Answer:
Note that i= √-1 so you say √-25=√25i so the answer is 5i
This question is simply conversions
we know there are 100 cm in a m so..
50 × 100 = 5,000 cm/s
and we know there are 1,000 m in a know so..
50 ÷ 1,000 = 50/1,000 = 1/20 km/s
B is true
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Height without rounding - 5.89
5.89
Rounded - 5.9 feet tall