Answer:
70 degrees
Step-by-step explanation:
complementary angles ad up to 90 degrees
20+x=90
90-20=x
x=70
9. Obtuse triangle
10. 2736(i think)
I hope this helped
The equation of Q(n) is 
<h3>How to determine the formula of Q(n)?</h3>
The functions are given as:


From the question, we understand that:
d = P(n)
This means that:
d = 88n + 23
Substitute d = 88n + 23 in R(d)

Also, from the question
Q(n) = R(n)
So, we have:

Hence, the equation of Q(n) is 
Read more about composite functions at:
brainly.com/question/10687170
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Answer: 67 degrees
Step-by-step explanation:
Answer:
Protraction and retraction are the movements of the mandibule. <em>Protraction is when the lower mandibule is pushed forward and retraction is when the lower jaw is pulled backward. </em>You can see in the image I added the example of these movements.
I hope you find this information useful and interesting! Good luck!