Questions on Algebra: Equations answered by real tutors!

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Question 370500: Hi please help me.
Three ducks and two ducklings weigh 77 kg Four ducks and three ducklings weigh 107 kg All ducks weigh the same and all ducklings weigh the same What is the weight of two ducks and one duckling?
(3D + 2d = 77)
(4D + 3d = 107)
Click here to see answer by Jk22(389)

Question 370428: 2.3x+9.2=23
Click here to see answer by edjones(8007)

Question 370504: please help me solve me this question....-5(2x+2)-8(2x-7)
Click here to see answer by checkley77(12844)

Question 370502: Hi My little cousin needs help with this homework problem, I tried helping her but I can't seem to get the right answer.
Three ducks and two ducklings weigh 77 kg Four ducks and three ducklings weigh 107 kg All ducks weigh the same and all ducklings weigh the same What is the weight of two ducks and one duckling?
This is how I set up the problem
D=Duck
d=Duckling
(3D + 2d = 77)
(4D + 3d = 107)

Click here to see answer by checkley77(12844)

Question 370609: The sum of three consecutive odd integers is 201. Find the integers.
Click here to see answer by Alan3354(69443)

Question 370631: Solve the following equation for m
n=m/8
Click here to see answer by solver91311(24713)

Question 370631: Solve the following equation for m
n=m/8
Click here to see answer by jim_thompson5910(35256)

Question 370594: 3 / x^2 - 25 = 1 / x + 5 + 2 / x - 5
Solve the equation for the variable
Click here to see answer by mananth(16946)

Question 370684: How do you compute algebraically (not by graphing) the intercepts of any function?

For example, what are the x-intercept(s) and y-intercept(s) of 2x � 5y = 8 without graphing the equation? Remember that intercepts are points and points are written as ordered pairs.
Click here to see answer by mananth(16946)

Question 370764: Here is a word problem didn't know if i set it up right and solved it right
Three is added to a number and then the sum is multiplied by four, the result is 16
I got (n+3)4=16
n=3.25
Is this correct because it doesn't work out when you replace it with n

Click here to see answer by nerdybill(7384)

Question 370813: what do you need to include when writing a equation
Click here to see answer by prettinaynay(1)

Question 371060: Solve the equation. 15^x=5^(x+2)
Click here to see answer by robertb(5830)

Question 371060: Solve the equation. 15^x=5^(x+2)
Click here to see answer by Edwin McCravy(20054)

Question 371084: -3x-y=155 6x+7y=5 solve using substitution method
Click here to see answer by Fombitz(32388)

Question 371138: 12b-5=3b
Click here to see answer by rfer(16322)

Question 371136: 28-3W=4.6-w
I am having a hard time with this
Click here to see answer by rfer(16322)

Question 371364: 1. 8(9+6)-4
2. 3+4*(5-7)
3. 12+6*2+8-4
Click here to see answer by lefty4ever26(59)

Question 371369: Factor completely: y^4-1 I am not sure how to factor this. Thank you.
Click here to see answer by Fombitz(32388)

Question 371369: Factor completely: y^4-1 I am not sure how to factor this. Thank you.
Click here to see answer by ewatrrr(24785)

Question 371371: Factor: w^2-49z^2 - another factoring question, I have tried and I just don't get the process.
Click here to see answer by ewatrrr(24785)

Question 371568: Can you solve for a variable in an equation
Thanks
Click here to see answer by Alan3354(69443)

Question 371565: -6x+17+8x+17=4
Click here to see answer by nyc_function(2741)

Question 371604: ax + by = cz solve for y
Click here to see answer by checkley77(12844)

Question 371734: find the equation that pass through the point(-2,7) and is parallel to X-6y=3
Click here to see answer by robertb(5830)

Question 371747: Write the statement as an equation, letting x represent the unknown number. 3 times the sum of a number and 7 is 4 times the same number.
Click here to see answer by robertb(5830)

Question 371756: Given that (0,1) is the center of a circle and (-4,4) is a point on the circle, find the radius of the circle.
Answer choices:
A.) 1
B.) 2 sqrt(2)
C.) 5
D.) 10
E.) None of these
Thanks!
Click here to see answer by robertb(5830)

Question 371776: solve the equation fory -5x+15y=0
Click here to see answer by Alan3354(69443)

Question 371810: could you solve and explain detailed this equation : Solve -17 + n/5 = ?
Click here to see answer by rfer(16322)

Question 371760: Given that (1,-5) and (3,7) form a pair of diameter points on a circle, find the center of the circle.
Answer choices:
A.) (2,1)
B.) (1,6)
C.) (1,1)
D.) (-1,-6)
E.) (4,2)
Click here to see answer by rfer(16322)

Question 371832: Solve the equation over the interval [0 pi, 2 pi) : 3tan^3x=tanx
Click here to see answer by robertb(5830)

Question 371831: Solve the equation over the interval [0 pi, 2 pi) : Sqrt(3)secx-2=0
Click here to see answer by Fombitz(32388)

Question 371964: How would one solve 25A^2B^4-16C^2D^2?
Click here to see answer by Fombitz(32388)

Question 372038:
Click here to see answer by Fombitz(32388)

Question 372038:
Click here to see answer by pixiestix(1)

Question 372050: 9(x+3)=4x-3
Click here to see answer by Fombitz(32388)

Question 372050: 9(x+3)=4x-3
Click here to see answer by rfer(16322)

Question 372051: can u help me on this problem 7t-6=-104
Click here to see answer by rfer(16322)

Question 372077: Jo is thinking of a number. 4 less than 9 times the number is 176. Find Jo's number.
Click here to see answer by ewatrrr(24785)

Question 372109: Please assist with this equation.
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
8x � 5y = 3
7x + y = 51

Click here to see answer by Greenfinch(383)

Question 372035: perform the indicated operation. simplify show step by step
ILL USE " / " to represent the equation. it does not mean to DIVIDE.
""/"" ---MEANS--over NOT divide
5/2-x+ 2x/ x^2-4 - 1/2+x
Click here to see answer by ankor@dixie-net.com(22740)

Question 372143: I got this question wrong at school. The question is 5-r=-2. MY answer was 3 but it was wrong. What is the correct answer.
Click here to see answer by Alan3354(69443)

Question 372105: Please assist me with the equation set for this word problem.
Mary invested one amount at 8% simple interest, and a second amount at 5% interest, earning $49.16 in one year. If she had switched the amounts, she would have earned $52.37. What were the two amounts?
Click here to see answer by checkley79(3341)

Question 372110: One bacterial culture is 18 days older than a second bacterial culture. In 10 days the first culture will be twice the age of the second. What is the present age of both cultures?
I know that:
The age of the bacterial culture in ten days = 2 times age of the second bacterial culture
But I don't know where to go from here.
Click here to see answer by Greenfinch(383)

Question 372222: Factor Completely:
x^2-x^2y^4
Click here to see answer by stanbon(75887)

Question 372240: what is p-1=5p+3p-8

Click here to see answer by robertb(5830)

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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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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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