Calculate 4.8 x 10^-3- 9.4 × 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 simplified to (4.8 - 9.4) x 10^-3.
First, subtract 9.4 from 4.8: 4.8 - 9.4 = -4.6.
Then, we have -4.6 x 10^-3.
Finally, express the answer in scientific notation with 2 decimal places: -4.6 x 10^-3.
Therefore, the answer is -4.6 x 10^-3.
To calculate 4.8 × 10^-3 - 9.4 × 10^-6, we need to perform the subtraction and express the answer in scientific notation.
1. First, let's subtract the numbers:
4.8 × 10^-3 - 9.4 × 10^-6 = 4.8 × 10^-3 - 0.0094 × 10^-3
2. Since both numbers have the same exponential term (-3), we can subtract the coefficients:
4.8 - 0.0094 = 4.7906
3. Now, we need to express the result in scientific notation. To do this, we count the number of places we moved the decimal point. In this case, we need to move the decimal point three places to the left to get 4.7906.
4. Finally, we round the result to two decimal places, which gives us the final answer:
4.79 × 10^-3
So, the answer is 4.79 × 10^-3 in scientific notation, rounded to two decimal places.
To calculate the given expression, we first subtract the second number from the first number:
4.8 x 10^-3 - 9.4 x 10^-6
To subtract numbers written in scientific notation, the exponents of the powers of 10 must be the same. So, let's rewrite the second number with the same exponent as the first number:
4.8 x 10^-3 - 0.0094 x 10^-3
Now, we can subtract the numbers and keep the exponent the same:
(4.8 - 0.0094) x 10^-3
Simplifying:
4.7906 x 10^-3
To express this answer in scientific notation, rounded to 2 decimal places, we can write:
4.79 x 10^-3