Question

Item 10

Evaluate the expression. Write your answer in scientific notation.

(4.2×10^8)+(5.9×10^9)=

Answer 1

1420000005.9

Explanation:

(4.2*10^8)+(5.9+10^9)

(4.2*100000000)+(5.9+100000000)

420000000+1000000005.9

1420000005.9