Question

Subtract 2.5x10to the power4 from 3.9x10 to the power 5 with due regard to significant figures.

Answer 1

Answer :

3.6×105

Solution :

3.81×105−2.5x104=105(3.81−0.25)

=3.56×105

Rounding off to one place of decimal,

difference =3.6×105

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Answer 2

Explanation:

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