Answers by visitors named: Kassen

7!=1*2*3*4*5*6*7=... (combinatoric)

x=width, y=length => x-1=y*1/4; 2x+2y=62; y=4x-4 => 2x+8x-8=62 => 10x=70 => x=7 (width) => y (length) = (62-14)/2 =24; let's check it: 7-1=24/4 <=> 6=6

3 pounds - x potatoes n pounds (we don't know) - 3.5*x potatoes n=3.5x*3/x=3.5*3=10.5

x=2y; x+y=180 => y+2y=180 => y=60 => x (angel) equals to 120;

according to the formula H=Vo*t-(gt^2)/2; we can see that mass doesn't play any role here, so we can fint out our max. heights: H2=2v*t2-(gt2^2)/2, and H1=v*t1-(gt1^2)/2; Also t=v0/g => t1=v/g; t2=2v/g => H2=4v^2/g - 2v^2/g; H1=v^2/g-v^2/2g => H2=v^2(4/g-2/g); H1=v^2(1/g-1/2g) => H2/H1=4 => H2=4*H1. (I suggest to check my solution, mb I have mistakes)

if resistors are parallel, then equivalent resistance R=1/(1/R1 + 1/R2 + 1/R3); all R are the same => R = R/3 => R/R1 = (R/3)/R <=> 1/3

A=F*h => h=F*A => h=A/mg <=> h=350/70= 5 m.