A construction worker bought 21 1/4 pounds of nails. When those nails were all used , he bought 1 1/2 times as many nails he had bought the first time. How many pounds of nails did he buy the second time

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step-by-step explanation:

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answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.

to complete this square you have to rotate about the origin 270 degrees clockwise.