a rectangular corn hole area at the recreation center has a width of 5 feet and a length of 10 feet. if a uniform amount is adde d to each side, the area is increased to 84 square feet. what is the amount added to each side
2 answers:
Answer:
the answer is add 2 feet on each side!
Step-by-step explanation:
Let x-------------> amount added <span>to each side </span>A-------------> area increased----------> 84 ft² we know that A=(10+x)*(5+x)=84-----------> 10*5+10*x+5*x+x² 50+15x+x²=84----------> x²+15x-34=0 <span>solving the second order equation </span>x1=-17 x2=2 the answer is x=2 ft
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