Answer:
A. 3s
Step-by-step explanation:
The height of the object after t seconds is given by:
When will the object hit the ground?
It hits the ground after t seconds, and t is found when . So
3 seconds, so the correct answer is given by option a.
2. (a) A random sample of 10 houses in a particular area, each of which is heated with
1 answer:
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