Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 66535: 1. y=3x-1
If x=-2 what is the value of Y.
2. for the equation y = x-5 find the missing value in each ordered pair
(2, ??)
(-3,??)
3. x-y =3
If x =-6 what is the value of Y
Click here to see answer by Leah_Taylor(3)

Question 66544: solve for "a": 2a + 4 = 3b - 5
Click here to see answer by Nate(3500)

Question 66521: how can I rewrite without parethesis use distribution using mailman property.
3+(+^3+^2-2+1)
how can I simplify this in radical form?
squareroot of 3+2 squareroot of 3=
Click here to see answer by stanbon(75887)

Question 66554: a number multiplied by -4 is 24.
how can I write an algebratic equation for this sentence
help.
thank you
Click here to see answer by stanbon(75887)

Question 66553: 2 1/8x - 1/5=(5^2)(2^-3)
I know that the answer is supposed to be 133/85. I have -94 18/85 by doing the following:
2 1/8x-1/5=(25)(-8)
2 1/8x-1/5=-200
2 1/8x = -1000/5 + 1/5
2 1/8X = -1001/5
(8/17)17/8x=-1001/5(8/17)
x=-8008/85

Click here to see answer by stanbon(75887)

Question 66555: -32is 6.4 times a number .
how can I write an algebratic equation for this sentence
help.
thank you so much for your help.
Click here to see answer by Earlsdon(6294)

Question 66583: 3y-20=8y
Click here to see answer by tutorcecilia(2152)

Question 66429: solve liner equation: 2x+6=10x+6
Click here to see answer by checkley71(8403)

Question 66602: subtract and simplify
2 y
---- - ------
5 y-2
I was under the impression to just minus across but do not come up with the answers they have for me. Could someone please help me out on this? Thank you so much! The answers I have are:
A) -3y-2
--------
y-2
B) -3y-2
---------
5(y-2)
C)-3y-4
--------
5(y-2)
D) -3y-4
--------
y-2
Thank you again!
Click here to see answer by checkley71(8403)

Question 66470: 7(3x+4)=8(2x+5)+13
Click here to see answer by funmath(2933)

Question 66617: Multiply:
n^2-n-20 n^2+5n
-------- * -------
2n^2 n^2-25
Could you please help me with this one? Thank you so much!
Click here to see answer by stanbon(75887)

Question 66618: Write in simplest form:
48a^5b
-------
12ab^2
I believe the answer is:
4a^4b
Is this the correct solution? Thank you for your help!
Click here to see answer by Earlsdon(6294)

Question 66619: Subtract and write in simplest form:
2 y
---- - -----
5 y-2
Could anyone give me a hand understanding the applications on this. Thank you very, very much!!
Click here to see answer by stanbon(75887)

Question 66615: Solve:
x 9
----- -4 = -------
x-9 x-9
The answers to this is either -9, 9, -6, or no solution.
I tried plugging the numbers in but it does not seem to work so I believe the answer is no solution. Is this correct? Thank you very much!
Click here to see answer by stanbon(75887)

Question 66589: Compare equations with one variable to equations with two variables.
How are they alike? How are they different?

What if an equation had three variables?
Click here to see answer by Poohbear272(22)

Question 66655: solve. -7x+1+8x=x+1
Click here to see answer by sister_insomnia(8)

Question 66659: solve. 4(7x+10)=3(9x-5)+20
Click here to see answer by checkley71(8403)

Question 66676: Multiply:
-3a^2b 14a^3b^2
--------- * ---------
35a^5 -9b^4
I have four answers to choose form but can not seem to figure this problem out! Here aer the answers:
A. 2/15b
b. a/16
C. a/15
D. 2b/15
Thank you for you wonderful help!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 66698: Solve. 4(x+2)-3x=x-6
Click here to see answer by Nate(3500)

Question 66695: Solve. 8x-1-x=7x+1
Click here to see answer by Nate(3500)

Question 66677: I would like some help on thsi problem please:
x 5
----- +1 = -----
x-5 x-5
Thank you for your help!!
I believe this problem there is no solution but if there is it could only be:
5
-5
or no solution
Thank you again!
Click here to see answer by Earlsdon(6294)

Question 66723: My sister wanted help with her Algebra but I haven't had any algebra in almost 10 years. I have just enough knowledge for it to be dangerous :) Thanks
5x-(2x-10)=35
Click here to see answer by sprolden(40)

Question 66727: 3x-2/4+1=2x-3/2
I have tried for an hour to figure this problem. Below is how I am trying to solve it.
3x-2-2x/4+1=-3/2
1x-2/4+1=-3/2
1x-2+2/4+1=-3+2/2
1x/4+1=-1/2
1x/4+1-1=-3/2
1x/4*4/1x=-3/2*4/1
x=-12/2or -6
My text book shows the answer as 8
I am ready to pull my hair out. Please help!! Thanks
Click here to see answer by stanbon(75887)

Question 66764: it is estimated the earth is losing 4000 species of plants and animals every year. if s represents the number of species living last year how many species are on earth this year?
Click here to see answer by rapaljer(4671)

Question 66763: the quotent when 3 more than a number is divided by 3 less than that same number
Click here to see answer by rapaljer(4671)

Question 66188: Write the expression in simplest form:
4x-28
------
5x-35
I believe the answer would be:
-24x
----
-30x
Leaving the result in simplest form of:
2x
--
3x
Is this correct? Thank you for your help :-)
Click here to see answer by rapaljer(4671)

Question 66780: if the temp. at noon is 78 degrees and at 5:00 it is 58 degrees how much did the temp. change each hour
Click here to see answer by checkley71(8403)

Question 66779: suppose that the temp. outside is dropping at a constant rate. at noon the temp. is 58 degrees and it drops to 58 degrees at 5:00. how much did the temp. change each hour?
Click here to see answer by stanbon(75887)

Question 66654: 10x-0.62=9(x-0.95)
Click here to see answer by checkley71(8403)

Question 66787: The corner section of a football stadium has 15 seats in the first row and 40 rows in all. Each sucessive row contains 2 additional seats. Howmany total seats are in this section?
Click here to see answer by stanbon(75887)

Question 66795: a=2 b=5 c=-4 d=6
4b+5d-c/a
i can get 4.5+5.6- -4/2
=20+30-4/2
=50 2/1
Click here to see answer by Earlsdon(6294)

Question 66795: a=2 b=5 c=-4 d=6
4b+5d-c/a
i can get 4.5+5.6- -4/2
=20+30-4/2
=50 2/1
Click here to see answer by checkley71(8403)

Question 66791: Hi plz could you help me wiv this question..... factorise: (p+q)^2+5(p+q)
it would be a great help! thnk you! oh n the 2 out side the brackets is a squared sign thnx!
Click here to see answer by Earlsdon(6294)

Question 66796: THE SIMPLE INTEREST. I ON A PRINCIPAL OF P DOLLARS AT INTEREST RATE R FOR TIME T, IN YEARS, IS GIVEN BY I=PRT. FIND THE SIMPLE INTEREST ON A PRINCIPAL OF $6000 AT 3% FOR 2 YEARS (3%=0.03)
Click here to see answer by checkley71(8403)

Question 66797: i need help with this badly. i just dont get it.
Write an open sentence involving absolute value.
cant do the number line, but on the number line its x<-5 or x>-1
Click here to see answer by Nate(3500)

Question 66806: 4x+3y=1150
Click here to see answer by stanbon(75887)

Question 66808: Suppose that the temperature outside is dropping at a
constant rate. At noon, the temperature is 70 degrees and it drops to 58 degrees at 5:00 P.M.
How much did the temperature change each hour?
Click here to see answer by Poohbear272(22)

Question 66836: Hi, I need help with the following:
1. Solve by using substitution method. Determine whether equation is independent, dependent or inconsistent.
x=y+3
3x-2y=4

This is what I have so far.. Was I even on the right track?
X=y+3
X=y+3-3
X= -3

2. Solve by substitution or addition, whichever is easier
2y-x=3
X=3y-5

3. Solve by using addition method.
X+ y=13
22x+36y=356

Click here to see answer by checkley71(8403)

Question 66846: Show that 7ac+14ab+28a=7a(c+2b+4). Use values for a,b,c, and d to justify your answer?
Click here to see answer by checkley71(8403)

Question 66850: 7(4W-3)-25W CAN YOU HELP ME SOLVE THIS?I have
7.4w-3-25
28-21-25 now i am lost
Click here to see answer by checkley71(8403)

Question 66898: Use the simple interest formula to find the principal if the
total interest earned was $150 and the rate of interest was 4% for 2 years.
Dollars=P Interest=I Rate of interest=r Time calculated in years=t. Simple interest formula is I=Prt.
Keeping this forumla in mind and the information provided it would seem that 150=P x 0.04 x 2, next step looks like 150=P x 0.08, to get P we will divide 150 by 0.08. This works out to be 1875. So the principal is $1875.
did i do this right?
Click here to see answer by ankor@dixie-net.com(22740)

Question 66946: what is (((13x3)-3)/3)?
Click here to see answer by cassie(1)

Question 66962: i dont want to know the answer i just want to know what i need to do to get the answer
Simplify:
1+2i
----
2-3i
Click here to see answer by ankor@dixie-net.com(22740)

Question 66968: how i can dou that?
Click here to see answer by stanbon(75887)

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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30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 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