Answer:
7.42 x
Explanation:
If we wrote this number out in standard form, it would be .00000742 You would read this 742 and then name the place where the last digit 2 is at.
Tenths, hundredths, thousandths, ten-thousandths, hundred-thousandths, millionths, ten-millionths, hundred-millionths. The 2 is 8 places to the right of the decimal.
Now we will change this into scientific notation. We need to move the decimal so that the number will be between 1 and 10.
7.42 We could how many places and what direction we moved the decimal point. This will tell us our power of 10. We moved the decimal 6 places to the right. That means that the true value of the number is smaller by the power of 6, but because it is smaller it will be the to the power of -6
7.42 x