Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 108787: 6D + 2N = 3G
9D + 4N = 6G
D <= 98
N <= 60
Click here to see answer by nyro09nyro(4)

Question 109486: Show that the numbers is rational by writing it as a quotient of two intergers.
2. 3
Any help with this equation would be GREATLY appreciated.
Click here to see answer by HyperBrain(694)

Question 108809: Find the product or quotient. Write the answer using exponents.
3^7 x 3^4 ___ 3^10
Any help with this problem would be GREATLY appreciated:)

Click here to see answer by HyperBrain(694)

Question 108807: Find the product or quotient. Write the answer using exponents.
8^8 ___ 8^6 x 8
Any help with this problem would be GREATLY appreciated:)
Click here to see answer by HyperBrain(694)

Question 109839: If I paid $350 and used 16 bills of $5 and $50, write two equations to determine how many $5. and $50 bills i used
Click here to see answer by josmiceli(9661)

Question 109828: You have 650 coins that equal $256.25. You only have one dollar coins and quarters. How many of each coin do you have?
Click here to see answer by josmiceli(9661)

Question 109880: Factor completely. 5a2 – 125
Click here to see answer by Nate(3500)

Question 109882: Factor completely. x2 – 3x – 18
You nnned to have a set of numbers that when you multiply will give you -18 and also give you as a co- efficient of the middle number the complete factors are therefore.
(x-6)(x+3)
Click here to see answer by stone(1)

Question 109896: i need a answer to:
3x-y=2
x+2y=10
Click here to see answer by vidhyak(94)

Question 109947: Write the equation of the line given the two points (-2,3) and (1,1)
Click here to see answer by jim_thompson5910(28504)

Question 109998: 2/3y=60
two over three times y equals sixty
I am not sure how to solve this equation, please show me step by step so that I will be able to do in the future
Click here to see answer by beccadancer15(3)

Question 110054: in a cube, how does the number of faces compare to the number of edges?
what I came up with was 6f=8e
what is the relationship of the number of edges and the number of vertices in a cube?

Click here to see answer by BrittanyM(80)

Question 110000: 5(E+6)=4(E+7)
I tried this:
5E+30=4E+28
5E-4E=1E
30-28=2
1E/1= 2/1
Answer: E=2
Please help

Click here to see answer by BrittanyM(80)

Question 110092: Find the sum or difference.
16. -10 7/16 - 2 3/16
Any help with this equation would be GREATLY appreciated.
Click here to see answer by MathLover1(6622)

Question 110107: One pipe can fill a pool in 9 hours. If a second pipe is used at the same time it will fill the pool in 3 hours. How long would it take the second pipe to fill the pool on it's own.
Click here to see answer by Kkray93(1)

Question 110088: Show that the number is rational by writing it as a quotient of two integers.
4. 0.37
Any help with this equation would be greatly appreciated.
Click here to see answer by bucky(2189)

Question 110165: I am stuck on this problem. I have to simplify this equation problem.
3(x-5)/4=6(x+8)/2
This is what I have so far and I don't think it is right.
2*3(x-5)=4*6(x+8)
6(x-5)=24(x+8)
6x-30=24x+192
6x-30+30=24x+192+30
6x=24x+222
6x-24x=24x+22
-18x/-18=222/-18
x=-12.33
Click here to see answer by checkley71(8403)

Question 110167: I am stuck on this problem, and I don't think it is right.
15-(-3)(2x-9)=60
15-(-6x)+27=60
15+27+6x=60
42+6x=60
42+6x-42=60-42
6x=18
x=3
Click here to see answer by checkley71(8403)

Question 110329: make x the subject y^2=(8x+2)^2/(4x+2)
Click here to see answer by MathLover1(6622)

Question 110581: I'm stuck on this problem. Can you please help me? 2x^2=3x-1
Click here to see answer by checkley71(8403)

Question 109113:
2x+y=6
Click here to see answer by HyperBrain(694)

Question 110587: Can you help me with this? 12y^2-1=44(1-y)
I tried this
12y^2-1=44-44y [44+1=45]
12y^2=43-44y
12y=
Click here to see answer by HyperBrain(694)

Question 110587: Can you help me with this? 12y^2-1=44(1-y)
I tried this
12y^2-1=44-44y [44+1=45]
12y^2=43-44y
12y=
Click here to see answer by checkley71(8403)

Question 110609: S=rg/r-g solve for g
Click here to see answer by stanbon(57246)

Question 110623: remove parenthesis and solve: show steps please
5(x+2)+3(2x+1)-(x-5)=10
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 110663: 3(x-2)-2x=x-6
A) 0
B) 1
c) Identity
D) No solution
Click here to see answer by jim_thompson5910(28504)

Question 110684: The problem: Find two numbers whose sum is 44 and whose difference is 22
I already know the answer - I had no problem figuring it out. What I need to see is the proper way to solve it. I got the answers 33 and 11. This is how I started it:
x + y = 44
x - y = 22
x = 22 + y and x = 44 - y .....what next? I plugged numbers in until I found the answer but there must be an easier way?
Click here to see answer by Earlsdon(6287)

Question 110683: The problem: Find two numbers whose sum is 44 and whose difference is 22
I already know the answer - I had no problem figuring it out. What I need to see is the proper way to solve it. I got the answers 33 and 11. This is how I started it:
x + y = 44
x - y = 22
x = 22 + y and x = 44 - y .....what next? I plugged numbers in until I found the answer but there must be an easier way?
Click here to see answer by stanbon(57246)

Question 110738: Simplify the Expression
19.26/15n + (-8/15n)
Any help this equation would be GREALTY appreciated.
Click here to see answer by stanbon(57246)

Question 110740: Find The Sum or Difference.
21. 7/8 + 11/12
Any help with this equation would be GREATLY appreciated.
Click here to see answer by jim_thompson5910(28504)

Question 110742: Find The Sum or Difference.
23. 5/8 - 3/4
Any help with this equation would be GREATLY appreciated.
Click here to see answer by jim_thompson5910(28504)

Question 110745: Evaluate the expression when x = - 3/8 and y = 7/12
27. x - y
Any help with this equation would be GREATLY appreciated.
Click here to see answer by jim_thompson5910(28504)

Question 110744: Evaluate the expression when x = - 3/8 and y = 7/12
x + y
Any help with this equation would be GREATLY appreciated.
Click here to see answer by jim_thompson5910(28504)

Question 110617: Describe the roots of the equation: 7x^2 + 2x - 3 = 0
Click here to see answer by jim_thompson5910(28504)

Question 110743: Find The Sum or Difference.
25.-6 2/3 - 4 3/5
Any help with this equation would be GREATLY appreciated.
Click here to see answer by stanbon(57246)

Question 110741: Find The Sum or Difference.
22. -3 1/4 +(-2 2/5)
Any help with this equation would be GREATLY appreciated.
Click here to see answer by edjones(7569)

Question 110807: Find the rate.
240 pounds of fertilizer
6 lawns
This is supposed to be like a fraction is set up, with a line in between the two. I do not understand rates can someone please help me?

Click here to see answer by Earlsdon(6287)

Question 110829:
Please help me solve the following problem:
-5k-19=5-13k
Click here to see answer by jim_thompson5910(28504)

Question 110830: You spend $60 on clothes and buy 3DVD movies. Your friend spends nothing on clothes and buys 8 dvd movies. You both spend the same amount of money. All the dvds cost the same amount. How much does each dvd cost?
Click here to see answer by edjones(7569)

Question 110834: Given f(x)=-x-4, find f(a+1)
Click here to see answer by jim_thompson5910(28504)

Question 110899: Can you please help me solve this? I keep getting 3x as the answer, but the book tells me that it should be x+y/y. I need to see the steps. Thanks.
(5x-y)/(3y)-(2x-4y)/(3y)
Click here to see answer by jim_thompson5910(28504)

Question 110931: 2x+3x-5=-15
Click here to see answer by jim_thompson5910(28504)

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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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