Pls help me I don't understand ​

The value of C is -3 and the value of B is 5

Given the expression

(2x + 3)(4x − 1)

On expansion, ww will have:

(2x + 3)(4x − 1) = 8x^2 - 2x + 12x - 3

(2x + 3)(4x − 1) = 8x^2 + 10x - 3

Hence the value of C is -3

For the expression (x + 2)(2x^2 + x − 1)

Expnd

(x + 2)(2x^2 + x − 1)  = 2x^3 + x^2 - x + 4x^2 + 2x - 2

(x + 2)(2x^2 + x − 1) = 2x^3+ 5x^2 +x - 2

Hence the value of B is 5

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Answer:

5

Step-by-step explanation:

A tech company bought a number of computers for its employees: 6 costing $1600 each, 4 costing $1200 each, and y costing $900 each, where y is a positive odd integer. what is the greatest possible value of y

Solution:

The median of a group of numbers is the middle number when the group of numbers have been arranged either in ascending of descending other. The median of an even group of numbers is the average of the two most middle most numbers while the median of an odd group of numbers is the middle number.

Since there are 6 computers costing $1600, 4 computers costing $1200 each and y computers costing $900 each. Since y is odd, hence y + 6 + 4 would be odd and the median would be the middle number.

Given that the median price = $1200, this means that the middle of the group of numbers is $1200

900, 900, ..., 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

Since y is odd, for the median price to be $1200, y has to be 3 or 5.

If y = 3:

900, 900, 900, 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

median = $1200

If y = 5:

900, 900, 900, 900, 900, 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

Median = $1200

Therefore the greatest possible value of y is 5

By knowing that the median must be $1,200, we will see that the greatest possible value of y is y = 9.

We know that the company bought:

We know that y is a positive odd number.

We also know that the median is $1200, now we want to get the maximum value of y such that the median is $1200. (Remember that the median is the value of the middle element of the set).

Then we will have the distribution:

{ y elements,  $1200, the other 3 $1200 computers plus the 6 $1600 computers}

Notice that y (the number of elements at the left of the median) must be equal to the number at the right of the median.

At the right of the median, we have a total of 9 computers, then y must be equal to 9.

The greatest possible value of y is 9.

If you want to learn more, you can read:

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Answer:

P = 9; A = 3

Step-by-step explanation:

a)

1. ATC is similar to GDO

2. 12 / 3 = 4

3. Triangle A has to be divided by 4 to figure out what Triangle B is

4. GD = 3, GO = 4, DO = 2

5. P = 3 + 4 + 2 + 9

b)

1. B = 2, H = 3

2. Plug into given equation (A = 1/2bh)

3. A = 1/2*2*3

4. 1/2 * 6

5. A = 3

Answer:

can u translate that to English... i have no idea what you just said

Step-by-step explanation:

LOL

Answer:

Step-by-step explanation:

20

this is so the other person gets his/her/their well earned brainliest :)

Answer:

Step-by-step explanation:

4a: x=729

4b: x=9/25

5a ln (2)

5b log2(24

Answer:

9-10

Step-by-step explanation:

nice lol

Answer:

a) The mean is 225 and the standard deviation is 11.12.

b) It means that in samples of 500 adult Americans, the number of those who believe that the overall state of moral values in the United States is poor is expected to be around 225.

c) No, since 240 is less than 2.5 standard deviations from the mean.

Step-by-step explanation:

For each adult American, there are only two possible outcomes. Either they believe the overall state of moral values in the US is poor, or they do not. The adults are independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

[tex]E(X) = np[/tex]

The standard deviation of the binomial distribution is:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]

In the binomial distribution, a value is considered to be unusual if it is more than 2.5 standard deviations from the mean.

45% of adult Americans believe that the overall state of moral values in the United States is poor.

This means that [tex]p = 0.45[/tex]

(a) Compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values in the United States is poor based on a random sample of 500 adult Americans.

Sample of 500 means that [tex]n = 500[/tex]

Mean:

[tex]E(X) = np = 500*0.45 = 225[/tex]

Standard deviation:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{500*0.45*0.55} = 11.12[/tex]

The mean is 225 and the standard deviation is 11.12.

(b) Interpret the mean.

It means that in samples of 500 adult Americans, the number of those who believe that the overall state of moral values in the United States is poor is expected to be around 225.

(c) Would it be unusual to identify 240 adult Americans who believe that the overall state of moral values in the United States is poor based on a random sample of 500 adult Americans

2.5 standard deviations above the mean is:

225 + 2.5*11.12 = 252.8

So 253 or more would be unusual, 240 no.

Answer:

1/24

Step-by-step explanation:

The probability of drawing a diamond is 1/4 and the prob. of rolling a 5 is 1/6. Multiply the two together

Answer:

3 terms

Step-by-step explanation:

4 4x and 9x

Answer:

2 - a

Step-by-step explanation:

Our equation :

0.4(5 - 2.5a)

Distribute the 0.4 :

(5(0.4) - 2.5a(0.4))

2 - a

The statement which has the strongest association is Males prefer thriller movies.

To obtain which statement has the strongest association, we calculate the probability of each given statement and select that which has the highest probability value.

• probability of  Males prefer comedy movies :

n(males who prefer comedy) / n(males)

= 35 / 122 = 0.287

• probability of Females prefer drama movies :

n(Females who prefer drama) / n(females )

= 65 / 129 = 0.504

• probability of Males prefer thriller movies.

n(males who prefer prefer thriller ) / n(males)

= 75 / 122 = 0.615

• probability of Females prefer thriller movies.

n(females who prefer prefer thriller ) / n(females)

= 18 / 129 = 0.140

Comparing the probabilities obtained, Males prefer thriller has the highest probability, thus the strongest association.

A similar question can be found here : https://brainly.com/question/22520957

Answer:

i got it right this person above me is correct.

Step-by-step explanation:

Answer:

No is correct

Step-by-step explanation:

convert 2/3 into 6ths

4/6 = 8/12

so no, non of them equal to 4/8

Answer: No they are not

Step-by-step explanation:

Answer:

B? - Hopes it helps

Step-by-step explanation:

Happy early valentines Day! - p.s mark me brainly and another bessing comes ur way!

Answer:

IF I am correct, 5

Step-by-step explanation:

98/ 18

Answer:

1a w=-9                 1b s=20/7

2a x=12                 2b v=11

3a b=10                 3b a=9/5

4a c=1                    4b x=2

Step-by-step explanation:

Answer:

They bought 40 shoes and 120 boots.

Step-by-step explanation:

So from the question itself we can make the following equation.

Let "x" be the number of shoes they bought, then...

20(x) + 60(3x) = 8000

20x + 180x = 8000

200x = 8000

x = 8000 / 200

x = 40

From here we know that..

# of shoes they bought = x = 40

# of boots they bough = 3x = (3)(40) = 120

area of this parallelogram=b×h=13×6=72inches

The answer is x=65.

The step by step explanation is on the paper.

Your answer is:

V(n) = 30(0.95)^n

Why?

Well here is why!

Rate of decrease = 5%

Period, n = 10 days

Initial stock price = $30

Value of share price as a function of n:

Value, V(n)

Initial price = A

V(n) = Initial price(1 - rate)^n

V(n) = 30(1 - 0.05)^n

V(n) = 30(0.95)^n

Hope this helps if it did mark brainlist!

Answer : A.  35x (n-6)

Step-by-step explanation

Hi king/quee/royalty. I have the answer: x=36

Answer:

The work done is 3645.6 J or 3.6 kJ

Step-by-step explanation:

M1 = (0.5 kg/m)(12 - x m) = (6 - 0.5x) kg

At the height of x meters (0<=x<=12), the mass of the rope is,

M2 = (36kg/12m)(12 - x m) = (36 - 3x m) kg

At the height of x meters (0<=x<=12), the mass of the water is,

M3 = 10 kg

The mass of the bucket is 10 kg

Then, Total mass M is,

M = M1 + M2 + M3 = (6 - 0.5x) + (36 - 3x) + 10 = (52 - 3.5x) kg

From Force F = mass m * acceleration due to gravity g

Force = mass x gravity

F = 9.8(52 - 3.5x) Newtons

To get the work done W,

Follow the attached file,

The work done is 3645.6 J or 3.6 kJ