Questions on Algebra: Equations answered by real tutors!

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Question 587561: help me on
n+4n-22=7n
Click here to see answer by jim_thompson5910(35256)

Question 587393: -4x+9x
Click here to see answer by jim_thompson5910(35256)

Question 588392: a/5=b+3a. Find b
Click here to see answer by jim_thompson5910(35256)

Question 588470: 3(8-n)+2
Click here to see answer by jim_thompson5910(35256)

Question 588606: solve by method of substitution
3x-6y=21
3x+14=y

Click here to see answer by kyawkhant(2)

Question 588726: Here is a simplified version of the problem I am working on 1*10^-14=(x)(y)
considering, x is 1000 times greater than y. I tried to set up the work like this: 1*10^-14=(1000x)(x), so 1*10^-14=1000x^2. I was easily able to solve for x, but (x*1000)(x) does not equal 1*10^-14. Can you help me?
Click here to see answer by stanbon(75887)

Question 588787: translate the sentence into a formula the perimeter of a square is four times the length of one side answers a: p=4s b:p=4/s c:s=4p d:p=s4 / is a line between the number
Click here to see answer by rfer(16322)

Question 588874: 4a-8=28

Click here to see answer by jim_thompson5910(35256)

Question 588879: 1-2x-5x=1 solve for x
Click here to see answer by jim_thompson5910(35256)

Question 588906: d=vt solve for v
Click here to see answer by jim_thompson5910(35256)

Question 588910: -27=8x-5x
Click here to see answer by jim_thompson5910(35256)

Question 588897: I need help solving this math problem. Can you help me solve? Thank you.
If f(x) = 2x - x� + 1, find f(x-3)
Click here to see answer by Edwin McCravy(20054)

Question 588770: If , then what value is ?
Click here to see answer by KMST(5328)

Question 589154: can someone help me find the values of x for which the expression the square root of (x-1)(x+3) has real values?
I tried and I got x is greater than or equal to 1 and x is less than or equal to -3
Click here to see answer by ankor@dixie-net.com(22740)

Question 589339: -69=7v-6
Click here to see answer by stanbon(75887)

Question 589454: okay. my question is 4m+7=43.8
4m=43.8-7
4m=36.8 NOW what do i do, To finish the answer
because i don't know what to do with the 4m
HELP !!!!!!!!!!!
Click here to see answer by nerdybill(7384)

Question 589575: Here is my problem. I have no clue how to set this up.
The U.S. Centers for Disease Control recommends that for a typical 2000-calorie daily diet, no more than 65 g of fat be consumed. In the first three days of a four-day vacation, Teresa consumed 55 g, 80 g, and 70 g of fat. Determine how many grams of fat Teresa can consume on the fourth day if she is to average no more than 65 g of fat per day.
Click here to see answer by solver91311(24713)

Question 589593: What is
Click here to see answer by edjones(8007)

Question 589627: I have 5 word problems that I need to know how to write an algebraic expression for: Hope you can help...this is for the 6th grade...
1. Tim wants to buy an AC. The AC costs $45. It costs $2 a day for electricity to run the AC. Write an expression for D days to run the AC. If Time spent $85 to cool with the AC, howm any days did he run it?
2. Tammy wants to rent a movie,membership is $15 and it costs $4 per movie. Write an expression to find the cost to rent the V videos. If Tammy spent $103 at the video store, how many videos did she rent?
3. Sam wants to buy a cell phone. He has $45 now and can save $6 a month. Write an expression to show how much savings he will have after M months. If Sam wants to buy a phone for $63, how many months will it take him to save for it?
4. Sarah bought a membership for some training sessions. The membership costs $12 a month + $10 for each training session. Write an expression to show the cost for S number of sessions. If Sarah spent $62 in March for training sessions, how many did she buy?
5. Betty wants to mail a package. The flat rate is $4 per package + $2 per oz. Write an expression to determine the cost for the package that weighs U oz. If Betty spent $88 to mail her package, how many oz did the package weigh?
I hope this isn't too much. I can usually do these kind of problems but having had a major headache all day today has made it hard for me to even think :)
Thanks for your help!
Click here to see answer by ankor@dixie-net.com(22740)

Question 589964: Hi: I have a composition problem that I'm uncertain how to figure out. If someone could give me directions, I'd be grateful. Cheers! Angela
Problem:
Find the requested function value.
"find (f o g)(8) when f(x)= 4x+2 and g(x)=-7x^2+4x+7"
Wouldn't I put the 8 in the place of all of the x's? Then what would I do?

Click here to see answer by solver91311(24713)

Question 589974: I am in the sixth grade, I need help with this equation. 24x - 10 = 18x - 4. thanks, Skyla

Click here to see answer by solver91311(24713)

Question 589974: I am in the sixth grade, I need help with this equation. 24x - 10 = 18x - 4. thanks, Skyla

Click here to see answer by Edwin McCravy(20054)

Question 590002: Solve the equation. Round the result to the nearest hundredth.
-34=8x-15
Click here to see answer by Alan3354(69443)

Question 590005: Solve the equation. Round the result to the nearest hundredth.
15x-18=37
Click here to see answer by Alan3354(69443)

Question 589959: Hi: I have this word problem that I'm uncertain how to set up to solve. If someone could give me directions, I'd be grateful. Cheers! Angela
Problem:
"daily demand for a certain item is 500/p, where p is the price of the item in dollars. The daily supply is 2p-1. At what price does supply equal demand?

Click here to see answer by ankor@dixie-net.com(22740)

Question 590126: how do I solve these formulas? First I am to plug in the given values and then solve remaining variable.
A = 1/2 bh, b = 23 and h = 91
and
F = ma for F = 920. 1 and a = 136
Please explain because I am lost...
Thank you

Click here to see answer by Alan3354(69443)

Question 590382: 1/2h(1.3+3.2)=26
solve for h
trying to fing height of trapezoid
Click here to see answer by Earlsdon(6294)

Question 590522: 2d+10=6d-10 need help with this equation I graduated 30 years ago and I never took algebra
Click here to see answer by scott8148(6628)

Question 590538: equation 8h=6h-14 does the h cancel each other out. would the answer be h=16
Click here to see answer by Alan3354(69443)

Question 590573: please walk me thru this problem on 2 step equations
2d+10=6d-10
Click here to see answer by richwmiller(17219)

Question 590846: -3x+12=1+5x+10-6x
Click here to see answer by jim_thompson5910(35256)

Question 590848: what is 5x +2=7 basically, you have to find what "X" is
Click here to see answer by jim_thompson5910(35256)

Question 590849: 6x+2=3x-5
Click here to see answer by jim_thompson5910(35256)

Question 590852: How do I solve this? Set up an equation and solve. The length of a rectangle is twice its width, if the perimeter is 36 meters, what are its demensions? what is the formula for this?
Click here to see answer by nerdybill(7384)

Question 590925: 8x-7=15+19x solve please
Click here to see answer by jim_thompson5910(35256)

Question 590931: If then is what?
Click here to see answer by lwsshak3(11628)

Question 590928:
Click here to see answer by ad_alta(240)

Question 590987: The question is and it doesnt make sense to me.
A orange tree at 7ft tall products 18pounds of oranges. At 12ft it products 62pounds. If you minus 62-18=44, 12-7=5 so it is 44/5. Use the equation 44/5(h-7) to figure out a 18ft tree and 20ft tree and how many pounds they have.
Click here to see answer by richwmiller(17219)

Question 591019: It's algebra
M over 15 + 62 = 23 What is m?
Click here to see answer by Alan3354(69443)

Question 591019: It's algebra
M over 15 + 62 = 23 What is m?
Click here to see answer by stanbon(75887)

Question 590955: need help : add the following(2b^4-3b^3+4b^2+13b-7)+(b^5+9b^3+4b^2-4b+3)+(-5b^4+b^2-5b-7), simplify your answer
Click here to see answer by jim_thompson5910(35256)

Question 590599: 2/5x+7=9
Click here to see answer by jim_thompson5910(35256)

Question 590567: 3c-15=17-c
Click here to see answer by jim_thompson5910(35256)

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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