3 years ago

Given that X = - 2 and y = 4 , Evaluate the expression. 5y – 4x

Mathematics

1 answer:

Kipish [7]3 years ago

4 0

Answer: 28

Step-by-step explanation: 5(4)-4(-2) which is 20+8 and that is 28.

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Write and solve an equation to find the number.

Advocard [28]

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3 years ago

American kestrels live in More Mesa near your professor’s house. Suppose that there are 100 birds, of which a random sample of s

Ulleksa [173]

Answer:

P(X=3) = 0.2013

Step-by-step explanation:

After taking and tagging the first 20 birds, then we have a proportion of 20% of tagged birds within the population, that is

$p=\frac{n}{N}$

$p=\frac{20}{100}=0.20$

Supposing that the probability (0.20) of capturing a bird <em>remains constant</em>, we may resolve it as it follows:

Capturing 10 birds can be considered as a binomial experiment with a success probability p = 0.2

Let, $P(X=x)=nCx*p^{x}*(1-p)^{n-x}$ be the expression of the binomial distribution, for our case we have:

p=0.2

x = 3

n=10

Then,

$P(X=3)=10C3*0.2^{3}*0.8^{10-3}$

$P(X=x)=0.2013$

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3 years ago