Calculate 4.8 X 10^-3 — 9.4 X 10^-6. Express the answer in scientific notation rounding to 2 decimal places.
To calculate the expression, we subtract the second number from the first:
4.8 X 10^-3 - 9.4 X 10^-6 = 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 final answer is:
4.79 X 10^-3
To calculate the subtraction of these numbers in scientific notation, we need to first express both numbers with the same exponent.
So, let's write both numbers with the same exponent of 10:
4.8 X 10^-3 = 0.0048 (since 10^-3 = 0.001)
9.4 X 10^-6 = 0.0000094 (since 10^-6 = 0.000001)
Now we can subtract these numbers:
0.0048 - 0.0000094 = 0.0047906
Expressing this answer in scientific notation, rounded to 2 decimal places, gives us:
4.79 X 10^-3
To calculate 4.8 X 10^-3 - 9.4 X 10^-6, we need to follow a few steps:
Step 1: Convert both numbers to the same power of 10.
- 4.8 X 10^-3 = 4800 X 10^-6
- 9.4 X 10^-6 (already in the desired form)
Step 2: Subtract the two numbers:
- 4800 X 10^-6 - 9.4 X 10^-6 = 4790.6 X 10^-6
Step 3: Express the result in scientific notation:
- 4790.6 X 10^-6 = 4.79 X 10^-3
Finally, rounding the answer to two decimal places, we get: 4.79 X 10^-3.