Use your calculator to evaluate e^-3. Round your answer to three decimal places.?

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Answer 1 · 2017-11-23T08:39:20

#e^(-3)=0.050#

calculator value

#e^(-3)=0.04978706837#

to# 3 dps#

we discard the dps after the third but consider the third for rounding purposes.

#e^(-3)=0.049color(red)(7)color(blue)(8706837)#

the fourth figure is a #7# because this is greater than #5# we round the third figure up

#e^(-3)=0.050#

the final #0# must be present in order have the three dps