A photo is printed on an 11-inch by 13-inch piece of paper. The photo covers 80 square inches and has a uniform border. What is
the width of the border?
2 answers:
Let
w--------> <span>width of the border
we know that
(11-2w)*(13-2w)=80--------> 11*13-22w-26w+4w</span>²=80
143-48w+4w²-80=0
4w²-48w +63=0
using a graph tool------> to resolve the second order equation
see the attached figure
the solution are
w1=1.5
w2-10.5--------> is not solution
the answer is
the width of the border is w=1.5 in
w--------> <span>width of the border
we know that
(11-2w)*(13-2w)=80--------> 11*13-22w-26w+4w</span>²=80
143-48w+4w²-80=0
4w²-48w +63=0
using a graph tool------> to resolve the second order equation
see the attached figure
the solution are
w1=1.5
w2-10.5--------> is not solution
the answer is
the width of the border is w=1.5 in
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Answer:
The answer to your question is 25 ft
Step-by-step explanation:
Data
height = 20 ft
leg = 15 ft
length of the line = ?
To solve this problem use the Pythagorean theorem.
Height = short leg = b
leg = long leg = a
length of the line = hypotenuse = c
- Substitution
c² = (20)² + (15)²
-Simplification
c² = 400 + 225
c² = 625
-Result
c =
c = 25 ft