Complete the identity.
= ?
A. sin2 
B. 
C. cos2 
D. 
Answer: B
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Provide an appropriate response.Simplify: |-8|
Fill in the blank(s) with the appropriate word(s).
Write the first five terms of the arithmetic sequence with the given first term a and common difference d.a = 4; d = 5
A. 4, 8, 12, 16, 20 B. 4, 9, 14, 19, 24 C. 9, 14, 19, 24, 29 D. 0, 4, 9, 14, 19
Establish the identity.
= 
What will be an ideal response?
In its study of growth, change, and stability, lifespan development takes what type of approach?
A. intuitive B. scientific C. social D. environmental