Therefore, the number of ways to choose a committee of size 10 with at least 2 men is: 961379655
We are to find the number of ways to choose a committee of size 10 with at least 2 men if there are 30 women in the club and 20 men in the club using set difference. We can use the following formulas: (1) A set difference B = {elements of A that are not in B} (2) The number of ways to choose k elements from n elements is represented by nCk.
(3) The complement of an event E is the set of all outcomes in the sample space that are not included in the outcome of E.(4) If E is an event, then P(E) represents the probability of E happening.(5) P(E') + P(E) = 1 (where E' is the complement of E).
To choose a committee of size 10 with at least 2 men, we can first find the total number of committees possible (which includes committees with 0, 1 or 2 men) and then subtract the committees that do not have at least 2 men. So, the total number of ways to choose a committee of size 10 is 50C10. Using the formula nCk = n!/k!(n-k)!, we can write it as follows: 50C10 = 50! / 10!40! = 10272278170.
The number of ways to choose a committee of size 10 with no men is 30C10.Using the formula nCk = n!/k!(n-k)!, we can write it as follows:30C10 = 30! / 10!20! = 30045015. The number of ways to choose a committee of size 10 with exactly 1 man is (20C1) * (30C9).Using the formula nCk = n!/k!(n-k)!, we can write it as follows:(20C1) * (30C9) = 20! / 1!19! * 30! / 9!21! = 47152200.
The number of ways to choose a committee of size 10 with exactly 2 men is (20C2) * (30C8). Using the formula nCk = n!/k!(n-k)!, we can write it as follows:(20C2) * (30C8) = 20! / 2!18! * 30! / 8!22! = 47502000. Therefore, the number of ways to choose a committee of size 10 with at least 2 men is:50C10 - 30C10 - (20C1) * (30C9) - (20C2) * (30C8)10272278170 - 30045015 - 47152200 - 47502000 = 961379655 Ways.
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Explain how you can check your answer for 8 divided by 1/5
The value that can be gotten from expression of 8 divided by 1/5 is 40.
How can the division be determined?In mathematics, division is an arithmetic operation that involves splitting a quantity or a number into equal parts or groups. It is the inverse operation of multiplication.
The division symbol is usually represented by a forward slash (/) or a division sign (÷). It is represented as "a ÷ b" or "a/b," where "a" is the dividend, "b" is the divisor, and the result is the quotient.
When we divide one number by another, we are essentially finding out how many times the divisor can fit into the dividend. For example, if we divide 10 by 2, we are asking how many times 2 can fit into 10. The answer is 5, so 10 divided by 2 is 5.
Given that 8 divided by 1/5, which can be expressed as ;
8 / (1/5)
= 8÷(1/5)
=8 * 5/1= 40
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n ice cream company is interested to see if the proportion of people in this town who like chocolate ice cream is significantly different than the national average. what is the hypothesis test to be done?
Option B) H o: p = 0.5, H₁: p ≠ 0.5. This is a two-tailed test where the null hypothesis states that the proportion of people in the town who like chocolate ice cream is equal to the national average of 0.5.
The alternative hypothesis states that the proportion is either greater than or less than 0.5. This test is appropriate because it is comparing a single proportion (people in the town who like chocolate ice cream) to a known population proportion (the national average). The test statistic used would be a z-score, calculated using the sample proportion and the population proportion.
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Three times the sum of two numbers is 15. One of the numbers is 9 more than one-third of the other number. How can you use a system of equations to find the two numbers
The values of the two numbers of the system of equations is x = 6 and y = -9.
First, we are told that "three times the sum of two numbers is 15". This can be written as:
3(x + y) = 15
Next, we are given that "one of the numbers is 9 more than one-third of the other number". We can break this down into two parts:
"one of the numbers": this refers to either x or y, but we don't know which one yet. Let's assume that it refers to x.
"9 more than one-third of the other number": this means that we take one-third of the other number (y), add 9, and that gives us x. In equation form, this is:
x = (1/3)y + 9
Now we have two equations with two variables:
3(x + y) = 15
x = (1/3)y + 9
We can use these equations to solve for x and y. There are different methods for solving a system of equations, but one common method is substitution.
Using the second equation, we can solve for x in terms of y:
x = (1/3)y + 9
3x = y + 27
y = 3x - 27
Now we can substitute this expression for y into the first equation:
3(x + y) = 15
3(x + 3x - 27) = 15
Simplifying this equation gives:
12x = 72
x = 6
Finally, we can use the equation we found for y in terms of x to find the value of y:
y = 3x - 27
y = 3(6) - 27
y = -9
So the two numbers are x = 6 and y = -9.
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a professor at a local university noted that the exam grades of her students were normally distributed with a mean of 68 and a standard deviation of 17. according to the professor's grading scheme only the top 12.3 percent of her students receive grades of a. what is the minimum score needed to receive a grade of a? write your answer to two decimal points.
A minimum score of 88.95 is required to receive an "A" grade on the exam.
To determine the minimum score required to receive an "A" grade on an exam, we must first understand the meaning of standard deviation and mean. The mean is the average of a set of values, whereas the standard deviation is a measure of how far apart the values are from the mean. The minimum score required to receive an "A" grade is determined by calculating the z-score that corresponds to the top 12.3 percent of exam scores.
The formula for calculating the z-score is given as: z = (x - μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation. Solving for z, we have: z = invNorm(1 - 0.123) = invNorm(0.877) ≈ 1.15. The inverse normal distribution function is used to determine the value of z that corresponds to the area to the right of the z-score. We can then use the formula for the z-score to solve for the raw score (x):
x = zσ + μ
Substituting the values we have, we get:
x = 1.15(17) + 68 ≈ 88.95
Therefore, a minimum score of 88.95 is required to receive an "A" grade in the exam.
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Quick
Check
Sorting the Number of possible mangies
Sort each set of triangle measurements into the appropriate category for number of possible triangles.
No Triangles
One Triangle
Many Triangles
5,15,160
45°, 45°, 90°
2,8,10
7,24,25
30°,85,60"
No triangles: angle 30°,85°,60° and sides 2,8,10
One triangle: sides 7,24,25
many triangles: angle 5°,15°,160° and angle 45°, 45°, 90°
Define triangleA triangle is a geometric shape that is formed by connecting three points in a plane with straight lines. It has three sides, three angles, and three vertices (or corners). The sum of the angles in a triangle is always 180 degrees. Triangles are classified based on the lengths of their sides and the measures of their angles.
No Triangles:Sum of angles should not be equal to 180°
Sum of two sides of triangle is not always greater than third side.
30°+85°+60°=175°<180°
Hence, this angle do not form triangle
2+8=10
Hence, this sides do not form triangles.
One triangle:Sum of two sides of triangle is always greater than third side.
7+24>25
Hence, this sides do not form triangles.
many triangles:Sum of angles should be equal to 180°
5°+15°+160°=180°
Hence, this angle form triangle
45°+45°+90°=180°
Hence, this angle form triangle.
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Image is attached below.
In a toy factory, 500 toys are made per minute. How many toys will be made in an hour??
Answer:
3000
Step-by-step explanation:
you would multiply 500 times 60 because there are 60 minutes per hour
Marjane wants to create a set of data with 6 values. She wants the mode to be as good as the median to represent the data set. Which set of data best represents what Marjane could create?
24, 24, 25, 29, 29, 29
24, 25, 26, 27, 30, 30
24, 25, 25, 25, 26, 26
24, 24, 25, 26, 26, 27
As per the median, the set of data that fulfilling Marjane's requirement is 24, 25, 25, 25, 26, 26 (option c).
In statistics, data is a collection of numbers or values that represent a particular phenomenon. One way to measure central tendency, or the typical or representative value of the data, is through the median and the mode.
The median is the middle value when the data is arranged in numerical order, and the mode is the value that appears most frequently.
The third set of data is 24, 25, 25, 25, 26, 26.
The median is the middle value, which is also (25+25)/2 = 25.
The mode is the value that appears most frequently, which is 25.
Therefore, the mode and median are the same, fulfilling Marjane's requirement.
Therefore, the correct option is (c).
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Pls helppppppppppppp
7x + 2y = 6
7x + 2y = 8
Porcupines can cause damage to wood structures by chewing them. Researchers studied a liquid repellent designed to reduce such damage. A sample of 20 wooden blocks of the same size were treated with the repellent and left outside in an area where porcupines are known to live. After a certain amount of time, the blocks were inspected for the number of porcupine teeth marks visible. The data were used to create the 95 percent confidence interval (4.9,5.8).Which of the following claims is supported by the interval?The mean number of porcupine teeth marks on all wooden blocks treated with the repellent is less than 6.
The given interval suggests that the mean number of porcupine teeth marks on all wooden blocks treated with the repellent is less than 6 since the upper limit of the interval is 5.8. This claim falls within the given interval and is supported by the data. Therefore, we can say that the mean number of porcupine teeth marks on all wooden blocks treated with the repellent is less than 6 based on the 95 percent confidence interval (4.9,5.8).
In the given scenario, a sample of 20 wooden blocks treated with a liquid repellent designed to reduce damage caused by porcupines were left outside in an area where porcupines are known to live. After some time, the blocks were inspected for the number of porcupine teeth marks visible. The data collected was then used to create the 95 percent confidence interval (4.9,5.8).
The 95 percent confidence interval can be defined as a range of values that we can be 95 percent confident the true population parameter falls within. In this case, the true population parameters is the mean number of porcupine teeth marks on all wooden blocks treated with the repellent.
From the given interval, we can conclude that we are 95 percent confident that the true mean number of porcupine teeth marks on all wooden blocks treated with the repellent is between 4.9 and 5.8.
Therefore, any claim that falls within this interval is supported by the data.
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How many cubic meters of material are there in a conical pile of dirt that has radius 9 meters and height 3? Use 3.14 for Pi.
The conical mound of soil therefore contains 254.34 cubic meters of substance.
Where can I discover volume?How much a receptacle contains can be determined by looking at its volume. Volume is calculated as follows: volume = length x breadth x height.
The following is the algorithm for a cone's volume:
V = (1/3)πr²ⁿ
where,
V is the volume r is the radius n is the height π is the value of pi.Substituting the given values, we get:
V = (1/3) x 3.14 x 9²*³
V = 254.34 cubic meters
Therefore, there are 254.34 cubic meters of material in the conical pile of dirt.
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A college student borrows $360 from his cousin to repair his car. He agrees to pay $15 per week until the loan is paid off. A. Function L represents the amount owed , w weeks after the student borrows money. Write an equation to represent this function. Use function notation. B. Write an equation to represent the inverse of function L. Explain what information it tells us about the situation. C. How many weeks will it take the student to pay off the loan
The inverse function is R(L) = (360 - L)/15. It will take 8 weeks to pay loan if student owes $240 and 24 weeks to pay off the whole loan.
A. Let's start by defining the function L(w) as the amount owed w weeks after the student borrows the money. The student borrowed $360 and agreed to pay $15 per week, so the amount owed after w weeks can be calculated as:
L(w) = $360 - $15w
B. To find the inverse of function L, we need to switch the roles of the input and output variables. Let's call the inverse function R, where R(L) is the number of weeks it takes to pay off the loan if the amount owed is L. We can solve the equation from part A for w:
L(w) = $360 - $15w
$15w = $360 - L
w = (360 - L)/15
Therefore, the inverse function R(L) is:
R(L) = (360 - L)/15
This function tells us how many weeks it will take to pay off the loan for a given amount owed. For example, if the student owes $240, we can plug that into the inverse function to find out how many weeks it will take to pay off the loan:
R($240) = (360 - 240)/15 = 8
So it will take 8 weeks to pay off the loan if the student owes $240.
C. To find out how many weeks it will take to pay off the loan, we need to find the value of w when L(w) = 0 (i.e., when the loan is fully paid off). We can set L(w) = 0 and solve for w:
L(w) = $360 - $15w = 0
$15w = $360
w = 24
So it will take 24 weeks to pay off the loan.
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You are the site engineer in charge of the operation of a set micro gas turbines in a factory. The correct operation of the turbines is an important factor in maintaining the energy supply for the machinery. Past experience indicates that there is a 98% chance that a turbine will operate normally in any particular day.
To ensure that a faulty turbine is identified and replaced, you order a test that measures the efficiency of each turbine and use that measure as an indication of possible problems in the turbine.
The test method is not perfect: the probability that a normally operating turbine will pass the test is 0.97 and the probability that a faulty turbine passes the test is 0.01.
The outcomes of the tests are statistically independent.
Suppose that one of the turbines fails the test, what is the probability of that turbine being faulty?
Answer:
about 0.40
Step-by-step explanation:
You have ...
probability of operating normally = 0.98probability a normally operating turbine passes the test = 0.97probability a faulty turbine passes the test = 0.01and you want to know the probability a turbine is faulty if it fails the test.
Test failureThe probability a turbine will fail the test is the sum of the probabilities a good turbine will fail, and that a bad turbine will fail.
p(good & fail) = p(good)×p(good fails) = 0.98×(1 -0.97) = 0.0294
p(bad & fail) = p(bad fails)×p(bad) = (1 -0.01)×(1 -0.98) = 0.0198
Then the probability a tested turbine will fail is ...
p(fail) = p(good & fail) +p(bad & fail) = 0.0294 +0.0198 = 0.0492
Conditional probabilityThe probability that a turbine is faulty given that it failed the test is ...
p(bad | failed) = p(bad & fail)/p(fail) = 0.0198/0.0492 ≈ 0.4024
The probability a turbine is faulty if it fails the test is about 0.40.
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Jose created a ball pit for his little sister to play in. He put 40 red balls, 55 purple balls, 45 yellow balls, and 60 green balls into the ball pit. While his sister is playing, one ball rolls out of the pit. What is the probability that the ball is red? Responses 0. 17 0. 17 0. 20 0. 20 0. 25 0. 25 0. 40
The probability that the ball that rolled out of the pit is red is 0.2 or 20%.
Now, let's apply this concept to Jose's ball pit problem. We know that Jose put 40 red balls, 55 purple balls, 45 yellow balls, and 60 green balls into the ball pit. The total number of balls in the pit is therefore:
Total number of balls = 40 + 55 + 45 + 60 = 200
Next, we know that one ball has rolled out of the pit. We want to find the probability that this ball is red. To do this, we need to calculate the probability of selecting a red ball from the total number of balls in the pit.
Probability of selecting a red ball = Number of red balls / Total number of balls
= 40 / 200
= 0.2 or 20%
This means that for every 10 balls that roll out of the pit, 2 of them are expected to be red.
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in the inspection of tin plate by continous electrolytic process, .15 imperfections are spotted on one minute average. find the probability that three imperfection plates are spottwd in three minutes
The probability of spotting 3 imperfections plates in 3 minutes is .3352.
The probability of spotting 3 imperfections plates in 3 minutes can be calculated using the binomial probability formula. This formula is used to calculate the probability of getting a certain number of successes in a certain number of trials (n), given a certain probability of success (p) for each trial.
In this case, the probability of success (p) is .15 and the number of trials (n) is 3. The formula for this is:
[tex]P(X = 3) = 3C3(.15)^3(1-.15)^(3-3)[/tex]
P(X = 3) = .3352
Therefore, the probability of spotting 3 imperfections plates in 3 minutes is .3352.
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The following statement should determine if x is not greater than 20. Explain what is wrong with it and write the correction. if (!x > 20)
The student's original statement has an issue in the way the "not" operator is used. The "not" operator (!) is negating the entire expression, including the variable 'x', rather than just the inequality. This leads to incorrect evaluation.
To correctly determine if x is not greater than 20, you should use the "less than or equal to" (<=) operator instead. Here is the corrected statement:
if (x <= 20)
This statement will be true if x is less than or equal to 20, which is the intended condition.
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Last month, Cinderella weighed 170 pounds. This morning, her weighing scale showed her weight changed by 10 percent as compared to last month. How much did she weigh this morning?
Cinderella would weigh either 187 or 153 pounds this morning.
What is unit cοnversiοn?Unit cοnversiοn is the prοcess οf cοnverting a quantity expressed in οne unit οf measurement tο anοther equivalent quantity expressed in a different unit οf measurement. It invοlves using cοnversiοn factοrs that relate the twο units οf measurement. This is dοne by multiplying οr dividing the οriginal quantity by a cοnversiοn factοr, which is a ratiο οf the twο units οf measurement that is equal tο οne.
Cinderella's weight increased or decreased by 10%, we can find her weight this morning by multiplying her previous weight by 1.10 (to find a 10% increase) or 0.90 (to find a 10% decrease).
For a 10% increase, Cinderella's weight this morning would be:
170 x 1.10 = 187 pounds
For a 10% decrease, Cinderella's weight this morning would be:
170 x 0.90 = 153 pounds
So depending on whether her weight increased or decreased by 10%, Cinderella would weigh either 187 or 153 pounds this morning.
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How can i simplify 4. 3,-1. 07 and -2. 971 into a positive number
By considering the absolute values of the integers, 4, 3,07, and 2.971 may be derived as a simpler set of positive numbers for the equations.
The distance a number is from zero on the number line is its absolute value. Taking a number's absolute value allows you to convert it into a positive number because it is by definition always positive. Just disregarding the sign and focusing on the size of a number allows us to determine its absolute value. This rule may be applied to each of the supplied integers in this situation, giving rise to their absolute values, which are all positive. The set of real numbers that are greater than zero in mathematics is known as the set of positive real numbers, or displaystyle'mathbb 'R' '>0'='left'x'in'mathbb 'R"mid x>0'right'.
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how would i find an equation algebraicaly when my points are (0,3) to (5,3) and would what would be my domain and range? 20 points!!
Answer:
Step-by-step explanation:
To find the equation of a line when you have two points, you can use the point-slope formula. Here's how to do it:
1. Find the slope of the line using the two points:
slope = (y2 - y1) / (x2 - x1)
where (x1, y1) = (0, 3) and (x2, y2) = (5, 3)
slope = (3 - 3) / (5 - 0) = 0/5 = 0
2. Use the point-slope formula to find the equation of the line:
y - y1 = m(x - x1)
where m is the slope, and (x1, y1) is one of the points on the line. Using (0, 3) as the point, we get:
y - 3 = 0(x - 0) or y = 3
So the equation of the line is y = 3, a horizontal line passing through y = 3.
The domain of this equation is all real numbers, since x can take on any value and y will always be 3.
The range of this equation is a single value, y = 3, since the line is horizontal and every point on the line has the same y value of 3.
HELP PLEASE NO ONE IS ANSWEING IT
What is the mean of this data set?
A table titled Length of Roses. The first column is labeled length in centimeters. The second column is labeled number of roses. The first row shows 2 roses measuring 22 centimeters in length. The second row shows 4 roses measuring 23 centimeters in length. The third row shows 5 roses measuring 24 centimeters in length. The fourth row shows 3 roses measuring 25 centimeters in length. The fifth row shows 1 rose measuring 26 centimeters in length.
24 cm
twenty-three and twelve-fifteenths
twenty-three and one-half
22 cm
Answer: To find the mean of the data set, you need to calculate the sum of the products of each length and its corresponding frequency, and then divide that sum by the total number of roses.
Using the data set given, the sum of the products is:
(2 * 22) + (4 * 23) + (5 * 24) + (3 * 25) + (1 * 26) = 221
The total number of roses is:
2 + 4 + 5 + 3 + 1 = 15
Therefore, the mean length of the roses is:
221 / 15 = 14.73 ≈ 24 cm
So, the answer is 24 cm.
Step-by-step explanation:
Answer:
24 but the test is wrong
Step-by-step explanation:
Soooo i dont know what the answer in the test is but the answer is 24. If you add them all up, 22 23 24 25 26, you get 120 which you then divide by 5. I dont know what the test wants u to answer tho.
Are these two triangles similar? If so, because of which postulate?
SSS, or Side-Side-Side Similarity, is what makes these two triangles alike.
What are a triangle's three sides?A right triangle's hypotenuse is its longest side, its "opposite" side was the one that faces a specific angle, and its "adjacent" side is the one that faces the angle in question. To define the edges of right triangles, we use specific terminology.
What are the kinds of triangles?A triangle represents a closed, three-sided object in two dimensions. The various kinds of circles go by various titles. Three different kinds of triangles—scalene, isosceles, and equilateral—are distinguished by the lengths of their sides.
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THIS TOO PLEASE MY TIME LIMIT IS ALMOST OIT
The answer on the number line is 1) √2,√3,√4,√5,√6,√7,√8,√9,√10 . 2). A. √62 (between 7 and 8 on the number line),B. √84 (between 9 and 10 on the number line),C.
What is Perfect square?In mathematics, perfect square is integer that is square of an integer. In other words, perfect square is non-negative integer that can be expressed as product of some integer multiplied by itself.
1). The first perfect square is 1, so it is already placed on the number line. The other perfect squares are:
4,9,16,25,36,49 64,81,100
You can place each of these numbers on the number line above the corresponding tick mark.
2). Place the following letters on their approximate place on the number line above.
To place each letter on the number line, you need to estimate its value based on its square root. For example, the square root of 62 is between the square roots of 49 and 64, so you can place letter A between those two numbers on the number line.
Here are the estimated values and approximate placements for each letter:
A. √62 (between 7 and 8 on the number line)
B. √84 (between 9 and 10 on the number line)
C. √23 (between 4 and 5 on the number line)
D.√34 (between 5 and 6 on the number line)
E. √54 (between 7 and 8 on the number line)
F. √12 (between 3 and 4 on the number line)
G. √77 (between 8 and 9 on the number line)
H. √45 (between 6 and 7 on the number line)
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vhat is the volume of the composite figures
104 ft³
120 ft³
150 ft³
160 ft³
Based on the attached figure, the volume of the composite figure is 408 cm³
Calculating the volume of the figureA composite figure is a three-dimensional shape that is made up of two or more simpler shapes.
To find the volume of a composite figure, you need to break it down into its simpler shapes and then use the appropriate formulas to calculate the volume of each individual shape
The volume of the composite figure is:
Volume = area of base * height
Substituting:
Base area = (14 * 3) + (1/2)(5 + (14-6))(7 - 3) = 68 cm²; height = 6 cm
So, we have
Volume = area of base * height = 68 cm² * 6 cm = 408 cm³
This means that
The volume is 408 cm³
Hence, the volume is 408 cm³
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Area of a rectangle prism 2.7 1.8 and 1.8
The total surface area of the rectangular prism is 25.92 square units.
How to get the area of the rectangular prism?Remember that the area of a rectangular prism whose dimensions are A, B, and C is equal to the sum of the areas of each of the faces, we can write this as:
total area = 2*[ A*B + B*C + C*A]
In this case we can write the dimensions as:
A = 2.7 units.
B = 1.8 units.
C = 1.8 units.
Then the total surface area of this prism is:
total area = 2*[ 2.7 units*1.8 units. + 2.7 units*1.8 units + 1.8 units*1.8 units]
total area = 2*[ 12.96 square units] = 25.92 square units.
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Complete question:
"Find the area of a prism whose dimensions are 2.7 by 1.8 by 1.8"
HURRY HELP
!!!!!!!!!
The altitude of drone is 8.4ft.
Definition of Angle of ElevationThe angle generates in between the horizontal line and the line of sight when an observer looks upward is referred to as the angle of elevation in mathematics. It is always greater than the observer and at a larger angle.
Angle of Depression: What is it?The term "angle of depression" defined as the angle created when an observer looks down at an item and the horizontal line intersects with the line of sight. It gauges how our area of vision shifts as we see down.
In the given figure,
∠DTL=35°
LT=12ft
tan35°=DL/LT
tan35°=DL/12
DL=8.4ft
Hence, The altitude of drone is 8.4ft.
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Use the Law of Cosines to solve the triangle. (Let a = 11.3 ft and c = 12.9 ft. Round your answer for b to two decimal places. Round your answers for A and C to the nearest minute.)
The triangle has sides; a = 11.3 ft, b = 9.03 ft, and c = 12.9 ft. 1
Angles of approximately A = 59°, B = 51°, and C = 70°
What is a triangle?Triangle is a shape of three line segments these segments have three points which crosses it.
The Law of Cosines states that;
c² = a² + b² - 2ab Cos(C)
put values;
12.9² = 11.3² + b² - 2(11.3)(b) Cos(C)
166.41 = 127.69 + b² - 22.6b Cos(C)
b² - 22.6b Cos(C) - 38.72 = 0
We know the quadratic formula, solve it for value of b:
b = [-22.6 Cos(C) ± [tex]\sqrt{(22.6Cos(C))^2 - 4*1*(-38.72)))[/tex]] / (2×1)
b = -11.3 Cos(C) ± [tex]\frac{\sqrt{510.76 Cos^2(C) + 154.88}}{2}[/tex]
To solve for the angles A and C, we can use the Law of Sines, which states that for any triangle with sides of lengths a, b, and c, and its opposite angles which are A, B, and C, So the equation is:
sin(A)/a = sin(B)/b = sin(C)/c
We know that c = 12.9 ft and a = 11.3 ft, and we have just found b, so we can use the Law of Sines to solve for the angles A and C.
sin(A)/11.3 = sin(C)/12.9
sin(A) = (11.3/12.9)sin(C)
sin(A) = 0.875969
A = [tex]Sin^{-1}(0.875969)[/tex]
A ≈ 59° (rounded to the nearest minute)
Now we can use the fact that the sum of the angles in a triangle is 180° to solve for C:
C = 180° - A - B
C = 180° - 59° - [tex]Sin^{-1}[/tex]([22.6cos(C) ± [tex]\sqrt{(511.56 - 154.88 Cos^2(C)) }[/tex]] / 2)
We can use a numerical solver to find the value of C that satisfies this equation. One possible value for C is:
C ≈ 70° (rounded to the nearest minute)
Finally, we can use the Law of Sines again to find the other angle B:
Sin(B)/b = sin(C)/c
Sin(B) = (b/12.9)sin(C)
Sin(B) = (b/12.9)sin(70°)
B = [tex]Sin^{-1}[/tex]((b/12.9)sin(70°))
By putting the value of b,
B ≈ 51° (rounded to the nearest minute)
Therefore, the triangle has sides of lengths 11.3 ft, approximately 9.03 ft, and 12.9 ft, and angles of approximately 59°, 51°, and 70°.
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gabriella went to the restaurant traveling 30 mph and returned home traveling 10 mph. if the total trip took 8 hours, how long did gabriella travel at each speed?
Let's assume that Gabriella traveled $x$ hours at 30 mph and $y$ hours at 10 mph. We know that the total trip took 8 hours, so we can write an equation based on the time:
$$x+y=8$$
We also know that the distance traveled going to the restaurant is the same as the distance traveled coming back home. Let's call this distance $d$. We can use the formula $d=rt$ to express this relationship:
$$30x=10y$$
Now we have two equations with two unknowns:
$$\begin{aligned} x+y&=8 \ 30x&=10y \end{aligned}$$
We can solve for $x$ and $y$ by using substitution. Solving the second equation for $y$, we get:
$$y=3x$$
Substituting this expression for $y$ in the first equation, we get:
$$\begin{aligned} x+3x&=8 \ 4x&=8 \ x&=2 \end{aligned}$$
Therefore, Gabriella traveled 2 hours at 30 mph and 6 hours at 10 mph.
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Popular chocolate bar Toblerone is packaged in a triangular prism. Its cross-section is an equilateral triangle of side 3.6 cm and a perpendicular height of 3.1 cm. The length of the bar is 21 cm.
a. State the number of faces, vertices, and edges for this triangular prism.
b. Find the volume of the packaging. Show all your workings and include units in your final answer.
Karen needed to put 5 gallons 3 quarts of gas into her boat on Monday and twice as much on Saturday. If she had an 18 gallon jug of gas available, did she have enough gas for both days?
Answer:
Karen needed to put 5 gallons 3 quarts of gas into her boat on Monday and twice as much on Saturday. To convert 5 gallons 3 quarts to gallons, we can add the number of quarts to the number of gallons and convert the total to gallons. Therefore, 5 gallons 3 quarts is equal to 5 + 3/4 = 5.75 gallons. Twice as much is 2 x 5.75 = 11.5 gallons. Therefore, Karen needed a total of 5.75 + 11.5 = 17.25 gallons of gas for both days. Since she had an 18-gallon jug of gas available, she had enough gas for both days.
out of a random sample of 1,000 dutch men, how many would we expect to be taller than 188 cm? (round your answer to the nearest integer.)
Out of a random sample of 1,000 Dutchmen, we would expect around 63 to be taller than 188 cm. This can be determined by using the standard normal distribution and probability, expecting the 159 Dutchmen to be taller than 188 cm
The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1. A normal distribution is a bell-shaped curve that is symmetrical around the mean. A normal distribution is used to model various natural phenomena.
Probability is the likelihood or chance of an event occurring. Probability is usually expressed as a fraction, decimal, or percentage. Probability is used in many fields such as mathematics, physics, statistics, and finance.
The given problem can be solved by converting 188 cm to a z-score and then finding the probability using a standard normal distribution table.
The z-score formula is given by:
z = (x - μ) / σwhere x = 188, μ = the mean height of Dutch men, and σ = the standard deviation of height for Dutchmen.
Let's assume that the mean height of Dutchmen is 180 cm and the standard deviation is 8 cm.
z = (188 - 180) / 8
z = 1
Therefore, the z-score for a height of 188 cm is 1.
Using a standard normal distribution table, we can find the probability of a man being taller than 188 cm as approximately 0.1587.
Therefore, in a random sample of 1,000 Dutchmen, we would expect approximately 0.1587 x 1,000 = 158.7 men to be taller than 188 cm. Rounded to the nearest integer, we would expect 159 Dutchmen to be taller than 188 cm.
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