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-4.
One possible rule is
Un = (n4 - 26n3 + 155n2 - 238n + 120)/12 for n = 1, 2, 3, ...
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Earn +20 ptsQ: What follows after 1 6 15 20 15?
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What follows next after 1- 3- 6 -10- 15?
21 15+6
What is 15 plus 6 minus 1?
15 + 6 - 1 = 20
Pascal's triangle what numbers are in 7th row?
1 6 15 20 15 6 1
36 minus 15 and five-sixths?
36 - 15 5/6= 35 6/6 - 15 5/6= 20 1/6
What fraction of 2 minutes is 6 seconds?
fraction = 6 seconds/120 seconds or 1/20
What does three fourth plus three tenths equal?
15/20 + 6/20 = 21/20 or 1 and 1/20
What is the least common factor of 6 and 15 and 20?
It is 1
What is 6 and 2 3rds fractions divided by 6 and 1 fourth?
6 2/3 / 6 1/4 = 20/3 / 25/4 = 20/3 X 4/25 = 80/75 = 16/15 or 1 1/15
What is the slope of 2 1 -20 -5?
if 2,1 is a point and -20,-5 is another then: y2-y1/x2-x1 is as follows: -5-1/-20-2 = -6/-22 = 6/22 = 3/11
310 plus 34 equals?
6/20 + 15/20 = 21/20 = 1 and 1/20 or 0.3 + 0.75 = 1.05
What is the greatest common factor of 15 24 6 and 12?
No, it is 3:Factors of 12: 1, 2, 3, 4, 6, 12Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30Factors of 15: 1, 3, 5, 15GCF (12, 24, 30, 15) = 3
Complete the pattern below 60 30 20 15 12?
60 to 30 _ -1/2 30 to 20 _ -1/3 20 to 15 _ -1/4 15 to 12 _ -1/5 12 - (12*1/6) = 10
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