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melamori03 [73]
3 years ago
7

WHAT IS "K" 310 minus (30 times 7) = 5 times k

Mathematics
1 answer:
RSB [31]3 years ago
7 0

Answer:

k = 20

Step-by-step explanation:

310-(30x7) = 5k

310-210=5k

100=5k

 /5   /5

20=k

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A fair coin is tossed three times in succession. The set of equally likely outcomes is StartSet HHH comma HHT comma HTH comma TH
liq [111]

The probability of getting exactly zero tails is 1/8.

Step-by-step explanation:

When a fair coin is tossed three time, the set of equally likely outcomes is:

S= {HHH,HHT, HTH, THH, HTT, THT, TTH, TTT}

n(S)=8

Let A be the event that there are exactly zero tails which means there are all heads

Then

A= {HHH}

n(A)=1

P(A)=\frac{n(A)}{n(S)}\\=\frac{1}{8}

The probability of getting exactly zero tails is 1/8.

Keywords: Probability, Equally likely events

Learn more about probability at:

  • brainly.com/question/13219835
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3 years ago
A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a
TEA [102]

Answer:  Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

\mu_x= np

\mu_x= 100\times 1/5

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Now, the standard deviation, \sigma_x= \sqrt{n\times p\times (1-p)}

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3 years ago
-16 + 3n = -8 - 5n what does n equal?
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Step-by-step explanation:

-16 + 3n = - 8 - 5n

Bringing like terms on one side

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Answer:

1.x/15 < 4.25

2. she can have a maximum of 63 lizards.

Step-by-step explanation:

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3 years ago
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