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Mathematics 13 Online
OpenStudy (anonymous):

The average wind speed in another town is 23 km/h but the actual wind speed is within 4 km/h of the average. Write and solve an inequality to find the range of wind speed in this town.

OpenStudy (anonymous):

X=wind speed

OpenStudy (anonymous):

\[X=24\pm4\]

OpenStudy (anonymous):

because there is a range of 4 for the km/h you have to adjust for that.

OpenStudy (anonymous):

so then instead of an exact answer of x=24 plus or minus 4

OpenStudy (anonymous):

you must show that X<20<28

OpenStudy (anonymous):

sorry! mistype

OpenStudy (anonymous):

20<X<28***

OpenStudy (anonymous):

so this means that X is greater than 20, but less than twenty eight. and X is now allowed to be any of the 8 numbers between 20 and 28 because the variable exists of an average between the two numbers. in simple terms, you are giving it an area of error of give or take 4 km/h

OpenStudy (anonymous):

Did i help you at all or do you need a better explanation?

OpenStudy (anonymous):

That helped a lot thanks

OpenStudy (anonymous):

no problem :)

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