Simplify the expression by combining like radicals where possible.-9
- 7
A. -16
B. 63
C. -2
D. -16
Answer: D
Mathematics
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and 
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Fill in the blank(s) with the appropriate word(s).
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Solve the system by elimination.5 x - y = 242x + y = 11
A. No solution B. (5, 1) C. (1, 5) D. (5, 2)
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Use reference angles to find the exact value of the expression. Do not use a calculator.cot 
A. 
B. 
C. - 
D. -
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