Answer: 9.0x10^-6
Step-by-step explanation:
Scientific notation is writing a given number, as a product of a unit number (that can and usually has digits after the decimal point) and a given power of the number 10.
In this case we have:
0.9x10^-5.
This is almost correct, the "correct" way to write this is having a number in the unit place:
So we want to move our number to te left, then we can multiply and divide by 10, because this will not change the value of our number:
(0.9x10^-5)*10/10 = 9.0x10^-5/10 = 9.0x10^-6
