Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 185178: -20=-4x-6x
Click here to see answer by checkley77(12844)

Question 185182: -5(1-5x)+5(-8x-2)=-4x-8x
Click here to see answer by checkley77(12844)

Question 185223: y=-5x^2 x=-1
Click here to see answer by feliz1965(151)

Question 185293: 3/5x-3/7=5/7
Click here to see answer by vleith(2983)

Question 185384: Solve equation for y then find value of for the given value of x
2xy +1 = xy +3; x =2
Click here to see answer by jim_thompson5910(35256)

Question 185432: A=1/2bh solve for b
Click here to see answer by checkley77(12844)

Question 185511: I have a story problem that I need to translate into an equation and solve (with a Let statement). It's easy for me to solve equations, but translating a story problem is just difficult and confuses me.
The problem:
A board 190cm long is cut into three pieces. The second piece is three times the length of the first piece and the third piece is 10cm longer than twice the first piece. How long is each of the three pieces?
Click here to see answer by jim_thompson5910(35256)

Question 185512: Another story problem I can't seem to understand.
Paul has $1.47 in change consisting of pennies, nickels and quarters. He has three more pennies than quarters and one more nickel than pennies. How many of each coin does he have?
Click here to see answer by jnaert08(2)

Question 185531: Cant figure this out. Help Please! :)
The measure of the second angle of a triangle is 50 degrees more than that of the first. The measure of the third angle is 10 degrees less than twice the first. Find the measures of the angles.

Click here to see answer by jim_thompson5910(35256)

Question 185533: Cant figure this out. Help Please! :)
The apartments in Kellys apartment house are numbered consecutively on each floor. The sum of his number and his next door neighbors number is 1419. What are the two numbers>?
Click here to see answer by jim_thompson5910(35256)

Question 185551: 135=-9+8p
Click here to see answer by jim_thompson5910(35256)

Question 185564: Hello. I did the following equation and just want to know if I did the steps correctly? Thank you.
After a 25% reduction, a picnic table is on sale for $120. What was the original price?

I did this:
120 * 0.25 = x
x = 30
120 + 30 = 150
The original price of the picnic table is $150.00

Click here to see answer by edjones(8007)

Question 185576: Find an equation of the line satisfying the given conditions. give the answer in slope-intercept form is possible.
Q- Passing through (3, -4) and parallel to y= 3+2x
In details please
Thank you,
Click here to see answer by jojo14344(1513)

Question 185577: the perimeter of a rectangle is 192 dm if its length twice its breath find the dimensions
Click here to see answer by vleith(2983)

Question 185573: Translate into an equation and solve. After a 25% reduction, a picnic table is on sale for $120. What was the original price?
I was given $160 as the original price and I can figure out with that, BUT how do I get $160 from the information given? I cant go by the original price since thats what I need to find out.
Click here to see answer by ankor@dixie-net.com(22740)

Question 185575: In the problem, find the general linear equation (Ax+By+C=0 ) of the straight line that has the indicated properties.
Q- Passes through the origin and is horizontal
With details please.. Thankss
Click here to see answer by stanbon(75887)

Question 185574: In the problem, find the general linear equation (Ax+By+C=0 ) of the straight line that has the indicated properties.
Q- Has the slope 0 and y- intercept -1/2
Please in details, thank you :)
Click here to see answer by stanbon(75887)

Question 185697: 1/4z = 1/3z - 2
Click here to see answer by jim_thompson5910(35256)

Question 185821: Two angles are complementry. The sum of the measures of the first angle and half of the second angle is 89.5 degrees. Find the measurements of each angle. Please show me the solution.
Click here to see answer by checkley77(12844)

Question 183834: 5x-1=3x+6
Click here to see answer by awang1996(50)

Question 185935: Two angles are complementary. the sum of the measures of the first angle and half of the second angle is 89.5 degrees. Find the measures of each angle. Please walk me through this
Click here to see answer by solver91311(24713)

Question 185882: solve the formula A=1/9si for the variable s
Click here to see answer by feliz1965(151)

Question 186024: the sum of two numbers is twenty-one. Twice the larger is four times the smaller number. Find the two numbers
Click here to see answer by swiemers(10)

Question 186142: Hi. I have an exam tomorrow and I am working on a practice test and I have a question about a problem.
Put each equation into slope-intercept form: y = mx + b.
2x + y = 2
So I got the answer: y = 2x + 2
The answer key says: y = -2x + 2
How did it become a negative -2x? How would I know when doing a problem that something with no negatives become a negative in the answer.
Click here to see answer by jigs_ipan(5)

Question 186141: I am trying to help my ten year old son and am so lost. I am able to figure out for instance, n + 7 = 19. Then they rearranged the problem and asked him to solve 57 - w = 20. Not a clue. Thanks for your help. This is a teacher handwritten worksheet, so I do not have an ISBN. I do know that his school system uses the Everyday Math series.
Click here to see answer by edjones(8007)

Question 186174: 10. Multiply... I know I should know this, but my mind is overloaded with math...!
(2s + 5z)^2 * (s + 3z)^2

Click here to see answer by checkley77(12844)

Question 186247: A grocer mixed two varieties of tea, one that cost $3 per kg with another that cost $4 per kg. How many kg's of each should be used to make a 30 kg blend to sell for $3.40 per kg.
Click here to see answer by checkley77(12844)

Question 186106: Hello.
Perform the operations and simplify:
(a^3)^2/b^-1 / (a^3)-2/b^-1
thanks!
Click here to see answer by ankor@dixie-net.com(22740)

Question 186255: Could you please help me solve this problem?

Find three consecutive integers whose sum is -114.
Click here to see answer by josmiceli(19441)

Question 186371: I'm needing some help with the following problem: Factor each completely. Some may require several steps.
a^4-16
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 186370: I'm needing some help with the following problem: Factor each completely. Some may require several steps.
y^3-8z^3
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 186368: I'm needing some help with the following problem: Factor each completely. Some may require several steps.
3a^4-6a^3+9a^2
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 186422: Hi, I am more of an older folk here so its not for homework. Actually it was a question asked to me and I have had a hard time to figure it out and its driving me nuts. I also was trying to show someone that there are sites out there for help in which it does not cost you. I think its wonderful you offer this. Ok here it goes. What two numbers when added together equals -6 and what same two numbers when multiplied equals -12. I hope you can help so I can show my friend there are people out there quite kind like you. Thank you
Click here to see answer by jim_thompson5910(35256)

Question 186403: If the formula R=-0.037x + 50.1 can be used to predict the world record in the 400-meter dash x years after 1925, for what years will the world records be 48.6 seconds or less?
Click here to see answer by ankor@dixie-net.com(22740)

Question 186474: I solved this problem and the teacher says it is wrong. Can you point out what is wrong and help me solve?
15/3y - (-80/10x)
5/y +8/x
13/xy
Click here to see answer by stanbon(75887)

Question 186496: Hello.
I'm needing some help with checking what I did wrong on this problem:
Factor each completely. Some may require several steps
3n^2+14n-5
thanks!
n=[-14+ root((14^2 - 4*3*(-5))]/2*3 = [-14 + root(196 + 60)]/6 = [-14+16]/6= 1/3
n=[-14- root((14^2 - 4*3*(-5))]/2*3 = [-14 - root(196 + 60)]/6 = [-14-16]/6= -5
The result is n=1/3 and n=-5
Click here to see answer by Earlsdon(6294)

Question 186497: Hello.
I'm needing some help with checking what I did wrong on this problem:
Factor each completely. Some may require several steps.
a^4 - 16
thanks!
Click here to see answer by Earlsdon(6294)

Question 186510: What is the pattern?
2 - 1
3 - 3
4 - 6
5 - 10
6 - 15
7 - 21
8 - 28
9 - 36
10- 45
I have no idea what the pattern is
thanks for helping
Click here to see answer by stanbon(75887)

Question 186516: f=9g solve for g
Click here to see answer by rapaljer(4671)

Question 186484: Hello.
I'm needing some help with checking what I did wrong on this problem:
Perform the indicated operation and simplify
(2/3x^-3y^5)(9/4x^3y^-3)
thanks!
Click here to see answer by rapaljer(4671)

Question 186483: Hello.
I'm needing some help with checking what I did wrong on this problem:
Perform the indicated operation and simplify
(2/3x^-3y^5)(9/4x^3y^-3)
thanks!
Click here to see answer by rapaljer(4671)

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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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, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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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