Decide whether the expression is or is not an identity.sin2 
= 
A. Identity
B. Not an identity
Answer: B
Mathematics
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Find the sum or difference, and write in lowest terms, if necessary.- 
+ 
A. 
B. - 
C. 
D. - 
Mathematics
Solve the system. Indicate all corner points and shade the solution set.3x - 2y ? -6 x - 1 ? 0
A. 
B. 
C. 
D. 
Mathematics
Find all numbers that satisfy the following.An arrow is fired straight up from the ground with an initial velocity of 
per second. Its height, 
in feet at any time t is given by the function 
Find the interval of time for which the height of the arrow is greater than 
A. between 
and 
sec
B. before 
sec or after 
sec
C. before 
sec
D. after 
sec
Mathematics
Solve for the specified variable. Assume that all other variables are nonzero.(b - 11)y2 + 3y + 4z = 0; for y
A. y = 
B. y = 
C. y = 
D. y = 
Mathematics