A box has the shape of a rectangular prism with height 30 cm. If the height is increased by 0.2 ​cm, by how much does the surface area of the box​ increase?

The researcher calculated a p-value of 0.0499, which is typically compared to a significance level (commonly 0.05). The appropriate conclusion is option 2: The average difference in blood pressure is significantly larger than 0. The blood pressure of patients is higher after the procedure.

Based on the given null and alternative hypotheses, the researcher is testing for a one-tailed, upper-tailed hypothesis. A p-value of 0.0499 suggests that there is a 4.99% probability of obtaining the observed difference in blood pressure (or a larger one) under the assumption that the null hypothesis is true.

Since the p-value is less than the commonly used alpha level of 0.05, we can reject the null hypothesis and conclude that the average difference in blood pressure is significantly larger than 0. Therefore, option 2 is the appropriate conclusion: "The average difference in blood pressure is significantly larger than 0. The blood pressure of patients is higher after the procedure."

It is important to note that statistical significance does not necessarily imply clinical significance. The researcher should interpret the results in the context of the study and the magnitude of the observed difference in blood pressure. It may also be useful to consider other factors that could influence blood pressure, such as medication use or lifestyle changes.

The medical researcher conducted a study to examine the relationship between blood pressure before and after a procedure. The null hypothesis (μD ≤ 0) states that there is no significant difference in blood pressure after the procedure, while the alternative hypothesis (μD > 0) claims that blood pressure is significantly greater after the procedure.

The researcher calculated a p-value of 0.0499, which is typically compared to a significance level (commonly 0.05). Since the p-value is less than the significance level, we reject the null hypothesis in favor of the alternative hypothesis.

The appropriate conclusion is option 2: The average difference in blood pressure is significantly larger than 0. The blood pressure of patients is higher after the procedure. This indicates that there is enough evidence to suggest that the procedure has an impact on increasing blood pressure in the sample of patients.

To learn more about p-value, click here:

brainly.com/question/30182084

#SPJ11

The example given is an example of empirical probability.

Empirical probability, also known as experimental probability, is based on observed data or past experiences. In this case, the homeowner has been noting the arrival time of the newspaper for seven days and has observed that it arrives before 5 pm on five out of those seven days.

Based on this observation, the homeowner concludes that the probability of the newspaper arriving before 5 pm tomorrow is about 71%. This conclusion is based on the homeowner's empirical observation of the newspaper's arrival times in the past, rather than a theoretical calculation or mathematical model.

Therefore, the example given is an example of empirical probability.

To learn more about empirical probability here:

brainly.com/question/1452877#

#SPJ11

The sequence {an} = {4/n²} is both monotonic and bounded.

The sequence {an} = {3n³/n²+1} is monotonic but not bounded. The sequence {an} = {2(-1)ⁿ+1} is neither monotonic nor bounded.


For the sequence {an} = {4/n²}, as n increases, the terms decrease, so it's monotonic. Since 4/n² is always positive and approaches 0, it's bounded between 0 and 4.

For the sequence {an} = {3n³/n²+1}, as n increases, the terms also increase, making it monotonic. However, there is no upper bound as the terms can grow indefinitely.

For the sequence {an} = {2(-1)ⁿ+1}, the terms alternate between positive and negative values, making it non-monotonic. It also doesn't have an upper or lower bound, so it's not bounded.

To know more about monotonic click on below link:

https://brainly.com/question/27217219#

#SPJ11

Rounding to 3 decimal places, the primary root of (4-3i)^(1/5) is approximately:

(4-3i)^(1/5) = 1.380(cos(-0.129) + i sin(-0.129))

To find the primary root of the complex number (4-3i)^(1/5), we can use the polar form of complex numbers.

First, we need to find the modulus (or absolute value) and the argument (or angle) of the complex number (4-3i):

|4-3i| = sqrt(4^2 + (-3)^2) = 5

Arg(4-3i) = arctan(-3/4) = -0.6435 (rounded to 4 decimal places)

Next, we can write the complex number (4-3i) in polar form as:

4-3i = 5(cos(-0.6435) + i sin(-0.6435))

To find the primary root, we need to take the fifth root of the modulus and divide the argument by 5:

|4-3i|^(1/5) = 5^(1/5) = 1.3797 (rounded to 4 decimal places)

Arg(4-3i) / 5 = -0.1287 (rounded to 4 decimal places)

Finally, we can write the primary root in rectangular form by multiplying the modulus by the cosine of the argument divided by 5 for the real part and multiplying the modulus by the sine of the argument divided by 5 for the imaginary part:

(4-3i)^(1/5) = 1.3797(cos(-0.1287) + i sin(-0.1287))

Rounding to 3 decimal places, the primary root of (4-3i)^(1/5) is approximately:

(4-3i)^(1/5) = 1.380(cos(-0.129) + i sin(-0.129))

Learn more about root below.

https://brainly.com/question/3617398

#SPJ1

The indefinite integral of the function f(x) = 3x + 2 is (3x²/2) + 2x + C, where C is the constant of integration.

An indefinite integral is denoted by ∫ f(x)dx, where f(x) is the function that you want to integrate and dx represents the differential of the independent variable x.

Given the function f(x) = 3x + 2, we need to find its indefinite integral.

∫f(x)dx = ∫(3x + 2)dx

To integrate this function, we need to use the power rule of integration. The power rule of integration states that if f(x) = xn, then ∫f(x)dx = (xⁿ⁺¹)/(n+1) + C, where C is the constant of integration.

Let's apply this rule to integrate the function f(x) = 3x + 2:

∫(3x + 2)dx = (3x¹⁺¹)/(1+1) + 2x + C

= (3x²/2) + 2x + C

Now, we need to find the indefinite integral of the sum of two identical functions, which is given by:

∫f(x)dx + ∫f(x)dx = 2∫f(x)dx

Therefore,

∫f(x)dx + ∫f(x)dx = (3x²/2) + 2x + C + (3x²/2) + 2x + C

= 3x² + 4x + 2C

So, the indefinite integral of f(x) + f(x) is 3x² + 4x + 2C.

To know more about integral here

https://brainly.com/question/18125359

#SPJ4

Complete Question:

Find the indefinite integral  ∫f(x)dx + ∫ f(x)dx =

Where f(x) = 3x + 2

The amount of money required to fund the endowment if the rate of interest is compounded continuously, is $2911.

When the interest is compounded continuously,

A = P e^(rt)

Here r is the rate of interest, A is the final amount, P is the principal amount and t is the number of years.

Here, t = 1

A = 3000

r = 3% = 0.03

Substituting,

3000 = P e^(0.03)

P = 3000 / e^(0.03)

P = $2911.34 ≈ $2911

Hence the amount of money required to fund the endowment is $2911.

Learn more about Compound Interest here :

https://brainly.com/question/15407448

#SPJ4

If you studied for 30 minutes, you could predict your test score to be 83.

What is the equation of the line?

A linear equation is an algebraic equation of the form y=mx+b. where m is the slope and b is the y-intercept.

Using the given equation of the line of best fit, we can predict the test score for 30 minutes of studying:

y = 1.1x + 50

y = 1.1(30) + 50

y = 33 + 50

y = 83

Therefore, if you studied for 30 minutes, you could predict your test score to be 83.

To learn more about the equation of the line visit:

https://brainly.com/question/18831322

#SPJ1

Required correct statement is the sales of cars in April is misleading because the scale on the vertical axis begins at 244. This exaggerates the sales differences between the years. Someone might believe that the sales of cars increased dramatically between 2004 and 2006, but the difference is only 10 cars.

Here the graph is misleading because of the scales on both the horizontal and vertical axes. The starting point of 244 on both axes exaggerates the differences between the sales figures for each year. As a result, someone might believe that there was a dramatic increase or decrease in car sales between 2004 and 2006 when in reality, the difference was only a few cars. This shows the importance of using appropriate scales on graphs to accurately represent data.

Therefore,

The graph showing the sales of cars in April is misleading because the scale on the vertical axis begins at 244. This exaggerates the sales differences between the years. Someone might believe that the sales of cars increased dramatically between 2004 and 2006, but the difference is only 10 cars.

Learn more about the graph here,

https://brainly.com/question/28279103

#SPJ1

The probability that Declan will arrive first and Danielle will arrive last is 1/30.

First, let's find the total number of ways the six friends can randomly arrive at the party. Since there are 6 friends, there are 6 (six factorial) ways for them to arrive, which can be calculated as follows:

6! = 6 × 5 × 4 × 3 × 2 × 1 = 720 ways

Now, let's find the number of ways in which Declan can arrive first and Danielle last. In this case, 4 remaining friends (Jose, Tanisha, Abe, and Andrew) can arrive between Declan and Danielle. So, there are four (four factorial) ways for the remaining friends to arrive:

4! = 4 × 3 × 2 × 1 = 24 ways

To find the probability that Declan will arrive first and Danielle will arrive last, we need to divide the number of ways Declan can arrive first and Danielle last by the total number of ways they can all arrive:

Probability = (Number of ways Declan first and Danielle last) / (Total number of ways)
Probability = 24 / 720 = 1/30

So, the probability that Declan will arrive first and Danielle will arrive last is 1/30.

visit here to learn more about probability:

brainly.com/question/30034780

#SPJ11

To answer your question, I'll provide the necessary Excel formulas for t-value, margin of error, and upper and lower bound confidence intervals, based on the information provided about the Sweet Feed Company and their lizard food bags.

Assuming you have the data of the 2 weighed bags in cells A1 and A2, and the desired level of confidence (for example, 95%) in cell B1, you can use the following formulas:

1. t-value: In cell C1, type `=T.INV(1-B1,1)` and press Enter. This will calculate the t-value for the given level of confidence.

2. Margin of error: In cell C2, type `=C1*STDEV.S(A1:A2)/SQRT(2)` and press Enter. This will calculate the margin of error without using the confidence level directly.

3. Upper bound confidence interval: In cell C3, type `=AVERAGE(A1:A2)+C2` and press Enter. This will calculate the upper bound of the confidence interval.

4. Lower bound confidence interval: In cell C4, type `=AVERAGE(A1:A2)-C2` and press Enter. This will calculate the lower bound of the confidence interval.

Know more about margin of error here:

https://brainly.com/question/29101642

#SPJ11

The probability model is as follows:
Never: 0.0262
Rarely: 0.0679
Sometimes: 0.1156
Most of the time: 0.2633
Always: 0.5271

To construct a probability model for seatbelt use by a passenger, first calculate the total number of responses in the survey:

Total responses = 125 (Never) + 324 (Rarely) + 552 (Sometimes) + 1257 (Most of the time) + 2518 (Always) = 4776

Now, find the probability for each response by dividing the frequency of each response by the total number of responses:

P(Never) = 125 / 4776 = 0.0262
P(Rarely) = 324 / 4776 = 0.0679
P(Sometimes) = 552 / 4776 = 0.1156
P(Most of the time) = 1257 / 4776 = 0.2633
P(Always) = 2518 / 4776 = 0.5271


Considering that the probability of a college student never wearing a seatbelt when riding in a car driven by someone else is only 0.0262, or 2.62%, it can be considered unusual. This low probability indicates that the majority of college students wear seatbelts at least some of the time, making those who never wear them an exception to the general behavior.

Know more about probability model here:

https://brainly.com/question/31142424

#SPJ11

The type I error for the hypothesis test in this scenario would be rejecting the null hypothesis, which states that the average attendance at games is not over 67,000, when it is actually true.

In hypothesis testing, a type I error, also known as a false positive, occurs when the null hypothesis is incorrectly rejected, and a significant result is obtained even though the null hypothesis is actually true. In this case, the null hypothesis would state that the average attendance at games is not over 67,000, meaning the owner's claim is not supported.

However, if the null hypothesis is rejected based on the sample data, and the owner decides to move the team to a city with a larger stadium based on this result, it would be a type I error if the actual average attendance is indeed not over 67,000. This would mean that the owner made a decision to move the team based on an incorrect rejection of the null hypothesis, leading to an erroneous conclusion.

Therefore, the type I error in this hypothesis test would be rejecting the null hypothesis and moving the team based on the claim of an average attendance over 67,000, when in fact the null hypothesis is true and the average attendance is not over 67,000

To learn more about null hypothesis here:

brainly.com/question/28920252#

#SPJ11

Based on the given conditions, it is not justified to test a claim about a population mean (μ) using a normal distribution, as the original population is not normally distributed.

To determine whether it is justified to test a claim about a population mean (μ), we need to consider the sample size (n), the population standard deviation (σ), and the distribution of the original population.

Sample size (n): The given sample size is n = 49, which is considered large according to the Central Limit Theorem. Large sample sizes (typically n ≥ 30) tend to produce sample means that are normally distributed, regardless of the shape of the original population. However, this condition alone is not sufficient to justify testing a claim about a population mean using a normal distribution.

Population standard deviation (σ): The given population standard deviation is σ = 12.3, which is known. When the population standard deviation is known, it is appropriate to use a z-test to test a claim about a population mean, assuming other conditions are met. However, this condition alone is not sufficient to justify testing a claim about a population mean using a normal distribution.

Distribution of the original population: The given condition states that the original population is not normally distributed. This is an important factor to consider when testing a claim about a population mean. If the original population is not normally distributed, it may not be appropriate to use a normal distribution for hypothesis testing, as the assumptions of the test may not be met.

Therefore, based on the given conditions, it is not justified to test a claim about a population mean using a normal distribution, as the original population is not normally distributed. Alternative methods, such as non-parametric tests, should be considered for hypothesis testing in this case.

To learn more about population mean here:

brainly.com/question/19538277#

#SPJ11

The probability that none of the given houses were burglarized is 22%, under the required condition that probability that a house in an urban area will be burglarized is 3%, and total number of houses is 30.

Let  us consider X to be the number of houses that were  burglarized.
Then probability of a house in attempts to being burglarized is p = 0.03.
And probability of a house not being burglarized is
q = 1 - p
= 0.97.
The total trials is n = 30.

Now the probability regarding none of the houses will be burglarized is

[tex]P(X = 0) = C(30,0) * (0.03)^0 * (0.97)^{30}[/tex]
= 0.2202

Hence, the probability  of none of the houses being  burglarized is 0.2202

Converting it into percentage

0.22 x 100
= 22%

To learn more about probability,
https://brainly.com/question/13604758

#SPJ4

The value of the variable is 12. 771

It is important that we know the different trigonometric identities. They are;

Also, their different ratios are;

sin θ = opposite/hypotenuse

cos θ = adjacent/hypotenuse

tan θ = opposite/adjacent

From the information given, we have that;

Using the sine identity, we get;

sin 70 = 12/y

cross multiply the values

y = 12/0. 9396

divide

y = 12. 771

Learn about trigonometric identities at: https://brainly.com/question/7331447

#SPJ1

∭R dV = ∫₀² ∫₀^(2-y) ∫₀^(2-x-y) dz dx dy This is the triple integral that sets up the calculation of the volume of the tetrahedron R. Note that we have not evaluated it yet, as requested in the question.

To set up the triple integral that calculates the volume of the tetrahedron R with the given vertices, we can use the formula:

∭R dV

where R is the region bounded by the tetrahedron and dV represents an infinitesimal volume element. Since the tetrahedron has four vertices, we can choose any of them as the origin and set up the integral accordingly.

Let's choose (0,0,0) as the origin. Then the tetrahedron is located in the first octant of the xyz-coordinate system. The plane containing the vertices (0,0,2), (0,2,2), and (2,0,2) intersects the xy-plane at the line segment connecting (0,0,2) and (0,2,0). This means that the z-coordinate of any point in R lies between 0 and 2.

Next, we can consider the faces of the tetrahedron that are perpendicular to the x, y, and z axes. The face containing the vertices (0,0,2), (0,2,2), and (0,0,0) is a triangle lying in the yz-plane, with base 2 and height 2. Therefore, the equation of the plane is x=2-y. This means that the x-coordinate of any point in R lies between 0 and 2-y.

Similarly, the face containing the vertices (2,0,2), (0,0,2), and (0,0,0) is a triangle lying in the xz-plane, with base 2 and height 2. Therefore, the equation of the plane is y=2-x. This means that the y-coordinate of any point in R lies between 0 and 2-x.

Finally, the face containing the vertices (0,2,2), (2,0,2), and (0,0,0) is a triangle lying in the xy-plane, with base 2 and height 2. Therefore, the equation of the plane is z=2-x-y. This means that the z-coordinate of any point in R lies between 0 and 2-x-y.

Putting it all together, we have:

Know more about volume of the tetrahedron here:

https://brainly.com/question/29638425

#SPJ11

The Mongols faced the problem of internal division and conflict as a result of embracing foreigners.

The Mongol Empire was one of the largest and most powerful empires in world history. It spanned from Asia to Europe and controlled a vast territory. However, the empire faced several challenges, including the issue of embracing foreigners and foreign influence.

Embracing foreigners and foreign influence caused harm to the Mongol Empire in several ways. One of the main ways was the dilution of their culture and identity. The Mongols had a unique way of life, language, and culture that made them distinct from other civilizations. However, as the empire expanded, they began to embrace foreigners and foreign ideas, which led to the loss of their identity and cultural heritage.

The empire was composed of various ethnic groups, and each group had its own way of life, culture, and language. Embracing foreigners and foreign influence created tension and conflict between the different ethnic groups, which weakened the empire's unity and strength.

To know more about empire here

https://brainly.com/question/977538

#SPJ4

The solution is, 28 miles can he go.

Given that,

The Yellow Cab Taxi charges a flat rate of $3.50 for every cab ride, plus $0.95 per mile.

Tofi needs a ride from the airport.

He only has $30.10 cash.

let, x miles can he go.

so, for x miles, it will charge:

$3.50 + $0.95 x

now, we have,

He only has $30.10 cash.

so, the inequality will be:

$3.50 + $0.95 x ≤ $30.10

or, $0.95 x ≤ 26.60

or, x  ≤ 28

Hence, The solution is, 28 miles can he go.

To learn more on inequality click:

brainly.com/question/24853349

#SPJ1

False. In any vector space, the equation ax = ay does not necessarily imply that x = y.

In a vector space, scalar multiplication is defined such that multiplying a scalar (a constant) by a vector results in another vector. However, it is not always true that if two scalar multiples of vectors are equal, then the original vectors must be equal as well.

Consider the case where a = 0, which is a valid scalar in any vector space. If we multiply any vector x by 0, we get the zero vector, denoted as 0x = 0, regardless of the value of x. Similarly, multiplying any vector y by 0 gives us 0y = 0. In this case, even though 0x = 0y, it does not necessarily imply that x = y, since both x and y could be any vectors in the vector space.

Therefore, the statement "ax = ay implies that x = y" is false, as demonstrated by the example above where ax = ay but x ≠ y.

To learn more about vector space here:

brainly.com/question/13058822#

#SPJ11

(a) Near Function: C = (F - 32) / 1.8
C = (Cowan - 32) / 1.8 to C = (Cowan + 213) / 1.8

b. (Cowan - 32) / 1.8 = (Cowan + 213) / 1.8
Cowan - 32 = Cowan + 213

-32 = 213
This is a contradiction, so there are no water temperatures where the readings are equal.

Based on the information provided, it seems like you're looking for a function that converts Celsius (C) to Fahrenheit (F) and at what temperature both readings are equal.
To convert Celsius to Fahrenheit, you can use the formula F = (C x 1.8) + 32 where F represents the temperature in Fahrenheit and C represents the temperature in Celsius. In this case, we have a water temperature reading that corresponds to a range between Cowan - 32 and Cowan + 213. To find the near function in Celsius-Fahrenheit, we can plug in these values and simplify:

a. The function that converts Celsius to Fahrenheit is given by the following equation:

C = (F - 32) * (5/9)

We need to solve for F in terms of C:

F = (9/5) * C + 32

In this function, "C" represents the temperature in Celsius and "F" represents the temperature in Fahrenheit.

b. To find the temperature at which the Celsius and Fahrenheit readings are equal, we need to set C equal to F:

C = F

Now, substitute the expression for F from part (a) into this equation:

C = (9/5) * C + 32

Next, solve for C:

C = (5/9) * (C - 32)

5C = 9 * (C - 32)

5C = 9C - 288

4C = 288

C = 72

So, the temperature at which the Celsius and Fahrenheit readings are equal is 72 degrees.

Learn more about Temperature:

brainly.com/question/11464844

#SPJ11

True. A low interference practice schedule involves practicing different skills in a random order, without a set pattern or sequence.

This type of schedule allows for more variability in practice, which can lead to better transfer of skills to real-life situations. In contrast, a high-interference practice schedule involves practicing skills in a blocked order, where one skill is repeated multiple times before moving on to the next skill. While this type of schedule may lead to quicker initial learning, it may not be as effective for long-term retention and transfer of skills. Therefore, a low interference practice schedule is often recommended for individuals looking to improve their overall skillset.

for more information on low interference see:

https://brainly.com/question/29034831

#SPJ11

The correct answer is option d. 928.02. This can be answered by the concept of sum of squares.

The sum of squares due to regression (SSR) is a statistical term that measures the total amount of variation in the dependent variable that can be explained by the regression model. It is also known as the explained sum of squares. SSR is an important component of the analysis of variance (ANOVA) used in regression analysis to assess the goodness of fit of the regression model.

In the given options, option d. 928.02 is the correct answer as it represents the sum of squares due to regression (SSR). Option a. 1434, option b. 505.98, and option c. 50.598 are not correct as they do not represent the sum of squares due to regression (SSR).

Therefore, the correct answer is d. 928.02.

To learn more about sum of squares here:

brainly.com/question/31484660#

#SPJ11

The point estimate of the population proportion that failed the test is:

14/400 = 0.035 = 3.5% ,  the margin of error is 0.030 , the 98% confidence interval for the population proportion is between 0.005 and 0.065. No, it is not reasonable to conclude that 6% of the employees cannot pass the company policy test

b. The margin of error can be calculated using the formula:

ME = z√((p-hat(1-p-hat))/n)

where z* is the z-value for the desired confidence level (98% in this case), p-hat is the point estimate of the population proportion, and n is the sample size.

Using a z-value of 2.33 (from a z-table for 98% confidence level), we get:

ME = 2.33sqrt((0.035(1-0.035))/400) = 0.030

Therefore, the margin of error is 0.030.

c. The 98% confidence interval can be calculated as:

CI = p-hat ± ME

where p-hat is the point estimate of the population proportion and ME is the margin of error calculated in part (b).

Substituting the values, we get:

CI = 0.035 ± 0.030

CI = (0.005, 0.065)

Therefore, the 98% confidence interval for the population proportion is between 0.005 and 0.065.

d. No, it is not reasonable to conclude that 6% of the employees cannot pass the company policy test because the point estimate and the confidence interval calculated in parts (a) and (c) do not include 6%. In fact, the upper limit of the confidence interval is only 6.5%, which is lower than 6%.

Learn more about population proportion,

https://brainly.com/question/15087042

#SPJ4

The statement( cons 1 cons( 2'()))'( 1 2 3) will give the list( 1 2 1 2 3).

cons 1( cons 2'())) in Lisp or Scheme creates a new list by consing the element 1 onto the front of a new list created by consing 2 onto an empty list (). The performing list is( 1 2).

thus, if you're trying to apply the result of( cons 1( cons 2'())) to the list(), you need to restate this into the applicable syntax for the language you're working in. The cons function takes two arguments and returns a new pair (a "cons cell") where the first argument is the "car" (short for "Contents of the Address Register") and the second argument is the "cdr" (short for "Contents of the Decrement Register").

Learn more about list;

https://brainly.com/question/29832462

#SPJ4

The test statistic is 144.90

Explanation: To find the value of the test statistic, we will use the formula for the chi-square test statistic for standard deviation:

Test statistic = (n - 1) * (s^2) / (σ^2)

where n is the sample size, s is the sample standard deviation, and σ is the hypothesized population standard deviation.

Given:
- The hypothesized population standard deviation (σ) is 12 bpm (from the claim)
- The sample size (n) is 138 adult males
- The sample standard deviation (s) is 12.3 bpm

Now, plug the given values into the formula:

Test statistic = (138 - 1) * (12.3^2) / (12^2)
Test statistic = (137) * (151.29) / (144)
Test statistic = 20866.53 / 144
Test statistic ≈ 144.90

So, the value of the test statistic is approximately 144.90 (rounded to two decimal places).

Learn more about it here:

https://brainly.com/question/31581947

#SPJ11

The absolute minimum value and the absolute maximum value in the interval (4, 8) are 694 and 758 respectively.

An absolute maximum point is a point where the function obtains its greatest possible value.

An absolute minimum point is a point where the function obtains its least possible value.

The given function is -

f(x) = 4x² - 64x + 950

The absolute minimum value in the interval (4, 8), we can see from the graph that the absolute minimum value is -

Absolute minimum = 694

The absolute maximum value in the interval (4, 8), we can see from the graph that the absolute minimum value is -

Absolute minimum = 758

To solve more questions on maxima and minima, visit the link-

https://brainly.com/question/30529566

#SPJ4

12π ÷ 9 is approximately equivalent to 4/3. The correct option is A).

The expression 12π ÷ 9 can be simplified by dividing both the numerator and the denominator by 3. This gives us

12π ÷ 9 = (12/3) π ÷ (9/3) = 4π ÷ 3

So, 12π ÷ 9 is equivalent to 4π ÷ 3

This gives us 4π ÷ 3, which is equivalent to 1.33π.

This means that the answer is approximately equal to 4/3, as 1.33 is very close to 4/3, which equals 1.3333.... Therefore, the correct answer is A, 4/3.

In approximate values, we often use fractions or decimals that are close to the exact value, which is the case in this problem.

To know more about division:

https://brainly.com/question/15381501

#SPJ4

The length of BC is approximately 20.99 cm.

The values of all trigonometric functions based on the ratio of the sides of a right-angled triangle are referred to as trigonometric ratios.

We are aware that the triangle ABC is a right-angled triangle because the angle C = 90 degrees.

Hence, we can utilize the mathematical proportion of the sine capability to address for the length of BC.

Using the sine function, we have:

sin(A) = BC/AC

where A is the angle opposite to side BC.

Substituting the values we have:

sin(44 degree) = BC/27.3

Multiplying both sides by 27.3, we get:

BC = 27.3 x sin(44 degree)

Using a calculator, we get:

BC = 20.99 cm (rounded to two decimal places)

Therefore, the length of BC is approximately 20.99 cm.

Know more about trigonometry visit :

https://brainly.com/question/13971311

#SPJ1

As a result, the circle's radius is roughly 6.30 cm, and the cone's vertical angle is approximately 7.04 degrees.

The diameter is a straight line that runs through the circle's centre. The radius is half the diameter.It begins at a point on the circle and terminates at the circle's centre.

Let's start by calculating the diameter of the circle from which the sector was sliced. Because the sector's central angle is 320°, the remaining central angle is:

360° - 320° = 40°

That example, the sector is 40/360 = 1/9 of the entire circle. As a result, the diameter of the entire circle is:

C = (2π)r

where r denotes the circle's radius. Because the sector used to construct the cone is 7 cm long along its curved edge, its length is also equivalent to 1/9 of the circle's circumference:

7 = (1/9)(2π)r

By multiplying both sides by 9/2, we get:

r = (63/2π) cm

Let us now calculate the cone's slant height. The slant height is the distance between the cone's tip and the border of the circular base. Because the sector used to construct the cone subtends an angle of 320° at its centre, the circle's remaining central angle is:

360° - 320° = 40°

This indicates that the cone's base is a circular sector with a central angle of 40° and a radius of 7 cm. The length of this sector's curving edge is:

(40/360)(2π)(7) = (4/9)π cm

The cone's slant height is equal to this length, so:

l = (4/9)π cm

Finally, determine the cone's vertical angle. The vertical angle is the angle formed by the cone's base and tip. This angle may be calculated using the Pythagorean theorem:

tan(θ) = (l / r)

where is the cone's vertical angle. Substituting the values we discovered for l and r yields:

tan(θ) = [(4/9)π] / [(63/2π)]

When we simplify this expression, we get:

tan(θ) = 8/63

We may calculate the inverse tangent of both sides as follows:

θ = tan^-1(8/63)

Using a calculator, we discover:

θ ≈ 7.04°

As a result, the circle's radius is roughly 6.30 cm, and the cone's vertical angle is approximately 7.04 degrees.

To know more about diameter here-https://brainly.com/question/13015686

#SPJ1