Solve the quadratic equation by completing the square.x2 - 12x = -27
A. 24, 3
B. ±
C. 9, 3
D. -9, -3
Answer: C
Mathematics
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = 
between x = 2 and x = 9 using the "midpoint rule" with two rectangles of equal width.
A. 
B. 
C. 
D. 
Mathematics
Decide whether or not the given equation is an identity.
= cos ? csc2 ?
A. Yes B. No
Mathematics
Solve for x and y: 2x - 4y = 3; 2x + 3y = 5
a.
b.
c.
d.
e.
Mathematics
Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.f(x) = sin3 x
A. 
sin x + 
sin 2x - 
sin 3x
B. 
sin x + 
sin 2x
C. 
sin x - 
sin 3x
D. 
sin x
Mathematics