I don't know if this is what you are looking for, but here is it simplified: 21-2x
-2.083333333333
Step-by-step explanation:
I got a rational number which is -2.083333333
-2x-10x=25
-12x=25
x=-2.083333
Isometries I'm guessing<span>
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Answer:
624 square inches of cardboard were used to make the box.
Step-by-step explanation:
Slant height of the box = l = 20 inches
Side of the base of the box = s = 12 inch
Area of the base = 
Area of triangular face = 
There are 4 triangle faces, and single square base , so the total area is :



624 square inches of cardboard were used to make the box.