Answer:
a_{n} = a_{1} + (n-1)d
a_n = the nᵗʰ term in the sequence
a_1 = the first term in the sequence
d = the common difference between terms
The general term of an arithmetic sequence can be written in terms of its first term a1, common difference d, and index n as follows: an=a1+(n−1)d. ... The nth partial sum of an arithmetic sequence can be calculated using the first and last terms as follows: Sn=n(a1+an)2.
Answer:
thats great =)
Step-by-step explanation: can i pls have brainliest pls im on one more
Answer:
-27.5
Step-by-step explanation:
If x=1 and y=5 we get as 4product of 1+5=9
=4+5=9
9=9
lhs=rhs
Answer:
$21
Step-by-step explanation:
starting money: 51
cost of each book = 3
total books bought = 10
3*10 = $30 spent on books
51-30 = $21 left
