what is 8.2 x 10^7 minus 4.1 x 10^6 in scientific notation

Answer 1

To subtract numbers in scientific notation, we need to make their exponents the same.

8.2 x 10^7 - 4.1 x 10^6 can be written as:

(8.2 x 10^7) - (0.41 x 10^7) (since 4.1 x 10^6 can be written as 0.41 x 10^7)

Now, since the exponents are the same, we can subtract the coefficients:

8.2 - 0.41 = 7.79

We keep the exponent from the numbers being subtracted:

7.79 x 10^7

So, 8.2 x 10^7 - 4.1 x 10^6 in scientific notation is 7.79 x 10^7.