Question

.00309*10^-9
convert to scientific notation.

Answer 1

3.09 * 10^-11

Answer 2

thanks

Answer 3

Welcome!

Answer 4

You want to convert to a multiply of 10^ something where you keep the same number of significant figures as shown. Future reference

Answer 5

Also where you have only 1 digit in the ones place and the rest in the decimal places by using multiples of 10

Answer 6

would .00306*10^-15 be the same?
like 3.06*10^-17?
& i don't understand johnbc

Answer 7

It is actually moved 3 decimal places to the right so you know that each of those decimal places represents a multiply of 10 then you want to know whether it is a positive or negative multiply

Answer 8

Let me show you an example

Answer 9

\[0.000345 = 3.45 \times 10^-4\]

Answer 10

oh ok i understand. thanks!

Answer 11

because we moved the decimal place to the right 4 times and to get it back to its original place we would have to multiply it by 10 negative 4 times

Answer 12

No problem, if you understand you will see that the answer eng_chen gave you is wrong

Answer 13

oh so its 10^-12

Answer 14

Correct! great job

Answer 15

thanks!

Answer 16

My pleasure

Answer 17

so for 709.3*10^5 it would be 7.09*10^8?

Answer 18

Well how many decimal places did you move it to get from 709.3 to 7.09?

Answer 19

two

Answer 20

Another thing is that you are missing a number since you had 4 significant figures in the beginning you will need 4 significant figures at the end so it would be 7.093 x 10^ something

Answer 21

So if it only moved 2 decimal places how much 10s should be add to that 5?

Answer 22

7

Answer 23

Correct! Great job

Answer 24

ok, thanks