Puteti sa ma ajutati va rog
1 answer:
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Answer:
Step-by-step explanation:
The table shows values of for different values of
.
Let us test each equation with the values given in the table.
Equation 1:
For = 1, we get,
So, we got 1 for . But as per table, value of
should be -5.
So, equation 1 is incorrect.
Equation 2:
For = 1, we get,
So, we got -5 for . It matches with the value of table.
Let us check for another value of in order to confirm.
For , we get,
So, we got -4 for . It matches with the value of table.
So, equation 2 is the correct answer.
We can be completely sure by checking the remaining equations too.
Equation 3:
For = 1, we get,
So, we got -1 for . But as per table, value of
should be -5.
So, equation 3 is incorrect.
Equation 4:
For = 1, we get,
So, we got -7 for . But as per table, value of
should be -5.
So, equation 4 is incorrect.
Answer:
a₁₈ = 113
Step-by-step explanation:
There is a common difference d between consecutive terms
d = 49 - 45 = 53 - 49 = 57 - 53 = 4
This indicates the sequence is arithmetic with n th term
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 45 and d = 4, then
a₁₈ = 45 + (17 × 4) = 45 + 68 = 113
