The value of (9x10^8)(5x10^9) is closest to which of the following?
Choose the correct answer.
A) 10^19
B) 10^15
C) 10^16
D) 10^14
E) 10^12
multiplying these we get,   45 x 10^8 x 10^9   = 4.5 x 10^18   which is closer to 10^19   10^19nswer: 10^19
<result>A</result>
The value of (9x10^8)(5x10^9) is closest to which of the following?