Solve by the substitution method.
= 59x = 10 + 9y
A. 
B. 
C. {(x, y)|
= 5}
D. ?
Answer: B
Mathematics
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C. 
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Use the product-to-sum or sum-to-product identities to find an identity for the given expression.8 sin 6? cos 13?
A. -4(sin 19? + sin 7?) B. 4(sin 19? - sin 7?) C. 4(cos 19? + sin 7?) D. 4(sin 7? - cos 7?)
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Use the given figure to solve the problem.Find the bearing from O to D. 
A. N 147° E B. N 121° W C. S 59° E D. S 59° W
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