calculate 4.8 x 10^-3 - 9.4 x 10-6 . Express the answer in scientific notation rounding to 2 decimal places.
4.8 x 10^-3 - 9.4 x 10^-6 can be rewritten as 4.8 x 10^-3 - 0.0094 x 10^-3.
Combining like terms, we get 4.8 x 10^-3 - 0.0094 x 10^-3 = (4.8 - 0.0094) x 10^-3 = 4.7906 x 10^-3.
Rounding to 2 decimal places, the answer in scientific notation is 4.79 x 10^-3.
To calculate 4.8 x 10^-3 - 9.4 x 10^-6, you need to subtract the numbers separately and then combine them.
First, subtract the coefficients: 4.8 - 9.4 = -4.6.
Next, subtract the exponents: 10^-3 - 10^-6 = 10^-3.
Combining the coefficient and exponent, the answer is -4.6 x 10^-3.
Finally, express the answer in scientific notation rounded to 2 decimal places. Since the coefficient is -4.6 and the exponent is -3, the answer is -4.60 x 10^-3.
To calculate the expression (4.8 × 10^-3) - (9.4 × 10^-6), follow these steps while keeping the numbers in scientific notation:
Step 1: Subtract the decimal numbers: 4.8 - 9.4 = -4.6
Step 2: Subtract the exponents: 10^-3 - 10^-6 = 10^(-3 - (-6)) = 10^-3 + 6 = 10^3
Step 3: Multiply the result from Step 1 with the result from Step 2: -4.6 × 10^3
Step 4: Round the result to two decimal places: -4.6
Therefore, the answer to (4.8 × 10^-3) - (9.4 × 10^-6) expressed in scientific notation and rounded to two decimal places is -4.6.