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Cloud [144]
3 years ago
8

A stack of 20 cards is numbered 1 through 20. One card is selected at random. What is the probability that the card is less than

8?
Mathematics
1 answer:
kvasek [131]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

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serg [7]

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The total cost depends on the weight of the pacakge

8 0
3 years ago
the height of angel falls, the tallest water fall in the world is 3212 feet write this in scientific notation
Andrews [41]

Answer:

3.212*10^3

Step-by-step explanation:

you moved the decimal place 3 times

3 0
3 years ago
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Days before a presidential​ election, a nationwide random sample of registered voters was taken. Based on this random​ sample, i
leonid [27]

Answer:

No.

Step-by-step explanation:

Based on the​ sample, "52% of registered voters plan on voting for Robert Smith with a margin of error of plus or minus​3%." The margin of error was based on a​ 95% confidence level.

Then 95% Confidence Interval is between 49% and 55%. Since confidence interval also includes non-majority proportions, the assumption that "95% confidence, Robert Smith will win the election" cannot be made.

6 0
3 years ago
Is The polar form of a complex number is unique?
Pie

Answer:

  no

Step-by-step explanation:

The angle in the polar form of a complex number can have any multiple of 2π radians added to it, and the number will be the same number. That is, there are an infinite number of representations of a complex number in polar form.

6 0
3 years ago
Which set of ordered pairs does not represent a function?
Leokris [45]
The last one does not represent a function because for it to be a function none of the x’s can repeat and in the last one the 0 repeats.
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