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Earn +20 ptsQ: What is the first term 2 common difference of 3?
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What are the first ten terms of a sequence whose first term is -10 and whose common difference is -2.?
-8
What are the first ten sequences whose first term is -10 and whose common difference is -2?
-8
What is the 12th term of a geometric sequence in which the common ratio is 2 and the first term is 12?
36
The ninth term of an arithmetic progression is 54 and the sum of the 12 terms 438 find the first term and the common difference?
t(n) = a + 8*d = 54 .. .. .. .. .. .. .. (A) s(12) = 12*a + 66*d = 438 .. .. .. .. (B) 12*(A) - (B) => 12*A + 96*d -12*A - 66*D = 648 - 438 => 30*d = 210 = d = 7 Then substituting this value in (A) gives a + 54 = 54 => a = -2 So the first term is -2 and the common difference is 7.
What is the nth term for 11 9 7 5?
Oh, dude, it's like a pattern party! So, to find the nth term for this sequence, you first need to figure out the pattern. Looks like each number is decreasing by 2. So, the nth term would be 13 - 2n. Easy peasy, right?
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