Apound 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

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  

It idk haha what are we doing?

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.