Javier's fuel tank holds 12 gallons of gasoline when completely full. He had some gas in the tank and added 10.3 gallons of gasoline to fill it completely. How many gallons of gasoline were in the tank before Javier added some?​

1.7

Step-by-step explanation: 12-10.3= 1.7

1.7

Step-by-step explanation:

You use 12 - 10.3 which is equal to 1.7. So the answer is 1.7

Hope this helps!

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7