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mr Goodwill [35]
2 years ago
15

50 POINTS Mathematics

Mathematics
2 answers:
lara31 [8.8K]2 years ago
7 0

Answer:

(a) 0.8487

(b) 0.94

Step-by-step explanation:

Given:

  • P(A) = 0.11
  • P(B) = 0.83

(a) P(A or B) = P(A) + P(B) - P(P and B)

For independent events, P(P and B) = P(A)P(B)

⇒ P(A or B) = P(A) + P(B) - P(A)P(B)

= 0.11 + 0.83 - (0.11 · 0.83)

= 0.94 - 0.0913

= 0.8487

(b) P(A or B) = P(A) + P(B) = 0.11 + 0.83 = 0.94

victus00 [196]2 years ago
5 0

Answer:

Step-by-step explanation:

a) P(A or B) = P(A) x P(B)

P(A) x P(B) = 0.11 x 0.83 = 0.0913

b) P(A or B) = P(A) + P(B)

0.11 + 0.83 = 0.94

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At present the sum of Monica's age and daughter's age is 44 years. . After 2 years Monica's age will be three times that if her
sergeinik [125]

Answer:

Monica's age = 34 years

Her daughter's age = 10 years

Step-by-step explanation:

Let Monica's age = x

Let her daughter'sage = y

x + y = 44   -------> equ 1

After 2 years:

Monica's age = x + 2

Her daughter's age = y + 2

x + 2 = 3 * (y+2)

x + 2 = 3y + 6

      x = 3y + 6 -2

      x = 3y + 4

Put x value in equ 1:

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x = 44 -10

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Read 2 more answers
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