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The latest questions and answers, from members following Math at eNotes.Thu, 27 Nov 2014 07:38:44 PSTen-usPrimary and secondary data fall within the scope of statistics and can...
http://www.enotes.com/homework-help/what-primary-data-secondary-data-472774
Primary and secondary data fall within the scope of statistics and can be used as part of a research method. The collected data may assist a company in measuring, assessing and discussing the results of data collection for whatever purposes the information is required. This is where the differences between the two become relevant as some companies need a direct approach and therefore use primary data sources whereas others need previously...http://www.enotes.com/homework-help/what-primary-data-secondary-data-472774Thu, 27 Nov 2014 07:38:44 PSTWhat is primary data and secondary data in Statistics and research methods?
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What is primary data and secondary data in Statistics and research methods?http://www.enotes.com/homework-help/what-primary-data-secondary-data-472774#1November 27, 2014, 2:38 am PSTIf I understand the game correctly, there are additional rules. At each...
http://www.enotes.com/homework-help/2-3-4-coin-game-where-coins-arranged-with-2-coins-472747
If I understand the game correctly, there are additional rules. At each turn, a player must choose at least one coin. Also, a player can only take coins from 1 row at a turn. Let the coins be: AABBBCCCC The first player can always win. The first move is to take three C's. (2a) Player 2 takes 1 A. Then player 1 takes 3 Bs leaving an A and C so player 1 wins (2b) Player 2 takes 2 As. Then player B takes 2 Bs leaving a B and a C. PLayer 1 wins....http://www.enotes.com/homework-help/2-3-4-coin-game-where-coins-arranged-with-2-coins-472747Wed, 26 Nov 2014 04:18:56 PSTIn a 2-3-4 coin game where coins are arranged with 2 coins in the first...
http://www.enotes.com/homework-help/2-3-4-coin-game-where-coins-arranged-with-2-coins-472747
In a 2-3-4 coin game where coins are arranged with 2 coins in the first row, 3 in the second row and 4 in the last row, 2 players are allowed to pick as many coins as they want at each turn and who ever gets the last coin wins. Determine whether the player that goes first can always win. If that is the case, describe the winning strategy and give convincing argument that this strategy always work despite what the opponent does. If there is no...http://www.enotes.com/homework-help/2-3-4-coin-game-where-coins-arranged-with-2-coins-472747#2November 25, 2014, 12:54 am PSTThe accompanying figure that should have been in my original response.
http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472715
The accompanying figure that should have been in my original response.http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472715Mon, 24 Nov 2014 22:42:31 PSTSee reply to replicated post of this question.
http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472699
See reply to replicated post of this question.http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472699Mon, 24 Nov 2014 19:52:31 PSTF is an object which is a one-dimensional regular hexagon with an...
http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472715
F is an object which is a one-dimensional regular hexagon with an equilateral triangle inscribed, where the triangle and hexagon cannot move independently. The isometries of F (making up the symmetry group of F, S(F) ) are as follows - 6 rotational positions of the object, and 2 sides from which to view the object (back or front), making 12 isometries altogether. This is the same as the symmetric group of the hexagon S(Hexagon) assuming that...http://www.enotes.com/homework-help/figure-f-regular-hexagon-with-an-equilateral-472715#3Mon, 24 Nov 2014 19:45:20 PSTThe two line symbols meant to be right under each other in brackets, but...
http://www.enotes.com/homework-help/two-line-symbols-permutations-p-q-s5-p-1-2-3-4-5-472716
The two line symbols meant to be right under each other in brackets, but I could not type it up like that, so like p in cycle form would be p= (153)(24) There for p^-1 would be (135)(24) Am I wrong ??? Would you please have a look at this . Many thanks !!http://www.enotes.com/homework-help/two-line-symbols-permutations-p-q-s5-p-1-2-3-4-5-472716Mon, 24 Nov 2014 10:03:00 PSTThe numbers N and M have to be determined such that the sum of M and N...
http://www.enotes.com/homework-help/sum-2-numbers-6-difference-2-what-numbers-455567
The numbers N and M have to be determined such that the sum of M and N is 6 and the difference of M and N is 2. As the sum is 6, M + N = 6 The difference being 2 gives M - N = 2 and N - M = 2 Now M - N = 2 gives M = N + 2 and N - M = 2 gives N = M + 2 Substituting M = N + 2 in the equation M + N = 6 gives N + 2 + N = 6 or N = 2 The value of M is N + 2 = 4 Even if we were to take M = N + 2 the same two numbers would be obtained. This problem...http://www.enotes.com/homework-help/sum-2-numbers-6-difference-2-what-numbers-455567Mon, 24 Nov 2014 07:26:32 PSTThe curve y=x^2+2x-7 intercepts the line 2x-y-3=0 if the solution of the...
http://www.enotes.com/homework-help/how-would-know-curve-y-x-2-2x-7-intercept-line-2x-455626
The curve y=x^2+2x-7 intercepts the line 2x-y-3=0 if the solution of the two equations is a real number. 2x - y - 3 = 0 gives y = 2x - 3 If y = 2x - 3 is substituted in y=x^2+2x-7 the quadratic equation obtained is: 2x - 3 = x^2 + 2x - 7 x^2 - 4 = 0 x^2 = 4 x = +- 2 The roots of the equation are real. As this is the case, the curve y=x^2+2x-7 intersects the line 2x-y-3=0.http://www.enotes.com/homework-help/how-would-know-curve-y-x-2-2x-7-intercept-line-2x-455626Mon, 24 Nov 2014 07:04:54 PSTAnother way to look at this is to use the formula for the area of a...
http://www.enotes.com/homework-help/diagonal-square-sqrt-84-what-area-square-455629
Another way to look at this is to use the formula for the area of a rhombus. A rhombus is a quadrilateral with 4 equal sides. If the length of the diagonals is D1 and D2, the area of the rhombus is `(D1*D2)/2` . A square is a rhombus and as the adjacent sides are perpendicular to each other, the diagonals are equal in length. The area of a square with diagonal `sqrt 84` is : `(sqrt 84*sqrt 84)/2 = 84/2 = 41` The area of the square is 41.http://www.enotes.com/homework-help/diagonal-square-sqrt-84-what-area-square-455629Mon, 24 Nov 2014 02:59:35 PSTWhen a polynomial P(x) is divided by a factor (x - a), the remainder...
http://www.enotes.com/homework-help/polynomial-ax-3-3x-2-11x-b-where-b-constants-455648
When a polynomial P(x) is divided by a factor (x - a), the remainder theorem gives the remainder as P(a). It is given that P(x) = ax^3-3x^2-11x + b is divisible by x+2 As a result P(-2) = 0 a*(-2)^3 - 3*(-2)^2 - 11*(-2) + b = 0 -8a - 12 + 22 + b = 0 -8a + b + 10 = 0 Also, when P(x) is divided by x+1 the remainder is 12. P(-1) = 12 = a*(-1)^3 - 3*(-1)^2 - 11*(-1) + b = 12 = -a - 3 + 11 + b = 12 = -a + 8 + b = 12 = -a + b = 4 From -8a + b + 10 =...http://www.enotes.com/homework-help/polynomial-ax-3-3x-2-11x-b-where-b-constants-455648Mon, 24 Nov 2014 02:42:01 PSTThe system of equations 3x+4y=-3 and x+2y=-5 has to be solved. From the...
http://www.enotes.com/homework-help/3x-4y-3-x-2y-5-455716
The system of equations 3x+4y=-3 and x+2y=-5 has to be solved. From the equation x+2y=-5, express x in terms of y. x+2y=-5 x = -5 - 2y Now substitute this for x in 3x+4y=-3 3*(-5 - 2y) + 4y = -3 -15 - 6y + 4y = -3 -2y = 12 y = -6 x = -5 - 2y = -5 - (-6*2) = -5 + 12 = 7 The solution of the given system of equations is x = 7 and y = -6http://www.enotes.com/homework-help/3x-4y-3-x-2y-5-455716Mon, 24 Nov 2014 02:30:05 PSTThe domain of a function y = f(x) is the set of values that x can take...
http://www.enotes.com/homework-help/find-doamin-given-function-write-your-answers-both-455750
The domain of a function y = f(x) is the set of values that x can take on for which the value of y is real and defined. Now f(x) = `sqrt(x^2 + 12x + 36)` The expansion of (a+b)^2 is a^2 + b^2 + 2*a*b x^2 + 12x + 36 = x^2 + 2*x*6 + 6^2 = (x + 6)^2 The function f(x) = `sqrt((x+6)^2)` Now for all real values of x, the value of (x+6)^2 is positive. As a result, the domain of the given function is the set of real numbers. The domain is `(-oo,oo)`http://www.enotes.com/homework-help/find-doamin-given-function-write-your-answers-both-455750Mon, 24 Nov 2014 02:25:31 PSTThe permutation p maps (12345) to (54123), from the two-line notation...
http://www.enotes.com/homework-help/two-line-symbols-permutations-p-q-s5-p-1-2-3-4-5-472716
The permutation p maps (12345) to (54123), from the two-line notation given. In cycle notation, p can be written as a product of disjoint cycles as (135)(24) (NB, start with any element and see where it maps to iteratively until you get back to the starting place - eg here, 1 is mapped to position 3 which is then mapped to position 5 which is then mapped back to position 1; 2 is mapped to position 4 which is then mapped back to position 2....http://www.enotes.com/homework-help/two-line-symbols-permutations-p-q-s5-p-1-2-3-4-5-472716#4Mon, 24 Nov 2014 00:13:11 PST