XxmathguyxX

this question was already answered on a web2.0calc post. enter your question on google and you will find it

We know the circumference of the circle = the perimeter of the square which is  \(\sqrt{144} =12\times4=48\) (you get 12 and 12 x 4 =48)

\(2\pi r=48\)

\(\pi r=24\)

\(r=\frac{24}{\pi}\)

\(\pi\times\frac{24}{\pi}^2=\frac{576}{\pi}\)

\(576\pi\) is about \(183\)

so 183.

\(2x(x + 10) = -50\)

\(2x^2+20x=-50\)

\(2x^2+20x+50=-50+50\)

\(2x^2+20x+50=0\)

\(x_{1,\:2}=\frac{-20\pm \sqrt{20^2-4\cdot \:2\cdot \:50}}{2\cdot \:2}\)

\(x_{1,\:2}=\frac{-20\pm \sqrt{0}}{2\cdot \:2}\)

\(x=\frac{-20}{2\cdot \:2}\)

\(x=-5\)

so the value is -5 

so -5!

hope this helps!,

      XxmathguyxX

an example.

if x is 2,

\(7x-2=12\) so 13 for the large one

\(3x+5=11\) so 9 for the small one

\(13-9=4\)

\(2a+b=4\)

either a is 2 and b is 0 or a is 1 and b is 2, so i guess 2 or 3!

Hope this helps!

      XxmathguyxX

uh..... what is 32.532.5? i am assuming you mean 32.5 and 4.23.....

the answer is 13.06(after rounding)

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i guess 15?

\(2+3(4x+2)=3x-4\)

\(12x+8=3x-4\)

\(12x+8-8=3x-4-8\)

\(12x=3x-12\)

\(12x-3x=3x-12-3x\)

\(9x=-12\)

\(\frac{9x}{9}=\frac{-12}{9}\)

\(x=-\frac{4}{3}\)