The surface area of the remaining solid left out after the cone is cut-out is approximately 127.23 square centimeters.
The maximum size of the cone that can be cut out from the cube is such that the base of the cone is a circle inscribed in the face of the cube.
The diameter of the circle is equal to the edge of the cube.
The diameter of the base of the cone is 14 cm, and its radius is 7 cm.
The height of the cone can be found using the Pythagorean.
The diagonal of the face of the cube is:
[tex]d = \sqrt{(14^2 + 14^2)} = 14 \times \sqrt(2)[/tex]
The height of the cone is equal to the side of the cube minus the radius of the base of the cone:
h = 14 - 7 = 7
The volume of the cone is:
V_cone = (1/3) × pi × r² × h
V_cone = (1/3) × pi × 7² × 7
V_cone = (1/3) × 343 × π
V_cone = 343/3 π
The surface area of the remaining solid left out after the cone is cut-out is the surface area of the cube minus the surface area of the cone.
The surface area of the cube is:
S_cube = 6 × (14)²
S_cube = 1176
The surface area of the cone can be found using the Pythagorean theorem again, this time to find the slant height of the cone:
s = sqrt(r² + h²)
s = sqrt(7² + 7²)
s = 7 × √(2)
The lateral surface area of the cone is:
A_lateral = pi × r × s
A_lateral = pi × 7 × 7 × √(2)
A_lateral = 49 × pi × √(2)
The surface area of the remaining solid left out after the cone is cut-out is:
S_remaining = S_cube - A_lateral
S_remaining = 1176 - 49 × pi × √(2)
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Suppose that two relations R(A, B) and S(A, B) have exactly the same schema. Consider the following equalities in relational algebra, which of the above equalities hold in relational algebra? why?
I. R â© S = R - (R - S)
II. R â© S = S - (S - R)
III. R â© S = R NATURAL-JOIN S
IV. R â© S = R x S
The equality that holds in relational algebra is III. R â© S = R NATURAL-JOIN S. In conclusion, the equalities I and II hold in relational algebra, while equalities III and IV do not.
To explain why, let's first review what each of the equalities means:
I. R â© S = R - (R - S) means that the result of R â© S (which is the set of all tuples that appear in both R and S) is equal to the set of tuples in R that do not appear in S.
II. R â© S = S - (S - R) means that the result of R â© S is equal to the set of tuples in S that do not appear in R.
III. R â© S = R NATURAL-JOIN S means that the result of R â© S is equal to the set of all tuples that have matching values for all attributes in both R and S.
IV. R â© S = R x S means that the result of R â© S is equal to the Cartesian product of R and S (i.e., all possible combinations of tuples from R and S).
Now, we know that R and S have exactly the same schema (i.e., the same attributes), so all of the equalities are possible. However, only III. R â© S = R NATURAL-JOIN S is guaranteed to hold, because it matches the definition of the intersection of two sets.
In contrast, I and II only work if one relation is a subset of the other (which is not necessarily true in this case), and IV gives us a much larger result set than we want (since it includes all possible combinations of tuples, not just the ones with matching values for all attributes).
Let's analyze each of the given equalities to determine which ones hold in relational algebra.
I. R ∪ S = R - (R - S)
This equality holds in relational algebra. The expression on the right side, R - (R - S), represents the union of R and S. It works by removing the difference between R and S from R, thus combining the two relations.
II. R ∪ S = S - (S - R)
This equality also holds in relational algebra. It is the same as the first equality, with the roles of R and S reversed. In this case, the expression on the right side, S - (S - R), represents the union of R and S by removing the difference between S and R from S.
III. R ∪ S = R NATURAL-JOIN S
This equality does not hold in relational algebra. The union operation (R ∪ S) combines all tuples from R and S, whereas the natural join (R NATURAL-JOIN S) combines only tuples with matching values in the shared attributes (A, B) from R and S.
IV. R ∪ S = R x S
This equality does not hold in relational algebra. The union operation (R ∪ S) combines all tuples from R and S, whereas the Cartesian product (R x S) generates all possible combinations of tuples from R and S, resulting in a much larger relation.
In conclusion, the equalities I and II hold in relational algebra, while equalities III and IV do not.
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If n(U)= 80, n(A) = 3x-2, n (B) = 3x, n(AUB) = x and n(ANB) = 5, then by
drawing a Venn diagram, and find
(i) the value of x.
(ii) the value of n(A).
To find the value of x and n(A), we can use the formula:
n(AUB) = n(A) + n(B) - n(ANB)
We are given that n(U) = 80, n(A) = 3x - 2, n(B) = 3x, n(AUB) = x, and n(ANB) = 5. Substituting these values into the formula above, we get:
x = (3x - 2) + 3x - 5
Simplifying this equation, we get:
x = 6x - 7
Rearranging this equation, we get:
5x = 7
x = 7/5
Therefore, x = 1.4.
To find n(A), we can use the formula:
n(A) = n(AUB) + n(ANB) - n(B)
Substituting the values we know, we get:
n(A) = x + 5 - 3x
Simplifying this equation using the value of x we found above, we get:
n(A) = 1.4 + 5 - 4.2
n(A) = 2.2
Therefore, n(A) = 2.2.
To draw the Venn diagram, we can start by drawing a rectangle to represent the universal set U, and then draw two overlapping circles inside the rectangle to represent sets A and B. We can label the intersection of the circles with the number 5, to represent n(ANB). We can label the number x inside the circle for A to represent n(AUB), and we can label the circle for B with the number 3x to represent n(B). We can then use the formulas above to find the values of x and n(A) and label the appropriate areas in the Venn diagram.
Assume the distribution of IQ scores for adults can be modeled with a normal distribution with a mean score of 100 points and a standard deviation of 10 points. According to the Empirical Rule or 68-95-99.7 Rule, the middle 68% of all adults will have an IQ score between 90 and _______ points.
According to the Empirical Rule or 68-95-99.7 Rule, the middle 68% of all adults will have an IQ score between 90 and 110 points.
This is because the Empirical Rule states that for a normal distribution:
approximately 68% of the data falls within one standard deviation of the meanapproximately 95% of the data falls within two standard deviations of the meanapproximately 99.7% of the data falls within three standard deviations of the meanIn this case, the mean is 100 and the standard deviation is 10. So, one standard deviation below the mean is 90 (100-10) and one standard deviation above the mean is 110 (100+10). Therefore, the middle 68% of all adults will have an IQ score between 90 and 110 points.
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A triangular prism is 11.2 meters long and has a triangular face with a base of 11 meters and
a height of 11 meters. What is the volume of the triangular prism?
cubic meters
Answer:
The volume of the triangular prism is 677.6 cubic meters.
Step-by-step explanation:
The formula for the volume of a triangular prism is:
[tex]\sf\qquad\dashrightarrow Volume \: (V) = \dfrac{1}{2} \times b\times h \times l [/tex]
where:
b is the base of the triangular faceh is the height of the triangular facel is the length of the prismSubstituting the given values, we have:
[tex]\sf:\implies Volume \: (V) = \dfrac{1}{2} \times 11 \times 11 \times 11.2[/tex]
[tex]\sf:\implies \boxed{\bold{\:\:Volume \: (V) = 677.6\: meters^3\:\:}}\:\:\:\green{\checkmark}[/tex]
Therefore, the volume of the triangular prism is 677.6 cubic meters.
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The radius of a circle is 3 cm. What is the measure in radians of the angle subtended by an arc 21pi/8 cm long
Answer:
7pi/8
Step-by-step explanation:
Well the arc is 21pi/8 cm. Our formula to find the length of arc is r × theta(angle). Let's take the angle as x.
R × x = 21pi/8
x = 21pi/8 ÷ R = 21pi/8 ÷ 3 = 7pi/8 rad
What value does the chance model assert for the long-run proportion?
The chance model asserts that the long-run proportion of an event is equal to the probability of that event. In other words, if we repeatedly conduct an experiment under the same conditions, the proportion of times that the event occurs over the long run should converge to the probability of the event.
For example, if we flip a fair coin many times, the chance model asserts that the proportion of heads should approach 0.5 as the number of coin flips increases. This is because the probability of flipping heads on a fair coin is 0.5, and over the long run, the proportion of heads should converge to this probability.
The chance model is a fundamental principle in probability theory, and it is used to make predictions about the outcomes of random events. It provides a way to quantify the uncertainty associated with an event and to reason about the likely outcomes of an experiment.
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Can anyone help me with this problem? It is sophomore integrated math 2
The equation of the circle with centre C and passing through points N and W is x² + y² = 400.
Deriving the Expression for Equation of a CircleFrom the question, we know the following:
- point C is the midpoint of WN,
- CN = CW = 20
- radius of the circle = 20.
To write the equation of this circle, we need to use the standard form equation of a circle:
(x - h)² + (y - k)² = r²
where
(h,k) = centre of the circle,
r is its radius.
Since the centre of the circle is at the origin (0, 0), we can simplify the equation to:
x² + y² = r²
Now we just need to find the value of r. Since we know that the radius is 20 units, we can substitute r = 20 into the equation to get:
x² + y² = 20²
Simplifying further, we get:
x² + y² = 400
Therefore, the equation of the circle with center C and passing through points N and W is:
x² + y² = 400
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if 1/2 gallon of milk costs $1.12, what is the cost per pint
Answer: $0.28
Step-by-step explanation:
A gallon is equal to 8 pints, so half a gallon is equal to 4 pints. Therefore, the cost per pint of milk is $0.28. ( 1.12 / 4 = 0.28)
To increase the F value in ANOVA ________________.
a. increase within group variability
b. decrease within group variability
c. decrease between group variability
d. fudge the data.
Answer:
carret answer is :b
Step-by-step explanation:
the between-group variation is larger than your within-group variation
Dos números tales que el quíntuple del primero menos el triple de el segundo de como resultado 15 y diez veces el primero menos seis veces el segundo de como resultado 60
The first number (x) is equal to 4.5 or 9/2.
The second number (x) is equal to -2.5 or 5/2.
How to determine the two unknown numbers?In order to solve this word problem, we would assign a variable to the two unknown numbers, and then translate the word problem into algebraic equation as follows:
Let the variable x represent the first unknown number. Let the variable x represent the second unknown number.This ultimately implies that, translating the word problem into an algebraic equation based on the information provided above, we have the following system of equations;
5x + 3y = 15
10x - 6y = 60
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Complete Question:
Two numbers such that five times the first minus three times the second resulting in 15 and ten times the first minus six times the second resulting in 60.
fill in the missing values in the table below
The missing values on the table are given as follows:
D. 4, 80%.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
One of the five outcomes represent a one, hence the outcomes that do not represent a one is given as follows:
5 - 1 = 4.
Hence the probability is given as follows:
p = 4/5 x 100%
p = 80%.
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two functions f and g are defined in the figure below
find the domain and range of the composition g ºf , write the answer in set notation
The domain and range of the composition g ºf are Domain = 0 3 4 5 7 9 and Range = 9
Find the domain and range of the composition g ºfFrom the question, we have the following parameters that can be used in our computation:
The ordered pairs
On the ordered pairs, we have
g o f
The expression g o f means that the function takes its input from f(x)
So, we have the domain to be
Domain = 0 3 4 5 7 9
Next, we have
g(f(0)) = 8
g(f(3)) = 8
g(f(4)) = 8
g(f(5)) = DNE
g(f(7)) = DNE
g(f(9)) = DNE
So, we have
Range = 9
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Solve for x using the same base method
3^x-20=27
You shloud get x=23
SHOW WORK
The value of x is 23.
We have
3ˣ⁻²⁰ = 27
Now, we can write 27 as the cube of 3.
i.e., 27 = 3 x 3 x 3= 3³
So, 3ˣ⁻²⁰ = 27
3ˣ⁻²⁰ = 3³
As, base of above exponent is same then comparing the power as
x -20 = 3
x =3+20
x= 23
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When\:sharon\:went\:bowling,\:her\:scores\:were\:108,\:97,\:and\:152. \:if\:she\:bowls\:a\:4th\:game,\:what\:will\:her\:score\:need\:to\:be,\:to\:give\:her\:an\:avergae\:of\:114
Sharon needs to score at least 99 in her fourth game to have an average score of 114 for all four games.
We can start by using the formula for the average (arithmetic mean):
average = sum of scores/number of scores
We know the average she wants to achieve is 114, and she has already bowled 3 games with scores of 108, 97, and 152. Therefore, the sum of her scores so far is:
sum of scores = 108 + 97 + 152 = 357
We also know that she wants to have an average of 114 after bowling four games, so we can write:
114 = (357 + x) / 4.
where x is the score she needs to achieve in her fourth game.
Multiplying both sides by 4, we get:
456 = 357 + x
Subtracting 357 from both sides, we get:
x = 99.
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An experiment compares the taste of a new spaghetti sauce with the taste of a commercially successful sauce readily available in grocery stores. Each of 10 tasters tastes both sauces (in random order) and says which tastes better. This is called a
The experiment described is an example of a paired comparison or paired preference test.
What is a taste comparison experiment between a new and commercially successful spaghetti sauce involving 10 tasters called?In this type of test, each participant compares two items and indicates a preference for one over the other. In this case, the items being compared are two spaghetti sauces.
The test is called "paired" because each participant tastes both sauces, and the order in which they taste them is randomized to avoid bias.
The test is also "paired" because each participant's preference for one sauce is directly compared to their preference for the other sauce, rather than relying on an absolute ranking or rating system.
By comparing the number of times each sauce is preferred, the researchers can draw conclusions about which sauce is preferred overall.
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when to use the one mean Z test for small samples of size less than 15
The one mean Z test can be used for small samples of size less than 15 when the population standard deviation is known.
The one-mean z-test is a hypothesis test that is used to test a hypothesis about the mean of a population when the population standard deviation is known, and the sample size is large (typically greater than 30).
When the sample size is small (less than 15), the one-mean z-test is not appropriate because the assumptions of the test may not be met.
When the sample size is small, we typically use a t-test instead of a z-test to test a hypothesis about the population mean.
Specifically, we use a one-sample t-test when the population standard deviation is unknown, and the sample size is small (typically less than 30).
The one-sample t-test uses a t-distribution to calculate the p-value and test the null hypothesis about the population mean.
It is important to note that the sample size of 15 is not a hard and fast rule for when to switch from the z-test to the t-test.
The decision of which test to use depends on the specific context and the assumptions of the test.
In general, if the population standard deviation is unknown and the sample size is small (less than 30), then we use the t-test. If the population standard deviation is known and the sample size is large (greater than 30), then we use the z-test.
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Hermite polynomials are defined recursively as H(0, x) = 1, H(1, x) = 2x, and for n > 1 : H(n, x) = 2xH(n − 1, x) − 2(n − 1)H(n − 2, x). Use memoization to define a recursive function H which takes on input an int n and a double x. H(n, x) returns a double, the value of the n-th Hermite polynomial at x.
Hermite polynomials, denoted by H(n, x), are a family of orthogonal polynomials with important applications in mathematical physics and probability theory. They are defined recursively, with base cases H(0, x) = 1 and H(1, x) = 2x. For n > 1, the recursive relation is given by H(n, x) = 2xH(n-1, x) - 2(n-1)H(n-2, x).
To implement a recursive function H that calculates the n-th Hermite polynomial at x using memoization, you can use a dictionary to store previously computed values of the polynomial. This will help in avoiding redundant computations and improve the efficiency of the algorithm.
Here's a Python implementation:
```python
def H(n, x, memo={}):
if n == 0:
return 1
elif n == 1:
return 2 * x
else:
if (n, x) not in memo:
memo[(n, x)] = 2 * x * H(n - 1, x) - 2 * (n - 1) * H(n - 2, x)
return memo[(n, x)]
```
This function takes an integer n and a double x as input and returns a double representing the value of the n-th Hermite polynomial at x. The function uses memoization to optimize performance, storing previously computed values in a dictionary called memo. This way, when encountering the same inputs again, the function can return the already computed value instead of performing the calculations anew.
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You are given two binary trees root1 and root2.
Imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge the two trees into a new binary tree. The merge rule is that if two nodes overlap, then sum node values up as the new value of the merged node. Otherwise, the NOT null node will be used as the node of the new tree.
Return the merged tree.
Note: The merging process must start from the root nodes of both trees.
The problem requires merging two binary trees by summing up the values of overlapping nodes. A recursive solution is used to traverse the trees and merge them.
rees.
Here's a Python implementation of the solution:
```
class TreeNode:
def __init__(self, val=0, left=None, right=None):
self.val = val
self.left = left
self.right = right
def mergeTrees(root1, root2):
if not root1:
return root2
if not root2:
return root1
merged_node = TreeNode(root1.val + root2.val)
merged_node.left = mergeTrees(root1.left, root2.left)
merged_node.right = mergeTrees(root1.right, root2.right)
return merged_node
```
The solution uses a recursive approach to merge the two trees. At each recursive call, we check if either of the roots is null. If one of them is null, we return the other root as it is.
If both roots are not null, we create a new node with the sum of their values. We then recursively call the function to merge the left subtrees and right subtrees of both roots. We set the left and right children of the merged node to the result of the recursive calls.
Finally, we return the merged node.
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Alina and Sophia can finish a plowing job in six hours if they work together . Alina can do the job in 10 hours by herself . how long would it take Sophia to finish her job alone
What is the likelihood of rolling an even number on a die
Answer:
50%
Step-by-step explanation:
We Know
There are 6 numbers on a die: 1, 2, 3, 4, 5,6
There are 3 even numbers.
What is the likelihood of rolling an even number on a die?
3/6 = 1/2 = 50%
So, there is a 50% chance of rolling an even number on a die.
What is calculated using the formula (statistic−mean of null distr.)/(SD of null distr.)?
The value of the standardized statistic, z.
The standardized statistic, z, is calculated using the formula (statistic−mean of null distr.)/(SD of null distr.).
Can you explain how the standardized statistic, z, is used in statistics?The formula (statistic−mean of null distr.)/(SD of null distr.) is used to calculate the value of the standardized statistic, z.
The standardized statistic, z, is a measure of the number of standard deviations a data point is from the mean of the null distribution. It is a commonly used metric in statistical analysis, particularly in hypothesis testing and confidence interval calculations.
By comparing the value of a statistic to the expected value under the null hypothesis, researchers can determine the likelihood of a particular result and make inferences about the underlying population. Understanding the standardized statistic, z, is a fundamental concept in statistics and is essential for anyone working with data.
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[tex]\frac{v}{22\\}[/tex] - 0.1 = 7.4
Answer: 165
Step-by-step explanation:
Suppose a number cube is rolled. What is the probability of rolling a number greater than 4?
The probability of rolling a number greater than 4 on a number cube is 1/3 or 0.33.
A number cube is a cube-shaped object with six sides, numbered from 1 to 6. When rolling the number cube, there are six possible outcomes, each with an equal chance of occurring. Since we are interested in finding the probability of rolling a number greater than 4, we need to determine how many of the six possible outcomes meet this condition.
There are two possible outcomes that satisfy the condition: rolling a 5 or rolling a 6.
So, as there are two outcomes = 2/6
= 1/3
Therefore, the probability of rolling a number greater than 4 is 1/3.
This can also be simplified to 0.33 or 33.3% as a decimal or percentage, respectively.
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The No-Zone area is a) An area where pedestrians cannot cross the street b) An area where vehicles are not allowed to park c) The danger areas around a truck where there are blind spots for the driver d) None of the above
Answer:
The correct answer is c)
Step-by-step explanation:
The danger areas around a truck where there are blind spots for the driver.
The No-Zone area, also known as the blind spot or danger zone, is the area around a large vehicle such as a truck or bus where the driver's visibility is limited or obstructed. This area includes the sides of the vehicle, particularly towards the rear, as well as directly in front of the vehicle. Pedestrians and other vehicles should avoid driving or walking in the No-Zone area to avoid accidents.
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Test yourself
The parity of an integer indicates whether the integer is ____________.
Answer:
even or odd
Step-by-step explanation:
The parity of an integer refers to whether the integer is even or odd. For instance, 5 has odd parity and 28 has even parity.
The _____ lists the relative probability of a risk occurring and the relative impact of the risk occurring.
The Risk Matrix lists the relative probability of a risk occurring and the relative impact of the risk occurring.
What is used to list the relative probability of a risk occurring and the relative impact of the risk occurring?The Risk Matrix is a tool commonly used in risk management to assess and prioritize risks based on their likelihood of occurrence and potential impact.
It typically consists of a two-dimensional grid, with one axis representing the likelihood of the risk occurring, and the other axis representing the potential impact of the risk.
Each cell in the grid represents a specific level of risk, and is typically color-coded or labeled to indicate the severity of the risk. By using a Risk Matrix.
Organizations can prioritize their risk management efforts by focusing on the risks that are most likely to occur and have the greatest potential impact.
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Using only TWO of the numbers, write a division expression with a quotient greater than 10.
Answer:
-10÷(-2/5)
Step-by-step explanation:
-10÷(-2/5)
=10÷(2/5)
=10 (5/2)
= 50/2
=25
A particular instrument departure procedure requires a minimum climb rate of 210 feet per NM to 8,000 feet. If you climb with a ground speed of 140 knots, what is the rate of climb required in feet per minute
The required rate of climb is approximately 489.3 feet per minute.
To determine the required rate of climb in feet per minute, follow these steps:
You're given a minimum climb rate of 210 feet per nautical mile (NM) and a ground speed of 140 knots.
Convert the ground speed to nautical miles per minute by dividing by 60:
(140 knots) / 60 minutes = 2.33 NM/minute
Multiply the minimum climb rate by the ground speed in NM/minute:
(210 feet/NM) × (2.33 NM/minute) = 489.3 feet/minute.
To calculate the rate of climb required in feet per minute, we need to convert the climb rate of 210 feet per NM to feet per minute.
One nautical mile is equal to 6,076 feet, so a climb rate of 210 feet per NM is equivalent to:
210 feet/NM x 6,076 feet/NM = 1,278.36 feet per minute.
This means that you need to climb at a rate of at least 1,278.36 feet per minute to meet the minimum climb requirement.
To verify if this requirement is being met, we need to calculate the ground distance covered during the climb to 8,000 feet.
The climb distance required to reach 8,000 feet is:
8,000 ft / 210 ft/NM = 38.1 NM.
Therefore, to cover this distance at a ground speed of 140 knots, we need to calculate the time required:
38.1 NM / 140 knots = 0.272 hours = 16.32 minutes
So, the required climb rate in feet per minute to meet the minimum climb requirement would be:
8,000 ft / 16.32 min ≈ 490 feet per minute
Since the calculated rate of climb of 490 feet per minute is greater than the minimum required climb rate of 1,278.36 feet per minute, the climb requirement is being met.
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In ATUV, v = 180 cm, t = 820 cm and ZU=33°. Find the area of ATUV, to the
nearest square centimeter.
The a is a triangle and the z is one too same for the other A
The area of the triangle TUV is approximately 40,194 cm²
Calculating the area of a triangleFrom the question, we are to calculate the area of triangle TUV
From the given information, we have that
v = 180 cm
t = 820 cm
and ∠U = 33°
Given a triangle ABC, the area of the triangle can be calculated by either of these formulas:
Area = 1/2 ab × sin (C)
Area = 1/2 ac × sin (B)
Area = 1/2 bc × sin (A)
Thus,
The area of triangle TUV = 1/2 vt × sin (U)
Substitute the parameters into the formula
The area of triangle TUV = 1/2 × 180 × 820 × sin (33°)
The area of triangle TUV = 73800 × sin (33°)
The area of triangle TUV = 73800 × sin (33°)
The area of triangle TUV = 40194.36078
The area of triangle TUV ≈ 40,194 cm²
Hence,
The area of the triangle is 40,194 cm²
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Assume that particular professional baseball team has 12 pitchers, 6 infielders, and 7 other players. if 3 players’ names are selected at random determine the probability that 2 are pitchers and 1 is an infielder.
The probability of selecting 2 pitchers and 1 infielder is 0.075 or 7.5%.
The total number of players in the team is 12 + 6 + 7 = 25.
The probability of selecting a pitcher on the first draw is 12/25.
Given that a pitcher has been selected, the probability of selecting another pitcher on the second draw is now 11/24 (since one pitcher has already been selected and there are now only 11 pitchers left).
The probability of selecting an infielder on the third draw is 6/23 (since there are now only 6 infielders left out of a total of 23 players remaining).
Therefore, the probability of selecting 2 pitchers and 1 infielder in any order is:
(12/25) x (11/24) x (6/23) x 3!
The factor of 3! accounts for the fact that the 2 pitchers and 1 infielder can be selected in any order.
Simplifying this expression gives:
(12 x 11 x 6)/(25 x 24 x 23) = 0.075
Therefore, the probability of selecting 2 pitchers and 1 infielder is 0.075 or 7.5%.
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