Step-by-step explanation:

Answer:
side of the mosaic = 7 inches
Step-by-step explanation:
Diego has 49 square inch tiles. He wants to use to make a square mosaic.
Area of the tile = 49 square inches
We know , area of the square = s^2
where 's' is the side of the square

Plug in 49 for area and solve for 's'

Take square root on both sides
s= 7
side of the square = 7 inches
Answer:
-6r + .5
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Perimeter = 72m
length = x
width = x - 4
P = 2l + 2w
72 = 2x + 2(x - 4)
72 = 2x + 2x - 8
72 = 4x - 8
72 + 8 = 4x
80 = 4x
80/4 = x
x = 20
Therefore, the length = 20m and width = 16m
Answer:
D
Step-by-step explanation: