Question #0fc9d

1 Answer
Sep 18, 2015

a) 4 s.f.
b) 4 s.f.
c) 3 s.f.

Explanation:

The number of significant figures in each case are as follow:

a) 0.007160xx10^5 4 significant figures.

three leading zeros don't count. one trailing zero in a number that has a decimal point counts. the 10^5 this is for scientific notation don't count.

b) 0.0004100xx10^7 4 significant figures.

Same as aforementioned, however, here we have two trailing zeros that count.

c) 0.00900 3 significant figures.

enter image source here

A screenshot taking from my teaching notes.