Solve the equation.
+ 
= - 
A. 
B. 
C. 
D. 
Answer: D
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
Solve the problem. Give the answer as a simplified radical expression.A rectangular coal bin has a length of 
feet and a width of 
feet. What is its perimeter?
A. 8
feet
B. 16
feet
C. 16
feet
D. 8
feet
Mathematics
Decide whether or not the function is continuous in the indicated x-interval.2 to 4
A. Not continuous B. Continuous
Mathematics
Solve the problem.John owns a hotdog stand. His profit is represented by the equation 
with P being profits and x the number of hotdogs sold. What is the most he can earn?
A. $150 B. $108 C. $87 D. $49
Mathematics