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Sagot :
Answers:
- A) r = d/t
- B) 221,760 feet per hour
- C) 42 miles per hour
- D) Miles makes more sense
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Work Shown:
Part A
d = r*t
d/t = r*t/t ...... dividing both sides by t
d/t = r
r = d/t
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Part B
Plug in the distance d = 665,280 feet and the time t = 3 hours
You should get the following
r = d/t
r = (665,280 feet)/(3 hours)
r = 221,760 feet per hour
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Part C
Divide by 5280 to convert from feet to miles.
This works because 5280 feet = 1 mile
665,280 ft = (665,280)/(5280) = 126 miles
The dolphin can swim 126 miles in 3 hours
r = d/t
r = (126 miles)/(3 hours)
r = 42 miles per hour
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Part D
From my viewpoint, miles makes more sense because we have a smaller number which is easier to remember.
126 is smaller than 665,280
Also, 42 is much smaller than 221,760.
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