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  

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates