Respuesta :
Answer:
2.60 mm drop or -2.60 mm from zero
Step-by-step explanation:
Level in the river continues dropping at an average rate of 1.05 mm/year
So total variation is the total drop over the period of 2.48 years and is:
- 1.05 mm/year * 2.48 year = 2.60 mm
So total variation is 2.60 mm drop or -2.60 mm from zero level
Answer:
The decrease of the decimal rate -1.05 mm/year can be rounded to -1. You don’t need to round 2.48 because you’re multiplying by -1. Since -1.05 is negative and rounded to a greater value, the estimate could be adjusted to a slightly lesser value, maybe -2.5 or -2.6.
Step-by-step explanation: