How many significant figures are represented in each of the following numbers? a) 7.1 x 10^-5 b) 0.00677 c) 750

a) 7.1 x 10⁻⁵ : 2 significant figures

b) 0.00677 : 3 significant figures  

c) 750 : 2 significant figure  

Explanation:

The significant digits or figures refers to the digits of a given number that carry meaning and also contributes to precision of the given number.

a) 7.1 x 10⁻⁵ = 0.000071 : 2 significant figures, leading zeros are not significant.

b) 0.00677 : 3 significant figures, leading zeros are not significant.          

c) 750 : 2 significant figure, trailing zeros are not significant.        

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

the correct answer is:

a. formation of precipitation