Questions on Algebra: Equations answered by real tutors!

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Question 122567: Which is a zero of the function f(x)=x^2+6x-7?
Click here to see answer by nivine(1)

Question 122573: Hello, i'm trying to solve this: x^2-2x-4=0. I mean x to the 2nd power minus 2x minus 4 =0 okay, i tried to FOIL this problem and it doesn't work. please help.
Click here to see answer by checkley71(8403)

Question 122381: Hi May I have some help with the following problem?
Solve the inequality. Express the solution using interval notation.

abs((x-1)/9) < 2
Click here to see answer by ankor@dixie-net.com(22740)

Question 122560: find function f such that g(x)= 1/x-5
h=g o f, and h(x)=1/(x^2-5)
Thank you!
Click here to see answer by stanbon(75887)

Question 122559: Find and simplify f(a+h)-f(a)/h (that is all over h by the way not just f(a) but the f(a+h) part too. (h cannot be 0) for the function f(x)=2-8x^2
thank you so much!
Click here to see answer by stanbon(75887)

Question 122607: How would I solve this:
-7x+1+8x=x+1
Click here to see answer by jim_thompson5910(35256)

Question 122631: A storekeeper goes to the bank to get $10 worth of change. She requests twice as many quarters as half dollars, twice as many dimes as quarters, three times as many nickels as dimes, and no pennies or dollars. How many of each coin did the storekeeper get?
Click here to see answer by bucky(2189)

Question 122720: Hi May I have some help with this equation.
Solve the equation
x + 4| = |3x + 6|
Click here to see answer by stanbon(75887)

Question 122726: how would this story problem work?

Char inherited $30,000 from her great uncle. She invested it in 2 different funds. One earns 5% adn the other earns 6%. If she earned $1600 last year, how much did she invest in each fund?
Click here to see answer by stanbon(75887)

Question 122724: I am so bad at story problems, I can not seem to figure out which equations to use...could someone help? The problem is
I went for a bicycle ride on Saturday. I rode for 2 hours on Saturday morning and 1.5 hours on Saturday afternoon. My speed in the morning was 3 miles per hour faster than in the afternoon. If I rode for 41 miles, what was my morning speed? Hint: Let x=speed in the morning
Click here to see answer by ankor@dixie-net.com(22740)

Question 122765: I WANT TO LEARN PRE-ALGEBRA: HOW DO I SOLVE X=8
Click here to see answer by josmiceli(19441)

Question 122723: I am having a hard time with this question...Solve the following formulas for the given variable The help would be greatly appreciated.
Click here to see answer by bucky(2189)

Question 122823: x/4 - 3x/2 = -1/2
these are fractions
Click here to see answer by jim_thompson5910(35256)

Question 122870: Hi. May I have some help with this inequality?

Solve the inequality. Express the answer using interval notation.
0 < |x-5|< 1/2
Click here to see answer by josmiceli(19441)

Question 122886: Twice the sum of a number and 5 is equal to three times the difference of the number and 6. Can you help me find the number?
Click here to see answer by jim_thompson5910(35256)

Question 122891: The left and right page numbers of an open book are two consecutive integers who sum in 239. Find the page numbers....please
smaller page number__________
larger page number _________
Click here to see answer by jim_thompson5910(35256)

Question 122894: A 48 inch board in to be cut into three pieces so that the second piece is twice as long as the first, and the third piece in 3 times as long as the first. If x represents the length of the first, find the lengths of all three
1st_____________
2nd________________
3rd_____________
I greatly appreciate it if you could help me
Click here to see answer by oscargut(2103)

Question 122892: The room numbers of two adjacent classrooms are two consecutive odd numbers. If their sum is 284, what are the classroom numbers?
Click here to see answer by oscargut(2103)

Question 122906: Substitute the given values into the formula, and solve for the unknown variable.
A=bh; A=60, h=12
Click here to see answer by checkley71(8403)

Question 122907:
Convert -49 degrees Fahrenheit to Celsius
Click here to see answer by checkley71(8403)

Question 123071: Find numbers a and b so that x^2+4x+9=(x+a)^2+b
Click here to see answer by jim_thompson5910(35256)

Question 123070: solve for x: 3x^2+4x-9=0
Click here to see answer by jim_thompson5910(35256)

Question 123126: What is the formula to solve this equation: Six men can build a house in 3 days. Assuming that all the workmen work at the same rate, how many men would it take to build the house in 1 day?
Click here to see answer by Earlsdon(6294)

Question 123131: Is there a formula to answer this question.
A man paints a house in 12 hours. He paints another in 29 hours. How many hours altoogether?
Click here to see answer by stanbon(75887)

Question 123221: Bob the bricklayer can complete a stone wall in 8 hours. Butch the bricklayer can finish the wall in 5 hours. If the two work together on the wall, how long will it take them to complete it?
Click here to see answer by josmiceli(19441)

Question 123290: 3x-4y=-14
-3x+2y=-2
Click here to see answer by chitra(359)

Question 123297: May I have some help with the following problem?
Suppose that each point in the coordinate plane is shifted 4 units to the right and 3 units upward.
(a) What point is shifted to (1, 3)?
(b) The point (a, b) is shifted to what new point?
Click here to see answer by solver91311(24713)

Question 123381: 2a+7=5
Not sure if this is an equation or not can you tell me please.
Click here to see answer by MathLover1(20849)

Question 123381: 2a+7=5
Not sure if this is an equation or not can you tell me please.
Click here to see answer by edjones(8007)

Question 123396: 2a+7=5
Click here to see answer by praseenakos@yahoo.com(507)

Question 123463: May I please have some help finding the area?
Draw the parallelogram with vertices A(8, 5), B(17, 5), C(12, 10), and D(21, 10) on a coordinate plane. Find the area of the rectangle
Click here to see answer by solver91311(24713)

Question 123532: what is the sum of twice a number and seven is thirty two?
Click here to see answer by stanbon(75887)

Question 123561: David has 3 more dimes than nickels. He loses 2 dimes then counts his money and finds he has $3.10. How many nickels does David have? I keep getting a fraction with this.
Thank you for your help.
Click here to see answer by josmiceli(19441)

Question 123466: Can I please have some help with this problem?
Find the point that is one-fourth of the distance from the point P(-2, 2) to the point Q(6, 9).
Click here to see answer by ankor@dixie-net.com(22740)

Question 123583: please help me to solve this:
find the two numbers whose sum is 13 and the sum of whose squares is 145
Click here to see answer by nadinadan(32)

Question 123585: please help me to solve this:
find three consecutive integers. the square of the largest one equals the sum of the squares of the other two.
Click here to see answer by nadinadan(32)

Question 123674: Find an equation of the line that passes through the points (0,0), (0,10).
I get 0 as a slope so it's undefined and I don't know what to do next.
Thanks!
Click here to see answer by stanbon(75887)

Question 123678: Please help me solve this equation:
c^2+2c-24=0
Click here to see answer by Fombitz(32388)

Question 123679: Please help me solve this equation:
36b^2-25=0
Click here to see answer by nadinadan(32)

Question 123677: Please help me solve this equation
Factor:
w^2-2w-24
Click here to see answer by nadinadan(32)

Question 123676: Please help me solve this equation:
Factor the trinomial
s^2-15s+50

Click here to see answer by nadinadan(32)

Question 123676: Please help me solve this equation:
Factor the trinomial
s^2-15s+50

Click here to see answer by Earlsdon(6294)

Question 123697: what are equations in one variable?
Click here to see answer by nadinadan(32)

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