Solution: The missing reason in Step 8 is substitution of
.
Explanation:
The given steps are used to prove the formula for law of cosines.
From step 5 it is noticed that our equation is
..... (1)
From step 7 it is noticed that the value of
is
.
So by substituting
for
in equation (1) we get the equation of step 8, i.e.,

Hence, the missing reason in Step 8 is substitution of
.
Answer: C and E
Step-by-step explanation:
asymptotes are : x=4 and x=-1
Answer:
I believe 7 is the GTF (greatest common factor)
The answer to the question is
20/30. 24/30,. 21/30