Complete the identity.cos (x - 
) = ?
A. cos x
B. sin x
C. -sin x
D. -cos x
Answer: B
Mathematics
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Replace the question mark with inequality symbol < or >.44 ? 38
A. > B. <
Mathematics
Multiply.(2a - 7b)(5a + 10b)
A. 10a2 - 15ab - 70b2 B. 10a2 - 15ab - 15b2 C. 10a2 + 20ab - 70b2 D. 10a2 - 35ab - 70b2
Mathematics
Write a fraction and a percent for the shaded part of the figure.
A. 
or 80%
B. 
or 40%
C. 
or 20%
D. 1 or 100%
Mathematics
Solve.6.2 = 24 - x
A. 17.8 B. 29.7 C. 17.3 D. 30.2
Mathematics