Answer:
12.8km/hr
Step-by-step explanation:
Distance = 76.8km
Time = 6 hours
Speed = distance ➗ time
Speed = 76.8km ➗ 6 hours
Speed = 12.8km/hr
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X + y = -15. Subtract x from both sides.
y = -x - 15. This is as far as we can go with the provided information.
A= 20.83 square units
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