Find the exact value by using a sum or difference identity.cos 
A. 
B. - 
C. - 
(
- 1)
D. 
(
- 1)
Answer: A
Mathematics
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?Where do you not see examples of tessellations in the real world?
A. ?In an Escher painting. B. ?In a floor pattern in some building entrances. C. ?In the tile design in your shower. D. ?In all painters' works. E. ?None of the above.
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Find the second derivative of the function.p = 
A. 
= - 
- 
- 
B. 
= - 
- 
- 
C. 
= 
+ 
+ 
D. 
= 
+ 
+ 
Mathematics
Decide whether or not the ordered pair is a solution of the equation.x - y = 9; (3,2)
A. Yes B. No
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Find the number of subsets of the set.{14, 15, 16}
A. 6 B. 3 C. 8 D. 7
Mathematics