Let x be the width of the sidewalk and the area becomes:
A=LW and L=6+2x and W=4+2x now we have
A=(6+2x)(4+2x) and we are told that A=48ft^2
48=24+20x+4x^2
4x^2+20x-24=0
4(x^2+5x-6)=0
x^2+5x-6=0
x^2-x+6x-6=0
x(x-1)+6(x-1)=0
(x+6)(x-1)=0
So x=-6, 1, however since x is a measurement it must be positive thus
x=width=1 ft is the only possible solution.
Answer:
459 Miles
Step-by-step explanation:
es geométria es fácil pero rápido y tenía dash
Answer: 8.795 * 10^6 = 8,795,000
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8.795 * 10 = 87.95
8.795 * 10^2 = 879.5
8.795 * 10^3 = 8,795
8.795 * 10^4 = 87,950
8.795 * 10^5 = 879,500
8.795 * 10^6 = 8,795,000
