Find the radian measure of a central angle of the circle of radius r that intercepts the arc of length s. Round your answer to three decimal places.r = 13.8 inches, s = 20 inches
A. 0.69 radians
B. 1.449 radians
C. 276 radians
D. 4.553 radians
Answer: B
Mathematics
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Find the vertex, the focus, and the directrix of the parabola.y = -2x2 - 20x - 52 = 0
A. V: 
; F: 
; D: x = - 
B. V: 
; F: (-5, -4); D: x = 0
C. V: (-5, -2); F: 
; D: y = - 
D. V: 
; F: (-5, -10); D: x = -6
Mathematics
Find an equation of the plane that passes through the points P, Q, and R. : P(8,1,1), Q(5,2,0), R(0,0,0)
 figure 1.png)
Mathematics
Find the x- and y-intercepts of the graph of the given equation, if they exist. Then graph the equation.9y - 3x = -6
A. x: - 
; y: 2 
B. x: -2; y: - 
C. x: 2; y: - 
D. x: - 
; y: -2 
Mathematics
For what values of x does the series converge absolutely?
A. -10 ? x < -4 B. 0 < x ? -4 C. 0 < x < -4 D. -10 < x < -4
Mathematics