2.3x10^8 + 4.7x10^7 =

10^8 and 10^7 is the superscript in Canvas

Group of answer choices

27.7x10^7

2.77x10^8

6.6x10^15

None of the above

Respuesta :

Step-by-step explanation:

both of a and b are correct but I don't know how...

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