Question

Find the sum of (8.6 x 106) and (3.7 x 105). Write the final answer in scientific notation.
8.97 x 105
8.97 x 106
1.23 x 1010
12.3 x 1011

Answer 1

Answer:

8.97 x $10^{6}$

Step-by-step explanation:

To add in scientific notation, the exponents need to be the same for the bases of 10.  You can either make them both to the exponent of 6 or 5.  It does not matter.  I made them both to the power of 5

(8.6 x $10^{6}$) + (3.7 x $10^{5}$)

(86 x $10^{5}$) + (3.7x$10^{5}$)  

(86 x 3.7) x $10^{5}$

89.7 x$10^{5}$  Rewrite in scientific notation

8.97 x $10^{6}$