3x - 5y = 15 x - 4y = 12 Substitution method
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Answer:
Step-by-step explanation:
The first step to solve this question is to analyze the given sequence.
We can notice that the difference between 8.5 and 7.15 is
And again the difference between the second and the third term is :
One way to describe all the numbers in the sequence is by using a formula.
We can write :
Given the sequence
with
∈ I
For example :
which verifies our original sequence.
We can obtain any term we want of the sequence.
Some of the terms that complete the sequence are :