Use the quadratic formula to solve the equation. (All solutions are real numbers.)
= 
+ 
A. 
B. 
C. 
D. {-1}
Answer: B
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = cos 5t, y = sin 4t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Simplify. Express in terms of i.
A. ±5
B. -5i
C. -i
D. 5i
Mathematics
Evaluate the definite integral.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
State whether the given expression is one or more or none of the following: a real number, a rational number, or an irrational number.
A. None B. Real, irrational C. Real, rational
Mathematics