The equation of circle is

Answer:
n=10
Step-by-step explanation:
You need n to be 10 because: y^20= (y^10)^2
Green 5/15
red 2/15
that should be your answer
Obtuse angle that’s the answer
Answer:
C
Step-by-step explanation:
how i figured this out was not by using the table, but you can use the table
i just asked myself what two numbers multiplied together has a product of -12, one number must me negative
the two numbers must also add up to -4, meaning the bigger number had to be negative
the only answer that worked was 2 and -6