To find the missing number in the sequence, we can first observe the pattern in the given numbers:
- The first term is missing.
- The second term is -89.
- The third term is -97.
- The fourth term is -105.
- The fifth term is -113.
Next, let's identify the differences between the consecutive terms:
- From -89 to -97: -97 - (-89) = -8
- From -97 to -105: -105 - (-97) = -8
- From -105 to -113: -113 - (-105) = -8
We see that each term decreases by 8. Therefore, to find the missing first term, we can add 8 to the second term (-89):
- First term = -89 + 8 = -81
Thus, the complete sequence with the missing number would be:
-81, -89, -97, -105, -113
The missing number in the sequence is -81.