SOLUTION: Express the following in scientific notation (a) (9.7 * 10^8)(8.5 * 10^3) (b) (5.5 * 10^-7) / ( 9.1* 10^-2)

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Question 4594: Express the following in scientific notation
(a) (9.7 * 10^8)(8.5 * 10^3)

(b) (5.5 * 10^-7) / ( 9.1* 10^-2)
Answer by Abbey(339) About Me  (Show Source):
You can put this solution on YOUR website!
The commutative property of multiplication means that we can multiply numbers in any sequence, so first multiply the numbers that are NOT 10 raised to a power.
9.7%2A8.5+=+82.45 = 8.245+%2A+10%5E1
so now we have 8.245%2A10%5E1%2A10%5E8%2A10%5E3
add the exponents to get the solution
8.245%2A10%5E12
5.5*9.1 = 50.05 = 5.005%2A10%5E1
5.005%2A10%5E1%2A10%5E-7%2A10%5E-2 =
5.005%2A10%5E-8