brainliest for answer

Answer:

Because if you take 18:3 and divide both sides by 3, you will get 6:1

Step-by-step explanation:

Because 18:3 divided by 3 on both sides equals 6:1, also 6:1 times 3 on both sides equals 18:3.

Answer:

20% of 10 is 2

Step-by-step explanation:

Answer:

176.00 cm^2

Hope you got the answer.

I guess it is 200%

Hope it is correct

Answer:

Step-by-step explanation:

Here i will show you how to calculate the Percent Change from 12 to 36.

Basically, we are trying to find the change from 12 to 36 in terms of percent. We do this in three steps:

1) Find the difference between 12 and 36 as a number.

2) Divide the result from Step 1 by the starting number 12.

3) Multiply the result you got on step two by 100 to get it in terms of percent.

this can be shotenn sown with a simple formulatso, to find the percent change from 12 to 36, we use this formula:

((Y-X)/X)*100 = Percent Change

X is the starting number 12, and Y is the ending number 36 that it changed to. When we enter these numbers into the formula, we get:

((36-12)/12)*100 = 200.00%

there fore you answer is

Answer:

John answered 50 questions.

Step-by-step explanation:

Although five of John's answers were incorrect, 90% of his answers were correct.

This means that 5 is 100 - 90% = 10% of the total number of questions, n. So

[tex]0.1n = 5[/tex]

[tex]n = \frac{5}{0.1}[/tex]

[tex]n = 50[/tex]

John answered 50 questions.

Answer:

Step-by-step explanation:

For |x|=5, x can be either 5 or -5.

For |x|=-5, absolute value cannot be negative, so it is no solutions.

Answer:

2 servings of Gerber Mixed Cereal for Baby and 3 servings of Gerber Mango Tropical Fruit Dessert should be used.

Step-by-step explanation:

Given that Gerber Product's Gerber Mixed Cereal for Baby contains, in each serving, 60 calories and 11 grams of carbohydrates, while Gerber Mango Tropical Fruit Dessert contains, in each serving, 80 calories and 21 grams of carbohydrates, and you want to provide your child with 340 calories and 75 grams of carbohydrates, in order to how many servings of each you should use, the following calculation has to be made:

(80 x 5) + (60 x 0) --- (21 x 5) + (11 x 0) = 400 --- 105

(80 x 4) + (60 x 1) --- (21 x 4) + (11 x 1) = 380 --- 95

(80 x 3) + (60 x 2) --- (21 x 3) + (11 x 2) = 360 --- 85

(80 x 2) + (60 x 3) --- (21 x 2) + (11 x 3) = 340 --- 75

Therefore, 2 servings of Gerber Mixed Cereal for Baby and 3 servings of Gerber Mango Tropical Fruit Dessert should be used.

Step-by-step explanation:

i think True

99% wrong 1% right

Answer:

315

Step-by-step explanation:

180+((75/100)x180)=

180+(3/4 x 180)=

180+135=

315

Answer:

315 inches

Step-by-step explanation:

180 × .75 = 135

2. m < -5

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:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}[/tex]

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:

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

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

In this question:

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

92 fibers means that [tex]N = 92[/tex]

Sample of 10 means that [tex]n = 10[/tex]

No polymeter B which means that [tex]x = 0[/tex]

17 fibers of polymeter B which means that [tex]k = 17[/tex]

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

This is P(X = 0).

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 0) = h(0,92,10,17) = \frac{C_{17,0}*C_{75,10}}{C_{92,10}} = 0.1150[/tex]

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

The probability that the sample does not contain any fibers of polymer B is 0.123

The given parameters are:

n = 92

A = 43

B = 17

C = 32

The probability of selecting a sample that contains polymer B is:

[tex]p = \frac{17}{92}[/tex]

[tex]p = 0.185[/tex]

Using binomial probability, we have:

[tex]P(x) = ^nC_x * p^x *(1 - p)^{n -x}[/tex]

The probability that a selection of 10 fibers do not contain polymer B is then calculated as:

[tex]P(0) = ^{10}C_0 * 0.185^0 *(1 - 0.185)^{10 -0}[/tex]

This gives

[tex]P(0) = 1 * 1 *(0.815)^{10}[/tex]

Evaluate the product

[tex]P(0) = 0.123[/tex]

Hence, the probability that the sample does not contain any fibers of polymer B is 0.123

Read more about probability at:

https://brainly.com/question/25870256

Answer:

hexaedro

ahí esta la respuesta

Answer:

Step-by-step explanation:

The mean of the sampling distribution is equal to the mean of the population. Therefore, we use the standard deviation of the sampling distribution of the means formula. 

                  The standard deviation of the sampling distribution of the means is 2.656. 

With a new population standard deviation of 2.8, the sampling size, n, is 9. 

Answer:

250 milliliters

Step-by-step explanation:

3.5 liters = 3.5 × 1000 milliliters=3500milliliters

3750-3500 = 250 milliliters

Answer:

a) mean =  11.1

b) Standard Deviation = 5.191

Step-by-step explanation:

Given the data in the question;

x = 5.2, 13.8, 8.6, and 16.8

sample n = 4

so;

            x            ( x - mean)²

          5.2             34.81

          13.8            7.29

          8.6             6.25

          16.8            32.49

∑        44.4            80.84

a) Mean

Mean = total sum of the sample divided by the sample size

mean = ∑x / n

we substitute

mean = 44.4 / 4

mean =  11.1

b)

Standard Deviation is the Square root of variance;

Variance = ∑(x-mean)² / n - 1

we substitute from the above table

Variance =  80.81 / 4 - 1

Variance =  80.81 / 3

Variance =  26.94667

now since Standard Deviation is the Square root of variance;

Standard Deviation = √Variance

Standard Deviation = √26.94667

Standard Deviation = 5.191

Answer:

25 nickle and 30 quarters

Step-by-step explanation:

30 time .25 is 7.5 and 25 times .05 is 1.25 so yea thats it

Answer:

25 nickels 30 quarters

Step-by-step explanation:

Answer:

$5350

Step-by-step explanation:

Answer:

Hope this helps :D

Step-by-step explanation:

The simplified form of the given expression is x-z-3.

The given expression is 8z + x -5 - 9z + 2.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

The given expression is written in simplified form is as follows

Group the like terms

8z - 9z + x -5 + 2

= -z+x-3

= x-z-3

Hence, the simplified form of the given expression is x-z-3.

To learn more about an expression visit;

https://brainly.com/question/28170201.

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Answer:

They should interview 1620 adults now.

Step-by-step explanation:

Margin of error of a confidence interval:

The margin of error of a confidence interval has the following format:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which z is related to the confidence level, [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

In this question:

z wont change, neither will [tex]\sigma[/tex]

We want to increase n as such the margin of error is reduced to one third.

We have that the margin of error is inversely proportional to the square root of the size of the sample, which means that for the margin of error to be reduced to one third, the sample size has to be multiplied by [tex]3^2 = 9[/tex]. So

180*9 = 1620

They should interview 1620 adults now.

Answer:

30%

Step-by-step explanation:

Percentage discount

[tex] = \frac{discount}{original \: price} \times 100\% \\ = \frac{5 - 3.50}{5} \times 100\% \\ = 30\%[/tex]

☆ Discount= original price -selling price

Answer:

Least:  14%

Next:  0.15

Next:  1/5

Next:  24%

Greatest:  27/100

Step-by-step explanation:

If you put them all into decimal form they are:

.14, .15, .20, .24, .27

Answer:

8

Step-by-step explanation:

its somethings difficult

Answer:

2029jjajvdjsjsvdghsjsjbs

Answer:

Answer:

Step-by-step explanation:

Thanks for free points!

Answer:

24=5y+3y

8y=24

y=3

x+x+9y+5=90

2x+9(3)+5=90

2x=58

x=29

Step-by-step explanation:

Answer: y=8

Step-by-step explanation:

Answer:

Y = 8

Step-by-step explanation:

Answer:

I dont kn0w try g00gle searches

Answer:

B. M(t)= 5240+240t

Step-by-step explanation:

cause

Answer:

isosceles triangle

Step-by-step explanation: