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Question 610509:
Click here to see answer by flame8855(424)

Question 610527: http://www.illiniwest.org/vimages/shared/vnews/stories/49d279d35e563/Notes%20Ch%2012.3.pdf
Please help me with #8. Thank you.
Click here to see answer by nerdybill(7384)

Question 610538: http://www.illiniwest.org/vimages/shared/vnews/stories/49d279d35e563/Notes%20Ch%2012.3.pdf
Please help me with #13. Thank you.
Click here to see answer by Alan3354(69443)

Question 610548: 1 1/2 - 3/4=
Click here to see answer by Alan3354(69443)

Question 610549: 1 1/2 - 3/4=
Click here to see answer by Alan3354(69443)

Question 610714: Age of father is '4x' when his son is 'x' years old. When son is '5x' what will be the age of father?
Click here to see answer by flame8855(424)

Question 610692:
Click here to see answer by flame8855(424)

Question 610819: A roller skating rink charges an admission fee of $5 for members and $10 for non-members. One day it made at least $300. Which of these combinations could have come that day?
Click here to see answer by math-vortex(648)

Question 610890: what length is 37.5% of 44 mm?
Click here to see answer by ewatrrr(24785)

Question 610900: I have to takea graduation test of algebra tommorow an
I took this class last year i just need help to refresh my memory
Click here to see answer by solver91311(24713)

Question 610924: factor
Click here to see answer by solver91311(24713)

Question 610924: factor
Click here to see answer by radh(108)

Question 610958: The sum of 2 numbers is 47 and their difference is 13. What are the numbers ?
Click here to see answer by radh(108)

Question 610971: 120 is what percent of 300
Click here to see answer by radh(108)

Question 611016: Can you teach me how to factor and how to solve x for quadratic equations?
Click here to see answer by Edwin McCravy(20054)

Question 611014: Can you teach me how to factor and how to solve for x in quadratic equations?
Click here to see answer by Edwin McCravy(20054)

Question 611012: What is the unit rate for 300:12?
Click here to see answer by stanbon(75887)

Question 610987: Solve:-
6{+2*5(2/5*+2)/2}/2
Click here to see answer by lynnlo(4176)

Question 611111: Simplify:

3x^2 - 19x -14
��
6x^2 - 11x - 10
Click here to see answer by vleith(2983)

Question 611127: Solve; 4x-8<10+6x
Click here to see answer by stanbon(75887)

Question 611165: How many ways can 3 people selected from 7 be arragned in a row of chairs?
336
210
35
None
Click here to see answer by ewatrrr(24785)

Question 611303: X^2-x=12
We have worked answer out to be 4 but can't show working as to how we got there could u help??
Click here to see answer by Alan3354(69443)

Question 611335: How many solutions exist for the system of equations?
2x-3y=14
4x-6y=21
Click here to see answer by ewatrrr(24785)

Question 611356: There are 7 people and 2 people get chosen there are 3 boys and 4 girls how many combinations if there both girls
Click here to see answer by jim_thompson5910(35256)

Question 611509: Find the partial fraction decomposition for each rational expression.
(11-2x)/(x^2-8x+16)
Click here to see answer by jsmallt9(3758)

Question 611160: I've missed a lot of school because I've been sick and I'm trying to get all of my work done. The notes and books don't explain how to do all of the problems really well and I need help with the following questions. Please explain to me how to get the answers. Thanks!
1. Which of the following is a quadratic equation that has roots of 2 1/2 and 2/3?
A) 5x^2 + 11x - 7 = 0
B) 6x^2 - 19x + 10 = 0
C) 5x^2 + 11x - 10 = 0
D) 6x^2 + 19x - 10 = 0

2. Which system has infinitely many solutions?
A) y = 2x + 6
y - 8x = 21
B) 4x - 4y = 4
x - y = 1
C) 4x + 2y = 5
x - 2y = 9
D) none of these

3. Which describes the number and type of roots of the equation x^3 - 4x^2 + 50x + 7= 0?
A) 1 positive, 2 negative
B) 2 positive, 1 negative
C) 3 negative
D) 3 positive

4. Evaluate i^14.
A) i
B) -1
C) -i
D) 1

5. Solve w^4 + 2w^2 - 24 = 0.

6. What type of polynomial is 79x^9?
A) monomial
B) binomial
C) trinomial
D) none of these

7. Find the solution for the determinant.
1 20
5 -5
A) 100
B) 105
C) -105
D) -95

8. Find the solution for the determinant.
-4 2
8 -10
A) 24
B) -56
C) 56
D) -24

9. The result of multiplying a 2x3 matrix and a 3x4 matrix is a 2x4 matrix.
A) True
B) False

10. ____________________ uses determinants to solve systems of equations.
A) elimination
B) substitution
C) graphing
D) Cramer's Rule

11. In order to _______ matrices, you must always have the same dimensions.
A) multiply
B) add
C) invert
D) none of these

12. It is not possible to multiply a 2x5 matrix and a 5x4 matrix.
A) True
B) False

13. When using Cramer's Rule to solve the system of equations containing
2x - y = 1
-4x + 3y = 0
the numerator for the y variable looks like which determinants?

14. Solve by completing the square x2 - 6x - 4 = 0.

15. When using Cramer's Rule to solve the system of equations containing
5x - y = 5
-3x + y = -9
the denominator for the x and y variables looks like which of these determinants?

16. What kind of solutions does ax^2 - bx + c = 0 have if b^2 - 4ac < 0?
A) two real solutions
B) two complex solutions
C) one complex solution
D) one real solutions

17. What type of polynomial is -25x4 - 21?
A) monomial
B) binomial
C) trinomial
D) none of these

18. Use synthetic substitution to find f(-2) for f(x) = x4 - 4x3 - 4x + 6
A) 22
B) 56
C) 62
D) 32

19. It is possible to multiply a 3x4 matrix and a 2x2 matrix.
A) True
B) False

20. When using Cramer's Rule to solve the system of equations containing
3x - 6y = 9
4x + 2y = -6
the numerator for the x variable looks like which of these determinants?

21. Solve by completing the square x2 - 2x - 5 = 0.

22. If y = 4x + 14, what is the value of y � -4?

23. What is the solution to the system containing these equations?
y = x + 5
x + y = 9

24. It is not possible to add a 2x4 matrix and a 4x2 matrix.
A) True
B) False

25. Solve by completing the square 3x2 - 8x - 6 = 0.

26. Solve the quadratic equation x2 + 8x + 12 = 0.

27. If x + 3y = 12 and 2/3X- y = 5, what is the value of x?

28. One factor of x3 - 3x2 - 4x + 12 is x + 2. Find the remaining factors.

29. What is the solution for the determinant?
1/2 -4
-1/4 -2

30. What type of polynomial is 5x^2 - 11x + 2?

31. Which value is the sum of the solutions to x^2 - 3x - 18 = 0?
Click here to see answer by jsmallt9(3758)

Question 611464: -2+(-3)
Click here to see answer by Cherish7(7)

Question 611533: I need help bad
Click here to see answer by richwmiller(17219)

Question 611600: Write a recursive rule for 1/3, 3, 27, 81, 729...
Please help!! I have no idea what to do or even try!
Thanks in advance!
Click here to see answer by scott8148(6628)

Question 611635: Log x = -2
Click here to see answer by solver91311(24713)

Question 611620: Write an equation for a function that has a vertex (3,1) and goes through point (-2,101)?
Click here to see answer by Edwin McCravy(20054)

Question 611569: 4x+13=21
Click here to see answer by lynnlo(4176)

Question 611717: Find an equation of the line containing the given pair of points. (1/4 , -1/2) and (3/4 , 2). What is the equation of the line?
Click here to see answer by lwsshak3(11628)

Question 611735: solve -8d-5greater than or equal to 2d-3
Click here to see answer by rfer(16322)

Question 611712: Find an equation of the line containing the given pair of points. (-1,-6) and (-7,-5)
Click here to see answer by rfer(16322)

Question 611784: Your school newspaper has an editor in chief and an assistant editor in chief. The staff of the newspaper has 12 students. In how many ways can students be chosen for these two positions?
Click here to see answer by stanbon(75887)

Question 611758: Algebra 2 independent and dependent probability
Click here to see answer by Alan3354(69443)

Question 611801: Five representatives from a senior class of 280 students are to be chosen for student council. In how many ways can students be chosen to represent the senior class on student council?
Click here to see answer by stanbon(75887)

Question 612037: The full pipe for a tank can fill the tank 45 minutes. The drain pipe can empty the tank in 30 minutes. If both pipes are accidentally left open, how long will it take to empty a full tank?
Click here to see answer by Alan3354(69443)

Question 612049: 3x+4
Click here to see answer by Alan3354(69443)

Question 612086: Hi! I need help with 5 algebra 1 math problems..i don't understand them at all.:( could u please email me back ASAP. I need to know the answers to the 5 problems but also how to do them!!!
Click here to see answer by solver91311(24713)

Question 612095: if 3 cats can catch 3 rats in 3 minutes, how many cats are needed to catch 100 rats in 100 minutes?
Click here to see answer by Alan3354(69443)

Question 612095: if 3 cats can catch 3 rats in 3 minutes, how many cats are needed to catch 100 rats in 100 minutes?
Click here to see answer by Edwin McCravy(20054)

Question 612058: 8x4=
Click here to see answer by Johngift(2)

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, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650