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Reply to grant about a regression problem
This is a reply to the question posted here http://www.jiskha.com/display.cgi?id=1178989522 As I explained there, you can find the parameters by defining: x1 = Sin(0.49 t) x2 = Cos(0.49 t) and treat this as an ordinary linear
asked by Count Iblis on May 13, 2007 
probability
two fair sixsided dice are rolled and the sum of the dots on the top faces is recorded. a) complete the table, showing the number of ways each sum can occur sum: 1 2 3 4 5 6 7 8 9 10 11 12 ways:1 2 3 b)use the table to find the
asked by mary on November 27, 2012 
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I have a few problems I need some help with. The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the bottom n=1 and to the right (72n) 2. The next question is find a10 for an arithmetic sequence with
asked by Jess on April 3, 2013 
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Find the sum of the first 50 terms of the sequence 2,4,6,8........ That is twice the sum of 1+2+3+...+50 For 1+2+...+N, the sum is N(N+1)/2 The sum is therefore 2*[50*51)/2) = 2550
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find the sum of the series: 1. the sum from n=1 to infinity of ((1)^n*(.2)^n)/n I simplified this to: (.2)^n/n I know this is alternating, but how do I know what the sum is? 2. the sum from n=0 to infinity of 1/2^n Is this
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Find the two numbers that multiply to the product number and add to the sum number of the following: a)Product 563033256; Sum 51895 b)Product 43481220; Sum 28429 c)Product 2545124358; Sum 105619 I tried xy = product and x+y =
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A pair of dice is rolled. Find the probability of rolling a) a sum not more than 1010, b) a sum not less than 77, c) a sum between 33 and 77 (exclusive).
asked by Anonymous on February 28, 2017 
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Minimizing Sum: Find two positive numbers whose sum is 100 and the sum of whose squares is a minimum.
asked by David on October 9, 2009 
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The problem I have is a summation from 1 to infinity for (1)^n/n. I have to find a partial sum that is in 0.001 of the infinite sum, my teacher says the fourth partial sum approximates the infinite sum, which is 7/12. I think to
asked by Sophie on May 5, 2009 
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The sum of the first and fourth terms of an arithimetic sequences is 2 and the sum of their squares is 20 1. Find the common difference 2.find the sum of the first eight terms of the squence
asked by Ishimwe on March 12, 2016 
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Find the sum of all 3digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of N+3. Details and assumptions The digit sum of a number is the sum of all its digits. For example, 1123
asked by rohit on March 21, 2013