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Fourth term of arithmetic sequence is 141 seventh term is 132 what is the 1st term?
Wiki User
∙ 10y ago
You could do this the long way and solve for the common difference but, in this particular case, there is a short cut because 7 - 4 = 3 = 3 - 1
As a result,
U7 - U4 = U4 - U1
so that U1 = 2*U4 - U7 = 2*141 - 132 = 150.
Wiki User
∙ 10y ago
Krysly Tatiana Bello...
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Rule to finding terms in a arithmetic sequence?
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One number, such as 7101316 does not define a sequence.
What is the nth term in the arithmetic sequence?
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How do you use a arithmetic sequence to find the nth term?
The difference between successive terms in an arithmetic sequence is a constant. Denote this by r. Suppose the first term is a. Then the nth term, of the sequence is given by t(n) = (a-r) + n*r or a + (n-1)*r
What is the difference between an arithmetic sequence and a geometric sequence?
In an arithmetic sequence the same number (positive or negative) is added to each term to get to the next term.In a geometric sequence the same number (positive or negative) is multiplied into each term to get to the next term.A geometric sequence uses multiplicative and divisive formulas while an arithmetic uses additive and subtractive formulas.
