Question

(7.2x10^4)+(7.0x10^5)

Answer 1

To add the numbers \(7.2 \times 10^4\) and \(7.0 \times 10^5\), we need to express them with the same exponent.

First, we can convert \(7.2 \times 10^4\) to the same exponent as \(7.0 \times 10^5\):

\[
7.2 \times 10^4 = 0.072 \times 10^5
\]

Now we can add the two numbers:

\[
0.072 \times 10^5 + 7.0 \times 10^5 = (0.072 + 7.0) \times 10^5 = 7.072 \times 10^5
\]

Thus, the sum is:

\[
\boxed{7.072 \times 10^5}
\]