20 - 15 = 5 sheep
809 * 29 = 23461 ==> 23500
Press the "2nd" button and the sin, cos, and tan buttons should be inverted.
We are given that 3% of the coal's weight is in sulfur.
\(3\%(3390) = \frac{3}{100}(3390) = \boxed{101.7}\) pounds.
While these numbers may have been spammed on a keyboard, it's certainly doable.
\(n + \frac{764}{5764} + 22456 + n - 6 + 111111111 =\boxed{ 2n + \frac{160111111102496}{1441}.}\)
32 = 2^5
45 = 3^2 * 5
32 and 45 have no factors in common, so 32/45 is already simplified.
\(\frac{3}{7} \div \frac{2}{3}=\frac{3}{7} \cdot \frac{3}{2} =\boxed{\frac{9}{14}}\)
223 is prime, so none of these numbers divide into it.
\(\frac{2x+4}{x^2+4x-5} = \frac{2-x}{x+5}\)
\((2x+4)(x+5) = (2-x)(x^2+4x-5)\)
\(2(x+2)(x+5) = -(x-2)(x+5)(x-1)\)
\(2(x+2) = -(x^2-3x+2)\)
\(2x+4 = -x^3+3x-2\)
\(x^2 - x + 6 = 0\)
\(\boxed{x = -3, 2}\)
You could always use the web2.0calc calculator to do it for you, but if you're interested:
sqrt(2) is about 1.41421356237309504880168872420969.
