Question

Calculate 4.8x10⁻3 - 9.4x10⁻6. express the answer in scientific notation.

Answer 1

The subtraction of 4.8x10^-3 and 9.4x10^-6 in scientific notation is 4.7906x10^-3 after aligning the exponents.

Step-by-step explanation:

To calculate 4.8x10−3 - 9.4x10−6 and express the answer in scientific notation, we need to make sure that both numbers have the same exponent. In this case, we will convert 9.4x10−6 to 0.0094x10−3 so that we can subtract directly.

Now, we subtract the two numbers:

• 4.8x10−3
• - (0.0094x10−3)

This gives us 4.7906x10−3. We want to express this in proper scientific notation, so we make sure that the first number (mantissa) is between 1 and 10. Since 4.7906 is already in this range, the final answer in scientific notation is 4.7906x10−3.