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Cloud [144]
3 years ago
13

Which of the following numerical expressions may represent the probability of a simple event? A. 1/2*1/6 B. 1/25*1/2 C. 1/52 D.

1/52+1/2
Mathematics
2 answers:
ladessa [460]3 years ago
7 0
The word simple event in probability means that there is only one event involved. This means that only one fraction is involved in the solution. From the given choices above, the answer would be letter C. 1/ 52. 
MariettaO [177]3 years ago
5 0
<span>A simple event is a unique possible outcome of a random circumstance. For an experiment, an event to be any collection of possible outcomes. Any particular outcome is known as a simple event. An event is a simple events or a subset of the sample space.
</span>If there are m equally likely simple events in the sample space, then the probability for each is <span><span>1/m</span></span>. Supposed that a fair coin is tossed, then the sample space is {H, T}. And the probability is<span> <span><span>1/2</span></span> </span><span>for each outcome.</span><span>
Thus,
C. 1/52 is the best Answer</span>
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Pls help me not fail
nignag [31]

Answer:

D

Step-by-step explanation:

Using the Cosine rule to find AC

AC² = BC² + AB² - (2 × BC × AB × cosB )

      = 18² + 12² - ( 2 × 18 × 12 × cos75° )

      = 324 + 144 - 432cos75°

      = 468 - 111.8

      = 356.2 ( take the square root of both sides )

AC = \sqrt{356.2} ≈ 18.9

-----------------------------------------

Using the Sine rule to find ∠ A

\frac{18}{sinA} = \frac{18.9}{sin75} ( cross- multiply )

18.9 sinA = 18 sin75° ( divide both sides by 18.9 )

sinA = \frac{18sin75}{18.9} , then

∠ A = sin^{-1} ( \frac{18sin75}{18.9} ) ≈ 66.9°

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Gnom [1K]
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vovikov84 [41]

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Step-by-step explanation:

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lbvjy [14]
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