\(\dfrac{\text{3 pounds}}{\text{0.90}}=\dfrac{\text{10 pounds}}{x}\\ \text{3x pounds} = \text{9 pounds}\\ 3x = 9\\ x = 3\)
10 pounds will cost $3.
My weight is about 100 pounds and it would cost me about $30. LOL
Diameter of the Earth = 12742 km.
Perimeter of the Earth = \(\pi \) x diameter = 12742\(\pi\)km.
LOL :P
:)
Btw I think it has already been a few days ago when I last logged into the forum?
I didn't leave the forum :)
Good question though.
\(\text{Let }x = 1991\\ \dfrac{1}{1991} + \dfrac{1992\times 1990}{1991} - 1992\\ = \dfrac{1}{x} + \dfrac{(x+1)(x-1)}{x}-(x+1)\\ =\dfrac{1}{x} + \dfrac{x^2 - 1}{x} - (x+1)\\ = \dfrac{x^2 +1 - 1}{x }-(x+1)\\ = \dfrac{x^2}{x} -(x+1)\\ = x - x - 1\\ = -1\)
Substitution is always brilliant :)
1 loaf of bread = 1/4 cup of oil.
5 loaf of bread = 5 x 1/4 cup of oil = 1 1/4 cup of oil.
There are still 5/8 cup of oil left
Therefore add them up: 1 1/4 + 5/8 = 1 2/8 + 5/8 = 1 7/8
Judy started with 1 and 7/8 cups of oil.
\(m(z+9) - m(z) ; m = z^2\\ = (z + 9)^2 - z^2\\ = z^2 + 18z + 81 - z^2\\ = 18z + 81\)
You mean the A 'flat' 9 sus4 chord? :)
I do know something about music :)
sqrt(pi) ~= 1.77245385090551602729.
78354962*776625 = 60852422363250 according to this calculator.
