10. Determine if the equation x - - y4 = 1 defines y as a function of x.
Yes. One input results in one output.
No. At least one input results in more than one output.
No. At least one output results in more than one input.
Yes. One output results in one input.

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.

the answer is 5/14.

hope this .

the answer for this is 0.25 km. : )