8. (2 × 10^3)(4 × 10^–5)
A. 8 × 10^–2
B. 0.8 × 10^–2
C. 8 × 10^–1
D. 8 × 10^2

Question

8.   (2 × 10^3)(4 × 10^–5)  
A. 8 × 10^–2
B. 0.8 × 10^–2
C. 8 × 10^–1
D. 8 × 10^2

rcp031 · Answer

2*4*10^(3-5) gives answer

will.h · Answer

Is that x or a multiply sign

mellamokatie · Answer

Wait let me see

mellamokatie · Answer

Yes it is

shadowlegendx · Answer

$$(2 \times 10^3)(4\times 10^{-5})$$

mellamokatie · Answer

Yes perfect thank you

mellamokatie · Answer

I think I know what you would do can I say?

mellamokatie · Answer

Do you multiply the exponents 3(-5)?

will.h · Answer

Okay so this case require to simplify the expression
2 * 4 = 8
And 10^3 * 10^-5 here we can simply that by adding the exponent because in multiply property we add the exponents for the expressions with the same base 
So 10^3 * 10^-5 = 10^ 3+ (-5) 
So 10^-2 
So the final expression would be 
8 x 10^-2

rcp031 · Answer

no, actually it is like $$1000/100000=1/100$$

will.h · Answer

Let me know if you have additional questions

mellamokatie · Answer

Thank you