Please.

Find BC. If AB = x, BC = 8x-4 and AC =77°.

91 1/9

Step-by-step explanation:

Because this is clearly a triangle, the total number of degrees all the angles add up to is 180 degrees. In this scenario, we have

Combining like terms, we have

Combining like terms again, we have

Subtracting 73 on both sides, we have

Dividing by 9 on both sides, we have

Plugging back into BC = 8x - 4, we have

Combining like terms, we have , which is

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.