Solve the equation.
= 
A. {-7}
B. {5}
C. {23}
D. {-23}
Answer: C
Mathematics
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Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y varies inversely with x. When x = 3, then y = 9.
A. k = 27; y = 
B. k = 27; y = 
C. k = 
; y = 
x
D. k = 
; y = 
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Solve the problem.If sin ? = - 
, and ? terminates in quadrant IV, then find sin 2?.
A. 
B. - 
C. - 
D. 
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Simplify the square root. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 
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Find the vector v having length |v| = 4, and direction ? = 225°.
 figure 1.png)
Mathematics