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EKM
Questions (16)
A fair coin is tossed three times and the events A, B, and C are defined as follows:
A:{ At least one head is observed } B:{ At
0 answers
913 views
A foreman for an injection-molding firm admits that on 46% of his shifts, he forgets to shut off the injection machine on his
1 answer
2,369 views
Given that P(A)=0.81 and P(B|A)=0.23, find the joint probability P(A and B):
1 answer
817 views
A box contains 19 yellow, 29 green and 37 red jelly beans.
If 14 jelly beans are selected at random, what is the probability that
3 answers
1,326 views
Use spherical coordinates to calculate the triple integral of f(x, y, z)=y over the region x^2+y^2+z^2≤8, x, y, z ≤ 0.
2 answers
1,478 views
Convert the following point from rectangular to spherical coordinates:
(1, −√3, 2√3). I found the answer to be (4, -pi/3,
1 answer
756 views
Find the minimum and maximum of f(x,y,z)=x^2+y^2+z^2 subject to two constraints, x+2y+z=8 and x−y=5.
I found that x = 41/11, y
0 answers
846 views
Find the point (x0, y0) on the line 12x+12y=2 that is closest to the origin.
I set ∇f to ∇g to get: <2x,2y> = λ<12,12> I
1 answer
786 views
Find the point on the plane z = 8x + 10y + 1 closest to the point P=(1, 0, 0).
1 answer
563 views
Find the point on the graph of z = 3x^2 − y^2 at which vector n = ⟨12, 4, −1⟩ is normal to the tangent plane.
So far I've
0 answers
636 views
Find an arc length parametrization of r(t) = ⟨e^(t)sint, e^(t)cost, 8e^(t)⟩
0 answers
537 views
Find a path that traces the circle in the plane y = −2 with radius r = 4 and center (−3,−2,−2) with constant speed 28.
0 answers
770 views
Find an arc length parametrization of the circle in the plane z = 16 with radius 5 and center (5, 5, 16).
0 answers
511 views
Let r(t) = < sin(6t), cos(6t), sin(6t)cos(12t) >.
Find the point where r(t) intersects the xy-plane on the interval π/6 < t <
1 answer
2,403 views
Approximate the arc length of the curve y=(1/4)x^4 over the interval [1,2] using the Trapezoidal Rule T8.
I was never taught how
2 answers
1,129 views
Find the volume of the solid whose base is the region enclosed by y=x^2 and y=2, and the cross sections perpendicular to the
1 answer
6,099 views
Answers (3)
Yeah, I just realized my mistake, it was 66C9 for the remainder of the selections, not 66C5. Thank you though
I got 19C5 * 66C5 / 85C14 = 0.0000273503, but my online hw is saying this answer's incorrect. Am I missing something?
This is a WebWork problem for my Calculus 2 class and all the answers I got from online calculators weren't considered correct, which is why I'm asking for some help on here.
