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alina1380 [7]
2 years ago
11

A school class went on a field trip to see a magician perform there were 17 females 20 males in the class the magicians randomly

selected a volunteer from the audience in which had 52 females and 68 males given that the randomly selected audience member is a student from the class which equation can be used to find the probability p that the perdimos also a female?please help does anyone know the answer
Mathematics
2 answers:
8090 [49]2 years ago
3 0

Answer:

P(A) = 37/100, P(A) = 37%

Step-by-step explanation:

Probability of an event = \frac{Number of favorable outcomes}{Total number of outcomes}

stira [4]2 years ago
3 0

Answer:

P=(17/20)/(52/68)

Step-by-step explanation:

I think that's the answer, I don't know for sure

Obviously, it is not (17/120)/(37/120) cause 37 are the males but its asking for the probability for the females

and it wouldn't be any of the multiplying equations cause we need the chances to grow not decrease

I know you guys will find a way to prove me wrong, but as I said before its just a guess

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V = 1/6 cubic units

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V = \int\limits^b_a {S(x)} \, dx          (1)

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From the figure we have that S is the area of a triangle that has base Z and height Y

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Calculation of y(x) and z(x)

We apply the equation of the point-slope line (plane xy):

Slope = m = \frac{y_{2} - y_{1} }{x_{2} - x_{1}}          (3)

Equation of the line = y - y_{1} =m(x-x_{1} )          (4)

Replacing the points (1,0) and (0,1) in (3):

m=\frac{1-0}{0-1} =-1

Replacing the point (1,0) and m = -1 in (4):

y-0=(-1)(x-1)

y(x) = -x + 1 (Line A-B)          (5)

We apply the equation of the point-slope line (plane xz):

Slope = m = \frac{z_{2} - z_{1} }{x_{2} - x_{1}}          (6)

Equation of the line = z - z_{1} =m(x-x_{1} )          (7)

Replacing the points (1,0) and (0,1) in (6):

m=\frac{1-0}{0-1} =-1

Replacing the point (1,0) and m = -1 in (7):

z-0=(-1)(x-1)

z(x) = -x + 1 (Line A-C)        (8)

Replacing (5) and (8) in (2)

S(x) = \frac{(-x + 1) * (-x + 1)}{2} =\frac{(-x + 1)^{2} }{2}          (9)

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V = \int\limits^1_0 {\frac{(-x + 1)^{2} }{2}} \, dx = \int\limits^1_0 {\frac{x^{2}-2x+1 }{2}} \, dx

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V= \frac{1}{2} (\frac{1}{3} -1 +1) = \frac{1}{6}

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