My brother is 5 years older than I am. My sister is 3 years younger than I am.
1 answer:
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Let
x---------> <span>the width of the gravel path
we know that
72=(2x+6)*(2x+7)----> 72=4x</span>²+14x+12x+42-------> 4x²+26x-30=0
using a graph tool-----> to resolve the second order equation
see the attached figure
the solution is
x=1
the answer is
the width of the gravel path is 1 ft
x---------> <span>the width of the gravel path
we know that
72=(2x+6)*(2x+7)----> 72=4x</span>²+14x+12x+42-------> 4x²+26x-30=0
using a graph tool-----> to resolve the second order equation
see the attached figure
the solution is
x=1
the answer is
the width of the gravel path is 1 ft