Answer:
C -0.6
Step-by-step explanation:
2- -7 = 9
-2 - 13 = -15
9/-15 = -0.6
From 100 to 80 is 8/10, so the recursive formula is
an=a(n-1)*1/8
or
an= a1*1/8(n-1)
an=a1*(n-1)/8
N= 66°
k= 29°
All triangles add up to 180 so that’s how i got those
D for sure I hope it helps and I know I’m 100% right because I already had this question somewhere else dude so yeah