Calculate 4.8x10^-3 - 9.4x10^-6. Express the answer in scientific notation rounding to 2 decimal places.

Answer 1

To subtract the two numbers in scientific notation, we need to have the same power of 10. Let's rewrite the numbers with the same exponent:

4.8x10^-3 = 0.0048
9.4x10^-6 = 0.0000094

Now, subtract these two numbers:

0.0048 - 0.0000094 = 0.0047906

To express the answer in scientific notation rounding to 2 decimal places, we need to move the decimal point 4 places to the left since 0.0047906 is greater than 1. We get:

0.0047906 = 4.79x10^-3