what is associative, commutative and identity property​

Answer:

just answer everything joe is answering

Step-by-step explanation:

Answer:

x = 12, -2

Step-by-step explanation:

subtract 24 from both sides then use quadratic formula

Answers:

The new volume is 1/8 of the old volume

The new surface area is 1/4 of the old surface area

======================================================

Explanation:

Volume:

Let's say the diameter is d = 60

That would make the radius r = d/2 = 60/2 = 30

The volume of the sphere is

V = (4/3)pi*r^3

V = (4/3)*pi*(30)^3

V = (4/3)*(30)^3*pi

V = 36000*pi

Now consider that d = 30 which is half of the original diameter.

So r = d/2 = 30/2 = 15

And also,

V = (4/3)pi*r^3

V = (4/3)*pi*(15)^3

V = (4/3)*(15)^3*pi

V = 4500*pi

The old volume was 36000pi and the new volume is 4500pi

Comparing the two volumes, we see that the reduction factor is

(new volume)/(old volume) = (4500pi)/(36000pi) = 1/8

The new volume is 1/8 of the old volume

smaller volume = (1/8)*(larger volume)

This is equivalent to saying the larger volume is 8 times that of the smaller volume.

------------------------------------------------------

Surface Area:

We'll use the same d and r values from earlier.

The diameter d = 60 leads to r = 30. We'll use this to find the surface area

SA = 4pi*r^2

SA = 4*pi*30^2

SA = 3600pi

For the smaller sphere (d = 30 and r = 15), we have

SA = 4pi*r^2

SA = 4*pi*15^2

SA = 900pi

The reduction factor is (900pi)/(3600pi) = 1/4

The smaller sphere has its surface area 1/4 that of the larger sphere.

smaller surface area= (1/4)*(larger surface area)

This is equivalent to saying the larger surface area is 4 times that of the smaller surface area.

The negative correlation coefficient of -0.73 between consumption of vitamin A and the cancer rate of a particular type of cancer suggests that as vitamin A consumption increases, the cancer rate tends to decrease.

A correlation coefficient measures the strength and direction of the linear relationship between two variables.

In this case, a correlation coefficient of -0.73 indicates a negative correlation between consumption of vitamin A and the cancer rate.

Interpreting this correlation, it can be inferred that there is an inverse relationship between the two variables. As consumption of vitamin A increases, the cancer rate tends to decrease.

However, it is important to note that correlation does not imply causation.

It would be incorrect to conclude that consuming more vitamin A causes this type of cancer. Correlation does not provide information about the direction of causality.

Other factors and confounding variables may be involved in the relationship between vitamin A consumption and cancer rate.

To establish a causal relationship, further research, such as experimental studies or controlled trials, would be necessary. These types of studies can help determine whether there is a causal link between vitamin A consumption and the occurrence of this particular cancer.

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Answer:

Step-by-step explanation:

The general environment in the craft beer market is dynamic and highly competitive. The industry environment is characterized by factors such as consumer preferences, regulatory frameworks, technological advancements, and market trends. These factors directly influence a firm's competitive actions and responses.

The power of suppliers in the craft beer market can have a significant impact on a firm's operations. Suppliers of raw materials, such as hops and barley, can exert power through pricing, availability, and quality control. Craft breweries often strive to establish strong relationships with suppliers to ensure a steady and reliable source of high-quality ingredients.

The power of buyers also plays a crucial role in shaping the craft beer industry. Consumers have access to a wide range of craft beer options, which gives them the power to influence pricing and demand. Craft breweries need to understand and cater to consumer preferences to maintain a competitive edge and build customer loyalty.

The intensity of rivalry among competing firms in the craft beer market is high. Craft breweries face fierce competition from both established players and new entrants. Factors such as product differentiation, brand recognition, distribution networks, and pricing strategies contribute to the level of rivalry. Craft breweries must continually innovate and differentiate their offerings to stand out in this competitive landscape.

As for the growth stage of the craft beer industry, it is currently in the maturity stage. Over the years, the craft beer market has experienced significant growth, attracting numerous players and saturating the market to some extent. However, there is still room for further growth and expansion, especially in emerging markets and through product innovation. Craft breweries continue to adapt and evolve to meet changing consumer preferences and seize new opportunities.

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Answer:

Proportion says that two ratios (or fractions) are equal.

La proporción dice que dos razones (o fracciones) son iguales.

( translated )

Answer:

For 1 cup of  pineapple 1 .5  cups of strawberries are used.

Step-by-step explanation:

This question can be solved by using ratios

Strawberry       :      Pineapple

1     cup              :          2/3 cup

x cup                  ;            1 cup

Using the cross product rule

2/3 * x= 1*1

x= 1*1 ÷ 2/3

x= 1*3/2= 1 1/2= 1.5

For 2 cups of pineapple 3 cups of strawberries are used.

For 1 cup of  pineapple 1 .5  cups of strawberries are used.

For 3 cups of pineapple 4.5 cups of strawberries are used.

Answer:

Step-by-step explanation:

To solve this question we use ratio and proportion

From the question

1 hour = $11.90

Then 7.75 hours =

\( \frac{7.75 \times 11.9}{1} = 92.225\)

We have the final answer as

Hope this helps you

5/7 as a decimal rounded to 3 decimal places is 0.714.

Convert 5/7 to decimal.

Step 1: In the given fraction 5/7, consider the numerator 5 as a dividend and the denominator 7 as the divisor. In this case, the denominator > numerator.

Step 2: We have to make the dividend digit (5) greater than the divisor digit (7) by placing 0 next to 5 and to the quotient respectively. Now we have 50 as a new dividend. (50>7)

Step 3: In the quotient part, it is important to insert decimal (.) after 0 and start the division.

Step 4: Multiply 7 with a number so that the product is less than or equal to 50. We know that 7 times 7 is 49. The digit that appeared in the quotient is 7, and the remainder left is 1. After introducing decimal in the quotient we can introduce one 0 at each step of division.

Step 5: Now the new dividend is 10. Multiply 7 with a number so that the product is less than or equal to 10. 7 times 1 is 7. Now the new digit in the quotient is 1 which makes it 0.71, and the remainder is 3.

Step 6: Now the new dividend is 30. Multiply 7 with a number so that the product is less than or equal to 30. 7 times 4 is 28. Now the new digit in the quotient is 1 which makes it 0.714.

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Seraphina's speed has increased by a factor of around 23% compared to the first hour.

What Is a Change in Percentage?

The ratio of the difference in the amount to its starting value multiplied by 100 is known as the percentage change. When a number's final value is determined by increasing or decreasing a percentage of its starting value, the percentage change of that quantity will always change.

How can you determine the percentage to the closest tenth?

Rounding to the closest tenth entails adding one integer after the decimal point. The number in the thousandths place, or the second number from the right of the decimal, must be considered while rounding. If the amount is five or more, we add one percent to the number in the tenth position.

Percent Change Formula = \(\frac{ (Final value -Initial value)}{ (Initial value)}\)× 100

Percent Change               = \(\frac{(74-60)}{60}\)× 100

…                                     = \(\frac{14}{60}\) × 100

...                                     ≈ 0.23333 × 100

Percent Change             ≈ 23.33%

The pace of Seraphina increased by around 23% in the second hour compared to the first.

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Answer:4/5

Step-by-step explanation:

Probability of getting greater than 1 (there are 4 possibilities for this)

5 total outcomes, so 4/5

Answer:

Step-by-step explanation:

Yes, due to the presence of that operator " i "

Answer:

10

Step-by-step explanation:

The probability that one player gets all aces is 0.0467

From the question, we have the following parameters that can be used in our computation:

Cards, n = 52

Players, r = 4

The 52 cards can be shared to the the 4 players in C(n + r - 1, r - 1) ways

So, we have

C(52 + 4 - 1, 4 - 1) = C(55, 3)

When evaluated, we have

C(52 + 4 - 1, 4 - 1) = 26235

Next:

The remaining 48 cards can be shared to the other 3 players in C(n + r - 1, r - 1) ways

C(48 + 3 - 1, 3 - 1) = C(50, 2)

C(48 + 3 - 1, 3 - 1) = 1225

So, we have

P = 1225/26235

Evaluate

P = 0.0467

Hence, the probability is 0.0467

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Answer:

15)

Step-by-step explanation:

i think its that since im guessing that x5 is the length of each side and since triangles have 3 sides so i did 5 x 3 which equals 15

Answer:y>2x+1 and x+y<-2

Step-by-step explanation: Plot those two lines and they should appear the same as the graph, with the area to the left of (-1,-1) and between the lines greyed out.

D box plot correctly represents the data

A box plot or boxplot is a technique for illustratively displaying the localization, dispersion, and skewness groups of numerical data through their quartiles.

Using a five-number summary (the minimum, first quartile (Q1), median, third quartile (Q3), and "maximum"), a boxplot is a common method of visualizing data distribution.

The median value for the provided data will be the sixth data point's value, or 3.

The median of the data's lower half is now the first quartile. The third data point's value of 1 will therefore be in the lower quartile.

The median of the data's upper half is now referred to as the upper or third quartile. This means that the value of the ninth data point, which is 6, will represent the upper quartile.

Thus, box-plot D effectively displays the data from above.

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Answer:

The answer is D.

Edg 2023.

The equation wxy = Wyx is not valid. The correct answer is B. Wxy ≠ Wyx.

Given w = ln(8x + 9y), we need to determine if wxy is equal to Wyx. To find wxy, we differentiate w with respect to x and then with respect to y, while for Wyx, we differentiate w with respect to y and then with respect to x.

Differentiating w = ln(8x + 9y) with respect to x, we get:

dw/dx = 8/(8x + 9y)

Next, differentiating dw/dx with respect to y, we get:

d²w/dxdy = -72/(8x + 9y)²

Now, differentiating w = ln(8x + 9y) with respect to y, we get:

dw/dy = 9/(8x + 9y)

Next, differentiating dw/dy with respect to x, we get:

d²w/dydx = -72/(8x + 9y)²

Comparing the two second-order mixed partial derivatives, we have d²w/dxdy = d²w/dydx. Therefore, we can conclude that wxy = Wyx, or in other words, the mixed partial derivatives are equal. Thus, the correct answer is B. Wxy = Wyx.

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Answer:

fourth degree.

trinomial

Step-by-step explanation:

Answer:

fourth degree.

trinomial

Step-by-step explanation:

The measure of m<LKT from the figure is 35 degrees

Line tangential to a circle is at 90 degrees to the circle.

Given the following parameter

m<TLK = 55 degrees

According to the theorem above:

m<TLK + m<LKT = 90

m<LKT = 90- m<TLK
m<LKT = 90 -55

m<LKT  = 35 degrees

Hence the measure of m<LKT from the figure is 35 degrees

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Answer:

11) D. 144 b/m

12) B. As exercise levels increase, heart rate increases

13) D. Transporting wastes away from cells

14) B. Capillaries

15) This is because during excercise you increase the skin blood flow in order to enable ¨heat dissipation¨. Then after the increase in blood flow to the muscles decides to have an increase which causes it to have a cardiac output which is in direct proportion to the increase in oxygen consumption.

Step-by-step explanation:

Answer:

Overtime hours = [h - 40] hours

Step-by-step explanation:

Given:

Weekly hour work = 40 hours per week

Total hour work = h hours

Find:

Overtime hours

Computation:

Overtime hours = Total hour work - Weekly hour work

Overtime hours = [h - 40] hours

Answer:

Step-by-step explanation:

-5 (-2) = 10

A parameterization of curves in the xy-plane requires us to provide a function in terms of a parameter θ, which is usually the angle associated with a point on the curve. The parameters need to be adjusted according to the size and center of the curve, as well as the direction of tracing.

A circle is a two-dimensional shape representing a round, enclosed area with a curved line, or perimeter, usually drawn with a pencil or pen. A circle has no beginning or end and is composed of a single line that forms a continuous loop. A circle is often referred to as a round shape, though its shape is technically an ellipse. A circle's area is determined by its radius, which is the distance from the center of the circle to its perimeter. The circumference of a circle is the total length of its perimeter. Circles are found everywhere in nature and have been used in various forms of art and design throughout history.

1. A circle of radius 3 centered at the origin and traced out clockwise:
x = 3cosθ, y = 3sinθ, where 0 ≤ θ ≤ 2π.

2. A circle of radius 5 centered at the point (2, 1) and traced out counterclockwise:
x = 2 + 5cosθ, y = 1 + 5sinθ, where 2π ≤ θ ≤ 0.

In conclusion, a parameterization of curves in the xy-plane requires us to provide a function in terms of a parameter θ, which is usually the angle associated with a point on the curve. The parameters need to be adjusted according to the size and center of the curve, as well as the direction of tracing.

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Confidence interval = (y ± t∗s/√n)g1 = y - t*s/√ng2 = y + t*s/√n Substituting the values, g1 = 26.22 - 1.860*(0.11)/√9 = 25.84g2 = 26.22 + 1.860*(0.11)/√9 = 26.59Therefore, the statistics g1 and g2 that will satisfy the required inequality are 25.84 and 26.59 respectively.

The formula for finding the confidence interval is as follows: n − 1, where t is the value of the t-distribution corresponding to the specified confidence level and the sample size minus one.

As per the given exercise 7.11, suppose that in the forest fertilization problem the population standard deviation of basal areas is not known and must be estimated from the sample.

If a random sample of n = 9 basal areas is to be measured, find two statistics g1 and g2 such that p(g1 ≤ (y - u) ≤ g2) = 90

To find the statistics g1 and g2 that will satisfy the required inequality

the following formula can be used: Confidence interval = \((y ± t∗s/√n)\)

From the formula, we can see that the confidence interval depends on the values of y, s, t and n.

The value of y is the sample mean

the value of s is the sample standard deviation

And the value of n is the sample size.

The value of t depends on the confidence level desired and the degrees of freedom for the t-distribution. In this case, the confidence level is 90%, which means that we want to find the value of t that will give us a total area of 0.90 under the t-distribution curve with 8 degrees of freedom .Using the t-table, the value of t can be found to be 1.860, where the value for 90% and 8 degrees of freedom is 1.860.t = 1.860Now, we need to calculate the value of s, which is the sample standard deviation.

Since we do not have any information about the population standard deviation, we will use the sample standard deviation as an estimate of the population standard deviations = σ/√nσ = s*√nσ = 0.11*√9σ = 0.33Substituting the values in the confidence interval formula

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Answer:

See below.

Step-by-step explanation:

Let the price of drinks be x and the price of candies be y.

9x + 4y = 60 --------------------(1)

10x + 2y = 57.50 --------------(2)

2(10x + 2y) = 57.50*2

20x + 4y = 115 --------------(3)

9x + 4y - 20x - 4y = 60 - 115

9x - 20x = -55

-11x = -55

11x = 55

x = 55/11

Put x = 5 in Eq. (1)

9(5) + 4y = 60

45 + 4y = 60

4y = 60 - 45

4y = 15

y = 15/4

So, the cost of one drink is $5 and the cost of one candy is $3.75.

\(\rule[225]{225}{2}\)

Based on the information provided in your question, the appropriate answer is:
O Six seasonal dummy variables and a time variable

This is because the time series plot indicates a linear trend and a daily seasonal pattern.

In multiple regression analysis, the independent variables would include:
Six seasonal dummy variables (since there are daily patterns, you would need one dummy variable for each day of the week, except one day, which will serve as the reference category).

This accounts for the daily seasonal pattern.
A time variable (to account for the linear trend).

O Six seasonal dummy variables and a time variable.

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In both cases, the triangle inequality theorem is used to justify the steps, which guarantees the validity of the inequalities.

|a + b| ≤ |a| + |b|

(a) Proving |x| < ε + |c|:

Given: |x - c| < ε

Adding |c| to both sides of the inequality, we have:

|x - c| + |c| < ε + |c|

Applying the triangle inequality to the left side of the inequality, we get:

|x - c + c| < ε + |c|

Simplifying the expression inside the absolute value, we have:

|x| < ε + |c|

Thus, we have proved that |x| < ε + |c|.

(b) Proving |c| - ε < |x|:

Given: |x - c| < ε

Subtracting |c| from both sides of the inequality, we have:

|x - c| - |c| < ε - |c|

Applying the triangle inequality to the left side of the inequality, we get:

|x - c - c| < ε - |c|

Simplifying the expression inside the absolute value, we have:

|x - 2c| < ε - |c|

Adding 2|c| to both sides of the inequality, we get:

|x - 2c| + 2|c| < ε - |c| + 2|c|

Applying the triangle inequality to the left side of the inequality, we have:

|x - 2c + 2c| < ε - |c| + 2|c|

Simplifying the expression inside the absolute value, we have:

|x| < ε + |c|

Rearranging the inequality, we get:

|c| - ε < |x|

Thus, we have proved that |c| - ε < |x|.

In both cases, the triangle inequality theorem is used to justify the steps, which guarantees the validity of the inequalities.

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Answer:

x = 10

Step-by-step explanation:

We would use postulates and theorem to figure out 34 = 3x + 4. Once you set 34 equal to 3x + 4, you would solve for x as can be shown below:

34 = 3x + 4

Subtract 4 from both sides.

30 = 3x

Divide both sides by 3.

10 = x

Answer:

10

Step-by-step explanation:

(3x + 4)° = 34°

x = 10