solution to (4 x 10^3) x (6 x 10^6) written in scientific notation

24 x 10^9
2.4 x 10^9 THIS ONE
24 x 10^18
2.4 x 10 ^10

1 answer

No

24 * 10^9 would work but
number on on left at least 1 and at most 9 which you knew
but if you divide the left by ten, you must multiply the right by ten
24/10 * 10^1 * 10^9
= 2.4 * 10^10