Why do the probability of an event and the probability of its complement add up to 1

1 answer:

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<span>the probability of an event and the probability of its complement add up to 1 because the total events are the even it self and its compliment, so its probability equal to 1 because these are all the possible events that will occur. for example a coin toss, an event head will happen 0.5, and its complement is tails which will also happens 0.5</span>

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Cayden has several screws on a scale, and the scale reads 80.955g. Cayden adds 1 more screw, and the scale reads 84.81g. What is

grin007 [14]

Answer:

The mass of the last screw added is 3.855 grams.

Step-by-step explanation:

if you take 84.81 and subtract the original mass you should get the weight that was added.

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2 years ago

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