calculus
just set ds/dt=0 That is, 3t^2 - 10t + 3 = 0 ...
precalculus PLEASE HELP
well, you have the numbers and the formula: 120 sin(120πt) = 20I
LIMITS
cotx - 1/x = (x-tanx)/(x tanx) now apply L'Hospital's Rule, so the limit is also (1-sec^2 x)/(tanx - xsec^2 x) and again -2sec^2 x tanx / (sec^2 x - 2sec^2 x tanx) = -2sec^2x tanx / (sec^2x(1-2tanx)) = 0/1 so the limit is 0
math
the table looks like in out 3 9 4 16 ? 25 10 100 do you recognize perfect squares? out = in x in
Pre Calculas
x+y <= 60 xy = 120 so, x + 120/x <= 60 x^2 + 120 <= 60x x^2 - 60x + 120 <= 0 The two roots of this equation are x = [60±√(3600-480)]/2 = 30±2√195 since this is a parabola which open up, it is negative between the roots. so, x ∊ [30-2...
algebra
4r-8 = 12 4r = 20 r = 5
geometry
lwh = 250 l(2w)(3h) = 6lwh = 6(250) = 1500
math
add up the distances traveled: 65(14) + 75x = 1960 Hmmm. x=14, indicating they left at the same time. ??
Math
since p = 2(l+w) and there are 3 frames, he needs a total of 3(2)(7 7/8 + 5 3/4) 6(63/8 + 23/4) 6(63/8 + 46/8) 6(109/8) 3(109/4) 327/4 81 3/4
Math
Your Z table makes it clear that the mean is right in the middle. That is 50% is greater, 50% is less. Take a visit to http://davidmlane.com/hyperstat/z_table.html and you can play around with these ideas.
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