Solve the equation.
+ 8 = 10
A. 10
B. 90
C. 92
D. 7
Answer: A
Mathematics
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Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 67.5°
A. - 
B. 
C. 
D. - 
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Decide whether or not the functions are inverses of each other.f(x) = 
, domain [-4, ?); g(x) = x2 + 4, domain (-?, ?)
A. Yes B. No
Mathematics
Solve using matrices. x - y + 4z = -152x + z = -3 x + 5y + z = 12
A. (-3, 3, 0) B. (0, 3, -3) C. (3, -3, 0) D. (-3, 0, 3)
Mathematics
Solve.2r + 4 = 16
A. r = 6 B. r = 4 C. r = 10 D. r = 14
Mathematics