Question

what is (7.4x10^-9 ) x (5x 10^-3) symplified in scientific notation?

Answer 1

asked already? multiply
\[7.4\times 5\] then add the exponents
\[-9+-3\]

Answer 2

you get
\[37\times 10^{-12}\] but it is not in scientific notation now, because
\[37>10\] so you have to replace 37 by 3.7 and make the answer
\[3.7\times 10^{-11}\]

Answer 3

3.5x10^-11is what ithought but that was not a choice.

Answer 4

the number out front should be 3.7