http://www.algebra.com Newly Submitted Unsolved Problems en-us Copyright Algebra.Com Thu, 23 May 2013 20:23:00 -0000 Thu, 23 May 2013 20:23:00 -0000 webmaster@algebra.com webmaster@algebra.com http://www.algebra.com/tutors/faq.mpl?key=751991&action=answer_question Click on the link to solve this problem: purse contains four $5 bills, five $10 bills and three $20 bills. Marisa wants to pull two $20 bills out the same time. What type of event is it and the probability of this event occurring? e2d1889f-0fc5-3607-a50d-b881b6e2a4a0 Thu, 23 May 2013 15:17:14 -0006 http://www.algebra.com/tutors/faq.mpl?key=751988&action=answer_question Click on the link to solve this problem: 3.Let f(x) = 2x 1 and g(x) = 5 x2. Find f(g(x) and g(f(x), and simplify the result. Can you please show work ? Thank You 77d38377-e81f-3f8e-952d-71a51bf30ee1 Thu, 23 May 2013 14:57:54 -0006 http://www.algebra.com/tutors/faq.mpl?key=751986&action=answer_question Click on the link to solve this problem: Im doing Elimination using Multiplication. The problem is 1/4x + 4y = 2 3/4 and 3x + 1/2y = 9 1/4 423c25d0-6a95-3315-8b21-5ac21bb9f25d Thu, 23 May 2013 14:52:07 -0006 http://www.algebra.com/tutors/faq.mpl?key=751983&action=answer_question Click on the link to solve this problem: The area of the yard is 48 square meters and 6 meters long. How wide is the yard? 7a029175-05a1-35cf-a41a-d3ef0c8b700f Thu, 23 May 2013 14:47:43 -0006 http://www.algebra.com/tutors/faq.mpl?key=751982&action=answer_question Click on the link to solve this problem: how to evalute infinite gometric series such as 2-8+32-128.... or 3+3/4+3/16+3/64.... or 128+64=32+16..... 41141a1d-b77f-30d5-9eb4-6d61f468b5c8 Thu, 23 May 2013 14:47:41 -0006 http://www.algebra.com/tutors/faq.mpl?key=751981&action=answer_question Click on the link to solve this problem: What is the equation of a parabola with a vertex at (0, 0) and a focus at (0, 6). 63ae5312-4c91-34df-a0c5-2072579a0cc6 Thu, 23 May 2013 14:46:25 -0006 http://www.algebra.com/tutors/faq.mpl?key=751980&action=answer_question Click on the link to solve this problem: 129a0816-c1f9-3b5d-8320-6c151090ed2a Thu, 23 May 2013 14:44:57 -0006 http://www.algebra.com/tutors/faq.mpl?key=751979&action=answer_question Click on the link to solve this problem: How much fencing is needed to enclose a circular tulip garden whose area is 16pi square meters b0aaf22d-e899-35e6-b264-cc62b8947d65 Thu, 23 May 2013 14:32:32 -0006 http://www.algebra.com/tutors/faq.mpl?key=751978&action=answer_question Click on the link to solve this problem: What is the value of x? Given angles are 24 degrees inside the triangle, and 122 degrees outside the triangle. 85aefc4f-0068-3f2c-a71f-70eda78fa95e Thu, 23 May 2013 14:15:14 -0006 http://www.algebra.com/tutors/faq.mpl?key=751977&action=answer_question Click on the link to solve this problem: Mark and Kenyon embarked on a 50-mile, two-man bicycle race. Being an avid cyclist, Mark gave Kenyon a one-hour head start. If Marks average speed was 20 mph slower than twice the average speed of Kenyon (whos one heck of a rock climber and surfer, but less of a cyclist) Who won the race? How far behind was the other person when the winner crossed the finish line? d7a3dc03-67a1-3b98-9fe6-11d89143b0ec Thu, 23 May 2013 14:08:58 -0006 http://www.algebra.com/tutors/faq.mpl?key=751975&action=answer_question Click on the link to solve this problem: in a sale there is 25% of all prices. A tv costs 93 in the sale. How much was it before the sale. please can you show me how to work this out 04743859-5d24-31f7-9e44-df2e4f7cc9bf Thu, 23 May 2013 13:47:54 -0006 http://www.algebra.com/tutors/faq.mpl?key=751974&action=answer_question Click on the link to solve this problem: Write the equation of a hyperbola with vertices at (-7, 0) and (7, 0) and co-vertices (0, -4) and (0, 4). 5106bc6f-55cf-3987-ad0f-2651728893bf Thu, 23 May 2013 13:45:33 -0006 http://www.algebra.com/tutors/faq.mpl?key=751972&action=answer_question Click on the link to solve this problem: Twice peter's age now is the same as three times his age two years ago. How old is peter now dfb48619-ac0e-3604-baea-d1b88bcfdfcb Thu, 23 May 2013 13:34:21 -0006 http://www.algebra.com/tutors/faq.mpl?key=751970&action=answer_question Click on the link to solve this problem: The sum of three numbers is 60 the second number is 2 more than the first the third number is 2 more than the second find the 3 numbers 3942a341-80c6-367d-ac1f-1099461aaca7 Thu, 23 May 2013 13:14:08 -0006 http://www.algebra.com/tutors/faq.mpl?key=751968&action=answer_question Click on the link to solve this problem: An artist wants to make alabaster pyramids using a block of alabaster with a volume of 576 cubic inches. She plans to make each pyramid with a square base area of 3 square inches and a height of 4 inches. At most, how many pyramids can the artist make from the block of alabaster? ec5aacaa-f225-373c-8621-f1c3eede6bd0 Thu, 23 May 2013 13:08:03 -0006 http://www.algebra.com/tutors/faq.mpl?key=751964&action=answer_question Click on the link to solve this problem: A tile is a square of side 30cm.How many such tiles would be required to cover the floor of a square room of side 6m 9b4472d3-ae66-341d-81ba-da04e7354a0e Thu, 23 May 2013 12:55:47 -0006 http://www.algebra.com/tutors/faq.mpl?key=751962&action=answer_question Click on the link to solve this problem: Most ATMs require that you enter a four-digit code, using the digits 0 to 9. How many 4-digit number codes can be formed a) without any restrictions? b) with all digits the same? c) with different digits? d) with alternate even and odd digits? e. with last two digits 0? f) with last two digits 0 or 1? g) with first digit 5? h) with first and last digits 5? i) with the middle two digits 0? j) 2 pairs of digits the same? k) 2 digits are the same and the other 2 digits are each different? efcd7dcf-59cc-30e6-b735-3a1bc55124d4 Thu, 23 May 2013 12:49:26 -0006 http://www.algebra.com/tutors/faq.mpl?key=751961&action=answer_question Click on the link to solve this problem: Show that each pair is a solution of the equation. Then graph the two pairs to determine another solution. Y=1/2X-1; (6, 2), (0-1) f709cb70-93dd-3b65-b071-072a76645188 Thu, 23 May 2013 12:49:06 -0006 http://www.algebra.com/tutors/faq.mpl?key=751960&action=answer_question Click on the link to solve this problem: Write an equation of the line that is parallel to the given line y - x +3 and the given point (5,0). 2950becd-9e68-3ea5-9998-bd52cf330424 Thu, 23 May 2013 12:44:44 -0006 http://www.algebra.com/tutors/faq.mpl?key=751958&action=answer_question Click on the link to solve this problem: It is 185 km from city A to city B . If a bus takes 2 hours to cover The first 85 km how long must it take to travel the final 100 km in order to average 50 kmph for the entire trip? b6657a2c-60bc-3285-95d6-7a181af5a2e9 Thu, 23 May 2013 12:38:44 -0006 http://www.algebra.com/tutors/faq.mpl?key=751957&action=answer_question Click on the link to solve this problem: ((1+sin (x))/cos (x))+(cos (x))/(1+sin (x))) 024f4fdf-1586-3297-bdd2-bbf5a4ae4fd8 Thu, 23 May 2013 12:22:17 -0006 http://www.algebra.com/tutors/faq.mpl?key=751955&action=answer_question Click on the link to solve this problem: Graph the system by hand. (Let t be the independent variable, and let p be the dependent variable.) p = 0.25t − 4 2t + 8p = −32 6cc787d6-c581-32fd-a2ea-a9bcb7d42bc8 Thu, 23 May 2013 12:09:12 -0006 http://www.algebra.com/tutors/faq.mpl?key=751953&action=answer_question Click on the link to solve this problem: R-3/5=8/R bbcb841d-3fe2-3e1f-8261-8823262ed46d Thu, 23 May 2013 11:57:51 -0006 http://www.algebra.com/tutors/faq.mpl?key=751952&action=answer_question Click on the link to solve this problem: solve the system of equations 2x+y=-1 and 3x+2y=0 by first writing the matrix equation AX=B finding the inverse A^-1 and then multiplying. That is, find X=1^1B 907e0cf5-aa21-38eb-803a-34f4169e6a13 Thu, 23 May 2013 11:55:40 -0006 http://www.algebra.com/tutors/faq.mpl?key=751951&action=answer_question Click on the link to solve this problem: So we have four sisters A, B, C, D. We know that the sum of all their ages is 96: A+B+C+D=96 We also know that they are have different ages, the problem states A>B>C>D. The difference between A and B is the same as the difference between B and C which at the same time is the difference between C and D: A-B=B-C=C-D And the last hint is this (this is what confused me): When B has the age that A has right now, then A would have three times the age that C has now. 0b95e2f3-0e8c-32e4-b66d-9208b4a92e99 Thu, 23 May 2013 11:51:29 -0006