Questions on Algebra: Equations answered by real tutors!

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Question 35917: 3x-y=21
2x+y=4
Describe a first step for solving each system using elimination. then solve each system.
Click here to see answer by tran3209(100)

Question 35920: Describe a first step for solving each system using elimination. Then solve each system.
2x-y=6
-3x+4y=1
Click here to see answer by checkley71(8403)

Question 35918: Describe a first step for solving each system using elimination. Then solve each system.
3x+4y=-10
5x-2y=18
Click here to see answer by checkley71(8403)

Question 35967:
They are asking me to describe a first step for solving each system using elimination. Then solve each system.
3x-y=21
2x+y=4

3x+4=-10
5x-2y=18

2x-y=6
-3x+4y=1

x-y=12
x+y=22

Click here to see answer by checkley71(8403)

Question 35970: They are asking me to solve each system using elimination and to check my solution.
2p-3t=4
3p+2t=6
Click here to see answer by checkley71(8403)

Question 36012: The length of a kangaroo's leap can be up to 6 1/2 times its height. If a kangaroo is 6 3/4 feet tall, about how far can it jump?
Please write a proper algebraic equation and solve. Please declare the variable and check.
Click here to see answer by checkley71(8403)

Question 36050: please help me......when counting the amount of blood at the hospital blood bank meredith determined that about .4 of the blood was type O and about 1/2 of the blood type was type A. What FRACTION of the blood is neither type O nor type A?
please write a proper algebraic equation and solve. and declaire a variable.
Click here to see answer by Nate(3500)

Question 35968: They are asking me to describe a first step for solving each system using elimination. Then solve each system.
2r-3n=13
8r+3n=7

5a+6b=54
3a-3b=17

x+y=6
x+3y=10

2p-5q=6
4p+3q=-1

3b+10s=48
7b+4s=54
Click here to see answer by elima(1433)

Question 36055: Rick and Myra collect stamps. Rick has 150 fewer stamps than Myra. Together they have collected 500 stamps. How many stamps does each person have in their collection?
Click here to see answer by Prithwis(166)

Question 36065: solve for x: sqaure root(3x+10) minus square root(x+3)=-1

Click here to see answer by Prithwis(166)

Question 36085: can someone please check my answers
x=y to 2nd z to 3rd
if y=3 and z=2
MY ANSWER X=3*3*2*2*2=72; x=72
x=y to the 2nd*z over t
if y=2, z=8 and t=4
MY ANSWER X=2*2*8/4=8;X=8
yx to the 2nd=zt
if y=3, z=1 and t=27
MY ANSWER 3*3*3=1*27;x=3
The last problem has another solution: x=-3
All your work looks good.
Cheers,
Stan H

Click here to see answer by stanbon(75887)

Question 36156: Square root of 12x^3
Click here to see answer by stanbon(75887)

Question 36189: how do i factor 9x-3y+6?
Click here to see answer by rapaljer(4671)

Question 36182: My son has an algebra test and I don't understand how to get the answers to the following problems. I didn't do any good in algebra when I was in school which has been over 22 years but the internet has helped me learn alot, so that I can help him.
Solve for x. 15-7/8x=50 I know the answer is -40 because my sons teacher gives them the answers when they get it wrong, But how do I get the answer of -40?
Solve for x. 5/3x+10=20. I know the answer is 6. I told my son to take 3 and times it by 3 and then divide by 5 and then you come up with the answer of 6. Please explain how it is done? All of your help is greatly appreciated. Thanks alot.
Click here to see answer by venugopalramana(3286)

Question 36165: solve by elimination
2x-3y=1
12x-18y=6
show work
Click here to see answer by Prithwis(166)

Question 36150: simplify:
x^2+x-12
----------------
2x^2-5x-3
Click here to see answer by vidhyak(98)

Question 36269: 2(x^2 + 4y) + 3 (x^2 - 2y)
Click here to see answer by benni1013(206)

Question 36280: y=x+1
y=-2x-4 please help??????
Click here to see answer by vidhyak(98)

Question 36280: y=x+1
y=-2x-4 please help??????
Click here to see answer by checkley71(8403)

Question 36036: what is
1. 2(3x-5)+2(60)= 180
2. Find the area of a rectangluar tennis court if the perimeter is 480 feet. the length of the court is six feet more than twice the width.
i dont understand please help!!!
Click here to see answer by tran3209(100)

Question 36013: When counting the amount of blood at the hospital blood bank, Meredith determined that about .4 of the blood was type O and about 1/4 of the blood was type A. What FRACTION of the blood is neither type O nor type A?
Please write a proper algebraic equations and solve. Please declare your variable and check.
Thank you
Click here to see answer by tran3209(100)

Question 36412: (square root of x+11)=(square root of x)+1
Click here to see answer by ilana(307)

Question 36422: simplify: (x^2-6x+8)/(x^2+3x-28) *(x^2+6x-7)/(x^2-3x+2)
Click here to see answer by ilana(307)

Question 36422: simplify: (x^2-6x+8)/(x^2+3x-28) *(x^2+6x-7)/(x^2-3x+2)
Click here to see answer by vidhyak(98)

Question 36433: Use elimination to solve the systems of equations.
-3x+4y=6
3x+8y=-6
Click here to see answer by checkley71(8403)

Question 36417: please help i can't get it
y over y^2-49 + 7 over y^2+8y+7
show work
Click here to see answer by rapaljer(4671)

Question 36459: m^2-16 8-2m
__________ divide by ________
m^2-6m+9 m-4m-12

show work

Click here to see answer by rapaljer(4671)

Question 36429: I need help in doing this.
For which system(s)is (2,3)the solution?
I know I have to plug in 2 for x and 3 for y
A)y = 2x-1 and y = 1/2x +2
B)y = 1/4x + 5/2 and y = -3x + 3
C)y = x + 1 and y = -x + 5
D)y = 3x - 3 and y = -2x + 7
Click here to see answer by elima(1433)

Question 36599: A company allocates a budget of not more than $3000 per month to maintain a car and two lorries.I want to use "x" and mathematical symbols to rewrite the following statement.

Click here to see answer by checkley71(8403)

Question 36670: SIMPLY THIS EQUATION
(a + b)^2 - (a - b)^2 divided by 2ab
Click here to see answer by vidhyak(98)

Question 36672: -2y=26 i do not remember how to do this kind of problem

Click here to see answer by vidhyak(98)

Question 36671: (3x+4)(2x-2) - (2x+1)(x+3)
Click here to see answer by vidhyak(98)

Question 36750: x+4/2= 2x-3/3
Click here to see answer by strawberry(4)

Question 36768: I would greatly aappreciate some help with the following problem.
Solve and please show work.
x^2 - 2x - 15= 0
Thank you!
Click here to see answer by longjonsilver(2297)

Question 36766: I would appreciate the kindness of your vauled help.
I have many to do!!!
Solve and show work!
(2y + 6) (y - 3) = 0
Click here to see answer by longjonsilver(2297)

Question 36765: These are so difficult for me and I have over 75 to do. Can someone help me? Thank you!
This is a hard one!!!!
must solve and show work
x(x-3) + 4x-3 = 8x + x(3+x)
Click here to see answer by longjonsilver(2297)

Question 36764: Hi there! Can some one help me solve this thing? This is a HARD one! Thank you!!!
MUST FIND THE PRODUCT OR QUOIENT AND SHOW ALL WORK
*** THE PROBLEM DOES NOT HAVE PARENTHESIS AND IS SET UP AS TWO FRACTIONS ONE DIVIDED BY THE OTHER, BUT I WILL PUT THEM IN FOR EASE TO READ!
(2a^2) / (a+1) divided by (a) / (a^2+4a+3)
Click here to see answer by longjonsilver(2297)

Question 36763: Can someone be so kind as to help me solve this??? Please and a great big thank you! This is a HARD ONE!!!
Find the product or quoient and show work!
(4a + 8) / (a^2 - 25) x (a - 5) / (5a + 10)
NOTE: THE PROBLEM DOES NOT HAVE PARENTHESIS, BUT I USED TO SHOW. IT IS SET UP AS ONE FRACTION TIMES THE OTHER!
Click here to see answer by longjonsilver(2297)

Question 36804: Can you answer the following and show the working out?
-3x + 27 = 13 - x
-3x+27+x = 13-x+x
-3x+x+27 = 13
-2x+27-27 = 13-27
-2x =-14
2x = 14
2x/2 = 14/2
x = 7 is required solution

Click here to see answer by imran(2)

Question 36815: 3(s+1)-(s-2)=22s solve for s
Click here to see answer by vidhyak(98)

Question 36880: (2/3)(a-18)=-6
Click here to see answer by stanbon(75887)

Question 36884: simplify: 3x+5-xy+2yx-5x=2
I think the answer is is -2x+xy+7

Click here to see answer by checkley71(8403)

Question 36917: if S varies directly as t^2, and s=150 when t=5 find S when t=4
Click here to see answer by checkley71(8403)

Question 36935: Please solve and show all work.
I hope I enter the radical sign in correctly ( I am new to the formula plotting system), but if I do not the radical goes over x + 12. Please let me know if I entered correctly!
x=
Click here to see answer by venugopalramana(3286)

Question 36918: if x varies inversely as y^2, and x=3 when y=24, find x when y=6
Click here to see answer by venugopalramana(3286)

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