What is the 6th term in the arithmetic sequence defined by the explicit formula an=8n-3?
1 answer:
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Answer:
Ram: 21, Hari: 12
Step-by-step explanation:
To solve the problem, we can use the following notation. We call:
= Ram's age at present
= Hari's age at present
We know that:
- Ram is 9 years older than Hari --> mathematically, this can be written as
- Three years ago, Ram was two times as old as Hari was --> mathematically, this can be written as
where (r-3) is Ram's age 3 years ago, while (h-3) is Hari's age 3 years ago
Substituting eq.(1) into eq.(2), we find:
So, Hari's age is 12; therefore, Ram's age is
Answer:
Step-by-step explanation:
Given the function and the output
when
, we can write the equation:
We can insert the value of into the function to verify the output equals
:
∴ We have verified that
Hope this helps :)