The histogram shows the birth weights of 1000 mice.
Frequency density
18
20
6 8 10 12 14 16
Birth weights (grams)
Work out the number of mice with birth weights below 10 g.

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.

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x