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Not sure about the first one,
The second one is 1/9.
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
Answer:
12.045 is already in base 10, since it can'be binary or hexadecimal,
it's a denary(decimal) number, and decimal numbers are base 10
