physics
seems pretty straightforward to me F = ma 200 = 1000a a = 0.2 v = at 60*0.45 = 0.2t t = 135 sec
elgebra
2/3a + 15/3a 17/3a
alg
√(3x^2) = -18 3x^2 = 324 x^2 = 108 x = ±√108 = ±6√3
Math is this right?
why the "+"? x > -15 because it stayed above, meaning greater than.
TRIGONOMETRY
as usual, r^2 = x^2+y^2 r%2 = 9 r=3 y/r = sinθ 3/3 = sinθ θ = π/2 so, we get (3,π/2)
math
yes
TRIGONOMETRY
r=6 is just a circle of radius 6 x^2+y^2 = r^2 This is also a circle, but shifted along the x-axis: r = 2cosθ r^2 = 2rcosθ x^2+y^2 = 2x x^2-2x+1 + y^2 = 1 (x-1)^2 + y^2 = 1
TRIGONOMETRY
both are correct
Math
when x is odd, g(x) = 0 when x is even, g(x) = 2 f(x) = ±1/2 so, the range of h(x) is {-1,0,1} ...
Math 222
not sure what you mean by "solve" a function. If you want to graph it, it's just an upside-down V shape with the vertex at (0,0).
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