Mack the bug starts at (0,0) at noon and each minute moves one unit right or one unit up. he is trying to get to the point (5,7). however, at (2,3) there is a spider that will eat him if he goes through that point. in how many ways can mack reach (5,7) ?

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.