if the squares are of size x, then the volume is v = x(20-2x)^2 = 4x(10-x)^2 Without benefit of calculus, you still know the general shape of the curve. Since we want integer values, just start checking. x v 1 324 2 512 3 588 4 576 Now v is decreasing, so keeping all values in...
I guess 10/1
ax^2+bx+c=y 0a+0b+c=1.39 324a+18b+c=1.5 2025a+45b+c=0 a=-.00137 b=0.0308 c=1.39 y = -.00137x^2 + 0.031x + 1.39 max height on the parabola is at x = -b/2a, so at x = .031/.00274 = 11.31 y = 1.565
Trig-Weird Geometry Problem
You will find a nice discussion at http://answers.tutorvista.com/1101359/trigonometry-application-rule.html showing that if A+B+C=180, tan(A-B)+tan(B-C)+tan(C-A) = tan(A-B)*tan(B-C)*tan(C-A) Given that, one of the factors must be zero. So, A=B or B=C or A=C. That is, the trian...
first year chem
Well, since P weighs 31g and the isotopes of chlorine weigh 35 and 37 So, one mole of PCl3 is either 31+3*37=142 or 31+3*35 = 136
I was, but you walked away...
sin(2π/3) = sin(π-π/3) = sinπ cosπ/3 - cosπ sinπ/3 = 0+sinπ/3 1/0 is undefined. cosx = ±√3/2 cosx > 0 in QI,QIV cosx < 0 in QII,QIII
the expression is undefined when the denominator is zero, because division by zero is undefined. 5m^2+m = m(5m+1), so it is zero for m = 0 or -1/5 even ignoring the typo in the numerator.
If there are x named Main, then x + x+2105 = 12485. Now just solve for x.
|T-346| <= 2 344 <= T <= 348 so, keep heating.