Absolute value of any number is always positive because it represent distance and distance will always positive.
To place chimney at least 30 feet , the distance along the width of the roof (x) will be x = 17.5 feet or x = 2.5 feet.
Since, The height of the roof is described by the function f(x)=−4/3|x−10| + 40
Since, minimum height is 30 feet.
So , substitute f(x)=30 in above expression.
30=−4/3|x−10| + 40
4/3|x−10| = 10
|x−10|=30/4
|x−10| = 7.5
Taking positive case,
x−10 = 7.5
x = 17.5 feet
Taking negative case,
x−10 = - 7.5
x = 10 - 7.5
x = 2.5 feet
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Answer:
factorisation
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Given
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Required
Solve and graph
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Remove absolute bracket
or 
Solve for p
or 
or 
Divide by -1
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<em>See attachment for plot</em>
Answer:
105 miles in 3 hours
Step-by-step explanation:
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