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garik1379 [7]
3 years ago
8

Determine whether the statement is true or false. If the statement is​ false, make the necessary​ change(s) to produce a true st

atement.
If an event is certain to​ occur, its probability is 1.
Mathematics
1 answer:
Musya8 [376]3 years ago
3 0

Answer: false

Step-by-step explanation:

An event that cannot possibly happen has a probability of zero. If there is a chance that an event will happen, then its probability is between zero and 1.

hope this helps

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Need help on this one
Furkat [3]
The trick here is to not use sin and cos at all.

The -13/15 is the x coordinate of a line from the origin to the unit circle (the line with angle theta). That happens to be the cos(theta).

The y coordinate is the sin(theta).

You can draw this as a triangle where x^2 + y^2 = 1.

So y = √(1 - (13/15)^2) ≈ 0.49889. But your exact answer should be:

sin(\theta) = \sqrt{1-(\frac{13}{15})^2} = \frac{2\sqrt{14}}{15}


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4 years ago
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Step-by-step explanation:

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