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Kipish [7]
3 years ago
9

When playing the card game Blackjack, multiple decks are used and reshuffled often so that the outcomes of the cards dealt are a

pproximately independent. When a player receives two cards that are a combination of an ace and a face card, this is called a “natural blackjack” and automatically wins. A natural blackjack should occur in 4.5% of the rounds played. What is the probability that a player plays 20 rounds of Blackjack and gets two or more natural blackjacks?
Advanced Placement (AP)
1 answer:
Pavlova-9 [17]3 years ago
7 0

Answer:

The correct answer is (C) or .227. The number of natural blackjacks (X) follows a binomial distribution with n=20, p=0.045.

Explanation:

P(X≥2)=1−P(X≤1)=1−0.773=0.227.

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1.32 x 10^8 X 2.34 10^4
zaharov [31]

Answer:

30888*10^8

Explanation:

concept used

law of exponent

a^x * a ^y =a^{x+y}

____________________________

1.32 x 10^8 X 2.34 10^4

multiplying 1.32 and 2.34 we have

1.32*2.34 = 3.0888

10^8 X 10^4 = 10^(8+4) = 10^12

thus,

1.32 x 10^8 X 2.34 10^4 = 3.0888*10^12

3.0888 can be written as 30888/10000

1.32 x 10^8 X 2.34 10^4 = 30888/10000*10^12

10000 = 10^4

1.32 x 10^8 X 2.34 10^4 = (30888/10^4)*10^12

concept used now

a^x / a ^y =a^{x-y}

1.32 x 10^8 X 2.34 10^4 = 30888*10^(12-4)

1.32 x 10^8 X 2.34 10^4 = 30888*10^8

thus, answer is 30888*10^8

6 0
3 years ago
Your examples must show how each wave behaves (absorbed, transmitted, and reflected).
Fittoniya [83]

Answer:

Visible Light Absorption

Atoms and molecules contain electrons. It is often useful to think of these electrons as being attached to the atoms by springs. The electrons and their attached springs have a tendency to vibrate at specific frequencies. Similar to a tuning fork or even a musical instrument, the electrons of atoms have a natural frequency at which they tend to vibrate. When a light wave with that same natural frequency impinges upon an atom, then the electrons of that atom will be set into vibrational motion. (This is merely another example of the resonance principle introduced in Unit 11 of The Physics Classroom Tutorial.) If a light wave of a given frequency strikes a material with electrons having the same vibrational frequencies, then those electrons will absorb the energy of the light wave and transform it into vibrational motion. During its vibration, the electrons interact with neighboring atoms in such a manner as to convert its vibrational energy into thermal energy. Subsequently, the light wave with that given frequency is absorbed by the object, never again to be released in the form of light. So the selective absorption of light by a particular material occurs because the selected frequency of the light wave matches the frequency at which electrons in the atoms of that material vibrate. Since different atoms and molecules have different natural frequencies of vibration, they will selectively absorb different frequencies of visible light.

7 0
2 years ago
Read 2 more answers
Cramming for an exam is called
ELEN [110]

Answer:

testing effect

Explanation:

i think so

7 0
2 years ago
Read 2 more answers
Ano ang kahulugan ng supply function
lana [24]
A supply function is a model that represents the behavior of the producers and/or sellers in a market.  It represents how much of a good or service a producer/supplier will supply at a price of the product and other factors. Hope this answers the question.
4 0
3 years ago
The development of dangerous strains of disease organisms is a consequence of which agricultural practice?
arlik [135]

Answer:

A)

Explanation:

b and e kills organisms, so it doesn't evolve the diseases. genetic modification causes the plants to be resistant, and doesnt target diseases, so the disease isnt evolved. only antibiotics make diseases evolve, overuse of it causes the disease to develop resistance if it isnt completely killed off.

5 0
3 years ago
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