Answer: option a.
Step-by-step explanation:
By definition, we know that:
Substitute into the first equation, solve for the cosine and simplify. Then, you obtain:
As then :
Now we can find :
Find the factors from the roots, then multiply the factors together.
y
=
x
2
−
21
x
+
104
Nearest tenth = 8.0
Nearest hundredth = 7.95
Nearest ones = 8
Answer:
76 percent
Step-by-step explanation: