Add or subtract as indicated. You will need to simplify terms to identify like radicals.
- 
A. 12
B. -6
C. -30
D. -6
Answer: B
Mathematics
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Identify the equation as either an identity or not.sin2x - sin2y = cos2y - cos2x
A. Identity B. Not an identity
Mathematics
Simplify the expression.
A. 14
B. 
C. 
D. 5
Mathematics
Assume that two marbles are drawn without replacement from a box with 1 blue, 3 white, 2 green, and 2 red marbles. Find the probability of the indicated result.Both marbles are green.
A. 
B. 
C. 
D. 
Mathematics
Solve using the elimination method. 
x - 
y = 3
x + 
y = 3
A. 
B. 
C. 
D. (3, 3)
Mathematics