Question

Due this Thursday.. help pls.​

Answer 1

9514 1404 393

Answer:

  9.90×10^-15

Step-by-step explanation:

The leading non-zero digit must be move 15 places to the left to put it in the units place. Having done that, its original value will be restored by multiplying by 10^-15.

Rounded to 3 significant figures, 989912345 becomes 990. The trailing zero must be kept as part of the number to indicate that there are 3 significant figures.

In scientific notation, the number is ...

  9.90×10^-15

_____

Additional comment

If the number can be copied and pasted to a spreadsheet, it can be formatted to scientific notation with the required number of digits. Here, we can't copy the number from the image, so we have marked off the decimal places in a way that makes them easier to count. Copying the given number text would avoid any transcription errors.