Answer:
9 x 10^16
Step-by-step explanation:
when adding or subtracting in standard form (aka scientific notation), the powers of 10 need to be the same. If they are just add the numbers and keep the same power of 10
Answer:
[tex]\huge\boxed{2\times10^{16}+7\times10^{16}=9\times10^{16}}[/tex]
Step-by-step explanation:
[tex]2\times10^{16}+7\times10^{16}\qquad\text{use the distributive property}\\\\=(2+7)\times10^{16}=9\times10^{16}[/tex]
