Question

What is 3.89 × 10–2 written in standard form?

A.
0.000389

B.
0.00389

C.
0.0389

D.
0.389

Answer 1

multiplying by 10^-2 is the equivalent of moving the decimal point over to the left 2 spaces

Answer 2

to the 2nd power

Answer 3

Thats what the 2 is for

Answer 4

|dw:1476820487419:dw

Answer 5

So it is not A or D, right?

Answer 6

probaly not

Answer 7

Now we just need to know if the numbers before the decimal counts

Answer 8

Im thinking B.

Answer 9

I agree :)

Answer 10

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiMmqHckeXPAhVF5CYKHeijCuwQFggdMAA&url=http%3A%2F%2Fopenstudy.com%2Fupdates%2F52cf3347e4b039126010a952&usg=AFQjCNFsMUgM5MK6jHr-6c9diVVcC9gc0Q