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myrzilka [38]
3 years ago
12

Isabella is making a display board for the school council elections. the display is 4.25ft by 6 ft rectangle. she needs to add a

ribbon border around the entire display board. what is the length of ribbon that she needs?
Mathematics
1 answer:
inna [77]3 years ago
5 0
(4.25×2)+(6×2)=
8.5+12=20.5ft
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help solve this problem Based on a​ poll, 62​% of Internet users are more careful about personal information when using a public
erma4kov [3.2K]

Answer

The probability that among four randomly selected Internet​ users, at least one is more careful about personal information when using a public​ Wi-Fi hotspot is 0.979.

Step-by-step explanation:

Since  62​% of Internet users are more careful about personal information when using a public​ Wi-Fi hotspot.

Therefore, the Probability of 62​% of Internet users are more careful about personal information when using a public​ Wi-Fi hotspot is, p=0.62.

We have to find the probability that at least one user is more careful about personal information when using wi-fi hotspot.

Probability of internet users are not more careful about personal information when using a public wi-fi hotspot, i.e q=1-p

q=1-0.62=0.38

Use Binomial Distribution, i.e,  P\left ( X \right )=^nC_xp^xq^\left ( n-x \right )

p=0.62, q=0.38, n=4.

Required Probability  P\left ( X\geq 1 \right )=P\left ( X=1 \right )+P\left ( X=2 \right )+P\left ( X=3 \right )+P\left ( X=4 \right )

or

P\left ( X\geq 1 \right )=1-P\left ( X=0 \right )

                                          =1-^4C_0p^0q^\left ( 4-0 \right )

                                          =1-4\cdot1\cdot q^\left ( 4-0 \right )

                                         =1-4\cdot \left ( 0.38 \right )^4

                                         =1-0.02085136=0.97914864

Therefore, the probability that at least one users more careful about personal information when using wi-fi hotspot, i.e 0.979(approx).

RESULT:

<u>The result should not be impacted by this because volunteers are likely to have the most relevant responds.</u>



6 0
2 years ago
Can someone help me with math
kkurt [141]
A is the correct answer, I believe.
7 0
2 years ago
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Savatey [412]

Answer: 3ad^3


Step-by-step explanation:

Given term: 12ad^3

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Here the variables are a and d, where d has power 3.

From the given options 3ad^3 is the right answers as it has the same variables and power.

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7 0
3 years ago
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Lunna [17]

Answer:

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Step-by-step explanation:

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Given data

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Making r subject of formula we have

r= 88π/2π

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6 0
3 years ago
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