Aformal description of the problems: the input is a set x of n points: x = {x1 < x2 < . . < xn}, where each xi (1 ≤ i ≤ n) represents a house. we need to select a subset y ⊆ x such that: (1) for every point xi ∈ x, there is a point xj ∈ y with |xi − xj | ≤ 5, and (2) the 2 size of y is minimum, subject to condition (1). describe a polynomial time greedy algorithm for solving this problem. you need to prove the correctness of the algorithm.

step-by-step explanation:

when the line is solid:

when the line is dashed:

this > inequality sign means:

this < inequality sign means:

this > inequality sign means:

this < inequality sign means:

about the problem:

srry i'm not done ! i'll

what

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi