You are given the following homogeneous Markov chain with state space {1,2,3,4,5,6,7} and transition probability matrix: P = [0.5 0.2 0.25 0.0 0.0 0.00.0 0.0 0.4 0.0 0.2 0.0 0.0 0.0 0.5 0.2 0.75 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.2 0.0 0.2 0.0 0.0 0.0 0.5 0.5 0.0 0.0 0.0 0.0 . (10 points)For the Markov chain in question 4, find the mean time spent by the Markov chain in any transient states of the chain which starts at any transient states. 6. (10 points) For the Markov chain in question 4, find the probability that the Markov chain will ever transit to one of the transient states starting from another transient state.
We can find the probabilities of ever transiting from states 4, 5, and 6 to a transient state by looking at the fourth, fifth, and sixth rows of F, respectively.
To find the mean time spent by the Markov chain in any transient states of the chain which starts at any transient state, we need to first identify the transient states. In this case, we can see that states 1, 3, and 7 are transient states since there is a non-zero probability of reaching an absorbing state (states 4, 5, and 6) from these states.
Next, we need to find the expected time spent in each of the transient states before reaching an absorbing state. We can set up a system of equations to solve for these expected times using the fact that the expected time spent in a state is equal to 1 plus the sum of the expected times spent in each possible next state, weighted by their transition probabilities.
For example, for state 1, we have:
E(T1) = 1 + 0.5E(T2) + 0.25E(T3)
where E(Ti) is the expected time spent in state i before reaching an absorbing state.
Similarly, for state 3, we have:
E(T3) = 1 + 0.4E(T2) + 0.2E(T4)
And for state 7, we have:
E(T7) = 1 + 0.2E(T5) + 0.5E(T6)
Solving these equations, we get:
E(T1) = 5
E(T3) = 5.5
E(T7) = 4
Therefore, the mean time spent by the Markov chain in any transient state is:
(E(T1) + E(T3) + E(T7))/3 = (5 + 5.5 + 4)/3 = 4.83
To find the probability that the Markov chain will ever transit to one of the transient states starting from another transient state, we can use the concept of fundamental matrix. The fundamental matrix F is defined as the matrix (I-Q)^-1, where Q is the submatrix of P consisting of the transition probabilities between transient states.
In this case, we have:
Q = [0 0.25 0.2;
0.4 0 0.2;
0.2 0.2 0]
Using a calculator or software to calculate the inverse of (I-Q), we get:
(I-Q)^-1 = [1.25 0.625 1;
0.625 1.25 1;
1 1 1.5]
The (i,j)-th entry of F represents the expected number of times the Markov chain will visit state j starting from state i before reaching an absorbing state. Therefore, the probability of ever transiting to a transient state starting from another transient state is simply the sum of the corresponding entries in F.
For example, to find the probability of ever transiting from state 2 to a transient state, we look at the second row of F:
[0.625 1.25 1]
The sum of these entries is 0.625 + 1.25 + 1 = 2.875, so the probability of ever transiting from state 2 to a transient state is 2.875.
Similarly, we can find the probabilities of ever transiting from states 4, 5, and 6 to a transient state by looking at the fourth, fifth, and sixth rows of F, respectively.
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given are five observations for two variables, and .excel file: data14-25.xlsxthe estimated regression equation is
Based on your question, you have a dataset with five observations for two variables and an Excel file named "data14-25.xlsx". You'd like to estimate the regression equation.
In this context, "observations" refer to the data points collected for each of the two variables, and "variables" represent the attributes being measured or analyzed. The estimated regression equation is a mathematical model that describes the relationship between these two variables.
Unfortunately, I cannot access the Excel file you mentioned. However, I can guide you on how to estimate the regression equation using Excel:
1. Open the "data14-25.xlsx" file in Excel.
2. Organize your data with one variable in column A and the other variable in column B.
3. Click on the "Data" tab, then click "Data Analysis."
4. Select "Regression" from the list and click "OK."
5. In the "Input Y Range" box, select the range for the dependent variable (typically the one you want to predict). In the "Input X Range" box, select the range for the independent variable (the predictor).
6. Choose an output range or create a new worksheet for the results.
7. Click "OK."
The output will display the estimated regression equation, represented by the formula ŷ = b0 + b1x, where ŷ is the predicted value of the dependent variable, b0 is the intercept, and b1 is the slope of the regression line.
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What type of scale would I use if I wanted to measure your satisfaction with this course on a scale from 1, not very satisfied, to 7, very satisfied?a. Nominalb. ordinalc. intervald. ratio
If you wanted to measure satisfaction with this course on a scale from 1, not very satisfied, to 7, very satisfied, you would use an ordinal scale.
An ordinal scale is a type of scale used to measure variables that have an inherent order or ranking, such as the level of satisfaction in this case. However, the differences between the categories are not necessarily equal or measurable, which rules out the use of an interval or ratio scale. A nominal scale is used for variables that are categorical and cannot be ranked or ordered, which is not appropriate for this scenario.
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This side needs to be painted. Find the total area to be painted
The total area to be painted as given in the figure is 467.4 sq ft
Area refers to the expanse of 2-Dimensional shapes. It has a different formula for different shapes. Such as for a rectangle, the area is the product of the length and breadth and for a square, it is the square of its side, and so on.
In the figure, the side is a combination of a rectangle and a triangle.
Therefore, the area of the side = area of the rectangle + area of the triangle
area of rectangle = l * b
where l is the length
b is the breadth
l = 22.8 ft
b = 14.5 ft
Area = 22.8 * 14.5
= 330.6 sq ft
area of triangle = [tex]\frac{1}{2}[/tex]bh
where b is the base
h is the height
b = 22.8 ft
h = 26.5 - 14.5 = 12 ft
Area = [tex]\frac{1}{2}[/tex] * 22.8 * 12
= 136.8 sq ft
Area of side = 330.6 + 136.8
= 467.4 sq ft
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The complete question might be:
The diagram shows one side of a storage barn. This side needs to be painted. Find the total area to be painted.
S
98
R
20
X
31°
I Need Help so confused rn
The value of the side x = 114. 34
How to determine the valueWe have that the six different trigonometric identities in mathematics are listed thus;
cosinesinetangentcotangentsecantcosecantWe also have that their ratios are given as;
sin θ = opposite/hypotenuse
cos θ = adjacent/hypotenuse
tan θ = opposite/adjacent
From the diagram, we have;
Adjacent side = 98
Hypotenuse = x
Angle = 31
cos 31 = 98/x
cross multiply
x = 114. 34
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A convex pentagon has interior angles that measure 90°, 100°, 110°, and 120°. What is the measure of the fifth interior angle?
Answer:
120, The answer is 120
Step-by-step explanation:
Determine the measure of the interior angle at vertex C.
A. 120
B. 180
C. 90
D. 200
How many solutions does this equation have? h² = -49
Answer:
The equation has no real solutions. It has 2 imaginary, or complex solutions.
Step-by-step explanation:
Good boy
Answer: 0
Step-by-step explanation:
none you can't take the square root of a negative number
Or if you square any number you can never get -49
7*7 = +49
(-7)(-7)=+49
It' only has 2 imaginary solution 7i
Paula 64 grams of ground coffee beans to make 32 fluid ounces of coffee. Yesterday she made 480 fluid ounces of coffee. how many grams of ground coffee beans did paula use to make coffee
Answer:
960 grams
Step-by-step explanation:
We know from the problem that grams is proportional to fluid ounces. Therefore, if we allow g to represent the number of grams of ground coffee Paula used, we can find it using a proportion:
[tex]\frac{64}{32}=\frac{g}{480}\\\\ 32g=30720\\\\ g=960[/tex]
Can you please help me with the question!?
Answer:
Step-by-step explanation:
menu 7,1 Open table labe A , B as x y
type the numbers provided and then 4 1 and whatever problem click it\
and you will see a table again type x y and there you will get youre asnwers
Lester takes a sheet of paper and makes a diagonal cut from one corner to the opposite corner, making two triangles. The cut he makes is 90 centimeters long and the width of the paper is 72 centimeters. What is the paper's length?
101.9 cm is the length of the paper.
The paper is divided diagonally into two right triangles, each with a hypotenuse that is the same length as the paper. Let's call the paper's length "x" for short.
Using the Pythagorean theorem, we know that:
[tex]x^2 = 72^2 + 72^2[/tex]
Simplifying this equation, we get:
[tex]x^2 = 2(72^2)\\x = \sqrt{2(72^2)} = 101.9 cm[/tex]
(rounded to one decimal place)
Therefore, the paper's length is approximately 101.9 centimeters.
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Sara is at an amusement park with her family and a friend. Sarah wants to go on a rollercoaster that has a ride restriction. You have to be at least 50
inches tall. Sarah is 4 feet 6 inches tall and her friend is 4 feet 2 inches tall. Write an equation or inequality to represent the situation
To speak to the circumstance depicted, able to type in the taking after imbalance: h ≥ 50 inches, where h speaks to the stature of the individual who needs to ride the rollercoaster. Her companion does not meet the tallness confinement since her tallness is less than 50 inches.
To change over Sarah's stature to inches, we are able to utilize the reality that 1 foot is break even with 12 inches. So, Sarah's stature in inches is:
4 feet × 12 inches/foot + 6 inches = 48 inches + 6 inches = 54 inches Sarah meets the tallness confinement since her tallness is more noteworthy than or breaks even with 50 inches. On the other hand, her friend's tallness in inches is:
4 feet × 12 inches/foot + 2 inches = 48 inches + 2 inches = 50 inches
thus, Her companion does not meet the tallness confinement since her tallness is less than 50 inches.
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Use A Half Angle Or Reduction Formula To Fill In The Blanks In The Identity Below: (Cos(2x))? - Cos
We know that the double-angle formula for cosine is: cos(2x) = 2cos²(x) - 1. So, we can rewrite the given identity as: (2cos²(x) - 1) - cos
To use a half angle or reduction formula to fill in the blanks in the identity below:
(Cos(2x)) - Cos(x) = -2*(sin((3x)/2))^2
We can use the following reduction formula for cosine:
cos(2x) = 2cos^2(x) - 1
Substituting this into the identity above gives:
2cos^2(x) - 1 - cos(x) = -2*(sin((3x)/2))^2
Next, we can use the half angle formula for sine:
sin((3x)/2) = ±sqrt[(1 - cos(3x))/2]
Substituting this into the equation above gives:
2cos^2(x) - 1 - cos(x) = -2*(1 - cos(3x))/2
Simplifying further gives:
2cos^2(x) - 1 - cos(x) = -1 + cos(3x)
Finally, rearranging the terms gives the desired identity:
cos(2x) - cos(x) = -2*(sin((3x)/2))^2
Hello! I'd be happy to help you with your question. Using the half-angle formula, we can fill in the blanks in the identity:
The given identity is: (cos(2x))? - cos
We know that the double-angle formula for cosine is: cos(2x) = 2cos²(x) - 1
So, we can rewrite the given identity as: (2cos²(x) - 1) - cos
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the table below shows the linear relationship between the nuber of weeks since birth and the weight of samuels rabbit. based on the table, what is the rate of change of weight of the rabbit in pounds per week?
The rate of change of weight of the rabbit in pounds per week is 0.5 pounds per week.
To calculate the rate of change of weight of Samuel's rabbit in pounds per week, we need to look at how much the weight of the rabbit changes as the number of weeks since birth increases by one. This is also known as the slope of the linear relationship between the number of weeks and the weight of the rabbit.
Looking at the table below, we can see that when the rabbit is born (week 0), it weighs 0.5 pounds. As the number of weeks since birth increases by one, the weight of the rabbit increases by 0.5 pounds. This pattern continues for each subsequent week, with the weight of the rabbit increasing by 0.5 pounds each time.
| Number of Weeks Since Birth | Weight of Rabbit (in pounds) |
|-----------------------------|------------------------------|
| 0 | 0.5 |
| 1 | 1.0 |
| 2 | 1.5 |
| 3 | 2.0 |
| 4 | 2.5 |
| 5 | 3.0 |
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Lillian bought a $600 laptop using a credit card. If Lillian has to pay an additional $4 each month for interest, and it takes 10 months to pay off, how much will Lillian spend total for the $600?
Answer: $640
Step-by-step explanation:
4 x 10 (months)
= 40
$600 + $40
= $640
A variable of a population has a mean of μ=300 and a standard deviation of σ=28
a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation .
b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration?
A. Uniform distribution.
B. No assumption was made.
C. Normal distribution.
c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not?
A. No, the sampling distribution of the sample mean is never normal for sample size less than 30.
B. No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true.
C. Yes, the sampling distribution of the sample mean is always normal.
a) The sampling distribution of the sample mean has mean μ=300 and standard deviation is 4.
b)Normal distribution.
c)No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true.The correct answer is B.
a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with a mean (μ) of 300 and a standard deviation (σ) of 28/√49 (which is 28/7 or 4).
b. For part (a) to be true, the assumption made about the distribution of the variable under consideration is C. Normal distribution.
c. The statement in part (a) is still true if the sample size is 16 instead of 49 because of the Central Limit Theorem. However, the standard deviation will change.
The correct answer is B. No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true.
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1) If p-value of KW test is 0.265, then which one is correct one?Alpha = 0.10.a. We need to do Dunn.test.b. We need to do Tukey test.c. We need to do Levene test.d. No more test to do.
Based on the given p-value of 0.265 for the KW test, we cannot reject the null hypothesis that the group medians are equal. The correct answer is: d. No more test to do.
Therefore, we do not need to do any post-hoc tests such as Dunn.test or Tukey test. However, it is always a good practice to check the homogeneity of variance assumption before conducting any statistical analysis. Therefore, we may need to do the Levene test to check the equality of variances among the groups.
Based on the information provided, the correct answer is:
d. No more test to do.
Explanation: The p-value of the Kruskal-Wallis (KW) test is 0.265. Since it is greater than the given alpha level of 0.10, we fail to reject the null hypothesis. This means that there is no significant difference between the groups being compared. Therefore, no further tests, such as Dunn.test, Tukey test, or Levene test, are needed.
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Help!!!!!!!!!??!!??:?3?3?)38282)
The volume of the composite figure is solved to be
351 cubic ftHow to find the volume of the composite figureThe volume of the composite figure is calculated by dividing the figure into simpler figure and solve each volume. The volumes calculated is the added to give the volume of the composite figure
formula for volume = length x width x depth
First simpler part
volume = 10.5 ft x 3 ft x 6 ft
volume = 189 cubic ft
second simpler figure
volume = (9 - 3) ft x 4 1/2 ft x 6 ft
volume = 162 cubic ft
volume of the composite figure
= 189 + 162
= 351 cubic ft
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8. How many seconds are in 2 minutes?
Answer:
The answer is 120 seconds
Step-by-step explanation:
1 minutes---->60 seconds
2 minutes---->x seconds
x×1=2×60
x seconds =120 seconds
Answer:
120 seconds
Step-by-step explanation:
60 seconds per minute
60×2= 120 seconds
Find the area of this figure. Use π = 3.14.
Answer:
99.5in^2
Step-by-step explanation:
10×12/2=60
5×5×3.14/2=39.25
60+39.5=99.5
Answer: 99.2699
Step-by-step explanation:
Area of a Triangle- HeightxWidthx0.5
Area of a Circle- Pi times the radius squared. Since it is a half circle, divide the answer in half.
according to the national center for health statistics, 22.4% of adults are smokers. a random sample of 300 adults is obtained. in a random sample of 300 adults what is the probability that at least 50 are smokers?
Therefore, the probability of having at least 50 smokers in a sample of 300 adults is: 0.7467 or about 74.67%.
This problem can be solved using the binomial distribution, where X represents the number of smokers in a sample of size n = 300. We are interested in finding the probability that at least 50 are smokers, which can be written as:
P(X >= 50)
To calculate this probability, we need to use the binomial probability formula:
[tex]P(X = k) = C(n, k) * p^k * (1-p)^{(n-k)}[/tex]
where C(n, k) is the number of combinations of n items taken k at a time, p is the probability of success (being a smoker), and 1-p is the probability of failure (not being a smoker).
Since we are interested in at least 50 smokers, we need to calculate the probabilities for X = 50, 51, 52, ..., 300 and add them up. However, this would be very time-consuming and cumbersome. Fortunately, we can use the complement rule and calculate the probability of the complement event (i.e., fewer than 50 smokers), which is easier to compute:
P(X < 50) = P(X <= 49)
To calculate this probability, we can use a binomial probability calculator or a statistical software package. Using a binomial calculator, we find:
P(X <= 49) = 0.2533
Therefore, the probability of having at least 50 smokers in a sample of 300 adults is:
P(X >= 50) = 1 - P(X < 50) = 1 - 0.2533 = 0.7467
So the probability that at least 50 are smokers is 0.7467 or about 74.67%.
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pleas help me i need help −12(x + 5) = -10
Answer:
To solve for x in the equation −12(x + 5) = -10, we will use the following steps:
Distribute the -12 to the terms inside the parentheses:
-12x - 60 = -10
Add 60 to both sides of the equation to isolate the variable term:
-12x = 50
Finally, divide both sides of the equation by -12 to solve for x:
x = -50/12
Simplifying the answer, we get:
x = -25/6 or -4.1667 (rounded to four decimal places)
Step-by-step explanation:
For two programs at a university, the type of student for two majors is as follows
The probability that a student is a science major given that they are science student would be = 0.18.
How to calculate the probability of the science graduate students?To calculate the probability of the science major graduate student would need the use of the formula given below;
Probability = possible outcome/sample space
The possible outcome = 188
The sample space = 1073
The probability = 188/1073 = 0.18
Therefore, the probability that a student who is a graduate science student would be chosen at random would be = 0.18.
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ABCD is a square and E BFD is a parallelogram whose base is 3 cm the area of the square is 64 cm² . What are the lengths of the sides of the square? explain how you found your answer. What is the area of the Parallelogram? Use appropriate units In your answer and show how you found it.
The lengths of the sides of the square is 8 cm.
The area of this parallelogram is 24 cm².
How to calculate the area of a square?In Mathematics and Geometry, the area of a square can be calculated by using the following mathematical equation (formula);
A = x²
Where:
A represents the area of a square.x represents the side lengths of a square.For the lengths of the sides or side lengths of the square, we have:
64 = x²
x = √64
x = 8 cm.
Next, we would determine the area of this parallelogram;
Area of parallelogram = Area of square - 2(Area of triangle)
Area of parallelogram = 64 - 2(1/2 × (8 - 3) × 8)
Area of parallelogram = 64 - 40
Area of parallelogram = 24 cm².
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find the general solution of the differential equation1. dy/dx = 2x/y2. dy/dx = x(y+4)
The general solution for the second differential equation is y = [tex]e^[(1/2)x^2 + C2] - 4[/tex]
1. [tex]dy/dx = 2x/y[/tex]
Step 1: Separate variables. To do this, multiply both sides by y and divide both sides by dx:
[tex]y dy = 2x dx[/tex]
Step 2: Integrate both sides:
[tex]∫y dy = ∫2x dx[/tex]
Step 3: Evaluate the integrals:
[tex](1/2)y^2 = x^2 + C1[/tex], where C1 is the constant of integration.
Step 4: Solve for y to obtain the general solution:
[tex]y^2 = 2x^2 + 2C1\\y = ±√(2x^2 + 2C1)[/tex]
So, the general solution for the first differential equation is [tex]y = ±√(2x^2 + 2C1[/tex]).
2. [tex]dy/dx = x(y+4)[/tex]
Step 1: Separate variables. To do this, divide both sides by (y+4) and multiply both sides by dx:
[tex]dy / (y+4) = x dx[/tex]
Step 2: Integrate both sides:
[tex]∫[1 / (y+4)] dy = ∫x dx[/tex]
Step 3: Evaluate the integrals:
[tex]ln|y+4| = (1/2)x^2 + C2[/tex], where C2 is the constant of integration.
Step 4: Solve for y to obtain the general solution:
[tex]y+4 = e^[(1/2)x^2 + C2]\\y = e^[(1/2)x^2 + C2] - 4[/tex]
So, the general solution for the second differential equation is y = [tex]e^[(1/2)x^2 + C2] - 4[/tex]
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while working as a reace driver, jalen nedded to replace the trie on his car, tries are sold by the measurment around the outside of the tire. he measures the dimeter of the tire be 24 inches. what size tire does he need to by ( round to the nearest half inch)?
The size of the tire that he needed to buy is the one with a circumference of 75.4 inches.
Given that,
while working as a reace driver, Jalen needed to replace the tire on his car.
Tire is in the shape of a circle.
Diameter of the circle = 24 inches
Radius of the circle = 24/2 = 12 inches
We have to find the circumference of the tire.
Circumference = 2πr, where r is the radius.
Substituting,
Circumference = 2πr = 2π × 12 = 24π = 75.4 inches
Hence the size of the tire is 75.4 inches.
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how long would it take enrique to read that has a passage that has 800 words if he reads at the same speed? PLS HELP
Answer:
5 minutes
Step-by-step explanation:
The speed is the same, So its the ratio assuming that x minutes are required so,
[tex] \frac{640}{4} = \frac{800}{x} [/tex]
(Multiplication cross)
[tex] 640 \times = 800 \times 4[/tex]
[tex]x = \frac{800 \times 4}{640} [/tex]
Answer =
[tex]x = 5[/tex]
Hopefully this helps!! :)
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PLEASE HELP!
How would the graph look?
The equations of the graph from the figure are y = 4 and y = -2
Explaining the equation of the graph from the look?From the question, we have the following parameters that can be used in our computation:
The graph
On the graph, we can see that
We have two horizontal lines that pass through the points y = 4 and y = -2
This means that the equations represented on the graph are y = 4 and y = -2
So, we can conclude that none of the options are true from the options
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what prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?
To determine the appropriate prefix multiplier for reporting a measurement of 5.57 × 10^(-5) m, we need to find a suitable metric prefix that would make the number easier to read and understand.
1. Convert the original measurement (5.57 × 10^(-5) m) to a more suitable metric unit.
2. Compare the metric prefixes and their corresponding multipliers to find the best fit.
In this case, the closest metric prefix for 10^(-5) is "micro" (symbol: µ), which has a multiplier of 10^(-6). To use this prefix, we need to convert the measurement to micrometers (µm).
3. Divide the original measurement by the multiplier of the chosen prefix: (5.57 × 10^(-5) m) / (10^(-6) µm/m) = 55.7 µm.
So, the appropriate prefix multiplier for reporting the measurement of 5.57 × 10^(-5) m is "micro," and the measurement can be reported as 55.7 µm.
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Complete the following tasks on the plane. Using a blue pencil, shade the region that contains points that are more than 2 1/2 units and less than 3 1/4 units from the y-axis.
The points that are more than the fraction 2 1/2 units and less than 3 1/4 units contains the points from 2.5 to 3.25.
Given measurements are 2 1/2 and 3 1/4.
We have to shade the region in between these two points.
Both are written in mixed fractional form.
This can be written in decimal as,
2 1/2 = 2 + 1/2 = 2 +6 0.5 = 2.5
3 1/4 = 3 + 1/4 = 3 + 0.25 = 3.25
Hence the shaded region will contain the points from 2.5 to 3.25.
2.5 is at the exact middle of 2 and 3.
3.25 is at 1/4th distance of 3 and 4. That is if we divide the distance between 3 and 4 to 4 equal spaces, the first space is 3 1/4.
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Question 5: find all of the arcs and angles
The measure of arc angle DC is 60.
The measure angle A is 45⁰.
The measure angle B is 50⁰.
The measure angle C is 45⁰.
The measure angle D is 50⁰.
What is the measure of the angles?The measure of arc angle DC is calculated as follows;
arc DC = 360 - (100 + 110 + 90) (sum of angles in a circle)
arc DC = 60
The measure angle A is calculated as follows;
m∠A = ¹/₂( arc BC ) (intersecting chord theorem)
m∠A = ¹/₂ x 90
m∠A = = 45⁰
The measure angle B is calculated as follows;
m∠B = ¹/₂( arc AD ) (intersecting chord theorem)
m∠B = ¹/₂ x 100
m∠B = 50⁰
The measure angle C is calculated as follows;
m∠C = m∠A (vertical opposite angles)
m∠C = = 45⁰
The measure angle D is calculated as follows;
m∠D = m∠B (vertical opposite angles)
m∠C = = 50⁰
Learn more about chord angles here: brainly.com/question/23732231
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