http://www.algebra.com New Solutions by tutors en-us Copyright Algebra.Com Fri, 24 May 2013 20:13:00 -0000 Fri, 24 May 2013 20:13:00 -0000 webmaster@algebra.com webmaster@algebra.com http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752288 This problem was solved by unlockmath: I am having trouble figuring out how to get my complete answer to this equation 4/3x-4/-3=8 I was able to figure out the first part but am having trouble with the second part. 6d76639c-fea1-3f33-b3d1-fb406292a196 Fri, 24 May 2013 14:04:52 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=751629 This problem was solved by malglu: A pilot can fly a plane at 100 mph in calm air. A recent trip of 300 mi flying with the wind and 300 mi returning against the wind took 8 h. Find the rate of the wind. c0a1754b-1c34-36d5-9ae8-f9fe1cf31278 Fri, 24 May 2013 13:25:02 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752274 This problem was solved by josmiceli: 2 and a half hours plus three and three-quarter hours plus two thirds of an hour at $45 an hour, what Is the total amount earned? bfe4a4be-582a-3a15-8f82-9dafb15e4204 Fri, 24 May 2013 13:19:32 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752246 This problem was solved by josmiceli: In 1994, the moose population in a park was measured to be 3550. By 1998, the population was measured again to be 3270. If the population continues to change linearly: Find a formula for the moose population, P, in terms of t, the years since 1990.What does your model predict the moose population to be in 2007? Having trouble solving this problem. ea88731b-f834-340c-9a29-fa7da11874e8 Fri, 24 May 2013 13:08:55 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752203 This problem was solved by malglu: when 8 is added to the number that is produced by doubling the number x the result is equal to 8 times the number that is 5 less than the number of x. what is the value of x? e917fb8e-b31b-36bf-8de5-01c0a7810b71 Fri, 24 May 2013 13:07:04 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752258 This problem was solved by malglu: when a wheel of radius 50cm makes 2 revolution the linear distance travelled by it is? 4317899a-c679-34eb-9f96-f5e63583c73a Fri, 24 May 2013 13:04:37 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752253 This problem was solved by josmiceli: Good Morning, I have a mark-up problem that is haunting me. Could you please show me how to set it up correctly? I can't seem to figure it out. Here it is: A pair of shoes costs the retailer $85 per pair. At what price should the retailer mark them so he can sell them at a 15% disoount off the selling price and still make a 20% profit on his cost? My brain is frozen on this. Thank you in advance for your help. Kindest regards, Michelle Dean 823db78e-c0ad-3199-88de-b15da75ae969 Fri, 24 May 2013 12:50:23 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752253 This problem was solved by KMST: Good Morning, I have a mark-up problem that is haunting me. Could you please show me how to set it up correctly? I can't seem to figure it out. Here it is: A pair of shoes costs the retailer $85 per pair. At what price should the retailer mark them so he can sell them at a 15% disoount off the selling price and still make a 20% profit on his cost? My brain is frozen on this. Thank you in advance for your help. Kindest regards, Michelle Dean ab20595b-dfbc-35f7-9c7e-dc18ce7a7016 Fri, 24 May 2013 12:43:02 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752248 This problem was solved by josmiceli: How many gallons of a 3.6% salt solution must be mixed with a 7% salt solution to obtain 25 gallons of a 4.5% salt solution 5e7bd54e-2c00-3b2e-8b12-f1945c3d5a54 Fri, 24 May 2013 12:38:41 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752249 This problem was solved by josmiceli: a hiker walks with a average speed of 1.2 m/s. what in kilometers does the hiker travel in a time of 80 mintues 4ace3f42-0662-34fb-b04e-18905f5be47d Fri, 24 May 2013 11:42:11 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752164 This problem was solved by rothauserc: HELLO, please Find the area of a triangle with sides 6.4 km, and 8.9 km and included angle 63 ? b1b08d83-e750-3251-ba80-d034ab89841a Fri, 24 May 2013 10:34:55 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752192 This problem was solved by ankor@dixie-net.com: If 6 men can do a work in 20 days and one man can do t he work f two boys then in how many days can 10 men and 5boys do the same work d571b113-8c9c-36b6-8fd6-3ac97f95b90d Fri, 24 May 2013 10:29:32 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752172 This problem was solved by rothauserc: maria paid $1320 tax in 1999. She paid 10% less tax in 2000. calculate the tax maria paid in 2000. Please answer this as fast as possible! ef28ea32-1e47-3741-bfca-43456a07edbb Fri, 24 May 2013 10:21:47 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752221 This problem was solved by stanbon: find rational numbers between 4/9 and 8/11 d18dd5c9-b2e8-305c-a076-d1d8858cf5bc Fri, 24 May 2013 10:21:02 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752224 This problem was solved by stanbon: . A line k passes through the points (4, 2) and (-4, 4). A second line h passes through the points (-8, 1) and (8, -3). Is line k parallel to line h? Why or why not? 304a7030-37c4-3d49-be2f-8ae8831e6926 Fri, 24 May 2013 10:16:25 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752231 This problem was solved by stanbon: If -2 + i is a zero of a polynomial equation, what is the other zero of the polynomial equation? 31cc584e-527b-3ae2-a538-2302ac3bd5b6 Fri, 24 May 2013 10:12:03 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752228 This problem was solved by stanbon: When graphing y<-6, should the region below the line y=-6 be shaded or should the region above the line y=-6 be shaded? 169460e2-cb19-330f-8f69-e854e5b51506 Fri, 24 May 2013 10:10:10 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752230 This problem was solved by stanbon: Given the first term, a1, the common difference, d , and the arithmetic sequence a1 = 6, d = 8, the 20 th term would be? feb4b2c0-17a3-3dd6-9e7b-addd6accdb4a Fri, 24 May 2013 10:08:11 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752186 This problem was solved by stanbon: Which of the following statements is true? Tick as many as apply. Answer a The required sample size of a study increases as the size of the true effect increases b The required sample size of a study increases as the required power of the study increases c The required sample size of a study decreases as the level of significance (alpha) increases d The required sample size of a study is greater for a one-sided test, compared to a two-sided test, for the same alpha level 468e1f91-37da-3b7f-a51c-96e80d076fe3 Fri, 24 May 2013 10:06:14 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752211 This problem was solved by stanbon: Last month, a random sample of adult american females was taken and 570 out of 1000 adult american women polled approved. Create a 95% confidence interval for this data. 279a4ef4-9cf5-3d5c-896f-c19e221aa7b0 Fri, 24 May 2013 10:03:25 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752227 This problem was solved by stanbon: find the probability of selecting two consecutive threes when two cards are drawn with replacement from a standard deck of 52 playing cards d4f1263c-bd90-3bc5-91ee-1b1715ab73a1 Fri, 24 May 2013 10:00:30 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752210 This problem was solved by stanbon: Last month a random sample of adult American females was taken and 750 of the 1200 women polled said that they approved of the way the president was handling domestic issues. Create a 95% confidence interval for this data. 7380729c-bec8-3b37-93b5-2bcc2559cd76 Fri, 24 May 2013 09:57:40 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752226 This problem was solved by stanbon: In a class of 15 students, each student has a different test score. The median test score is 79. How many students scored higher than 79? 2f4fff45-591d-3153-8ccd-288d2a512539 Fri, 24 May 2013 09:52:51 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752225 This problem was solved by stanbon: A solution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing 9% alcohol. How much of each solution should be used? bffe65c6-28dd-3fdd-9729-6fd1c993dc4e Fri, 24 May 2013 09:50:49 -0006 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=752213 This problem was solved by stanbon: write the function whose graph is the graph of y=x^2 but horizontally strectched by a factor of 8. y=____ aa311675-8a1b-3435-8db5-5d000b472b3d Fri, 24 May 2013 09:41:30 -0006