What is the nth term of the arithmetic sequence 7,5,3,1?
1 answer:
Answer:
tn = 7 + (n - 1)*(-2) or
tn = 9 - 2n
Step-by-step explanation:
You are (beginning with 7) subtracting 2 from the term to the left.
a = 7
d = -2
tn = a1 + (n - 1)*d
tn = 7 + (n - 1)*(-2)
Try this out on n = 4
t4 = 7 + (4 - 1)*-2
t4 = 7 + (3) (-2)
t4 = 7 - 6
t4 = 1 just as it says.
More generally
tn = 7 + (n - 1)*-2
tn = 7 + (-2n) + 2
tn = 9 - 2n
You might be interested in
Answer:
y=x-2
Step-by-step explanation:
if x: 5, x-2=3
y=x-2
therefore:
y=3
x=5
I think that’s it f(x)=2x−12
F(x) = 3x^3 -2x^2 - 19x -6
Answer:
6 9/26
Step-by-step explanation:
