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2 years ago

Does anyone know the answer pleaseeee

Mathematics

2 answers:

Veseljchak [2.6K]2 years ago

8 0

Answer:

A, B, C are false. D, E, F are true

Step-by-step explanation:

let's use the number 3 as a case study

A. 3²-1 = 9 - 1 = 8 (false)

B. 3(3-1) = 3 × 2 = 6 (false)

C. (3-1)² = 2² = 4 (false)

D. 3² + 2 = 9 + 2 = 11 (true)

E. 3(3-2) = 3 × 1 = 3 (true)

F. (3-2)² = 1² = 1 (true)

Sav [38]2 years ago

7 0

I’m pretty sure a, d, e and f are correct :)

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Step-by-step explanation:

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$P( A|B) = \displaystyle\frac{P(A \cap B)}{P(B)}$

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$P( \text{ Deaf}|\text{Blue eyes}) = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{P(\text{Blue eyes})}\\\\0.42 = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{0.31}\\\\P( \text{Deaf} \cap \text{Blue eyes}) = 0.42\times 0.31 = 0.1302 = 13.02\%$

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