A bag contains red and blue marbles. In a representative sample of 30 marbles, there are 11 red marbles. If the bag has 180 marties, estimate the number of red marbles and blue marbles in the bag. There are about .............red marbles in the bag. There are about................. blue marbles in the bag.

The conversion of the following units are done below.

Conversion means to convert the same thing into different units.

We know the following unit's conversion.

1 km = 0.62 miles

6 km = 3.72 miles

    1 L = 0.26 gallons

2.5 L = 0.65 gallons

  1 lb = 0.45 kg

90 lb = 40.5 kg

More about the conversion link is given below.

https://brainly.com/question/9414705

#SPJ1

Answer:

1/9

Step-by-step explanation:

Because

P(both socks are white)= 2/18

We will investigate how to use ratios to determine the actual distance between cities as per defined scale.

We are given a scale conversion ( ratio ) at which distances are scaled down:

We will use the given scale ratio to determine the actual distance between two citites. The scale distance between Hawthorne and Doyelstown can be read.

Now utilize the scale conversion ratio to determine the actual distance:

Therefore, the distance between Hawthorne and Doylestown is:

Answer:No

Step-by-step explanation:

No because A was (3,4) and point C was (4,3).

I hope this helps !!

Like terms are terms that have the same variable no matter the coefficient value such as a negative or positive coefficient (number right to left of the variable aka the letter representing an unknown amount of value).

A. 8n : - 4n becuase the have the same variable (N)

B. - 2d: D because they have the same variable and even if d has no coefficient, it still has value, variables with no coefficient always equal 1 no matter the circumstances

C. - b: 17b and -3b2 because they both have the same variable eliminating the coefficients being two different types of numbers (positive and negative). The expressions have to have the same variable.

D: 4y², -3y2,4y, and 4 to the second power. This is because they all have the same variable.

E. 6x2y: 3xy because the variable are specifially xy and they must be in order to be like terms.

abc: all because they have all the letters but are just in different orders of variables. (thats all)

Answer:

B

Using gradient of two points and equation of a straight line graph.

Answer:

  120 customers per hour

Step-by-step explanation:

You want to know the processing rate in customers per hour if there are an average of 6 customers waiting, and the average service time is 3 minutes.

Little's law relates the average queue depth to the response time and the average throughput:

  mean response time = mean number in system / mean throughput

Solving for the throughput, we find ...

  throughput = (number in the system)/(response time)

  throughput = (6 customers)/(3/60 hours) = 120 customers/hour

The average rate of processing is 120 customers per hour.

<95141404393>

To evaluate which of a set of curves fits the data best, you can use the option "c. R2", also known as the coefficient of determination.

R2 is a statistical measure that helps determine the proportion of variance in the dependent variable explained by the independent variable(s) in the regression model. It ranges from 0 to 1, with higher values indicating a better fit of the curve to the data.

To evaluate which of a set of curves fits the data best, we can use the R2 (coefficient of determination) metric. R2 is a statistical measure that represents the proportion of the variance in the dependent variable that is explained by the independent variable(s) in a regression model.

                                         A higher R2 value indicates a better fit of the curve to the data. APE (absolute percentage error), MAPE (mean absolute percentage error), and NPV (net present value) are not appropriate metrics for evaluating the fit of a curve to data. APE and MAPE are typically used to measure forecasting accuracy, while NPV is a financial metric used to determine the present value of future cash flows.

Learn more about coefficient of determination

brainly.com/question/28975079

#SPJ11

Answer:

15 feet

Step-by-step explanation:

Answer:

15 feet

Step-by-step explanation:

Answer:

False.

Step-by-step explanation:

0.297x7.1=2.1087

2.1087+20790= 20792.1087

A large sample size of 15 is necessary if the width of the 95% interval is to be 0.40

Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a study is usually determined based on the cost, time, or convenience of collecting the data, and the need for it to offer sufficient statistical power. In complicated studies there may be several different sample sizes.

Sample sizes may be chosen in several ways:

Given in the question:

A sample size of n is needed.

n is found when M = 0.4.

95% Central interval

Z = 1.96

  M = z × σ /√n

⇒ 0.40 = 1.96 × 0.75 /√n

⇒ 0.40√n = 1.96 ×0.75

⇒ √n = 1.96 ×0.75/0.40

⇒ (√n)² = (1.96 ×0.75 / 0.40 )²

⇒ n = 14.6

Rounding up 14.6

n = 15

The sample size of 15 is needed.

Thus, A large sample size of 15 is necessary if the width of the 95% interval is to be 0.40

Learn more about Sample Size:

https://brainly.com/question/25894237

#SPJ4

Answer:

A = 540 m²

Step-by-step explanation:

consider the shape split into 3 rectangles

the length is divided into 3 congruent sections

single dash = 30 m ÷ 3 = 10 m

the width is divided into 3 congruent sections

double dash = 27 m ÷ 3 = 9 m

then area (A) is the total of the 3 rectangular areas

A of left rectangle = 10 × 9 = 90 m²

A of middle rectangle = 10 × (9 + 9) = 10 × 18 = 180 m²

A of right rectangle = 10 × 27 = 270 m²

total area = 90 + 180 + 270 = 540 m²

Answer:

OOOOOOOOHHH SHUTE BROTHER SORRY WISHED I COULD HELP but im blonde so sowwy

Answer:

\(x = - 23\)

Step-by-step explanation:

\( \frac{20 - (40 + x)}{12} \times 10 = 32.5 - 30 = 2.5\)

\( = > \frac{20 - (40 + x)}{12} = 0.25\)

\( = > \frac{20 - (40 + x)}{12} = \frac{1}{4} \)

\( = > 20 - (40 + x) = \frac{12}{4} = 3\)

\( = > 40 + x = 20 - 3 = 17\)

\( = > x = 17 - 40 = - 23\)

We can say with 90% confidence that the true mean GPA of all accounting students at this university lies between 2.7107 and 3.0493.

We are given:

Sample size n = 21

Sample mean X = 2.88

Sample standard deviation s = 0.16

Confidence level = 90% or α = 0.10 (since α = 1 - confidence level)

Since the sample size is small and population standard deviation is unknown, we will use a t-distribution to construct the confidence interval.

The formula for the confidence interval is given by:

X ± t(α/2, n-1) * s/√n

where t(α/2, n-1) is the t-score with (n-1) degrees of freedom, corresponding to the upper α/2 percentage point of the t-distribution.

Using a t-table with (n-1) = 20 degrees of freedom and α/2 = 0.05, we find the t-score to be 1.725.

Plugging in the values, we get:

2.88 ± 1.725 * 0.16/√21

= (2.7107, 3.0493)

Therefore, we can say with 90% confidence that the true mean GPA of all accounting students at this university lies between 2.7107 and 3.0493.

Note: The confidence interval can also be written as [2.71, 3.05] rounding to two decimal places.

To learn more about Sample mean visit: https://brainly.com/question/31101410

#SPJ11

The domain and range are

1. the domain is (-∞, +∞). and range of h(x) is [3, +∞)

2. the domain is (-∞, +∞). and the range of g(x) is (-∞, +∞)

3. the domain is (-∞, +∞). and range of g(x) is [0, +∞)

For the function h(x) = |x + 5| + 3:

Domain: The function h(x) can accept any real number as input since there are no restrictions on the value of x. Therefore, the domain is (-∞, +∞).

Range: The absolute value function |x + 5| always results in a non-negative value. Adding 3 to a non-negative value will also yield a non-negative value. Hence, the range of h(x) is [3, +∞).

For the function g(x) = -2x - 10:

Domain: The function g(x) can accept any real number as input since there are no restrictions on the value of x. Therefore, the domain is (-∞, +∞).

Range: The function g(x) is a linear equation with a negative slope (-2). As x increases, the value of -2x decreases. Thus, the range of g(x) is (-∞, +∞).

For the function g(x) = 7x²:

Domain: The function g(x) can accept any real number as input since there are no restrictions on the value of x. Therefore, the domain is (-∞, +∞).

Range: The function g(x) is a quadratic function with a coefficient of 7 in front of x². Since the coefficient is positive, the parabolic graph opens upwards. Hence, the range of g(x) is [0, +∞). The function can achieve any non-negative value or zero, but it does not reach negative values.

Learn more about domain and range at

https://brainly.com/question/26098895

#SPJ1

Generally, Spanish is a Romance language that originated in the Iberian Peninsula. It is the second most spoken language in the world by number of native speakers and is widely used as a second language in many countries. Spanish is an official language in Spain and 21 other countries, including Mexico, Central America, South America, and the Caribbean. It is a major global language and has a rich cultural heritage, with a long literary tradition and a vibrant contemporary literary scene. Spanish is also an important language for international business and communication.

Read more about Spanish

https://brainly.com/question/2011765

#SPJ1

Answer:

D. BC = 12cm, <B = 45, AC = 12cm

Step-by-step explanation:

Edge 2021

The measures of the lengths and angles are: BC = 12cm, <B = 45, AC = 12cm

A right triangle is a triangle that has one of its angle measure to be 90 degrees.

From the question, we have:

Angle B = 45 degrees

Since angle B is 45 degrees, then the legs of the triangle are equal (i.e. 12 cm)

Hence, the measures of the lengths and angles are: BC = 12cm, <B = 45, AC = 12cm

Read more about right triangles at:

brainly.com/question/2437195

The surface area of the surface generated when the given curve is revolved about the given axis is 41π√5/2 square units.


Surface area = ∫2πyds
Where y is the function, and ds is the arc length.

The function is y = 2x - 3, and we are integrating with respect to y, so we get,
y = 2x - 3
x = (y + 3)/2

Now we can find the arc length, ds, using the formula ds = √(1 + (dy/dx)²)dx:
ds = √(1 + (dy/dx)²)dx
ds = √(1 + (1/2)²)dx

ds = (1/2)√5 dx

Substituting x = (y + 3)/2 and ds = (1/2)√5 dx into the formula for surface area:
Surface area = ∫2πyds
Surface area = ∫2π((y + 3)/2)((1/2)√5 dx)
Surface area = ∫π(y + 3)√5 dx/2


Now we can use the limits of integration given in the question, 4 < x < 7, to find the surface area:
Surface area = ∫[4,7]π(y + 3)√5 dx/2
Surface area = (π√5/2)∫[4,7](y + 3)dx
Surface area = (π√5/2)(49 - 8)
Surface area = (π√5/2)(41)
Surface area = 41π√5/2 square units


Therefore, the surface area of the surface is 41π√5/2 square units.

Know more about surface area here:

https://brainly.com/question/16519513

#SPJ11

Answer:

14

Step-by-step explanation:

The a value is from the center to the maximum

We want from minimum to max so we need 2 times the amplitude

a = 7

2 *7 = 14

Answer:

The angle of that is 90°

Answer:

if i am right it 260

Step-by-step explanation:

Answer:

Below

Step-by-step explanation:

As I posted ....looks to be 147°

The total number of tasks Terrence completed. By substituting the value of 'x' with the number of tasks Terrence completed

The factor 'x' in the expression '90x - 20' represents the total number of tasks that Terrence completed in the game.

To understand why, let's break down the given information. It states that Shelly and Terrence completed a different number of tasks. Shelly earned 90 points on each task, so the total number of tasks she completed is not represented by 'x'.

On the other hand, Terrence's total points were 20 less than Shelly's total. This means that Terrence's total points can be calculated by subtracting 20 from Shelly's total points. Since Shelly earned 90 points on each task, her total points would be 90 multiplied by the number of tasks she completed.

So, the expression '90x - 20' represents Terrence's total points in the game, where 'x' represents the total number of tasks that Terrence completed. By substituting the value of 'x' with the number of tasks Terrence completed, we can calculate his total points.

Therefore, the correct answer is: The total number of tasks Terrence completed.

for more such question on substituting visit

https://brainly.com/question/22340165

#SPJ8

Answer:

-9,3

Step-by-step explanation:

The range of the function is {3, 7, -9}.

A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, co-domain, and domain.

Given:

A function of x containing three ordered pairs of the form (x, y) is shown below. {(1, 3), (2, 7), (3, -9)}.

The range of the function is,

= the number of value in the y-coordinate.

= {3, 7, -9}

Therefore, {3, 7, -9} is the range.

To learn more about the function;

brainly.com/question/28303908

#SPJ2

Answer:

10 popcorn orders

Step-by-step explanation:

\(10 + 4.55 x = 8 + 4.75x \\ 4.55x - 4.75x = 8 - 10 \\ - 0.2x = 8 - 10 \\ - 0.2x = - 2 \\ x = \frac{ - 2}{ - 0.2} \\ x = 10\)

Answer:

EH is 25

Step-by-step explanation:

7+7+11=25

EH is 25

Answer:

Step-by-step explanation: