Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

Tutors Answer Your Questions about Expressions-with-variables (FREE)

Question 346947: Find three consecutive odd integers the sum of which is negative twenty-one.

true or false 6 is a solution of x2 + 3 = 9 + 5x.

Click here to see answer by stanbon(57967)

Question 347005: Chad has a total of 5 people in his family.
Sally is Chad's twin sister
Chad's sister Hailey is 4 years older than Chad
Chad's mother was 24 when Chad was born
Chad's father is 3 years older than his mother
1. Write an expression for each family member's age as a function of Chad's age (x). Clearly label each expression. Show or explain all of your work even if you use mental math or a calculator.
2. The average age of the 5 family members is 22. Determine the age of Chad's sister Hailey. Show or explain all of your work even if you use mental math or a calculator.
Click here to see answer by haileytucki(390)

Question 346722: Evaluate the expression and write the result in the form a+bi. -4 - 9i/4-i the quotient is____
Click here to see answer by nyc_function(2733)

Question 347195: Please help me solve 3x^4+13x^2-10=0. I believe I am supposed to use the substitution method, then the quadration formula. Thank you for your help.
Click here to see answer by Fombitz(13828)

Question 347341: f=g+ghm; solve for g?

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Question 347394: I'm supposed to write the algebraic expression in words. I'm not sure how to get this one done. It is : 28-w/3
I was trying: 28 kids want 3 pieces of pizza, how many pizza's (w) are needed?
and: 28 kids want w pieces of pizza, are 3 enough?
Those don't seem to work!
My mom's not sure how to turn this itno a word problem either! Please help!
Thanks
Dev
Click here to see answer by jim_thompson5910(28715)

Question 347401: what does 32t when t =2 mean. I now know that p.7 when p=9 means 9 times 7
Click here to see answer by fractalier(2101)

Question 347567: solve the system of equations using elimination or substitition
x-2y+4z=-19
2x+y-3z=14
3x+y+2z=5
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Question 347688: (7-42a)(3/7)
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Question 347689: 10x+3(1/3-x)
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Question 347721: 3[(2-3)^2 + (6 - 4)^2]
I have not done this in quite a while and was needing some assistance. Can you please take a look at it and qive me some help. Thank you very much.
Click here to see answer by jim_thompson5910(28715)

Question 347729:
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Question 347731:
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Question 347728:
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Question 347733:
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Question 347709: Solve the following literal equation:
Solve f= 1/r sub 1 + 1/r sub 2 for r sub 1
I do not understand these subs...Please help explain
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Question 347734:
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Question 347792: Please help me solve the formula for the indicated variable and evaluate the written formula for the given values to the following:
Volume of a cone: V=Pie r squared h/3 Solve for h. Find h when V=25.12cm to the third and r=2cm. Use 3.14 for pie.
I am so totally lost. I would appreciate your help on this.
Click here to see answer by stanbon(57967)

Question 347787: Solve the following linear equation where y-y sub 1= m (x-x sub 1) for m....
Please help me understand the above problem.
Click here to see answer by Fombitz(13828)

Question 347875: can you please help me do this problem
10/2x+3 divided by 4/10x+5
thanks
Click here to see answer by mananth(12270)

Question 347876: please help
a+b^-1/c
just the b^1is divided by c
Click here to see answer by Alan3354(31522)

Question 347960: how do you find the value of x in this problem 2x+3/4(4x+16)=7 ?
Click here to see answer by stanbon(57967)

Question 347873: can someone please help me i dont understand how to do this
1/x^2 - x/x^2+2x+1 -x/1
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Question 348040: I need help on this question...FIND THE WIDTH AND LENGTH OF EACH RECTANGLE.
The width is one half the length. The perimeter is 54 cm.
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Question 348101:
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Question 348104:
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Question 348098:
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Question 348103:
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Question 348108: It takes a computer 8 days to print all of personalized letters for a national sweepstakes. A new computer is purchased that can do the same job in 5 days. How long would it take to do the job with both computers working on it?
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Question 348095:
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Question 348105:
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Question 348097:
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Question 348096: Tracy, Stacy and Fred assembled a very large puzzle together in 40 hours. If Stacy worked twice as fast as Fred and Tracy worked just as fast as Stacy, how long would it have taken Fred to assemble the puzzle alone?
Click here to see answer by stanbon(57967)

Question 348102:
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Question 348043: haha sorry nevermind i figured it out...thanks for your time any pacience :) tis is a very good site and will probably be using it often
Click here to see answer by Fombitz(13828)

Question 348100:
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Question 348099:
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Question 348220:
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Question 348321: Please help me write the following as an equation: (use x as the variable)
twelve less than the product of eight and a number is less than fifty

Thank you!!!
Click here to see answer by checkley77(12569)

Question 348411: The mean distance of the earth from the sun is 93 million miles. The distance varies by 1.6 million miles. Find the range of distances of the earth from the sun.
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Question 348399: Solve each system by using the elimination method and the substitution method.
4x-3y=-19
3x+2y=24
Click here to see answer by checkley77(12569)

Question 348520: Please help me reduce this equation:
(3/2y) - [3/(2y+4)]
Click here to see answer by mananth(12270)

Question 348579: Solve for x and y: 41x+53y=135
53x+41y=147
Click here to see answer by stanbon(57967)

Question 348579: Solve for x and y: 41x+53y=135
53x+41y=147
Click here to see answer by mananth(12270)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 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