Question

Escherichia coli (commonly abbreviated E. coli) are commonly found in the lower intestine of warm-blooded organisms (endotherms - you and I). Cells are typically rod-shaped and are about 0.000002 meters in length. What is number written in proper scientific notation?

2.0 x 10-5

2.0 x 10-6

2.0 x 105

2.0 x 106

Answer 1

@alakara_kibo

Answer 2

Which direction must you move the decimal point to make the 2 an integer?
If it is to the left the index will be positive, if it is to the right the index will be negative.

How many places must you move the decimal point?
That is the number of the index of 10.

You should now be able to answer your question.

Answer 3

@DrTony It doesn't say which way to move the decimal point :(

Answer 4

I know.

The question I asked is @In which direction must the decimal point be moved to make 2 an integer'

Answer 5

@DrTony I don't know.

Answer 6

2.00x10^-6
2 times ten to the negative six.
It's a simple calculation; I'm not sure how your unit wants it worded, but basically you count the 2.0 over until it matches the number. If you move it to the right,the number is negative.

Answer 7

sorry i didnt realize u mention my name do u still need my help?

Answer 8

@alakara_kibo No, It's already answered. Thanks though!

Answer 9

ok sorry