Answer:2.04x10 to the 4th
Explanation:
multiply 20.4 x 1000
Then write the answer like this: 20,400
now make a decimal under ten countaining all #s that arent 0: 2.04
count the decimal places between the end of the 2 and the last 0 in the number 20,400
There are 4 places so thats 10 the power of 4
Now just put it all together