Which shows the expression below simplified?

(7 × 10^-5) × 0.0008

A. 1.5 × 1020

B. 5.6 × 10-8

C. 5.6 × 1020

D. 5.6 × 10-9

Question

Which shows the expression below simplified?


(7 × 10^-5) × 0.0008 



  A.    1.5 × 1020  


  B.    5.6 × 10-8  


  C.    5.6 × 1020  


  D.    5.6 × 10-9

snowfire · Answer

Multiply the 7 by the 8, you get 56. Now you have .0001 instead of .0008, which you can multiply to the 10^-5 by counting the amount of digits behind the 0 and subtracting that from the exponent.

snowfire · Answer

I'm trying to teach, not hand out answers. You shouldn't ruin his learning process by doing that.

snowfire · Answer

Or her, sorry for the sex assumption, just a habit.

anonymous · Answer

I thin its b