Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 288968: what does it mean when a trinomial cannot be factored
Click here to see answer by nyc_function(2741)

Question 288968: what does it mean when a trinomial cannot be factored
Click here to see answer by stanbon(75887)

Question 288968: what does it mean when a trinomial cannot be factored
Click here to see answer by Stickisaguy(1)

Question 288982: Hi all, I was hoing to get some help with the following:
I need to make t the subject of the following expression:
h^3 = ln(g /(t^2+1))
Help with steps and explanations would be great.
Thanks, -Nick.
Click here to see answer by stanbon(75887)

Question 289050: Hi,
I have a question about how to solve this equation: 2+x>15/x.
This is how I would solve it:
2x+x^2>15
x^2+2x-15>0
(x+5)(x-3)>0
with a result of x>-5 or x<3
So the answer would be (-5,0),(3, infinity)....
Yet, I think I missed something in my steps for solving the equation...because once, when I redid the equation, I found the answer to be (-infinity,-5),(0,3).
Could you please help me find the correct solution?
Thanks
Click here to see answer by dabanfield(803)

Question 289131: In testing an engine, various mixtures of gasoline and methanol are being tried. How much of a 90% gasoline mixture and a 75% gasoline mixture are needed for 1200 L of an 85% gasoline mixture?
Click here to see answer by brucewill(101)

Question 289129: Mix a solution that is 50% acid with a solution that is 100% water to make 4 liters of a solution that is 10% acid. How much of each solution should you use?
Click here to see answer by brucewill(101)

Question 289120: During a bike-a-thon a local company pledges to donate 1.25 for every 4.00 pledge by the public. If the public pledges a total of 156.00 per mile, how much will the company donate per mile?

Click here to see answer by brucewill(101)

Question 289152: Solve.
a) 7x - 5 - 2x = 9
b) 2x + 4 = 3x - 2
c) 4(x - 3) = 3(x - 4)
Click here to see answer by jim_thompson5910(35256)

Question 289176: how can u graph y>x+3
Click here to see answer by Theo(13342)

Question 289149: (2x^2+5x+15)divide(2x+3)
Click here to see answer by checkley77(12844)

Question 289207: Please help Find the equation of the line that passes through (3,-1) and is perpendicular to the line y-2x=10?
Click here to see answer by checkley77(12844)

Question 289298: Put this into an equation
the length of a rectangle is 4 cm less than 3 times it width
Click here to see answer by Stitch(470)

Question 289551: a section of PVC pipe is 2 1/2 times the length of a second section. The two pipes together have a length of 35 ft. What are the lengths of the two sections?

Click here to see answer by Stitch(470)

Question 289504: Solve: 8y^3 + 27 divided by 2xy - 10y + 3x -15
Click here to see answer by richwmiller(17219)

Question 289733: A backpacker wishes to cross the desert, an 8-day trip. The packer and each of her helpers can carry a maximum of 5 days� worth of supplies. What is the smallest number of people who must start the hike in order for the backpacker to cross the desert and each helper to return safely to the starting point?
Click here to see answer by solver91311(24713)

Question 289782: If you drove 30 miles in 45 minutes how fast would you be driving? Express your answer in miles per hour.
Click here to see answer by richwmiller(17219)

Question 289787: Help! how can you turn 6x-4y=12 to y=mx+b form???
Angelica
Click here to see answer by amnd(23)

Question 288940: 2y-3=y
Click here to see answer by j1mmy94(14)

Question 287457: 3(z-2)=2(z-1)
Click here to see answer by j1mmy94(14)

Question 286732:
Click here to see answer by j1mmy94(14)

Question 288663: I am trying to do this equation any help is appreciated

Simplify: (x^-7 y^11 z^14)-2
Thanks
Eric
Click here to see answer by richwmiller(17219)

Question 289849: How do I solve for 'x' when (8.11-x)/x = .20 what are the steps you go through? thanks so much!
Click here to see answer by richwmiller(17219)

Question 289942: 4x-3y=10
2x-3y=2
Click here to see answer by brucewill(101)

Question 289941: Find the algebraic expresson for the quantity in italics using the given information:
The rate, given that the distance is 200 feet and the time is x + 3 seconds. (rate is italicized)
Click here to see answer by richwmiller(17219)

Question 289932: I need a rudimentary break down of 3x3 equations. I just can't figure it ot and need a step by step break down.
3x+2y+2z=2
x-2y-z=1
2x-3y-3z=-3
Click here to see answer by richwmiller(17219)

Question 290076: This is a multi-step equation. I need the steps and the answer. What is r: 3r/4-4/5=7/10
These are all fractions.
Click here to see answer by richwmiller(17219)

Question 290189: 325 is 80% of what number?
Click here to see answer by unlockmath(1688)

Question 290189: 325 is 80% of what number?
Click here to see answer by Deina(147)

Question 290299: I need to know how the answer was come up with.. 6 5/9 divided by 1 2/3 =59/15 .. how in the world and where did the 15 come from ?
Click here to see answer by jim_thompson5910(35256)

Question 290389: 4x-3=9
Click here to see answer by bcampbell23669(14)

Question 290411: write an equation : through (1,3) parallel to y=2x-3
Click here to see answer by stanbon(75887)

Question 290402: Solve each equation using the indicated method.
a) 2x^4 - 10x^2 = 0 (factoring method)

Click here to see answer by richwmiller(17219)

Question 290303: Find the value of n such that x2 + 2x + n is a perfect square trinomial.
Click here to see answer by checkley77(12844)

Question 290409: Write an equation : through (0,9) perpendicular to 3x-2y=4
Click here to see answer by MathLover1(20849)

Question 290465: I need help solving these two equations:
5/6(x-1)-2/3(2x+1)=3
x/2 + 1/x-1 = x/x-1
Thank you so much.
Click here to see answer by richwmiller(17219)

Question 290464: I have two different types of ratio word problems that I"m hung up on. I'm not get the equation I think.
Problem 1: If the ratio o freshmen to sophmores it 4:5 and there are 120 freshmen how many sophmores are there?
Problem 2: A softball players batting average is the ration of hits made to the number of times at bat. If Sylvia's batting average is 0.40 how many hits did she get in 25 times at bat?
thank you for the help!
Click here to see answer by richwmiller(17219)

Question 290569: I need help solving this equation. Thank you ahead of time for your help.
5/6(x-1) - 2/3(2x+1) = 3

Please note that 5/6 and 2/3 are fractions but not sure how to make the line straight.
Click here to see answer by stanbon(75887)

Question 290574: Please can you help, this is my 10 year old daughter's homework!
I have tried lots of different possibilities.
x+a=750
x-a=34
what is the value of x?
what is the value of a?
Click here to see answer by Earlsdon(6294)

Question 290572: 3=(x/9)-2
Click here to see answer by checkley77(12844)

Question 290601: Joley used a $20.00 gift certificate to help pay for dinner for her self and a friend. After an 18% tip was added to the bill,the $20.oo was deducted. the amount she paid was $8.90. what was the original bill?
Click here to see answer by richwmiller(17219)

Question 290614: The sum of two consecutive numbers is 49. What is the lesser number?
Click here to see answer by stanbon(75887)

Question 290615: George is 5 times as old as his son. In 15 years he will be only twice as old as his son. How old will his son be in 15 years?
Click here to see answer by stanbon(75887)

Question 290622: A shoe store sold 340 pairs of shoes in one day. The number of pairs of athletic shoes sold was 4 more than twice the number of pairs of dress shoes sold. How many pairs of athletic shoes were sold?
Click here to see answer by stanbon(75887)

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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