Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. - 
C. 
D. - 
Answer: B
Mathematics
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Determine whether function is one-to-one.{(12, -12), (-9, -1), (-15, 6)}
A. Yes B. No
Mathematics
Solve the problem.The width of a rectangle is 6 kilometers less than twice its length. If its area is 176 square kilometers, find the dimensions of the rectangle.
A. length = 8 km, width = 10 km
B. width = 11 km, length = 16 km
C. length = 3 km, width = 
km
D. length = 11 km, width = 16 km
Mathematics
Solve the proportion. 
(a) 11 (b) 1 (c) -11 (d) 2
Mathematics
Simplify.(5xy)2(4x6y8)2
A. 400x14y18 B. 400x10y12 C. 20x7y18 D. 20x14y18
Mathematics