6 1/4! explanation: 2 3/4 + 3 = 5 3/4 next, 5 3/4 + 2/4 = 6 1/4
Answer:
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The mirror has 5 sides. Its shape is a pentagon. Penta means 5.
Perimeter of a church window is 80 inches. If the window is square shaped, its length of each side is 20 inches.
80 inches / 4 sides = 20 inches.
X<4 represents "all numbers smaller than 4, including all negative numbers."
In interval notation, this comes out to (-infinity, 4).