Given:
The piecewise function is:
To find:
The values of 
.
Solution:
In the given piecewise function,
for 
and 
for 
.
Putting 
in , we get
Putting 
in , we get
Putting 
in , we get
The required values are 
.
Therefore, the correct option is D.
Hmm, I'd say the answer is,
A) The equation has x = 4 as its only solution
Answer:
C ≈ 95.7°
Step-by-step explanation:
Law of cosines:
c² = a² + b² − 2ab cos C
where a, b, and c are the sides of the triangle, and C is the angle opposite of side c.
9² = 5² + 7² − 2(5)(7) cos C
81 = 25 + 49 − 70 cos C
81 = 25 + 49 − 70 cos C
7 = -70 cos C
-1/10 = cos C
C ≈ 95.7°
Answer:
20 but I am not sure.....
