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quester [9]
3 years ago
9

Joe has 21 pounds of clay. He needs 5 1/4 pounds of clay to make one piece of pottery. How many pieces of pottery can he make?

Mathematics
2 answers:
Pani-rosa [81]3 years ago
8 0
He can make 4 pieces of pottery with 21 pounds of clay. To get this answer all you need to do is divide 21 by 5 1/4 or 5.25
Vikentia [17]3 years ago
5 0
He can make 4 pieces
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Answer:

Step-by-step explanation:

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Probability of that a number is 9 = \dfrac{1}{10}   [Since total digits = 10]

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Since each digit in the license plate is independent from the other  and there is only two possible outcomes for given case (either 9 or not), so we can use Binomial.

Binomial probability formula:  P(X=x)=^nC_xp^x(1-p)^{n-x}

, where n= total trials , p = probability for each success.

Let x be the number of 9s in the license plate number.

X\sim Bin(n=6, p=\dfrac{1}{10}})

Then, the probability that the license number of a randomly selected car has exactly two 9's will be :

P(X=2)=^6C_2(\dfrac{1}{10})^2(1-\dfrac{1}{10})^{6-2}\\\\=\dfrac{6!}{2!(6-2)!}(\dfrac{1}{100})(\dfrac{9}{10})^4=0.098415

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