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True [87]
3 years ago
6

I need help please?!!!!

Mathematics
1 answer:
andrey2020 [161]3 years ago
7 0
It’s the first choice: communities property of addition
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A farmer from Whidbey Island: A man claims his whalebone can detect water. You design an experiment using a set of 4 cans, 3 emp
tatyana61 [14]

Answer:

The value is E(x) =  1.25

Step-by-step explanation:

From the question we are told that

The number of cans is n = 4

The number of can that are empty is N = 3

The number of can filled with water is k = 1

The number number of sets of cans is w = 5

Generally probability of detecting the correct can is mathematically represented as

p  =  \frac{k}{n}

=> p  =  \frac{1}{4}

=> p  = 0.25

Generally probability of not detecting the correct can is mathematically represented as

q =  1- p

q =  1- 0.25

q = 0.75

Generally the number of cans expected of the farmer to correctly identify by chance is mathematically represented as

E(x) =  w  *  p

=> E(x) =  5  * 0.75

=> E(x) =  1.25

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3 years ago
The sum of the ages of a china plate and a glass plate is 16 years. Four years ago the china plate was three times the age of th
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China plate is 12 years (16-4) and Glass plate is 4 years (12÷3)
8 0
3 years ago
Solve for ... 2x + 3 ​
lyudmila [28]

Answer:

15

Step-by-step explanation:

3 0
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54 ft = ____ yd 9. 11 L ≈ ____ qt 10. 80 g = ____ kg <br><br>i need help with this
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Answer:

54 ft = 18 yd 9. 11 L ≈ 11.6236 qt 10. 80 g = 0.08 kg

Step-by-step explanation:

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3 years ago
SOMEOJE HELLP PLSSSSSS
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Answer:

Step-by-step explanation:

this seems like substitution

If so its the first part is 12x6

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