8+4=12
9+7=16
12^2=144
16^2=256
144+256=400
square root of 400 is 20
therefore the distance from (8, -7) to (-4,9) is 20.
Answer:
Step-by-step explanation:
total metre = 10m
If one piece is 4m then 2m more then that = 4 + 2 = 6m
So total = 4 + 6 = 10m
Step-by-step explanation:
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Answer:
The diver will be in free fall for
seconds.
Step-by-step explanation:
The distance in feet, that an object falls in t seconds is given by the function
.
Now, given that the height is 4800 feet and we have to calculate the number of seconds the diver was in a free fall.
Therefore,
⇒
⇒
seconds.
Therefore, the diver will be in free fall for
seconds. (Answer)
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