Simplify the expression.x0
A. -1
B. x
C. 1
D. 0
Answer: C
Mathematics
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Find the derivative of the function.f(t) = (6 - t)(6 + t3)-1
A. f '(t) = 
B. f '(t) = 
C. f '(t) = 
D. f '(t) = 
Mathematics
Find an equation for the ellipse. Graph the equation.Foci at (4, 7) and (4, 1); length of major axis is 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Without using a calculator, give the exact trigonometric function value with rational denominator.sin 30°
A. 
B. 
C. 
D. 
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find cos ?, given that sin ? = - 
and ? is in quadrant III.
A. - 
B. 
C. - 
D. - 
Mathematics