The answer to the question is a
Step-by-step explanation:
HERE,
as,it is a right angle triangle,
x=
![\tt{x=10km. }](https://tex.z-dn.net/?f=%5Ctt%7Bx%3D10km.%20%20%20%20%7D)
Answer:
![a_{n} = 22 + (-3)(n - 1)](https://tex.z-dn.net/?f=a_%7Bn%7D%20%3D%2022%20%2B%20%28-3%29%28n%20-%201%29)
Step-by-step explanation:
The first term is 22. It looks like each term after that is the term before, plus a negative 3.
a-sub-one = 22
common difference = d= -3
Formula for
:
= 25 - 3n
Multiplicative identity, which states that anything multiplied by 1 is itself.