Answer:

Step-by-step explanation:
Method 1:
Arithmetic sequence is in the form

d is the common difference, can be found by:

Subtituting the
and 
You get:

Method 2 (Mathematical induction):
Assume it is in form 
Base step: 
Inducive hypophesis: 
GIven: 

Proved by mathematical induction

45 because 180 divided by 2=90 and 90 divided by 2= 45 because she needs area which is length times width= area and area divided by length or width= the other
Answer: 0.31 is the decimal form of 31%
Step-by-step explanation:
6h + 21 please mark brainliest
(f o f^-1) x = x
therefore (f o f^-1) 4 = 4
Its A