Question

4.4951 X 10^9 - 57.9 X 10^7

Step by step in scientific notation.

Answer 1

To subtract numbers in scientific notation, the exponents must be the same.

First, rewrite the numbers in scientific notation:

4.4951 X 10^9 = 4495100000
57.9 X 10^7 = 579000000

Since the exponents are not the same, we need to adjust them.

To adjust the exponents, we can move the decimal point in each number until there is a common exponent. So, let's shift the decimal point in 4495100000 by 2 places to the right to align the exponents:

4495100000 = 44.951 X 10^10

Now that the exponents are the same (10), we can subtract the numbers:

44.951 X 10^10 - 579000000 = 44.951 X 10^10 - 5.79 X 10^8

Next, we can subtract the mantissas (the numbers before the exponent):

44.951 - 5.79 = 39.161

Finally, we can write the result in scientific notation:

39.161 X 10^10

So, 4.4951 X 10^9 - 57.9 X 10^7 is equal to 39.161 X 10^10.