Add or subtract as indicated.-5 + 8 - 7
A. 10
B. 4
C. -4
D. -6
Answer: C
Mathematics
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Determine if the equation is an identity.sin(x + y) - sin(x - y) = -2 cos x sin y
A. Not an identity B. Identity
Mathematics
Multiply the polynomials and simplify by combining like terms.(2x2 + 5x + 5)(x2 - 5x - 4)
A. 2x4 - 5x3 - 28x2 - 45x - 20 B. 2x4 - 10x3 - 28x2 - 45x - 20 C. 2x4 - 10x3 - 33x2 - 45x - 20 D. 2x4 - 5x3 - 33x2 - 45x - 20
Mathematics
Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-6, ?)
A. x > -6
B. x > -6
C. x ? -6
D. x ? -6
Mathematics
Perform the indicated operations.
? 
A. 
B. - 
C. 
D. 
Mathematics