jdh3010

I think you mean 'hypotenuse' not 'hypotermuse'.

The value of a hypotenuse can be stated by the Pythagorean theorem.

$${\sqrt{{{\mathtt{a}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{b}}}^{{\mathtt{2}}}}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

With your question, a system of equations can be made.

If (Width)=x (Length)=y

2(x+y)=18

xy=20

→x=4,y=5 or x=5, y=4

400 pounds can be changed to 0.181436948 tons

0.181436948 tons=60853258/335396173 tons

The millionth digit of pi is 1.

5/x=x+13/6

→5=x^2+13x/6

subtract 5 to both sides

x^2+13x/6-5=0

x=$${\mathtt{\,-\,}}{\frac{{\mathtt{13}}}{{\mathtt{12}}}}{\mathtt{\,-\,}}{\frac{{\sqrt{{\mathtt{889}}}}}{{\mathtt{12}}}}$$ or $${\frac{{\sqrt{{\mathtt{889}}}}}{{\mathtt{12}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{13}}}{{\mathtt{12}}}}$$

0.3020833333=94400961/312499733

Assuming that you want to simplify 3c-2cd-8c+7d, I believe the answer is -5c-2cd+7d

I've made a mistake.

Sorry, and thanks for correcting my error!!!

if you add 2 to 200, you get 20009.

Multiply 4, and you will get 80036

The answer was actually 6 or -6

(2+i)x^2+(a-i)x+4-2i=0

→(2x^2+ax+4)+(x^2-x-2)i=0

x=2 or -1

substitute 2 in 2x^2+ax+4=0

8+2a+4=0, a=-6

substitue -1 in 2x^2+ax+4=0

2-a+4=0, a=6

So a is 6 or -6