hey743358
10.11.2020 •
Mathematics
Carol drove 720 km in 9 hours. What was her rate in km/hr?
Please help
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Ответ:
80 km/hr
Step-by-step explanation:
This is asking for speed.
Speed=Distance/Time
Speed=720/9
Speed=80 km/hr
Ответ:
- 1 - 5i
Step-by-step explanation:
note that i² = - 1
Given
(2 - 3i)(1 - i) ← expand using FOIL
= 2 - 2i - 3i + 3i²
= 2 - 5i - 3
= - 1 - 5i