An object has an acceleration of 12.0 m/s/s. If the net force acting upon this object were doubled, then its new
acceleration would be

Hahahah jsu’s hsjshshsh. shjshshshsh.

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have  27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be  -5/18

Answermuch larger;

The density of the block of iron is lees than the density of mercury but the density of the block of iron is greater than the density of water