Express results in scientific notation (4.2 x 103) * (3.5 x102)

0,0056542  write in scientific notation to two significant figures

(4.8 x 10-14 ) (2.0 x 109) in scientific notation

Calculate: 6.96 × 107 6.00 × 105 Write your answer in scientific notation. ☐ x10

Calculate: (-1.10 × 10³) (4.00 × 10¯²) Write your answer in scientific notation. 10 X

I submitted this question just a bit ago and I received an answer that totally makes sense ......  2.5 x 10^-9 Yet my textbook is saying this answer is incorrect. Can you help me?

Is 74.5 x105 written using scientific notation

None

Do the following calculation and report your answer with the correct number of significant figures. Write your rounded answer in the blank below. (23.780 x 0.00054)

The measurement 4.3 x 103 g also could be written as