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Juliianatafur22
30.07.2019 •
Mathematics
Acar turns a corner at 5 mph. if its speed is increased to 15 mph, its centripetal acceleration is:
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Ответ:
The fraction of the area of ACIG represented by the shaped region is 7/18
Step-by-step explanation:
see the attached figure to better understand the problem
step 1
In the square ABED find the length side of the square
we know that
AB=BE=ED=AD
The area of s square is
where b is the length side of the square
we have
substitute
therefore
step 2
Find the area of ACIG
The area of rectangle ACIG is equal to
substitute the given values
step 3
Find the area of shaded rectangle DEHG
The area of rectangle DEHG is equal to
we have![DE=7\ units](/tpl/images/0229/1105/06239.png)
substitute![A=(7)(2)=14\ units^2](/tpl/images/0229/1105/1b6ef.png)
step 4
Find the area of shaded rectangle BCFE
The area of rectangle BCFE is equal to
we have
substitute
step 5
sum the shaded areas
step 6
Divide the area of of the shaded region by the area of ACIG
Simplify
Divide by 5 both numerator and denominator
therefore
The fraction of the area of ACIG represented by the shaped region is 7/18