Miranda is adding the numbers below.
2.9x10^10 +5.35x10^10
What is the sum written in scientific notation?
A. 82.5x10^11
B. 8.25x10^10
C. 8.25x10^10
D. 82.5x10^-11

Question

Miranda is adding the numbers below.
2.9x10^10 +5.35x10^10 
What is the sum  written in scientific notation?
A. 82.5x10^11
B. 8.25x10^10
C. 8.25x10^10
D. 82.5x10^-11

welshfella · Answer

add the 2.9 to the 5.35  and append the x10^10

welshfella · Answer

scientific notation is of the form


N.NN.. * 10^n     where N.NN..  is a number between 1 and 10 (not including 10)

welshfella · Answer

A 82.5*10^10  is NOT scientific notation because of the 82.5

welshfella · Answer

note that options B and C are the same

anonymous · Answer

Opps C Is Actually 8.25x10^20 sorry

welshfella · Answer

right -  so which on do you think it is?