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Earn +20 ptsQ: What does n mean in 105n?
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What is n if 7 over 9 is equal to 14 over 15 times n?
1.2PARTIAL SOLUTION:7/9 = 14/15n7(15n) = (14)(9)105n = 126n = 1.2
Find the mean of n natural numbers?
Mean = (sum of the n numbers)/n
How can you find the total of the n numbers in a distribution if you know their mean?
Mean = Total of the numbers / n So total of the numbers = n*mean
What is the rule for 1 3 6 10 15?
it adds one more each time. 1+2=3 3+3=6 6+4=10 10+5=15 the next one would be 15+6=21------------------------------------------------With U{n} = (7n⁵ - 105n⁴ + 595n³ - 1555n² + 1938n - 840)/40U{1, ..., 5} = {1, 3, 6, 10, 15}U{6} = 42However, I suspect the rule your teacher wants is that it is the triangular numbers given by U{n} = ½n(n + 1)
How do you find the mean of first n natural numbers?
The sum of the first n natural numbers is n*(n+1)/2 There are n numbers so their mean = (n+1)/2
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