express 2,750,389 in scientific notation.?

Answer 1

2.750389 x 10^6
--> http://www.nyu.edu/pages/mathmol/textbook/scinot.html

Answer 2

First, you need to add a decimal to 2750389 so that the number is between 1 and 10. So, put it between the 2 and 7:

2.750389

In order to change the number from 2750389. to 2.750389, you moved the decmial place 6 places. This is the same as dividing it by 1,000,000. So, you need to multiply the decimal by 10^6 just "fix it".

So the answer is 2.750389 x 10^6

I hope I haven't just done your homework for you! :~}

Answer 3

2.750389 x 10^6

NB In scientific notation there is only one digit to the Left of the decimal point. and the whole is multiplied by 10 to a given power.

In this case the scientific notation could be shortened to
2.75 x 10^6.

Answer 4

Your number is 2,750,389.
Let's round this off and concern ourselves with only the first three digits.
Our number is now 2,750,000.
Rewrite the number so that the decimal is right after the first digit.
2.75
Think about how many places the decimal moved. SIX PLACES.
2.75 x 10^6
2,750,000 = 2.75 x 10^6

Answer 5

2.750389 x 10^6

Answer 6

It depends on how big you want the exponent to be, but the most common way of writing this would be:

2.750389 x 10^6
or
2.750389E6

Answer 7

2.750389 E 6

or 2.750389 * 10^6

Answer 8

2.75x10^6 (this applies to math)
But if it is in chemistry, it is 2.750389 x 10^6

Answer 9

2.75 x 10^6

Answer 10

2.75 x10 ^6

EDIT: OK DanE yours was more accurate, so I gave you a thumbs up. I think we're doing someone's homework!