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2 years ago

Si en 1950 el 30% de la población global, alrededor de 700 millones de personas habitaban

Mathematics

1 answer:

kramer2 years ago

8 0

Answer:

zonas urbanas => 30 % de la poblacion => 700 millones

poblacion total => 100 % de la poblacion => x => 2333.3 millones

poblacion rural => 70% de la poblacion => x - 700 => 1633.33 millones

$x = \frac{700 \times100}{30} =2333.3$

$x-700=2333.3-700=1633.33\\$

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Norma-Jean [14]

Answer:

35 - m

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2 years ago

The weather forecast for the weekend is a 34% chance of rain for Saturday and a 32% chance of rain for Sunday. If we assume that

kaheart [24]

Answer:

$P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088$

And then replacing in the total probability formula we got:

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And rounded we got $P(A \cup B ) = 0.551$

That represent the probability that it rains over the weekend (either Saturday or Sunday)

Step-by-step explanation:

We can define the following notaton for the events:

A = It rains over the Saturday

B = It rains over the Sunday

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$P(A) = 0.34 , P(B) = 0.32$

And we are interested on the probability that it rains over the weekend (either Saturday or Sunday), so we want to find this probability:

$P(A \cup B)$

And for this case we can use the total probability rule given by:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

And since we are assuming the events independent we can find the probability of intersection like this:

$P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088$

And then replacing in the total probability formula we got:

$P(A \cup B) = 0.34+0.32 - 0.1088 = 0.5512$

And rounded we got $P(A \cup B ) = 0.551$

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3 years ago

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kipiarov [429]

Answer:

f^-1(x)=1/4x+2

Step-by-step explanation:

y=4x-8

change x and y

x=4y=8

switch sides

4y-8=x

add 8

4y=x+8

divide both sides by 4

y=1/4x+2

substitute f^-1(x) for y

f^-1(x)=1/4x+2

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2 years ago

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melisa1 [442]

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2 years ago

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klio [65]

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2 years ago

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