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Pani-rosa [81]
4 years ago
10

What is the scientific notation for 0.000639

Mathematics
1 answer:
daser333 [38]4 years ago
4 0

Answer:

6.39*10^-4

Step-by-step explanation:

according to the form that is used to convert usual into scientific notation it be like 6.39*10^-4

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Roll two fair dice. Each die has six faces. A. Let A be the event that either a 3 or 4 is rolled first followed by an odd number
zhenek [66]

Answer:

A. 0.16

B. 0.58

C. No

D. Dependent

Step-by-step explanation:

A.

The sampling space has 36 outcomes.

The event A has 6 outcomes (3,1), (3,3), (3,5), (4,1), (4,3),(4,5)

So P(A)= 6/36 = 0.16

B.

The table in the picture shows the 15 outcomes that are not allowed, so there are 36-15 = 21 possible outcomes for B and its probability is 21/36 = 0.58

C.

Are A and B mutually exclusive events?

No since their intersection is not empty, for example (3,1) belongs to both A and B

D.

In order for A and B to be independent, it must happen that

P(A∩B)=P(A)P(B)

A∩B={(3,1),(3,3),(4,1)} so P(A∩B) = 3/36  

whereas

P(A)P(B) = (6/36)(21/36) = (1/6)(7/12)=7/72

So A and B are not independent.

7 0
4 years ago
Joe determined the mass of 2 boxes using a scale. Since the cost of each box is the same, Joe would like to choose the box with
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Answer:

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What are the missing terms 64, -32, 16, -8, ___, ___?
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