A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the person’s weight, in pounds, when expressed to
the correct number of significant figures?
A. 190 lb
B. 180 lb
C. 52 lb
D. 39 lb
A. 190 lb
B. 180 lb
C. 52 lb
D. 39 lb
2 answers:
Answer:
190 pounds
Explanation:
Given that
A pound is approximately 0.45 kilogram
A person weighs 87 kilograms
Now change the unit form kilogram to pounds as follows:
1 pound / 0.45 kilogram * 87 kilograms
= 193.3 pounds
Now expressed to the correct number of significant figures
193.3 pound = 190 pounds
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The explanation:
according to attached table:
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and They both have β- decay mode and with half-lives greater than hour.
