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4 years ago

PLEASE HELP, 30 POINTS what system of equations is equivalent to this system?

Mathematics

1 answer:

Elena L [17]4 years ago

5 0

The answer I got was The third one

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In which month were income greater than the expenses

lbvjy [14]

You need to provide the pic in order to get the answer.

8 0

3 years ago

Use the ALEKS calculator to approximate 151. Round your answer to the nearest hundredth. 151 0 X 3 ?

Alborosie

Answer:

12.29

Explanation:

We are required to find the square root of 151 rounded to the nearest hundredth.

$\sqrt{151}=12.288205727$

Next, we round to the nearest hundredth, that is, 2 digits after the decimal point.

$\sqrt{151}\approx12.29$

The answer is 12.29

5 0

2 years ago

Please help me with this.

Dafna11 [192]

THE ANSWER OF THIS QUESTION IS 9

5 0

4 years ago

3/1 x 2 /58 what is it

olya-2409 [2.1K]

Answer:

the answer would be 21/5 or 4.5

Step-by-step explanation:

to solve this equation you would use the butterfly method

3/1 x 2/58

3x28=84 and 5x1=5

your fraction is going to be 84/5.

84 can be reduced to 21. so your <u>answer would be 21/5</u>. in the decimal form, it would be <u>4.5</u>

5 0

2 years ago

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

4 0

3 years ago