A rectangular stained glass window is 2 feet by 4 feet. A clear glass border is constructed around the stained glass window
By
putra
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Mathematics
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A rectangular stained glass window is 2 feet by 4 feet. A clear glass border is constructed around the stained glass window
The width of the border is equal and was made out of 7 square feet of clear glass. What is the width of the border?
A. 0.5ft
B. 1.5 ft
C. 2.5 ft
D. 3.5 ft
Answer:
S=2(4x+2x)+4x^2=
=4x^2+12x
4x^2+12x=7
4x^2+12x-7=0
D=12^2-4×4×(-7)=256
x1=(-12-16)/(2×4)=-3,5 (impossible)
x2=(-12+16)/(2×4)=0.5ft
the answer is A. 0.5ft
A. 0.5ft
B. 1.5 ft
C. 2.5 ft
D. 3.5 ft
S=2(4x+2x)+4x^2=
=4x^2+12x
4x^2+12x=7
4x^2+12x-7=0
D=12^2-4×4×(-7)=256
x1=(-12-16)/(2×4)=-3,5 (impossible)
x2=(-12+16)/(2×4)=0.5ft
the answer is A. 0.5ft
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You are currently reading the article about lessons A rectangular stained glass window is 2 feet by 4 feet. A clear glass border is constructed around the stained glass window and this lesson url permalink of the article was https://choosequestion.blogspot.com/2016/08/a-rectangular-stained-glass-window-is-2.html Hopefully this question and answer article can give good answers, good learning.