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kati45 [8]
3 years ago
12

30/90 del número de plantas en un cultivo de caña está contaminada. De estas, el 1/2 ha sido tratada. ¿Cual es la fracción del n

úmero de plantas del cultivo que no ha sido tratada?
Mathematics
1 answer:
Helen [10]3 years ago
5 0

Answer:

1/6

Step-by-step explanation:

De la pregunta, sabemos:

30/90 del número de plantas de un cultivo de caña está contaminado.

30/90, simplificamos aún más

30/90 => 3/9 => 1/3

De estos, la mitad han sido tratados.

La fracción de los cultivos tratados son:

1/2 de 3/9 = 1/2 × 1/3

= 1/6

La fracción del número de plantas del cultivo que no ha sido tratada se calcula como:

1/3 - 1/6

El mínimo común denominador es 6

= (2 × 1) - (1 × 1) / 6

= 2 - 1/6

= 1/6

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3 years ago
solve the following and explain your steps. Leave your answer in base-exponent form. (3^-2*4^-5*5^0)^-3(4^-4 over 3^3)*3^3 Pleas
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Answer:

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Step-by-step explanation:

It appears you're trying to simplify ...

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4 0
3 years ago
Let A and B be two independent events. If p(A)=3/5 and p(B')=1/3 then the value of p(AUB)' is equal to?
posledela

Answer:

P(AUB)'=2/15

Step-by-step explanation:

According to the Question,

  • Given That, A and B be two independent events. If P(A)=3/5 and P(B')=1/3.

So, P(B)=1-P(B') ⇒ P(B)=1-(1/3) ⇔ P(B)=2/3

  • The Product Rule of Probability says For independent events P(A∩B)=P(A)×P(B)

P(A∩B)=3/5 × 2/3 ⇒ P(A∩B)=2/5

  • We know, P(AUB)=P(A)+P(B)-P(A∩B)

Thus, P(AUB)= 3/5 + 2/3 - 2/5

P(AUB)=1/5 + 2/3

P(AUB)=(3+10)/15 ⇔P(AUB)=13/15

  • Now, The Value Of P(AUB)'=1-P(AUB) ⇔ 1 - 13/15 ⇒ P(AUB)'=2/15
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