The Geometric Sequence Formula:

We have:


Substitute:

the Answer is 4 do order of operations
Answer: 1/2 I believe :-)
3 no. Answer is 33 in my gess
Answer:
b)
c=140°
a= 40°
b=40°
c)
p= 60°
q= 60°
r= 120°
d)
a= 65 °
b= 65°
c= 65°
d= 115°
e=65°
Step-by-step explanation:
Hope it helps