Answer
Please see the work below.
Work Step by Step
We know that
(a) $(12.5)^3=1.95\times 10^3$
(b) $12.5\times 5.21=65.1$
(c) $\sqrt{12.5} -1.2=3.54-1.2=2.3$
(d) $(12.5)^{-1}=\frac{1.00}{12.5}=0.0800\times 10^{-2}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.