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3 years ago

SIMPLIFY -3/4( 8/9Y - 18) - 3/5(5/6Y + 25)?

Mathematics

2 answers:

Art [367]3 years ago

7 0

Answer:

I believe the answer is

-7y+9/6

WITCHER [35]3 years ago

3 0

Answer:

-7/6 y -3/2

Step-by-step explanation:

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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 remains constant, 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,

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

$P(X=x)=0.2013$

Therefore, the probability that exactly 3 of the 10 birds in the new sample were previously tagged is 20.13%

5 0

3 years ago

Can someone pls find the answer ASAP!!!!

Cerrena [4.2K]

It should be y=x Good luck!

7 0

3 years ago

Read 2 more answers

1. Amanda tells you that because a variable is in the denominator, the equation three over x plus one over three equals five ove

Hunter-Best [27]

Answer: x = 6

Step-by-step explanation:

$\dfrac{3}{x}+\dfrac{1}{3}=\dfrac{5}{6}$

$(6x)\dfrac{3}{x}+(6x)\dfrac{1}{3}=(6x)\dfrac{5}{6}$ multiplied by common denominator

18 + 2x = 5x

-2x -2x

18 = 3x

÷3 ÷3

6 = x

Since "x" is in the denominator, the restriction is that x ≠ 0. If the solution was x = 0, then the solution would not be valid and would be eliminated as an answer.

Remember that "x" is just an unknown value. It is possible to add two fractions together and have their sum be a fraction.

For example: $\dfrac{1}{5} + \dfrac{2}{5} = \dfrac{3}{5}$ could be written as $\dfrac{1}{5} + \dfrac{2}{x} = \dfrac{3}{5}$ . When we solve it, we will get x = 5.