drainy0uandthefish
09.07.2019 •
Mathematics
Apedestrian bridge is 53 meters long. due to changes in temperature, the bridge may expand or contract by as much as 21 millimeters. write and solve an absolute-value equation to find the minimum and maximum lengths of the bridge.
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Ответ:
Given that a pedestrian bridge has length of 53 meters. and due to change in temperature, bridge may expand or contract by 21 millimeters =
Let x be the new length which is contracted or expanded due to temperature change.
So, change in length of bridge due to temperature may be x-53 ( for expansion) or 53-x (for contraction).
But given this change must be 0.021.
Absolute function for change in bridge length = |53-x|
Hence absolute value equation is |53-x| = 0.021
Which means 53-x=0.021 or 53-x = -0.021
x=53-0.021 or x= 53+0.021
x=52.979 m or 53.021 meters
Hence minimum and maximum length of the bridge are 52.979 meters and 53.021 meters.
Ответ:
1/8 converted as a decimal and rounded to the hundredths is 0.13
Step-by-step explanation:
1/8 as a decimal is 0.125
Rounded to the hundredths place is 0.13