A painting in an art gallery has height h and is hung so that lower edge is a distance d above the eye of an observer (as in the figure). How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand so as to maximize the angle 
subtended at his eye by the painting?)
e. 
Mathematics
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Find the center and radius of the circle.x2 + (y + 5)2 = 36
A. (-5, 0); 6 B. (0, -5); 36 C. (0, 5); 6 D. (0, -5); 6
Mathematics
Factor completely. If unfactorable, indicate that the polynomial is prime.5x8 - 80x6
A. 5x6(x + 4)(x - 4) B. 5x6(x - 4)2 C. 5x(x + 4)(x - 4) D. 5x6(x + 4)2
Mathematics
Determine whether the formula determines y as a function of x.y = 9x + 1
A. Yes B. No
Mathematics
Use the given information to find the equation of the circle.Center: (2, -8); radius: 
A. (x - 2)2 + (y + 8)2 = 13 B. (x + 8)2 + (y - 2)2 = 169 C. (x - 8)2 + (y + 2)2 = 169 D. (x + 2)2 + (y - 8)2 = 13
Mathematics