Answer:
23
Step-by-step explanation:
<h3>Arithmetic sequence:</h3>
In arithmetic sequence, the difference between any consecutive terms is constant and the progression goes either in ascending order or in descending order.
a = first term = 2
a₂ = 5
difference = d = second term - first term
= 5 - 2
d = 3
Formula for finding nth term in arithmetic sequence:
![\sf \boxed{t_n = a + (n-1)*d}](https://tex.z-dn.net/?f=%5Csf%20%5Cboxed%7Bt_n%20%3D%20a%20%2B%20%28n-1%29%2Ad%7D)
t₈ = 2 + (8 -1) * 3
= 2 + 7 *3
= 2 + 21
t₈ = 23
Answer:
-13
Step-by-step explanation:
it's right but i hope i helped u'r welcome
Answer:
If you mean "the difference between a number AND 12 is 20" the x-12=20
Step-by-step explanation:
"difference" means subtraction and "and" indicates where that sign goes. "is" means "=".
Answer:
f(-3) = 15
Step-by-step explanation:
Given that,
f(x) = -x + 12
You have to solve for,
f(-3) = ?
For that,
you have to put (-3) instead of x
f (-3) = -x + 12
= -(-3) + 12
= +3 + 12
= 15
Hope this helps you.
Let me know if you have any other questions :-)