tn=15-3n
t1=15-3x1=12
t2=15-3x2=9
d=t2-t1/d=9-12=-3
tn=t1+(n-1)xd
tn=12+(12-1)x-3
12+11x-3=12+(-33)=-21=tn
Sn=n/2x(tn+t1)
=S12=12/2 x(-21 +12)
=6 x -9
=-54
To find the sum of the first 28 terms of an arithmetic sequence, you need the first term (a) and the common difference (d). The formula for the sum of the first n terms (S_n) of an arithmetic sequence is S_n = n/2 * (2a + (n - 1)d). Once you have the values of a and d, plug them into the formula along with n = 28 to calculate the sum.
That's an arithmetic sequence.
An arithmetic sequence is defined as a sequence of numbers in which the difference between consecutive terms is constant. The number 35813 on its own does not represent an arithmetic sequence, as it is a single term. To determine if a sequence is arithmetic, you would need at least two terms to check for a constant difference.
No. An 'arithmetic' sequence is defined as one with a common difference.A sequence with a common ratio is a geometricone.
The nth term of an arithmetic sequence = a + [(n - 1) X d]
a1=2 d=3 an=a1+(n-1)d i.e. 2,5,8,11,14,17....
To find the sum of the first 28 terms of an arithmetic sequence, you need the first term (a) and the common difference (d). The formula for the sum of the first n terms (S_n) of an arithmetic sequence is S_n = n/2 * (2a + (n - 1)d). Once you have the values of a and d, plug them into the formula along with n = 28 to calculate the sum.
That's an arithmetic sequence.
An arithmetic sequence is defined as a sequence of numbers in which the difference between consecutive terms is constant. The number 35813 on its own does not represent an arithmetic sequence, as it is a single term. To determine if a sequence is arithmetic, you would need at least two terms to check for a constant difference.
arithmetic sequence
No, the Fibonacci sequence is not an arithmetic because the difference between consecutive terms is not constant
No. An 'arithmetic' sequence is defined as one with a common difference.A sequence with a common ratio is a geometricone.
49
The nth term of an arithmetic sequence = a + [(n - 1) X d]
The sequence is arithmetic if the difference between every two consecutive terms is always the same.
In an arithmetic sequence, "a" typically represents the first term of the sequence. An arithmetic sequence is defined by a constant difference between consecutive terms, known as the common difference (d). The n-th term of the sequence can be expressed as ( a_n = a + (n-1)d ), where ( a_n ) is the n-th term, ( a ) is the first term, and ( n ) is the term number.
Arithmetic Sequence