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Question 167187: Please help. I'm not sure if this is the right section. This is from a worksheet.
Find the exact solutions of the system of equations x^2+2y^2=18 and x=2y
I must show my work.
I'm completely lost.
Thanks
Click here to see answer by Fombitz(13828)

Question 167209: Polynomial Word Problem.
A launched rocket has an altitude, in meters, given by the polynomial h+vt-4.92, where h is the height, in meters, from which the launce occurs, at velocity v in meters per second, a t is the number of seconds for which the rocket is airborne. If a rocket is launched from the top of a tower 50 meters high with an initial upward speed of 40 meters per second, what will its height be after 2 seconds?
(round to the nearest tenth)

Click here to see answer by ankor@dixie-net.com(15639)

Question 167228: How do you determine if a polynomial is the difference
of two squares?
Click here to see answer by Mathtut(3670)

Question 167220: Please find all integers b for which a^2 + ba - 50 can be factored.
Click here to see answer by vleith(2825)

Question 167220: Please find all integers b for which a^2 + ba - 50 can be factored.
Click here to see answer by Edwin McCravy(8882)

Question 167233: can someone show me how to do this problem:
Use the Gauss-Jordan method to solve the system of equations.
2x - 5y + z = 11
3x + y - 6z = 1
5x - 4y - 5z = 12
Click here to see answer by Alan3354(30983)

Question 167346: 4m squared-28m+49=0
Please show me how to solve the polynomial equation.
Click here to see answer by Earlsdon(6287)

Question 167322: can someone please help me with this problem.
For the experiment described, write the indicated event in set notation.
A die is tossed twice with the tosses recorded as an ordered pair. Represent the following event as a subset of the sample space: The second toss shows a two.
a.{(1,2),(3,2),(5,2)}
b. {(1,2),(2,2),(4,2),(5,2),(6,2)}
c. {(3,2)}
d. {(1,2),(2,2),(3,2),(4,2),(5,2),(6,2)}
Click here to see answer by aswathytony(47)

Question 167373: Please factor:
(a + 4)^2 - 2(a + 4) + 1
Click here to see answer by aswathytony(47)

Question 167372: Please factor:
y^2 (y+1) - 4y (y+1) - 21 (y+1)
Click here to see answer by oscargut(891)

Question 167393: (x^2-^42^0/3x^6y-^3)^4, it says to evaluate and simplfy. I am completely confused on this one.
Click here to see answer by Alan3354(30983)

Question 167291: What is the answer to the following equation: 3/x^2-1/x+5
Click here to see answer by midwood_trail(310)

Question 167407: A student is asked to solve the equation

x^2 +x - 6 = 5
The student gives the following steps:
(x - 2)(x + 3) = 5
(x - 2) = 5 (x + 3) = 5
x = 7 x = 2
Explain whether or not this is correct, and make any necessary corrections.

Please help me with this one.
Click here to see answer by stanbon(57250)

Question 167406: For a certain time period the ratio of the dollar value of
exports to the dollar value of imports for the United States
was 2 to 3. If the value of exports during that time period
was 48 billion dollars, then what was the value of imports? Please help!
Click here to see answer by stanbon(57250)

Question 167401: Perform the indicated operations: (5x^2-3x+2)+(-3x^2+9x-8)-(x^2+3x-10)
Click here to see answer by stanbon(57250)

Question 167446: 15p^2 - 6 = 7p^2 + 194
Click here to see answer by jojo14344(1512)

Question 167450: A student is asked to solve the equation

x^2 +x - 6 = 5
The student gives the following steps:
(x - 2)(x + 3) = 5
(x - 2) = 5 (x + 3) = 5
x = 7 x = 2
Explain whether or not this is correct, and make any necessary corrections.

Click here to see answer by checkley77(12569)

Question 167463: How do you solve (x-2) cubed?
Click here to see answer by checkley77(12569)

Question 167447: (3x+1)(x-1)= -3x
Click here to see answer by nerdybill(6951)

Question 167556: 64 - (B - 2)^3
Click here to see answer by checkley77(12569)

Question 20681: 2(2x-5)+4(5x+9)
Click here to see answer by samaya(1)

Question 167594: x+1 - x^2
x+3 x^2 + 4x+3
Question reads : X+1 over x+3 -(minus) x^2 over x^2 + 4x + 3
Click here to see answer by stanbon(57250)

Question 167595: 1 - 1 = 6
1+x 3 - x 35
Question reads: 1 over 1 + (plus) X - (minus) 1 over 3 - (minus) X = (EQUALS) 6 OVER 35
Click here to see answer by stanbon(57250)

Question 167612: how do i factor: X^2+14x+49.
(x+7)(x+7)=(x+7)^2

Click here to see answer by Alan3354(30983)

Question 167651: Please help me factor this polynomial completely: .
Click here to see answer by jim_thompson5910(28504)

Question 167675: SOLVE
25x^3-15x^2=18x
Click here to see answer by Alan3354(30983)

Question 167674: SOLVE
X^3-36X=0
Click here to see answer by Alan3354(30983)

Question 167670: factor completely
12x^2+32x+21
Click here to see answer by jim_thompson5910(28504)

Question 167020: Why -3x^2*y^4 and 4x are MONOMIAL
but -18x is POLYNOMIAL?
This question don't have in textbook.
THANK YOU FOR YOUR HELP
Click here to see answer by Alan3354(30983)

Question 167669: factor completely
6a^2-29a+9
Click here to see answer by jim_thompson5910(28504)

Question 167668: factor completely
49x^2+84x+36
Click here to see answer by jim_thompson5910(28504)

Question 167678: I need help solving (5/y)-(2/3)=(-1/4) This is a homework problem and not out of a book. I have 3 pages of solving rational equations homework, if I can understand how to do one, I might be able to do the rest.
According to my teacher, it should not equal zero. I'm lost. I have tried multiplying by y, I end up with 5-2/3y=-1/4y and then don't know what to do. I would appreciate your help, if you can explain what I need to do.
Thanks,
Danielle
Click here to see answer by nerdybill(6951)

Question 167667: factor completely
8a^2+4a-14ab-7b
Click here to see answer by jim_thompson5910(28504)

Question 167680: If R(x)= x+2/1-x, then what is R(0.9)?
Click here to see answer by sowmya(32)

Question 167679: If R(x)= x+2/1-x, then what is R(0.9)?
Click here to see answer by oscargut(891)

Question 167686: Brenda and her husband Randy bicycled cross-country
together. One morning, Brenda rode 30 miles. By traveling
only 5 miles per hour faster and putting in one more hour,
Randy covered twice the distance Brenda covered. What
was the speed of each cyclist?
Click here to see answer by ankor@dixie-net.com(15639)

Question 167687: For a certain time period the ratio of the dollar value of
exports to the dollar value of imports for the United States
was 2 to 3. If the value of exports during that time period
was 48 billion dollars, then what was the value of imports?
Click here to see answer by checkley77(12569)

Question 167682: When all of the grocery carts escape from the supermarket,
it takes Reginald 12 minutes to round them up and bring
them back. Because Norman doesn’t make as much per
hour as Reginald, it takes Norman 18 minutes to do the
same job. How long would it take them working together
to complete the roundup?
Click here to see answer by checkley77(12569)

Question 167681: Factorise:
125x^6 + 59x^3y^3 + 64y^6
Click here to see answer by checkley77(12569)

Question 167666: FACTOR COMPLETELY
-10x^4yz^2-25x^2z^3
Click here to see answer by checkley77(12569)

Question 167596: 3X - 1 = 1 - 6
4X + 7 X+7
Question reads:
3x - (minus) 1 over 4x + (plus) 7 = (equals) 1 -(minus) 6 over x + 9plus) 7.
Click here to see answer by alexpcah(3)

Question 167697: 5m + 40mb^3
Click here to see answer by midwood_trail(310)

Question 167702: find the heigth of the track if x=50

f=(x)=0.004x^3-0.2x^2+5.2x+6
Click here to see answer by jim_thompson5910(28504)

Question 167696: x+1/1 + x - 1/3-x = 6/35
Click here to see answer by jim_thompson5910(28504)

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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, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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