Answer:
8.03x10^5
Step-by-step explanation:
(3.3x10^4)+(7.7x10^5)
first put them into standared form.
33000+770000
then add.
803000
then put back into scientific notation.
8.03 x 10^6
(3.3 x 10^4) + (7.7 x 10^5)= 803000 and move the decimals 6 places to get it behind the 8
