Homework Help: Math

Posted by Connie on Tuesday, October 11, 2011 at 6:08pm.

The number 80710 is rounded to 2 SF?

The choices are confusing
A) 80700 B)81000 C)8070 D)8100 E) None

Is E correct?
B and D are both 2SF A and C are 3SF???

Thanks for you help.

Math - PsyDAG, Wednesday, October 12, 2011 at 2:11pm
You started out with over 80 thousand, so C and D are not correct. The two significant figures should be in the ten thousand and thousand columns.

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