Answer:
dang I'm sorry I'm only in middle school but dang that's a lot
The first five terms of the sequence are 1, 4, 7, 10, 13.
Solution:
Given data:


General term of the arithmetic sequence.
, where d is the common difference.
d = 3

Put n = 2 in
, we get



Put n = 3 in
, we get



Put n = 4 in
, we get



Put n = 5 in
, we get



The first five terms of the sequence are 1, 4, 7, 10, 13.
-5 times -5= 25
because the negative times negative=positive
Answer:
20
Step-by-step explanation:
Because 8 times 5 is 40, and if it is a triangle then it should be 20 because area as a triangle is base times height divided by two.