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27 March, 21:22

An inch in equal to about 2.54 centimeters. Write an expression which estimates the number of centimeters in x inches. Then estimate the number of centimeters in 12inches.

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  1. 27 March, 21:51
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    1 inch = 2.54 centimeters. this is a ratio.

    expression: x inches * _2.54 centimeters_ = # of centimeters in x inches

    1 inch

    the reason the 1 inch is in the denominator is to cancel out the inches for x so that you are only left with centimeters.

    estimate: 12 inch * _2.54 centimeters_ = 30.48 centimeters.

    1 inch
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