Answer:
223
Step-by-step explanation:
- it is an arithmetic sequence and we will use this formula
- an = a1+(n-1)d
- now first we will find a1
- a10= a1+(10-1)d
- 48= a1 +9×5
- after simplify
- a1=3
- now using again this formula we can easily find a45
- a45= 3+(45-1)4=223
