Math
r = 0 I assume at t = 0 r (t) = 0 + 10 t r(6) = 60 cm 60^2 = 3600 x^2 + y^2 = 3600 cm^2
calculus optimization problem
L + 2 W = 460 so L = (460 - 2 W) L * W = A A = (460-2W)W = 460 W - 2 W^2 DA/DW = 460 - 4 W ZERO FOR MAX OR MIN 4 W = 460 W = 115 L = 460 - 2*115 = 230
math
2(L + W ) = 50 L = W+5 W + 5 + W = 25 2 W = 20 W = 10 L = 15 a = 150
Math
32 + 44 = 76 = total 6th to 7th = 32/44 small 6th/total = 32 / 76 smaller total / 6th = 76 / 32 really big total/ 7th = 76 / 44 big but a little smaller (c)
calculus
y = a x^4 + b x^2 + c if symmetric about x = 0 when x = 0, y = 4 so c = 4 and y = a x^4 + b x^2 + 4 when x = 1, y = 6 6 = a + b + 4 so a+b = 2 b = (2-a) dy/dx = 4 a x^3 + 2 b x = 0 when x = 1 or - 1 0 = 4 a + 2 b 0 = 4 a + 2(2-a) 0 = 4 a + 4 -2a 2 a = -4 a = - 2 b = 4 y = -2 x...
physics
m g = 400 m = 400/g m g + m a = 405 (400/g)(g+a) = 405 400 (g+a) = 405 g 400 a = 5 g a = g/80 = .123 m/s^2
Sorry
I misread it, thought it said ODD numbers
Math
n-4 + n-2 + n + n+2 + n+4 = 2005 5 n = 2005 n = 401 so the list 397 399 401 403 405 so 2*3 + 3*4 + 2*9 + 25 = 61
college algebra
well, when is t^2 -35 t + 300 = 0 plain old quadratic t = [ 35 + / - sqrt (1225 - 1200) ]/2 = [ 35 +/- 5 ]/2 = 15 or 20 your profit is negative between 15 units and 20 units I suspect a typo in your problem. It does not make sense to have a profit of 300 for zero units sold.
I would like to understand my calc homework:/
Do not panic. Plug and chug.
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