Answer:she dosnt have enough
Step-by-step explanation:bored
The answer is 6 since 2*6 is 12 and 12-8 is 4
Answer:
an = 88+9
Step-by-step explanation:
Answer:
a[n] = 6n -3
Step-by-step explanation:
The n-th term of an arithmetic sequence with first term a[1] and common difference d can be written as ...
... a[n] = a[1] + (n-1)·d
We can use any of the given terms to find d, and so find the n-th term.
... a[4] = 21 = 3 + (4-1)d
... 18/3 = d = 6 . . . . . subtract 3, divide by 3
So, the n-th term is ...
... a[n] = 3 + (n-1)·6 = 3 + 6n - 6
... a[n] = 6n -3
_____
<u>Check</u>
a[1] = 6·1 - 3 = 3 . . . yes
a[4] = 6·4 -3 = 21 . . . yes
a[10] = 6·10 -3 = 57 . . . yes
Two lines that intersect at 90 degrees are considered perpendicular to each other.
