http://www.algebra.com Newly Submitted Unsolved Problems en-us Copyright Algebra.Com Sun, 12 Feb 2012 16:48:00 -0000 Sun, 12 Feb 2012 16:48:00 -0000 webmaster@algebra.com webmaster@algebra.com http://www.algebra.com/tutors/faq.mpl?key=571582&action=answer_question Click on the link to solve this problem: is (1,-2) is solution of 2x-y=3 0835ce8b-97ae-34b8-bca6-1337cd14d46c Sun, 12 Feb 2012 10:44:42 -0006 http://www.algebra.com/tutors/faq.mpl?key=571581&action=answer_question Click on the link to solve this problem: A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 30 said they drove alone. 31 rode in a carpool. 28 rode public transportation. 6 used both carpools and public transportation. 8 used both a carpool and sometimes their own cars. 6 used buses as well as their own cars. 4 used all three methods. 8d6b6aeb-54bb-3beb-aebf-dd8e3a0e44c3 Sun, 12 Feb 2012 10:41:25 -0006 http://www.algebra.com/tutors/faq.mpl?key=571580&action=answer_question Click on the link to solve this problem: The Fahrenheit temperature, "F," and Celsius temperature, "C" of an object are related by a linear function. Water boils at 100 degrees C, or 212 degrees F, and freezes at 0 degrees C, or 32 degrees F. a.) Let the Celsius temperature, C, be the independent variable and the Fahrenheit temperature, F, be the dependent variable. Determine the slope and interpret its meaning in context of the problem. b.) Determine the linear function that gives F as a function of C. c.) Lead boils at a temperature of 1620 degrees C. What is Fahrenheit temperature is this? d.) Determine the Fahrenheit intercept and interpret the meaning in context of the problem? e.) If you had a fever thermometer calibrated in Celsius degrees, what would "normal"(98.6 degrees F) be on it? f.) If the weather forecaster says it will be 40 degrees C today, is this hot, cold, or medium? g.) Determine the Celsius intercept and interpret its meaning in context of the problem? h.) Sketch a graph using a reasonable domain and range? Thank you for your time. I really appreciate it! 3edb5981-2185-3ab3-9410-4bf863301d7e Sun, 12 Feb 2012 10:38:57 -0006 http://www.algebra.com/tutors/faq.mpl?key=571579&action=answer_question Click on the link to solve this problem: Rectangle ABCD is similar to rectangle HIJK. What is the length of IK if BD = 9 centimeters, AB = 12 centimeters, and HI = 8 centimeters? 78ca9409-6cb4-3691-9166-56f99036e9f3 Sun, 12 Feb 2012 10:34:13 -0006 http://www.algebra.com/tutors/faq.mpl?key=571578&action=answer_question Click on the link to solve this problem: On a map of Terrance's hometown, the distance from the stadium to a park is 3.5 inches. If the actual distance is 7 miles, what is the scale of the map? 44840138-3143-357e-b75b-7df8f9968e1f Sun, 12 Feb 2012 10:31:47 -0006 http://www.algebra.com/tutors/faq.mpl?key=571577&action=answer_question Click on the link to solve this problem: Ski cross is a new event at the 2010 Olympics, and it is a type of freestyle downhill race. The ski cross course has a length of 1135 meters and a vertical change of 208 meters. a.) Assuming the ski cross course is a straight line what is the horizontal change of the ski cross course? b.) What is the slop of the ski cross course? c.) The alpine skiing course has an angle of elevation of 15.64 degrees. Calculate the slope of the alpine skiing course and compare it to the slope of the ski cross course. Is the alpine skiing course steeper than the ski cross course? First time using this website! Thank you! 7c0b2afd-5aca-35a4-aebb-57910dcacf77 Sun, 12 Feb 2012 10:27:11 -0006 http://www.algebra.com/tutors/faq.mpl?key=571576&action=answer_question Click on the link to solve this problem: how can you understand math , other than the way your teacher teaches it????/ dfbbe3a1-2dc9-38b6-bc11-4fdb3cf0ce35 Sun, 12 Feb 2012 10:25:33 -0006 http://www.algebra.com/tutors/faq.mpl?key=571575&action=answer_question Click on the link to solve this problem: (log[4](x))^2 = 5(log[4](x-4)) Solve for x d2eafcab-3c66-3eab-8e47-579014ffd354 Sun, 12 Feb 2012 10:12:07 -0006 http://www.algebra.com/tutors/faq.mpl?key=571574&action=answer_question Click on the link to solve this problem: To find the distance across a protected cove at a lake, a surveyor makes the measurements shown in the figure. Use these measurements to find the distance from A to B to the nearest yard. A to C = 65 Yards C to B =105 Yards Angle of C= 80 Degrees 7d2409b8-068c-3c11-b4f0-d3b59770a78b Sun, 12 Feb 2012 10:10:46 -0006 http://www.algebra.com/tutors/faq.mpl?key=571573&action=answer_question Click on the link to solve this problem: Earl's mother is 7 times as old as Earl. 10 years from now, Earl will be 1/3 as old as his mother. How old is Earl's mother? d8b84357-98c0-3d58-9df5-1cfa1d17c2c6 Sun, 12 Feb 2012 09:56:58 -0006 http://www.algebra.com/tutors/faq.mpl?key=571572&action=answer_question Click on the link to solve this problem: A password consist of four letters of the alphabet followed by three digits chosen from 1 to 9. Repeats are allowed. How many different possible passwords are there? fda84e08-1be0-34ab-9fd9-74fd683ff8b6 Sun, 12 Feb 2012 09:44:57 -0006 http://www.algebra.com/tutors/faq.mpl?key=571571&action=answer_question Click on the link to solve this problem: i need to write an equation for the width of a certain rectangle is 1/4 its lengh cd8d670a-40ff-348c-a7ce-02cdd424bbf1 Sun, 12 Feb 2012 09:41:47 -0006 http://www.algebra.com/tutors/faq.mpl?key=571570&action=answer_question Click on the link to solve this problem: A rectangular block of dimension 15,25,10 is cut into an exact number of equal cubes. Find the least possible number of cubes e7191435-8b04-3ff9-b93c-a4d1a62d5103 Sun, 12 Feb 2012 09:40:26 -0006 http://www.algebra.com/tutors/faq.mpl?key=571569&action=answer_question Click on the link to solve this problem: In 2000, the population of the Palestinians in the West Bank, Gaza strip, and East Jerusalem was approximately 3.2 million and by 2050 it is projected to grow to 12 million. Use the exponential growth model A=A(subscript, 0)e^kt, in which t is the number of years after 2000 to find an exponential growth function that models the data. In which year will the Palestinian population be 9 million? 955646b1-c686-3fa7-81bd-fab8d4cba704 Sun, 12 Feb 2012 09:39:08 -0006 http://www.algebra.com/tutors/faq.mpl?key=571568&action=answer_question Click on the link to solve this problem: How to make 20 by four four 8691c7c8-a489-3715-b88d-2b99bc995f95 Sun, 12 Feb 2012 09:30:56 -0006 http://www.algebra.com/tutors/faq.mpl?key=571567&action=answer_question Click on the link to solve this problem: 4.8m-50+2.2m = 1.5m=5 0245b5a8-2187-3417-bbf8-e6cd10b81d7b Sun, 12 Feb 2012 09:29:21 -0006 http://www.algebra.com/tutors/faq.mpl?key=571566&action=answer_question Click on the link to solve this problem: Complete the table for a savings account subject to n compounding yearly [A=P(1+r/n)^nt]. Round the answer to one decimal point. Amount invested: $7250 Number Of Compounding Periods: 12 Annual Interest Rate: 6.5 % Accumulated Amount: $15,000 Time t in years: blank 39877c60-f007-33dc-9896-089824b89f0a Sun, 12 Feb 2012 09:22:40 -0006 http://www.algebra.com/tutors/faq.mpl?key=571565&action=answer_question Click on the link to solve this problem: Five-eighths of the students at Salem State College live in dormitories. if 6000 students at the college live in dormitories, how many students are there in the college? 07516fd4-2c44-33bd-8862-3ccc2a67a72b Sun, 12 Feb 2012 09:21:33 -0006 http://www.algebra.com/tutors/faq.mpl?key=571564&action=answer_question Click on the link to solve this problem: Martine bought 8 3/4 yd of fabric. She wants to make a skirt using 1 7/8 yd, pants using 2 3/8 yd and a vest using 1 2/3 yd. How many students are there in the college? ab0b5b6c-b0a3-39af-b2a3-31616cf82f83 Sun, 12 Feb 2012 09:19:45 -0006 http://www.algebra.com/tutors/faq.mpl?key=571563&action=answer_question Click on the link to solve this problem: the problems are, 16x^4 ------ write in simplest form whithout using - or 0 exponents 24x m^3 m^4 ---- x ----- 2n n^3 2r^3 (-t)^2 ---- x ---- t^3 (2r^2)^2 i dont know how to do them, so if you could show me, that would be great. 02f19bdd-947a-3b29-9b82-c0be5de2e4be Sun, 12 Feb 2012 09:08:33 -0006 http://www.algebra.com/tutors/faq.mpl?key=571562&action=answer_question Click on the link to solve this problem: i am trying to solve an equation, y=ax^-b the points that i am given are when y= 0.01 x=35 & y=0.03 x=28 can you please help me to find a and -b? thanks fbd6629b-cddb-350b-a470-b68a15191227 Sun, 12 Feb 2012 08:46:35 -0006 http://www.algebra.com/tutors/faq.mpl?key=571561&action=answer_question Click on the link to solve this problem: A POOL IS 25 meter long 10 meter wide and3 meter deep. what will be the cost of cementing its walls and floor at the of RS 1250 per 100 meter square 2a39d51a-3186-3175-94fb-4c6e0860f48e Sun, 12 Feb 2012 08:43:21 -0006 http://www.algebra.com/tutors/faq.mpl?key=571559&action=answer_question Click on the link to solve this problem: The grade of a highway up a hill is 20%. How much change in a horizontal distance is there if the vertical height of the hill is 80 feet? 197bd323-98bc-323b-b67b-4ad5b5689667 Sun, 12 Feb 2012 08:32:26 -0006 http://www.algebra.com/tutors/faq.mpl?key=571558&action=answer_question Click on the link to solve this problem: A staircase has a ratio of rise to run to be 8/9 and the rise of each step to be 30 centimeters. Find the measure of the run to the nearest centimeter. b18dbeed-001b-3738-bcb3-03921cf5e9f4 Sun, 12 Feb 2012 08:28:58 -0006 http://www.algebra.com/tutors/faq.mpl?key=571556&action=answer_question Click on the link to solve this problem: Susan is six years older than Ana. she is twice as old as Ana. how old is each now? e98f7a08-695c-3715-9391-407486be054d Sun, 12 Feb 2012 08:19:41 -0006