Divide (5.6 x 10^15) by (6.4 x 10^2). Express your answer in scientific notation.

A)
.875 x 10^17

B)
.875 x 10^13

C)
8.75 x 10^12

D)
8.75 x 10^13

Question

Divide (5.6 x 10^15) by (6.4 x 10^2). Express your answer in scientific notation.
	

A)
	.875 x 10^17 	
	

B)
	.875 x 10^13 	
	

C)
	8.75 x 10^12 	
	

D)
	8.75 x 10^13

testing123guest · Answer

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welshfella · Answer

ok first calculate 5.6 / 6.4

testing123guest · Answer

0.875

welshfella · Answer

right now deal with the exponent part 
10^15  /  10^2 =  ?

welshfella · Answer

- subtract the exponents

testing123guest · Answer

attachment

welshfella · Answer

yes - but you need it in scientific notation

testing123guest · Answer

is it a?

welshfella · Answer

i think you are guessing 
try to work out the following

10^15 / 10^2 = 10^(15-2) =  ?

welshfella · Answer

law of exponents 
x^a / x^b  = x^(a-b)

testing123guest · Answer

sorry my computer crashed i am back now is the answer 10000000000000

testing123guest · Answer

@welshfella