Answers
Answer:
B. 11.42Step-by-step explanation:
Use the law of cosines:
\(c = \sqrt{a^2+b^2-2ab*cosC}\)Substitute the values:
\(c = \sqrt{9^2+12^2-2*9*12*cos64}=11.42\)Use law of cosines
c=√a²+b²-2abcosCc=√9²+12²-2(9)(12)cos64c=√81+144-216cos64c=√225-216cos64c=11.42 approxRelated Questions
Identify the type I error and the type II error that correspond to the given hypothesis.
The percentage of households with Internet access is greater than 60 %.
Answers
Answer: Type I error and Type II error are associated with hypothesis testing, where we test a hypothesis by collecting data and analyzing it.
For the given hypothesis, we can set up the null hypothesis as follows:
H0: The percentage of households with Internet access is less than or equal to 60%.
And the alternative hypothesis as:
Ha: The percentage of households with Internet access is greater than 60%.
Now, a Type I error occurs when we reject the null hypothesis (i.e., conclude that the percentage of households with Internet access is greater than 60%) when it is actually true. This means that we would be making a false claim that the percentage of households with Internet access is greater than 60%, when it is not.
On the other hand, a Type II error occurs when we fail to reject the null hypothesis (i.e., conclude that the percentage of households with Internet access is less than or equal to 60%) when it is actually false. This means that we would be missing the truth that the percentage of households with Internet access is greater than 60%.
So, in the context of the given hypothesis, a Type I error would be to conclude that the percentage of households with Internet access is greater than 60% when it is actually less than or equal to 60%, and a Type II error would be to fail to conclude that the percentage of households with Internet access is greater than 60% when it is actually greater than 60%.
pooled variance =a. SS1 + SS2 / df1 + df2b. SS1 + SS2 / n1 + n2
Answers
The formula you have given (SS₁ + SS₂) / (n₁+ n₂) is actually the formula for the unweighted average of the variances, which is not appropriate when the sample sizes and variances are different between the two samples.
The formula for pooled variance is:
pooled variance = (SS₁+ SS₂) / (df₁ + df₂)
where SS₁ and SS₂ are the sum of squares for the two samples, df₁ and df₂ are the corresponding degrees of freedom, and the pooled variance is the weighted average of the variances of the two samples, where the weights are proportional to their degrees of freedom.
Note that the denominator is df₁ + df₂ not n₁+ n₂. The degrees of freedom take into account the sample sizes as well as the number of parameters estimated in
Learn more about “ formula for pooled variance “ visit here;
https://brainly.com/question/31450664
#SPJ4
What is Dangerous on living for 7 days on a can of sardines Questions. . . .
Answers
Answer:
YOU MIGHT FALL OFF
Step-by-step explanation:
that's the answer
-kenma #3
The area values of the circles given in the attachment are :
28.26 cm²50.24 in²314 m²12.56 cm²254.34 ft²4.52 km²7850 in²379.94 m²19.63 cm²200. 96 ft²1256 m²78.5 cm²7.07 m²113.04 in²200. 96ft²38.47 cm²0.28 km²3.14 cm²Area of a circle =
\( {\pi} {r}^{2} \)
Where, r = Radius
\( \frac{\pi {d}^{2} }{4} \)
d = diameter
\(\pi = 3.14\)
1.)
r = 3cm
Area = 3.14 × 3² = 28.26 cm²
2.)
r = 4 in
Area = 3.14 × 4² = 50.24 in²
3.)
r = 10 m
Area = 3.14 × 10² = 314 m²
4.)
r = 2cm
Area = 3.14 × 2² = 12.56 cm²
5.)
r = 9 ft
Area = 3.14 × 9² = 254.34 ft²
6.)
r = 1.2 km
Area = 3.14 × 1.2² = 4.52 km²
7.)
r = 50 in
Area = 3.14 × 50² = 7850 in²
8.)
r = 11 m
Area = 3.14 × 11² = 379.94 m²
9.)
r = 2.5 cm
Area = 3.14 × 2.5² = 19.63 cm²
10.)
d = 16 ft
Area = (3.14 × 16²) ÷ 4 = 200. 96ft²
11.)
d = 40 m
Area = (3.14 × 40²) ÷ 4 = 1256 m²
12.)
d = 10 cm
Area = (3.14 × 10²) ÷ 4 = 78.5 cm²
13.)
d = 3 m
Area = (3.14 × 3²) ÷ 4 = 7.07 m²
14.)
d = 12 in
Area = (3.14 × 12²) ÷ 4 = 113.04 in²
15.)
d = 16 ft
Area = (3.14 × 16²) ÷ 4 = 200. 96ft²
16.)
d = 7cm
Area = (3.14 × 7²) ÷ 4 = 38.47 cm²
17.)
d = 0.6 km
Area = (3.14 × 0.6²) ÷ 4 = 0.28 km²
18.)
d = 2 cm
Area = (3.14 × 2²) ÷ 4 = 3.14 cm²
https://brainly.com/question/11952845?referrer=searchResults
Remington Company purchased office equipment for use in the business with an invoice price of $28,000. The company paid $1,500 to have the equipment delivered and another $500 to have it installed. The company paid cash for the transportation and installation costs and signed a note for the invoice price of the new equipment.
Answers
What is the equation of a line parallel to y=x that passes through the point (0,1) ?
a. y=x+1
b. y=2 x+2
c. y=x-1
d. y=-x
Answers
Answer: Maybe D, I'm not sure
Step-by-step explanation:
Insert a digit to make numbers that are divisible by 12 if it is possible 14…4
Answers
Answer: Insert a 6. The number divisible by 12 is 1464
Step-by-step explanation: Start by dividing 12 into the first two digits.
I am using old-fashioned long division.
1 2
12 ) 14 6
-12
26. this is the remainder, The next digit has to be a number that when divided by 12 will leave a remainder, that when paired with 4, will be evenly divisible by 12.
6 is that number . When you "bring down" the 6, you will be dividing 26÷12. a 2 goes into the quotient, and in the next step 24 is subtracted from 26; the remainder is 2.
Bring down the 4 and divide 12 into 24. The result is 2 as the quotient. 2 ×12 =24 . 24- 24 is 0
1464 ÷ 12 = 122
1. uniform ml estimation. let x ⇠unif [a, 1] with unknown a. to estimate a, we use a training set {xi}ni=1 generated i.i.d. unif [a, 1]. let ˆxn = min {x1, x 2, æææ, x n}. find the ml estimator of a.
Answers
The maximum likelihood estimator of a is the minimum of the n observations {xi}
The data is generated i.i.d. from a uniform distribution [a, 1], the probability density function (pdf) of each observation is given by:
f(x; a) = 1/(1-a), for a ≤ x ≤ 1
= 0, otherwise
The likelihood function for n observations {xi}ni=1 is the product of their individual pdfs:
L(a; x1, x2, ..., xn) = ∏(1/(1-a)) = (1/(1-a))ⁿ, for a ≤ xi ≤ 1 for all i
The maximum likelihood estimate of a, we need to find the value of a that maximizes the likelihood function.
We can do this by finding the derivative of the log-likelihood function and setting it to zero:
ln L(a; x1, x2, ..., xn) = n ln(1/(1-a))
d/d(a) ln L(a; x1, x2, ..., xn) = -n/(1-a)
Setting the derivative to zero, we get:
n/(a-1) = 0
The derivative is negative for a < 1 and positive for a > 1, the maximum likelihood estimate of a is the smallest observation in the sample:
\(\^a = \^xn\)
= min {x1, x2, ..., xn}
For similar questions on maximum likelihood
https://brainly.com/question/31961355
#SPJ11
The maximum likelihood (ML) estimator of parameter a in the uniform distribution is ˆa = ˆxn.
In this scenario, we have a random variable x that follows a uniform distribution on the interval [a, 1]. The goal is to estimate the unknown parameter a using a training set {xi}ni=1, where each xi is independently and identically distributed (i.i.d.) from the uniform distribution on the same interval [a, 1].
The ML estimator seeks to find the parameter value that maximizes the likelihood function, which measures the probability of obtaining the observed data. In this case, the likelihood function is based on the order statistics of the training set.
The order statistic ˆxn represents the minimum value among the observations in the training set. Since the minimum value occurs when x is closest to the lower bound a, it is reasonable to use ˆxn as the ML estimator for a.
Therefore, the ML estimator of parameter a is ˆa = ˆxn, which corresponds to the minimum value observed in the training set.
To learn more about random variable click here
brainly.com/question/29077286
#SPJ11
HELP YOU GET BRAINLIEST!! What is the cost of 8 shirts?!
Answers
Answer: B, 120
Step-by-step explanation:
look at x-value 8 and find y-value
Answer:
the cost of 8 shirts would be $120.
Step-by-step explanation:
if you go to the 8 on the bottom where it says "number of shirts" and you follow that line up to the blue dot and then over, you reach 120 on the side where it says "cost" so your answer would be $120.
b) Obtain reduced cost matrix for travelling sales person problem. Consider the instance define by the cost matrix: [8M] 00 5 1 10 6 4 12 7 1 Pa 8 a 3 7 6 1 8نرا 4 16 9 3 8 a 16 12 7 6 00 *****
Answers
The reduced cost matrix for travelling salesperson problem in the given instance is shown below. The Travelling Salesperson Problem (TSP) is a classical combinatorial optimization issue that belongs to the category of NP-Hard problems.
This problem can be resolved using a branch and bound algorithm or by using dynamic programming.The reduced cost matrix for the given travelling salesperson problem instance The computation of the reduced cost matrix for travelling salesperson problem involves two steps: Identify the smallest element of each row and subtract the value from all the values in the row.
Identify the smallest element of each column and subtract the value from all the values in the column.In the given instance, the smallest element of each row is highlighted in bold. Therefore, after performing Step 1 the matrix becomes the matrix becomes Hence, the reduced cost matrix for the travelling salesperson problem is obtained.
To know more about optimization visit :
https://brainly.com/question/3589540
#SPJ11
HELP ME WITH THIS QUESTION FOR BRAINLIEST
Answers
Answer: "-99"
Step-by-step explanation:
You should begin evaluating the given expression from the innermost part.
So, you should find the s(5) firstly. And then, you should use this value for the other function to find r(s(5)).
If you calculate s(5) ==> (-2) * (5)^2 + 1 = -49
This means that the question is asking what is r(-49), indeed.
If you finally calculate r(-49) ==> 2 * (-49) - 1 = -99
The answer is -99.
The distribution of prices for a certain car model is approximately normal with mean $21,800 and standard deviation $400. A random sample of 4 cars of the model will be selected. What is the standard deviation of the sample? a. 200b. 50c. 400d. 100
Answers
The standard deviation of the sample is 200.
As per the data given:
The distribution of prices for a certain car model is approximately normal with a mean of $21,800 and a standard deviation of $400.
The mean of the data will be $21,800.
The standard deviation of the data will be $400
A random sample of 4 cars of the model is to be selected.
That is n = 4
Here we have to determine the standard deviation of the sample.
By examining the square root of the variance, standard deviation measures how far apart a set of data is from the mean.
Therefore the standard deviation of the Sampling distribution of \($\bar{x}$\) is:-
\($ \sigma_{\bar{x}}=\frac{\sigma}{\sqrt{n}} \\\)
\($\Rightarrow & \sigma_{\bar{x}}=\frac{400}{\sqrt{4}} \\\)
\($\Rightarrow & \sigma_{\bar{x}}=\frac{400}{2} \\\)
\(\Rightarrow & \sigma_{\bar{x}}\) = 200
Therefore the standard deviation of the Sampling distribution \($\bar{x}$\) is 200
Hence option (a) is the correct answer
For more questions on standard deviation
https://brainly.com/question/20935438
#SPJ4
convert 144km/h into metres per second.? pls make it quick loves :3
Answers
40
---
hope it helps
sorry if it doesn't
What is the answer please
Answers
Answer:
99 cm²
Step-by-step explanation:
Area of this triangle:
\(A = \frac{hb}{2}\)
A = (11×18)÷2
A = 198÷2
A = 99
Units will be cm²
Discord?
Moon Knight#1868
What is (3/2) raised to the power of -3?
What is (3/2)^-3?
Answers
8/27
Alternate form -
0.296 or (2/3)^3
Explanation:
Either one of these
Comparing Proportional Relationships: Mastery Test Submi Find the tables with unit rates greater than the unit rate in the graph. Then arrange these tables in order from least to greatest unit rate. у 70 65 60 55 50 45 35 30 -25 20 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 X y XY ху XY 7:13 59 9 17 11 21 1019 13 25 1223 14126 1018 18 34 2242 2038 26 50 24 4G
Answers
The unit rate is found dividing y-variable by x-variable. In the case of the graph, the unit rate is:
\(\frac{15}{8}\)Except for the first two tables, the other ones have unit rates greater than 15/8.
From least to greatest, the ordered unit rates are:
9/5, 13/7, 17/9, 19/10, 21/11, 23/12, 25/13
Please respond quick!!!
Answers
I think that for a its 1.12 and for b its 39424
100 + 12 = 112
112/100 = 1.12
35200 * 1.12 = 39424
PLEASE HELP!!! ILL GIVE BRAINLIEST, EXPLAIN YOUR ANSWER PLEASE
Answers
Answer: -20v^3 - 30x^2 +20
Step-by-step explanation:
simply multiply each term inside of the parentheses by -5.
Answer:
20v³ + 20 - 30x²
Step-by-step explanation:
multiply -5 by all three terms inside parentheses
(-5)(-4v³) + (-5)(-4) + (-5)(6x²)
20v³ + 20 - 30x²
Use linear approximation, i.e. the tangent line, to approximate as follows: Let f(x) = and find the equation of the tangent line to f(x) at a nice" point near 0.202. Then use this to 1/0.202 approximate 1/0.202
Answers
ANSWER
\(\begin{equation*} 4.95 \end{equation*}\)EXPLANATION
Given;
\(f\mleft(x\mright)=\frac{1}{x}\)Now, evaluate its first derivative;
\(f^{\prime}(x)=-\frac{1}{x^2}\)Now;
\(\begin{gathered} x=0.2=\frac{1}{5} \\ f(x)=5,f^{\prime}(x)=-25 \end{gathered}\)Hence, we have;
\(l(x)=5-25(x-0.2)=5-25x+5\)by substitution;
\(\begin{gathered} \frac{1}{0.202}=5.25(0.202-0.2) \\ =5-0.05 \\ \cong4.95 \end{gathered}\)1 y=2x+3
y=2x-3
is it perpendiclular parallel or neither
Answers
what does a researcher do with the mixed significance results he or she may have found in a multiple regression analysis?
Answers
The researcher will Eliminate the nonsignificant independence variable and rerun the regression.
Meaning of multiple regression analysis: Multiple regression is a statistical technique that can be used to analyze the relationship between a single dependent variable and several independent variables. The objective of multiple regression analysis is to use the independent variables whose values are known to predict the value of the single dependent value.
When modeling the relationship between a single response variable and multiple regressor variables, multiple regression analysis is used.
To learn more about Multiple Regression visit
https://brainly.com/question/29526956
#SPJ4
You move down 7 units. You end at (7, 3). Where did you start?
How do I solve it

Answers
Answer: (7,10)
Step-by-step explanation:
I NEED HELP ASAP. WILL GIVE BRAINLIEST!!!
Suppose tan(b) = –2, and the terminal side of b is located in quadrant II. What is cot(b)?
–2
Negative one-half
One-half
2
Answers
Answer:
maybe -2.
Step-by-step explanation:
maybe I guess
Walmart is selling 100 mL tubes of toothpaste for $1.79 or 150 mL of toothpaste for $2.19. Which is the better buy?
Answers
Answer:
1.79/100mL = 0.0179
2.19/150mL = 0.0146
so, look at the end numbers
0.0179
0.0146
0.0146 is less than 0.0179
soo, $2.19 / 150mL = 0.0146 is the better buy...
can i be brianiest...
Marco climbed 2 feet down a ladder. He then climbed down
4 more feet. Write a subtraction equation and an equivalent
addition equation to represent this situation. What was the total
change in Marco’s elevation?
Answers
Answer:
well (-2) -4=-6
Step-by-step explanation:
the the elevation he changed in is 6ft goign down
The equivalent addition equation to represent this situation will be negative 6. Then the total change in Marco’s elevation will be negative 6.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Marco climbed 2 feet down a ladder. He then climbed down 4 more feet.
The equivalent addition equation to represent this situation will be given as,
⇒ (-2) + (-4)
⇒ - 2 - 4
⇒ - 6
The equivalent addition equation to represent this situation will be negative 6. Then the total change in Marco’s elevation will be negative 6.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
super easy! 10pt pic below...
Answers
Answer: it 1 or 2
Step-by-step explanation:
Answer:
\(6b\)
Step-by-step explanation:
\(6b(2a - 1) \\ (6b \times 2a) + (6b \times - 1) \\ = 12ab - 6b\)
if t is in minutes after a drug is administered , the concentration c(t) in nanograms/ml in the bloodstream is given by c(t)=20te−0.02t. then the maximum concentration happens at time t=?
Answers
The maximum concentration occurs at time t = 50 minutes.
To find the maximum concentration, we need to find the maximum value of the concentration function c(t). We can do this by finding the critical points of c(t) and determining whether they correspond to a maximum or a minimum.
First, we find the derivative of c(t):
c'(t) = 20e^(-0.02t) - 0.4te^(-0.02t)
Next, we set c'(t) equal to zero and solve for t:
20e^(-0.02t) - 0.4te^(-0.02t) = 0
Factor out e^(-0.02t):
e^(-0.02t)(20 - 0.4t) = 0
So either e^(-0.02t) = 0 (which is impossible), or 20 - 0.4t = 0.
Solving for t, we get:
t = 50
So, the maximum concentration occurs at time t = 50 minutes.
Learn more about concentration here
https://brainly.com/question/26255204
#SPJ11
Help again for like the 2nd time
Answers
Answer:
d) 94°
Step-by-step explanation:
supplementary means 'adds up to 180°
86 + m∡3 = 180
m∡3 = 180 - 86
A parallelogram has a base of 9 and a corresponding height of 2/3. What is the area?
Answers
Therefore area of a parallelogram = 6
Given the base of a parallelogram = 9
Height of a parallelogram = 2/3
We have to find the area of the parallelogram as
The formula for the area of the parallelogram as base * height
By using the above formula we get
Area of parallelogram = base * height
= 9 * 2/3
= 3 * 2
= 6
Therefore area of a parallelogram = 6
To learn more about parallelogram refer below
https://brainly.com/question/19187448
#SPJ9
Select the letter in the box that correctly describes the three-dimensional figure.
A B C D E
Cone
Sphere
Cylinder
Answers
A sphere is E
A cylinder is A,C
Choose a company with your option and explain how
that company can create a business model? There are 8 steps in the
business module, explain each step based on the company which you
have chosen.
Answers
Company: Amazon, 8 Steps in the Business Model: Define the value proposition. What value does Amazon offer its customers? Amazon offers a convenient and affordable way to shop for a wide variety of products.
Identify the target market. Who are Amazon's customers? Amazon's target market is people who want to buy products online.
Determine the revenue streams. How does Amazon make money? Amazon makes money through product sales, advertising, and subscription fees.
Assess the cost structure. What are Amazon's costs? Amazon's costs include salaries, rent, and marketing.
Develop a marketing plan. How will Amazon reach its target market? Amazon's marketing plan includes online advertising, search engine optimization, and social media marketing.
Create a sales strategy. How will Amazon sell its products? Amazon's sales strategy includes a focus on customer service and convenience.
Build a team. What skills and experience does Amazon need to build a successful business? Amazon needs a team with a variety of skills, including product development, marketing, and sales.
Continuously improve. How will Amazon ensure that its business model is successful? Amazon will continuously improve its business model by listening to customer feedback and adapting to changes in the market.
The 8 steps in the business model are essential for any company that wants to be successful. By following these steps, companies can ensure that they are offering a valuable product or service to the right customers, and that they are able to make money.
In the case of Amazon, the company has clearly defined its value proposition, target market, and revenue streams.
Amazon's marketing plan is also effective, and the company has built a team with the skills and experience necessary to be successful. Finally, Amazon is committed to continuous improvement, which is why the company has been so successful over the years.
To know more about value click here
brainly.com/question/30760879
#SPJ11