Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant II, and cos ? = 
, ? lies in quadrant I
Find sin (? - ?).
A. 
B. 
C. - 
D. 
Mathematics
Use the graph of a quadratic function to find the solution set of the equation or inequality. For a solution set that involves an interval, use interval notation.-x2 + 8x - 16 > 0
A. (-?, ?) B. x = 4 C. ? D. (-?, 4) ? (4, ?)
Mathematics
Factor the GCF out of the given expression.5x2 + 15x
A. 5x(x + 15) B. x(5x + 15) C. 5x2(x + 3) D. 5x(x + 3)
Mathematics
State whether the equation is a conditional equation, an inconsistent equation, or an identity.(y - 6) - (y + 5) = 3y
A. Identity B. Conditional equation C. Inconsistent equation
Mathematics