Calculate 4.8×10^−3 −9.4×10^−6 . Express the answer in scientific notation rounding to 2 decimal places

Answer 1

To subtract the two given numbers in scientific notation, we need to make sure that the exponents are the same.

Let's start by converting the second number to the same exponent as the first number.

4.8 × 10^(-3) - 0.0094 × 10^(-3)

Now, let's subtract the two numbers:

4.8 - 0.0094 = 4.7906

Since the question asks for the answer in scientific notation, we need to rewrite 4.7906 in scientific notation.

4.7906 can be written as 4.79 × 10^(0) by moving the decimal point two places to the right.

However, since it asks for the answer rounded to 2 decimal places, we need to round the 4.79.

So the final answer is:

4.8 × 10^(-3) - 9.4 × 10^(-6) = 4.79 × 10^0