a triangl if the second angle measures 10 degerees less than twice the first, and the third angle measures 25 degrees more than the second.
Click here to see answer by oberobic(2304)

Question 248527: slove the following system of equations
x+5y=8
x+y=4
Click here to see answer by richwmiller(17219)

Question 248527: slove the following system of equations
x+5y=8
x+y=4
Click here to see answer by stanbon(75887)

Question 248527: slove the following system of equations
x+5y=8
x+y=4
Click here to see answer by blwinbbbles(106)

Question 248595: How do you solve 2x/x-3 + x/x-8 = 3/x^2-11x+24?
Click here to see answer by stanbon(75887)

Question 248663: What are the steps in solving this equation?
6-(n+3)=3n+5-2n
Click here to see answer by richwmiller(17219)

Question 248745:

Click here to see answer by College Student(505)

Question 248598: Solve the equation by making an appropriate substitution. 2x^1/2 - 5x^1/4 -25 = 0

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

Question 248844: We are working on: m X + b
----------------------------------------------------------------------------------
(And i need help. so can u please explain it step by step; but not to complicated please and thank you.)
----------------------------------------------------------------------------------
Rewrite the equation in the slope-intercept form. Then identify the slope and the y-intercept of the line...
11.) 4 x + y = 1
12.) x - y = 6
13.) 6 x - 3 y = -9
14.) -12 x - 4 y = 2
15.) 2 x + 5 y = -10
16.) -x - 10 y = 20
PLEASE HELP ME
Click here to see answer by oberobic(2304)

Question 248856: Determine where the two lines x+4y=3 and 2x-6y=8 intersect?
Click here to see answer by stanbon(75887)

Question 248856: Determine where the two lines x+4y=3 and 2x-6y=8 intersect?
Click here to see answer by oberobic(2304)

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, 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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