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3 years ago

Need help on this question plz and thank you

Mathematics

2 answers:

Ronch [10]3 years ago

7 0

Try B. or A. Plz correct if it’s wrong good luck

natka813 [3]3 years ago

3 0

Answer: B

Step-by-step explanation:

You might be interested in

What is the value of x in the<br> geometric sequence<br> x,3,-1/3

GalinKa [24]

The value of the unknown variable x by virtue of the geometric sequence given in the task content is; -27.

<h3>What is a geometric sequence and what is the value of x in the sequence given?</h3>

It follows from the task content above that the variable given above is a member of the geometric sequence.

Hence, since it follows from convention that the geometric sequence in discuss has same common difference across each successive term and hence , we have;

3/x = (-1/3) ÷ 3

x = -27.

Therefore, the value of the unknown variable x by virtue of the geometric sequence given in the task content is; -27.

Read more on geometric sequence;

brainly.com/question/1509142

#SPJ1

6 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

Find two consecutive odd integers such that 32 more than the lesser is three times the greater

Maslowich

Answer:

First odd number = 13

Second odd number = 15

Step-by-step explanation:

Let

First odd number = 2x + 1

Second odd number = 2x + 3

According to given conditions:

32 + 2x + 1= 3 (2x + 3)

33 + 2x = 6x + 9

Taking terms with x to left and constants to right

2x - 6x = 9 - 33 (sign of transferred terms will be changed)

-4x = -24

Dividing both sides by -4

x = -24/-4

x =6

So,

First odd number = 2x + 1 = 2*6 + 1 = 12 + 1 =13

Second odd number = 2x + 3= 2*6 +3= 12 + 3 = 15

I hope it will help you!

4 0

3 years ago

The owner of a used music store bought a compact disc for $4.70. When she sold it, her profit was $4.75. What was the selling pr

meriva

9.45 just add the two numbers together =)

7 0

3 years ago

Asap help!

prisoha [69]

We're given s = 8^(3/2) as the side length. If we square both sides then we have s^2 = [8^(3/2)]^2 = 8^3. Note how the '2's effectively cancel out. This is because we multiply the exponents (3/2) and 2 to get (3/2)*2 = (3/2)*(2/1) = (3*2)/(2*1) = 6/2 = 3.

So A = s^2 = 8^3 = 512 is the area of the square

4 0

4 years ago