## Andy C.'s Resources

100% - 36% = 64%

M = 5*x  where M is the minutes and x is the # of questions

Once again   (246-6)/5 = 240/5 = 48

27/31 = 87.09667...%

boat-pulley form a right triangle with legs 1 and x  where x is the distance from the boat to dock.   The hypotenuse h(x) = sqrt(x^2+1)   dH/dx = 2x/ ( x^2+1)^(1/2)     1 = (2*6)/(6^2+1)^(1/2) dx/dt   1 = [(12)/sqrt(37)]...

S(r) = Surface Area = 4 * pi*r^2   S(d) = 4*pi*(D/2)^2 = 4*pi*D^2/4 = pi*D^2   dS/dD = 2*pi*D  * dD/dt   -10 = 2*pi* 11 * dD/dt   -10/(22*pi) = dD/dt   -5/(11*pi) = dD/dt

2x + 2*y*y' = 0   x+y*y' = 0 <--- 1st derivative     1 + y*y''+ y'*y' = 0  <--- 2nd derivative   y*y''' + y'*y'' + y*y'' + y'*y'' = 0     y*y''' + (2*y' + y)*y'' = 0   y*y'''...

16   the standard deviation is the square root of the variance

------------------------------------------ 54

20 = (2r+5)*t   8 = r * t   20/(2r+5) = 8/r   20r = 8(2r+5) 20r = 16r + 40   4r = 40   r=10     Bike: 8 mi = 10 mph*t              4/5 = t  ...

\$9/2 = \$4.50 per pound      \$9/2 = \$27/x    9x = 2*27 9x = 54   x=6   She can buy 6 pounds of chicken

A(x) = w(37-w)   Please post the problem once

0.2X > 30    2X > 300      X>150

x + x+2  + x+4 = 105   3x + 6 = 105   3x = 99   x=33   33, 35, and 37

P = 2L + 2W (P-2w) = 2L (P-2w)/2 = L     A = Lw      = w*(P-2w)/2      = w*(74 - 2w)/2     = w(37 - w)