Answer:
it's 80.
Step-by-step explanation:
120-40= 80
....
X=-4 it’s already simplified
<span>To write a small number (between 0 and 1) in scientific notation, you move the decimal to the right and the exponent will have to be negative. You may notice that the decimal point was moved five places to the right until you got the number 4, which is between 1 and 10. The exponent is −5.</span>
I think it is some kind of deicmal
