http://www.algebra.com New Solutions by tutors en-us Copyright Algebra.Com Thu, 17 May 2012 02:38:00 -0000 Thu, 17 May 2012 02:38:00 -0000 webmaster@algebra.com webmaster@algebra.com http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611847 This problem was solved by Alan3354: can you solve this? 9x^2+16y^2+32y-128=0 ccf2b307-086a-3056-81c1-ab86c9667b6e Wed, 16 May 2012 21:38:29 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611813 This problem was solved by Alan3354: i need help with Systems of Equations Linear Equations 2x-y=6 x+y=-3 f29fb48a-b617-3ccc-b2e1-e94804d64162 Wed, 16 May 2012 20:44:17 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611828 This problem was solved by scott8148: The answer to 5 divided by 99 is 19.8 but I don't understand where the 8 comes from. I figured out that 5x19=95 so then I subtracted 95 from 99 & that leaves 4, not 8 so how does that work? Thanks. 5020d2cf-a5e5-3e69-95a5-e4ccbf437fd6 Wed, 16 May 2012 20:29:40 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611820 This problem was solved by scott8148: I have tried to get these on my own and I have no idea how..Write expression representing area of rectangle given length is (x+3) and width (3x+4) 4507fd54-0680-3c0f-975a-3bce54687ff3 Wed, 16 May 2012 20:28:11 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611806 This problem was solved by stanbon: The odds against event A are occurring 3:1 and the odds in favor of event B are 3:5 what is the probability that at least one of these independent events occurs? b633ab3f-8591-3bf4-9bcb-0e76ef3d41fa Wed, 16 May 2012 20:16:44 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611801 This problem was solved by stanbon: 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? 89f027e0-0373-3359-9141-c294bb93e098 Wed, 16 May 2012 20:04:52 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611792 This problem was solved by josmiceli: Can you please walk me through the steps to solve this problem? (x-1)/(x+3)=(x+2)/(x-4) a6d283b2-0f0d-3cf5-8d95-7c266504baba Wed, 16 May 2012 20:03:50 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611758 This problem was solved by Alan3354: Algebra 2 independent and dependent probability 03d78924-9297-359c-a6ed-f4b235e62627 Wed, 16 May 2012 20:02:49 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611805 This problem was solved by Alan3354: find the absolute value |7/4| 4aabb4ef-de91-3691-8141-1a9649f5579d Wed, 16 May 2012 20:00:08 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611799 This problem was solved by radh: 4(4x+3) use distributive property to multipy 7d6a31ca-dbf9-33be-ba44-53470166b29e Wed, 16 May 2012 19:56:47 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611792 This problem was solved by stanbon: Can you please walk me through the steps to solve this problem? (x-1)/(x+3)=(x+2)/(x-4) 85424a23-544c-362d-97de-cef1e39d1cc4 Wed, 16 May 2012 19:56:32 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611784 This problem was solved by stanbon: 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? ac1c0725-c377-35d2-aa25-10383eacf925 Wed, 16 May 2012 19:48:53 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611774 This problem was solved by lwsshak3: Write the equation of the hyperbola with foci at (1, 5) and (7, 5) and with vertices at (2, 5) and (6, 5). My incorrect answer was (x-4)^2/4 - (y+5)^2/5 = 1 e1e9a0bd-ea8a-3276-81e6-f0f1fa127fe1 Wed, 16 May 2012 19:39:50 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611785 This problem was solved by Alan3354: two numbers have a product of 45 and a difference of 12, what are these two numbers? ba87849a-08c9-377e-af45-c84b2365bddc Wed, 16 May 2012 19:33:27 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=40139 This problem was solved by tomlaidlaw: THE GRAZING GOAT Zoe the goat is tied by a rope to one corner of a 15 meter by 25 meter barn in the middle of a large, grassy field. Over what area of the field can Zoe graze if the rope is: a) 10 meters long? b) 20 meters long? c) 30 meters long? d) 40 meters long? e) Zoe is happiest when she has at least 400 m2 to graze. What possible lengths of rope could be used? 16621fa1-581e-322a-84b6-587474185a41 Wed, 16 May 2012 19:26:21 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611782 This problem was solved by Alan3354: If i have 24had of something and give11 away what is the fracti on 258a1be5-4ea2-3028-82bf-e91654141ea6 Wed, 16 May 2012 19:11:20 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611752 This problem was solved by lwsshak3: Verify the identity with steps: (sin3x)/(sinxcosx)=4cosx-secx dd2f5efa-baa8-37c9-8a62-342baa954f5c Wed, 16 May 2012 19:10:54 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611777 This problem was solved by solver91311: How would you explain to your friend the steps of evaluating the expression (10x2 - 3x + 11) by replacing x with a number, that is not 0 or 1? 22399175-a453-371a-a51c-c4c1dcc5b7c4 Wed, 16 May 2012 18:58:23 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611768 This problem was solved by stanbon: solve the equation in the interval [0,2π); sinx-cosx-tanx=-1 29993f30-5864-34d3-8597-aed005c9968e Wed, 16 May 2012 18:57:07 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611773 This problem was solved by Alan3354: A stunt diver jumps from the top of a 40-meter platform. The diver's height above the water can be modeled by the function h=-5t^2+10t+40, where h is height in meters and t is time in seconds. Find the time it takes the diver to reach the water. 5e20dcc6-d7c7-3348-aa9c-b0d6af262304 Wed, 16 May 2012 18:46:18 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611747 This problem was solved by Alan3354: I have a real life algebra problem.....what is the impact of a train traveling at 20 km/hr on a stationary vehicle? How would that force of gravity affect the passenger inside the vehicle? 02846400-33bf-32c8-a105-f4c473c8ae8e Wed, 16 May 2012 18:44:44 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611755 This problem was solved by Alan3354: Write the sum of three consecutive integers as an expression and simplify. Let n be the first integer. 5aff9c96-026b-3b08-bdd3-3ddb2e7dfa48 Wed, 16 May 2012 18:40:09 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611764 This problem was solved by stanbon: identifying vertex of each parabola then sketch graph. y=-1/2(x-6)^2-4 0188c676-b401-3d31-b355-4af05524f9a5 Wed, 16 May 2012 18:38:20 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611769 This problem was solved by Alan3354: If you choose one boy out of 9 boys and one girl out of 16 girls, how many ways can this be done? f7846b9b-8630-3822-a929-7fb3dde5d7c5 Wed, 16 May 2012 18:37:08 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=611754 This problem was solved by Alan3354: I don't understand how to graph. x+y= -6 2797d1a6-a00c-3abc-9034-43683a467f6d Wed, 16 May 2012 18:33:48 -0006