Approximate the area of the circle using 3.14 for ?.
A. 50.24 ft.2
B. 24.12 ft.2
C. 12.56 ft.2
D. 25.12 ft.2
Answer: C
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Provide an appropriate response.The standard normal probability density function is defined by f(x) = 
e-x2/2. (a) Show that 
dx = 
.(b) Use the result in part (a) to show that the standard normal probability density function has mean 0.
What will be an ideal response?
Solve the equation in the complex number system.x2 + 6x + 25 = 0
A. {-3 + 4i} B. {-3 - 16i, -3 + 16i} C. {1, -7} D. {-3 + 4i, -3 - 4i}
?Use a graphing utility to approximate all the real zeros of the function 
by Newton's Method.
?
A. ?-1.751, 2.028, 8.61 B. ?-1.151, 2.97, 9.707 C. ?-1.071, -1.391, -1.951 D. ?-1.231, 2.028, 9.736 E. ?-0.951, 2.028, 9.736
Graph the hyperbola.25(y - 3)2 - 16(x - 1)2 = 400
A. 
B. 
C. 
D. 