http://www.algebra.com Newly Submitted Unsolved Problems en-us Copyright Algebra.Com 2009-11-21T12:47+00:00 webmaster@algebra.com webmaster@algebra.com brain food 1901-01-01T00:00+00:00 12 hourly http://www.algebra.com/tutors/faq.mpl?key=241317&action=answer_question Click on the link to solve this problem: Find the root of 8x^4-2x3+x^2-x+1=0 http://www.algebra.com/tutors/faq.mpl?key=241316&action=answer_question Click on the link to solve this problem: Suppose that the dimensions of a parallelogram are x yd and y yd. If they are both multiplied by 5 , what is the area of the resulting parallelogram with these new dimensions? http://www.algebra.com/tutors/faq.mpl?key=241315&action=answer_question Click on the link to solve this problem: The dimensions of a room are 21 feet by 6 feet. If carpet costs $16.25 per square yard, how much will it cost to carpet the room? http://www.algebra.com/tutors/faq.mpl?key=241314&action=answer_question Click on the link to solve this problem: If a rectangle and a trapezoid have equal areas, then they must have the same perimeters. A) True B) False http://www.algebra.com/tutors/faq.mpl?key=241313&action=answer_question Click on the link to solve this problem: A rectangular solid has each of its three dimensions doubled. How many times bigger is the surface area of the new solid? A) 2 B) 4 C) 8 D) 16 E) 32 from above how many times larger is the volume of the new solid? A) 2 B) 4 C) 6 D) 8 E) 10 http://www.algebra.com/tutors/faq.mpl?key=241312&action=answer_question Click on the link to solve this problem: A rectangular solid has each of its three dimensions doubled. How many times bigger is the surface area of the new solid? A) 2 B) 4 C) 8 D) 16 E) 32 http://www.algebra.com/tutors/faq.mpl?key=241309&action=answer_question Click on the link to solve this problem: The longest escalator in the world is located in Hong Kong, China. The escalator has a length of 745 ft and rises 377 ft vertical from start to finish. What is the horizontal distance from the bottom of the escalator to the top of the escalator? A) 368 B) 643 C) 412896 D) 377 E) 600 http://www.algebra.com/tutors/faq.mpl?key=241308&action=answer_question Click on the link to solve this problem: If the waffle cone supporting the spherical pint of ice cream is 4 inches tall and has a radius of 2 inches, what will be the volume in inches cubed of the waffle cone? A) 50.2 B) 16.8 C) 5.3 D) 25.1 E) 18.8 http://www.algebra.com/tutors/faq.mpl?key=241306&action=answer_question Click on the link to solve this problem: the points (3, a^2 -7a +10) and (3a + 1 , a + 2 ) lie on the graph of an inverse variation equation . find the coordinates of the points http://www.algebra.com/tutors/faq.mpl?key=241305&action=answer_question Click on the link to solve this problem: a fulcrum is placed under the center of a board. in order for two objects to balance on the board, the distance (in feet ) of each object from the center of the board must vary inversely with its weight (in pounds) . what is the distance of each object from the center of the board ? (7.5 lb)a___________5ft_______________b (12.5 lb) the distance between two objects is 5ft http://www.algebra.com/tutors/faq.mpl?key=241304&action=answer_question Click on the link to solve this problem: Show the steps of converting {{{2x^3-30x^2+162x-350=0}}} to {{{y^3+6y-20=0}}} using x=y+5 as a subsitute. http://www.algebra.com/tutors/faq.mpl?key=241303&action=answer_question Click on the link to solve this problem: 1.Draw a Venn diagram to represent i) A(BC) and ii) A(BC) . 2.A computer company wants to hire 25 programmers to handle systems programming and 40 programmers for applications programming. Of those hired, ten will be expected to perform jobs of both types. How many programmers must be hired? http://www.algebra.com/tutors/faq.mpl?key=241301&action=answer_question Click on the link to solve this problem: If A = {1,2,3,4}, B = {2,3,4,5,6,7}and the rule f assigned to each member in A is f(x) = x + 1, then find the domain and range of f. http://www.algebra.com/tutors/faq.mpl?key=241300&action=answer_question Click on the link to solve this problem: a pipe is 7/4cm thick and has an inner radius of 8cm find the vilume of the pipe which is 0.04cm long http://www.algebra.com/tutors/faq.mpl?key=241299&action=answer_question Click on the link to solve this problem: Can someone show me how to complete this problem..I have tried to look it up but can not figure it out. Add (2s^4-3s^3+4s^2+14s-9)+(s^5+9s^3+5s^2-4s+5)+(-5a^4+s^2-6s-7) http://www.algebra.com/tutors/faq.mpl?key=241298&action=answer_question Click on the link to solve this problem: I am completely lost and would like the step by step play so I can understand what to do. Subtract the polynomials (-5v^2+6v+3)-(8v^2+3)= http://www.algebra.com/tutors/faq.mpl?key=241296&action=answer_question Click on the link to solve this problem: 1)A sales promoter offers a special price for a scanner with a printer. The probabilities that each functions satisfactorily over three years are 0.68 and 0.72 respectively. What is the probability that at the end of the three years: i) Both scanner and printer will function satisfactorily? ii) Only the printer will be functioning? iii) At least one of the two machines will be functioning? State any assumptions made. ------------------------------------------------------------------------- 2)240 students were asked to taste three types of cola in a random order and were not told their identity. The contingency table below shows the counts of preferred colas classified by the subject specialism of students. Cola A Cola B Cola C Mathematics 13 23 44 Economics 36 24 10 Statistics 24 8 8 Management 11 28 11 Use These data to investigate the association, if any, between a student's subject specialism and preferred cola-type. Interpret any association which exists, testing at more than one significance level. -------------------------------------------------------------------------------- 3)The times required by three workers to perform an assembly-line task were recorded on five randomly selected occasions. Here are the times, to the nearest minute. Hank Joseph Susan 8 8 10 10 9 9 9 9 10 11 8 11 10 10 9 Assuming the normality of populations under consideration, at the 5% significance level, do the data provide sufficient evidence to conclude that a difference exists between the times required by three workers to perform an assembly-line task? Your kind assistance is highly appreciated Bahman Mennati http://www.algebra.com/tutors/faq.mpl?key=241295&action=answer_question Click on the link to solve this problem: The equation y=-1777x+27,153 can be used to predict the number y of gun deaths in the US x years after 2000, that is, x=0 corresponds to 2000, x=3, x=4 corresponds to 2004, and so on. Predict the number of gun deaths in 2004 and 2007. In what year will the number gun deaths be 12,937? http://www.algebra.com/tutors/faq.mpl?key=241294&action=answer_question Click on the link to solve this problem: In 1991, the life expectancy of males in a certain country was 66.9 years. In 1998, it was 70.2 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991. E(t)=__t + __ (Round to the nearest tenth) Use the function to predict the life expectance of males in 2007. E(16)= __ (Round to the nearest tenth) http://www.algebra.com/tutors/faq.mpl?key=241293&action=answer_question Click on the link to solve this problem: what is Trains A and B are traveling in the same direction on parallel tracks. train a is traveling at 100 miles per hour and train b is traveling at 125 miles per hour. Train A passes a station at 2:10 A.M If train B passes the same station at 2:22 am, at what time will train b catch up to train A? When will train B catch up with train A? http://www.algebra.com/tutors/faq.mpl?key=241292&action=answer_question Click on the link to solve this problem: 1.a guard of 12 police men is formed from a group of n police men present in the police line in all possible ways.how many times two particular police men are together? 2.describe the origin of pigeon hole principle and give several application to every day life? 3.give a number of application of the floor and ceiling to every day life? http://www.algebra.com/tutors/faq.mpl?key=241291&action=answer_question Click on the link to solve this problem: Find 3 consecutive integers such that the sum of the first and second is equal to three times the third integer. http://www.algebra.com/tutors/faq.mpl?key=241290&action=answer_question Click on the link to solve this problem: curt(3)sqrt(40x^7) = curt(3)sqrt(40) * curt(3)sqrt(x^7) = (I reduced the 40 to 5 because it is 5 *8 = 40) = 5curt(3)sqrt(x^7) Is this correct the way I am not only writing it out but solving it correctly? Thanks. http://www.algebra.com/tutors/faq.mpl?key=241288&action=answer_question Click on the link to solve this problem: sqrt(4 - x) = (4 - x) = (4 + x) answer Is this correct? Thanks http://www.algebra.com/tutors/faq.mpl?key=241286&action=answer_question Click on the link to solve this problem: Ryan scored 16, 22 and 24 points in three basketball games. What is the least number of points he must score in the next game to average at least 20 points per game for the four games?