a1865 = 276.5 seconds and a1954 = 239.4 seconds. Assuming the speeds decrease from year to year in an arithmetic pattern (which they actually have done, more or less), use the information given above to find d.
a1865 = 276.5 seconds and a1954 = 239.4 seconds. Assuming the speeds decrease from year to year in an arithmetic pattern (which they actually have done, more or less), use the information given above to find d.
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter12: Algebra Of Matrices
Section12.CM: Cumulative Review Problem Set
Problem 106CM
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According to the 1998 Information Please Almanac, the official speed record for running one mile was held by Richard Webster of England in 1865, with a time of 4 minutes 36.5 seconds.
Roger Bannister, also of England, was the first to run a mile in less than four minutes, clocking a time of 3 minutes 59.4 seconds in 1954.
There are (of course) 60 seconds in each minute. Therefore, we could convert both times into seconds, writing them as follows:
a1865 = 276.5 seconds and a1954 = 239.4 seconds.
Assuming the speeds decrease from year to year in an arithmetic pattern (which they actually have done, more or less), use the information given above to find d.
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