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BabaBlast [244]
3 years ago
10

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select i

s a 2 or King?
Mathematics
1 answer:
SashulF [63]3 years ago
7 0

Answer:

0.1538

Step-by-step explanation:

There are 8 cards that are either 2s or Ks.

P(2 or K)  = 8/52

P(2 or K) = 0.1538

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the exact answer is 65.97


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4 years ago
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How do measurements of time differ for events in a frame of reference that moves at 50% of the speed of light relative to us? At
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Answer with explanation:

Relation between Speed , Distance and time

Distance =Speed × Time

→It means Speed is inversely Proportional to time.

As distance will remain constant , in that frame of reference

If speed of light in a Medium

                              =s=3 \times 10^8 \frac{\text{meter}}{\text{second}}

Then, time taken to cross the medium = t seconds or hours or another unit of time.

Now, If speed of light is 50% of the speed of light relative to us

    That is Speed of light in another medium

                 =w=\frac{50}{100} \times 3 \times 10^8\\\\=1.5 \times 10^8 \frac{\text{meter}}{\text{second}}

Then, time taken to cross the medium = 2t seconds or hours or another unit of time.

Using Unitary Method

  \rightarrow v_{1}\times t_{1}=v_{2} \times t_{2}\\\\1.\rightarrow 3 \times 10^8 \times t=\frac{50}{100} \times 3 \times 10^8 \times t_{1}\\\\t_{1}=2t\\\\2.\rightarrow 3 \times 10^8 \times t=\frac{99.5}{100} \times 3 \times 10^8 \times t_{2}\\\\t_{2}=\frac{1000t}{995}\\\\t_{2}=\frac{200t}{199}

             

7 0
4 years ago
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In a carnival game, you roll 2 dice. If the sum is 5, you receive a $6 payoff. If the sum is 10, you receive a $9 payoff. Otherw
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Sample space of rolling 2 dice = {36} outcomes
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P(getting a sum of 5) = 4/36 = 1/9
The expected payoff is :
P(getting a sum of 5) x $9 = (1/9).(9) = 9/9 = $1

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3 years ago
What is the answer for this
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Answer:

it is 2 feet per second

Step-by-step explanation:

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