Use a sum or difference identity to find the exact value.sin 15° cos 105° + cos 15° sin 105°
A. - 
B. 
C. - 
D. 
Answer: D
Mathematics
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Multiply.
A. x2 - 
x - 
B. x2 + 
C. x2 + 
x - 
D. x2 - 
Mathematics
Simplify the expression.
A. -49 B. 49 C. 7 D. -7
Mathematics
Use substitution to factor the polynomial.(6y + 9)2 + 2(6y + 9) - 8
A. (6y - 13)(6y + 7) B. (6y - 13)(6y + 11) C. (6y + 13)(6y + 11) D. (6y + 13)(6y + 7)
Mathematics
Solve the problem.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 9 lb when the masses are 2 ft apart, what is the attraction when the masses are 6 ft apart?
A. 3 lb B. 2 lb C. 1 lb D. 4 lb
Mathematics