Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 279021: how can i start solving this problem it saids solve the linear system x-4y=24 3x+y=7
Click here to see answer by dabanfield(803)

Question 279048: I'm having killer difficulty figuring out Solving Equations with More than One Operation....
Here is an example:
8x+3-x=5+4x-2
Click here to see answer by mananth(16946)

Question 279154: The price of blue socks is twice the price of black socks. If John buys 20 pairs of black socks and 30 pairs of blue socks he pays $120. How much does one pair of blue socks cost ?
(A) $1.50 (B) $3.00 (C) $4.50 (D) $1.00 (E) none of these
Click here to see answer by mananth(16946)

Question 279450: Find the y intercept of each equation.Graph each equation.
2x+y=4

Click here to see answer by rfer(16322)

Question 279529: can you solve for x and y. x-y=-5, -x+4y=10

Click here to see answer by richwmiller(17219)

Question 279546:
Click here to see answer by richwmiller(17219)

Question 279546:
Click here to see answer by stanbon(75887)

Question 279642: How do you factor (x^4-13x^2-12x)=0
Click here to see answer by richwmiller(17219)

Question 279641: How do you factor (x^5-x^4-3x^3-5x^2-2x)=0
Click here to see answer by richwmiller(17219)

Question 279735: n - 8 + n = 1 - 4n
Click here to see answer by jim_thompson5910(35256)

Question 279895: The directions of the problem is "solve,then check algebraically and graphically."
The problem that is given to me is 7x+7=21.
Click here to see answer by stanbon(75887)

Question 279904: Solve by using quadratic formula
Click here to see answer by Edwin McCravy(20055)

Question 279903: Solve by using quadratic formula
Click here to see answer by Edwin McCravy(20055)

Question 279901: Solve by using quadratic formula 9 � 6x + x2 = 0
Click here to see answer by mananth(16946)

Question 279900: Solve by using quadratic formula 3x2 � 5x + 1 = 0
Click here to see answer by checkley77(12844)

Question 279992: [56/(-8)]/(negative one fifth) =?
I didnt know how to put the fraction in so you would understand it so i spelled it out
Click here to see answer by nabla(475)

Question 280104: There is a sales tax of $22 on an item that costs $275 before tax. A second item costs $87.50 before tax. What is the sales tax on the second item?
Click here to see answer by josmiceli(19441)

Question 280103: There are 480 dishes that need to be rinsed. John can rinse them in 80 minutes by himself. It will take his friend Bob 120 minutes to rinse these dishes. How long will it take them if they rinse these 480 dishes together?
Click here to see answer by josmiceli(19441)

Question 280071: 2a+6
------ = 6a+2
3
Click here to see answer by checkley77(12844)

Question 280163: I need help with addition and subtraction of fractions. Example 8 7/8 - 3 4/9
I need to show my work, can you help
Click here to see answer by Alan3354(69443)

Question 280221:
x2 -10x+24=0
Click here to see answer by checkley77(12844)

Question 280389: A train leaves the station a 6:00 PM traveling west at 80 mi/h. On a parallel track, a second train leaves the station 3 hours later traveling west at 100 mi/h. At what time will the second train catch up with the first?
Click here to see answer by stanbon(75887)

Question 280392: I need to find the x and y intercepts of: -4x + y = -3
I tried to find the x intercept but I came up with -3 divided by -4 which is .75 but I cannot graph that. So what do I do?
Click here to see answer by stanbon(75887)

Question 280305: 3/2x-3 +2/3 - 4x - 1 /x +2 express it as a single fraction. can you tell me how to do this sum and tell me how you did it plz. explain to me please
Click here to see answer by stanbon(75887)

Question 280340: 10a + 2b = 15 and 5a = 4b, what is the value of a + b?
Click here to see answer by oberobic(2304)

Question 280547: Solve 25x^2 + 49 = 0
This is what I have:
25x^2 + 49 - 49 = 0 + -49
25x^2 = -49
25x^2/25 = -49/25
x^2 = -1.96
x^2 + 1.96 = 1.96 + - 1.96
x^2 + 1.96 = 0
Therefore a solution cannot be determine. Am I correct or is the solution x^2 + 1.96 = 0?
Click here to see answer by Alan3354(69443)

Question 280666: if y caries directly as the square root of x and x=25 when y=-15, find x when y=-108
can u just show me how to solve the problem, not the answer??? thanks!!!!!
Click here to see answer by jsmallt9(3758)

Question 280688: 50 hours after a ship sailed new york, a plane left at the same location and traveled the same direction. the plane traveled 400 kmh. if the plane over took the ship in 6 hours, how fast was the ship?
Click here to see answer by oberobic(2304)

Question 280637: rain A and B are traveling in the same direction on parallel tracks. A is traveling at 80mph and train B at 100mph. A passes station at 2:20 am and B at 2:38am. what time will B catch up to A?
Click here to see answer by rfer(16322)

Question 280749: I need help please with this homework problem:
3a-1
______ = 4
a+1

This is division formula that equals 4. It says in the directions if there is no solution to write "no solution".
Thank you in advance.
Click here to see answer by richwmiller(17219)

Question 280750: I need help solving this problem:
The sum of the reciprocals of two consecutive integers is 5/6 (this should look like a fraction 5 over 6).
Find the integers.
Thank you in advance. It says in the directions if there is no solution to write "no solution".

Click here to see answer by Edwin McCravy(20055)

Question 280751: I need help solving this fractional equation:
5k/48 - 2k/9 = 17/18 (these are suppose to be fractions but not sure how to get the line under the top numbers)
thank you in advance. I really appreciate.
Click here to see answer by Alan3354(69443)

Question 281044: I hope someone can help me please.
Fax paper cost $17.00 a case and copier paper cost $11.00 a case. If an order is received for a total of 250 cases for $3,650.00, what is the exact number of cases of copier paper?
Thank you for useng your free time to help me.
Click here to see answer by richwmiller(17219)

Question 280574: how do you solve this equation: 4y-9=15
Click here to see answer by JBarnum(2146)

Question 281166: Can you please explain to me how to work this problem?
If 8 workers can paint the walls of a gymnasium in 6 hours, how fast can 12 painters do it?
This is what i tried, and my mom even tried to help me, but we could not figure it out.
8/6= 0.75 so 12(0.75) must give me the correct answer...
Well i got 9 hours which i know isn't correct because if 8 painters can do it in 6 hours, 12 painters should be able to do it faster... right?
Thank you.
Click here to see answer by richwmiller(17219)

Question 281226: 8k+3.8=23
Click here to see answer by stanbon(75887)

Question 281323: factor completely
9(2x+y)^2-16z^2
I cannot what steps to figure this!!

Click here to see answer by mananth(16946)

Question 280341: what is the value of b in the solution:
3a - 2b - 21
a + 3b = -4
Click here to see answer by Alan3354(69443)

Question 281327: factor cube root
27x^3+125y^3
Click here to see answer by dabanfield(803)

Question 281281: If x=-1, and y=3
what is the value of the expression 3x(to the third) - 2xy
I keep getting:
3(-1)to the third) -2(-1)(3)
=-27- -6= -21
The answer isn"t right
The choices for answers are: -9 , -3 , 3, 9, 21
they say the answer is 9... How?
Click here to see answer by richwmiller(17219)

Question 281255: -3z/4=9/16
I have the answer -3/4
I want to know how to find the answer

Click here to see answer by richwmiller(17219)

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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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