Answer:
fvgdnsigdv356b cdhfn .44. jcbyd6.5.4.3.3.2.2.3.4.5.6.6.7.7
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Answer:
C. {-9,-3}
Step-by-step explanation:
gives 
if 
. This gives 
, which is valid.
It can also give 
if 
. This gives 
, which is valid.
Hence the solutions are 
.
Answer:
circumference is 81.68
area is 530.93
Step-by-step explanation:
C=2πr=2·π·13≈81.68141
A=πr2=π·132≈530.92916
< 1 and < 2 are vertical angles...because they are opposite angles made by two intersecting lines
< 3 and < 4 are adjacent....because they have a common side and a common vertex
