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abruzzese [7]
2 years ago
13

What is four-fifths of twenty?

Mathematics
2 answers:
Ksivusya [100]2 years ago
3 0
The is answer is sixteen.
Yakvenalex [24]2 years ago
3 0
The answer is 16.
(4/5)(20)= 80/5 = 16
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Evgesh-ka [11]

Answer:

Expected number of matches that occur = 4 matches

Step-by-step explanation:

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Thus, for example X_1 is the event that turning over one card results in an ace while X_2 is the event that turning over second card reveals a deuce.

The number of matched cards "N" is given by the sum of this indicator random variable as shown in the attached file;

7 0
3 years ago
A random sample of 50 bottles is selected from the production line of a large manufacturing company. The mean weight of the cont
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Answer:

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4 0
3 years ago
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ollegr [7]
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8 0
2 years ago
Seventy cards are numbered 1 through 70 , one number per card. One card is randomly selected from the deck. What is the probabil
Vanyuwa [196]

Answer:

Probability = \frac{2}{35}

Step-by-step explanation:

Given

Total = 70

First, we need to list the multiples of 5

M_5 = \{5,10,15,20,25,30,35,40,45,50,55,60,65,70\}

Then, multiples of 3M_3 = \{3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69\}

Next, is to list out the common elements in both

M_3\ n\ M_5 = \{15,30,45,60\}

n(M_3\ n\ M_5) = 4

The required probability is then calculated as thus:

Probability = \frac{n(M_3\ n\ M_5)}{Total}

Probability = \frac{4}{70}

Probability = \frac{2}{35}

7 0
3 years ago
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Vesna [10]

Answer:

90 minutes or 1 hour and 3 minutes

Step-by-step explanation:

because for each 1/3 is 30 minutes

8 0
3 years ago
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