Question

What is (6.91 x 10-2 power) + (2.4 x 10-3 power) ? Express your answer in scientific notation.

Answer 1

can't add these numbers till you get their powers of 10 to match. So, doing that, we get

6.91x10^-2 - 0.24x10^-2 = 6.67x10^-2

Answer 2

Uhm, if you want it correct then do these step,
(6.91 x 10-2 power) + (2.4 x 10-3 power)= 0.691+2.4 = 3.091 x 10-3 power
we move . from 6. to 0.6 because the power isn't the same so we add the lower power by moving dots and +1 the power or -1 if Neg^.

Answer 3

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