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4 years ago

Equivalent fractions of 4/5

Mathematics

2 answers:

Sonbull [250]4 years ago

5 0

$\frac{8}{10} \frac{16}{20} \frac{12}{15}$
Hope this helps :)

ddd [48]4 years ago

3 0

A fraction equivalent to 4/5 is 8/10,also 12/15.To find an equivalent fraction all you have to do is multiply the numerator and denominator by the same number.

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The probability that A will die within the next 20 years is 0.025, and that B will die within the next 20 years is 0.030. What i

sergey [27]

Answer:

0.00075

0.02425

0.94575

Step-by-step explanation:

Let E1 be the event that A dies within next 20 years and E2 be the event that B dies within next 20 years.

Probability that E1 occurs = P(E1) = 0.025

Probability that E2 occurs= P(E2)= 0.030

Since the two events does not depend on each other, E1 and E2 are independent events.

For two independents E1 and E2 , the probability that both E1 and E2 occurs simultaneously is P(E1 ∩ E2) is given by:

P(E1 ∩ E2) = P(E1)*P(E2)

Probability that both A and B dies in next 20 years = $0.025\times0.03=0.00075$

Probability that A will die and B will not die is given by=

P(E1 ∩ E2') = P(E1) - P(E1 ∩ E2) = 0.025 - 0.00075 = 0.02425.

Probability that neither A nor B dies is given by=

P(E1' ∩ E2') = 1 - [ P(E1 ∪ E2) ] = 1 - [ P(E1) + P(E2) - P(E1 ∩ E2) ]

= 1 - [0.025 + 0.030 - 0.00075] = 0.94575

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3 years ago

A college has thirteen instructors qualified to teach a special computer laboratory course which requires two instructors to be

Kobotan [32]

Answer:

156 different pairs will be there.

Step-by-step explanation:

As the order is essential as we need different pairs therefore permutations will be used.

A permutation is any ordered subset of the objects r selected with regard to their order, from the set of n distinct objects. It is given by nPr where n> r

Total number is 13 and required number is 2

n= 13 and r= 2

13 P2= 156 possible combinations.

A combination is any subset of the objects r selected without regard to their order, from the set of n distinct objects. It is given by nCr where n> r

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3 years ago

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goblinko [34]

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3 years ago

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