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3 years ago

Solve x plus 3x equals 36

Mathematics

2 answers:

ella [17]3 years ago

4 0

X+3x=36 reduces to 4x=36, so when you divide both sides by 4, x=9

Lelu [443]3 years ago

3 0

$x + 3x = 36\\\\4x = 36\\Divide\ both\ sides\ by\ 4\\\\\boxed{x = 9}$

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Svetllana [295]

The answer is
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g(0)=4

g(5/2)=x^4-5x^2+4=11.81
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7 0

3 years ago

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10. A random sample of 10 fibers is taken from a collection of 92 fibers that consists of 43 fibers of polymer A, 17 fibers of p

vazorg [7]

Answer:

0.1150 = 11.50% probability that the sample does not contain any fibers of polymer B

Step-by-step explanation:

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

Fibers are chosen without replacement, which means that we use the hypergeometric distribution.

92 fibers means that $N = 92$

Sample of 10 means that $n = 10$

No polymeter B which means that $x = 0$

17 fibers of polymeter B which means that $k = 17$

a. What is the probability that the sample does not contain any fibers of polymer B

This is P(X = 0).

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 0) = h(0,92,10,17) = \frac{C_{17,0}*C_{75,10}}{C_{92,10}} = 0.1150$

0.1150 = 11.50% probability that the sample does not contain any fibers of polymer B

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3 years ago

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Jobisdone [24]

Answer: this was a rotation.

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3 years ago

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4(y-9) brainlist question

Degger [83]

Answer:

4y-36

Step-by-step explanation:

you distribute the 4 to y and 9

(4 x y) - ( 4 x 9)

4y - 36

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3 years ago

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laila [671]

Answer:

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Step-by-step explanation:

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3 years ago