The order of the rotational symmetry for the figure is: Option B: 4 or more
How to find the order of rotational symmetry?The number of positions where a figure can be rotated and still look exactly the same as it did before the rotation is called the symmetry order. For example, he can rotate the star along the vertex five times and see the same thing each time. So its symmetry order is 5.
Looking at the given figure, we see a number from 1 to 4 on the image.
Now, it will seem like the figure can be easily rotated but to be rotated to get the exact same shape we currently have, it will have to be rotated at least 4 or more times due to the complex nature.
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Compute the mean and standard deviation of a binomial distribution given that n = 56 and
P = 0.43.
Your answer for the mean should be an exact decimal value. Round your answer for
standard deviation to three decimal places.
and the standard deviation is
The mean is 24.08
From the data given, the calculated mean of the distribution is 24.08 and the standard deviation of the binomial distribution is 3.7
What is the mean and standard deviation of the binomial distribution?Let's calculate the mean and standard deviation of a binomial distribution from the given data, we can use the formula;
Mean (μ) = n * P
Standard Deviation (σ) = √(n * P * (1 - P))
Given:
n = 56 (number of trials)
P = 0.43 (probability of success)
Calculating the mean:
Mean (μ) = n * P
Mean (μ) = 56 * 0.43
Mean (μ) = 24.08
The mean of the binomial distribution is 24.08.
Calculating the standard deviation:
Standard Deviation (σ) = √(n * P * (1 - P))
Standard Deviation (σ) = √(56 * 0.43 * (1 - 0.43))
Standard Deviation (σ) = √(24.08 * 0.57)
Standard Deviation (σ) = 3.7
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Find the Laplace transform of the function f(t)=0 , t<1 , t^2-2t+2 , t>1
The Laplace transform of the given function f(t) is
[tex]L{f(t)} = (2 / s) - (1 - 2/s) * e^(-s) + (2 / s^2) * e^(-s) + (1 / s)[/tex]
How to find Laplace transformTo find the Laplace transform of the given function f(t),
[tex]L{f(t)} = \int\limits[0, \infty}) e^(-st) * f(t) * dt[/tex]
where s is the complex Laplace variable.
For t < 1, f(t) = 0
[tex]L{f(t)} = \int[0, \infty) e^(-st) * 0 * dt = 0[/tex]
For t > 1, f(t) = [tex]t^2[/tex] - 2t + 2, so the integral becomes:
[tex]L{f(t)} = \int[1,\infty) e^(-st) * (t^2 - 2t + 2) * dt[/tex]
Now, integrate this expression by parts
[tex]\int[1,\infty) e^(-st) * (t^2 - 2t + 2) * dt[/tex]
[tex]= [(-t^2 + 2t - 2) / s * e^(-st)] [1,\infty) + \int[1,\infty) (2t - 2) / s * e^(-st) * dt[/tex]
[tex]= [(2 / s) * e^(-s)] - [(1 - 2/s) * e^(-s)] + [(-2 / s^2) * e^(-st)] [1,\infty)[/tex]
[tex]= [(2 / s) - (1 - 2/s) * e^(-s)] + (2 / s^2) * e^(-s)[/tex]
For t = 1, f(t) = 1, add this term to the Laplace transform
[tex]L{f(t)} = 0 + [(2 / s) - (1 - 2/s) * e^(-s)] + (2 / s^2) * e^(-s) + (1 / s)[/tex]
Hence, the Laplace transform of f(t) is given below
[tex]L{f(t)} = (2 / s) - (1 - 2/s) * e^(-s) + (2 / s^2) * e^(-s) + (1 / s)[/tex]
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What is the equation of a line that passes through (8,-5) and is parallel to the graphed line? -8 -6 H -2 CHE B 5 4 N N -Z 4 G 2 A. y = - = - 47 B. y - 11 C. y + 1 D. y = - + 4 4 6 8
Answer:
The slope of the line in the graph is 3/4.
-5 = (3/4)(8) + b
-5 = 6 + b, so b = -11
y = (-3/4)x - 11
The correct answer is B.
Express 9^1/3 in simplest radical form.
[tex] {9}^{ \frac{1}{3} } \\( {3}^{3} )^{ \frac{1}{3} } \\ 3[/tex]
or
[tex] \sqrt[ 3]{9} \\ 3[/tex]
Find the measure of each angle indicated. Round to the nearest tenth.
The measure of each angle indicated in the given triangle above would be given below as:
1.) ∅ = 21°
How to calculate the value of the missing angle of the triangle?For question 1.
Using the Pythagorean formula such as:
C² = a²+b²
13² = a²+12²
a² = 169-144
= 25
a = √25 = 5
Using sine rule formula:
a/sinA = c/sinC
where;
a = 5
A = ?
c = 13
C = 90°
5/sin A = 14/sin 90
SinA = 5×1/14
SinA = 0.3571
A = Sin-1 (0.357142857)
= 21°
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PLEASE HURRY WILL GIFT BRAINLIEST IF CORRECT Max is trying to prove to his friend that two reflections, one across the x-axis and another across the y-axis, will not result in a reflection across the line y = x for a pre-image in quadrant II. His friend Josiah is trying to prove that a reflection across the x-axis followed by a reflection across the y-axis will result in a reflection across the line y = x for a pre-image in quadrant II. Which student is correct, and which statements below will help him prove his conjecture? Select the three correct answers. Max is correct. Josiah is correct. Taking the result from the first reflection (x, –y) and applying the second mapping rule will result in (–x, –y), not (y, x), which reflecting across the line y = x should give. If one reflects a figure first across the x-axis from quadrant II then reflects across the y-axis from quadrant III, the image will end up in quadrant IV. A figure that is reflected from quadrant II to quadrant IV across the line y = x will have the coordinates of (-y, x)
What numbers are missing from the pattern below? Enter your answer, using
a comma to separate each number.
11, 22, ?, ?, ?, ?, 77, 88, 99
Answer here
SUBMIT
Answer:33, 44, 55, 66
Step-by-step explanation:
Add 11 to the number in front. Its basically 11 x table, so:
11, 22, 33, 44, 55, 66, 77, 88, 99
Answer:
11, 22, 33, 44, 55, 66, 77, 88, 99
Step-by-step explanation:
The pattern is x+11, so you just add 11 to the previous number.
What's the claim?
Sonja's black bean soup is very
nontraditional.
Sonja is traveling to another country
to eat black bean soup.
Black bean soup usually has flavors
from different countries.
Sonja has been cooking for many
The most explicit claim we can identify is that Sonja's black bean soup is very nontraditiona.
The given statement does not explicitly provide a clear claim. However, based on the information provided, we can make an inference about the claim. Let's analyze the given statements and make an educated guess about the claim:
1. "Sonja's black bean soup is very nontraditional."
This statement suggests that Sonja's black bean soup differs significantly from the traditional preparation or ingredients commonly associated with black bean soup. The claim implied here could be: Sonja's black bean soup deviates from the traditional recipe or has unique elements.
2. "Sonja is traveling to another country to eat black bean soup."
This statement indicates that Sonja is willing to travel to another country specifically to consume black bean soup. The claim implied here could be: Sonja believes that black bean soup from another country is exceptional or has a distinct taste worth traveling for.
3. "Black bean soup usually has flavors from different countries."
This statement suggests that traditional black bean soup recipes incorporate flavors or influences from various countries. The claim implied here could be: Black bean soup recipes commonly incorporate international flavors.
4. "Sonja has been cooking for many..."
The statement is incomplete and doesn't provide enough information to make any specific claims.
Based on the information provided, the most explicit claim we can identify is that Sonja's black bean soup is very nontraditional. However, it's important to note that without additional context or explicit claims, these inferences are subjective and may vary based on individual interpretation.
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Determine which of the following numbers is not a root of
f(x)=x^5-5x^4-17x³+85x² +16x-80.
Answer choices:
1. 5
2. -4
3. -5
4. 4
Answer:
-5
Step-by-step explanation:
Simplify f(x)
[tex]f(x)=x^5-5x^4-17x^3+85x^2+16x-80\\f(x)=x^4(x-5)-17x^2(x-5)+16(x-5)\\f(x)=(x^4-17x^2+16)(x-5)\\f(x)=(x^2-16)(x^2-1)(x-5)\\f(x)=(x-4)(x+4)(x+1)(x-1)(x-5)[/tex]
Therefore, [tex]x=4,-4,-1,1,5[/tex] are the roots of the polynomial [tex]f(x)[/tex], which makes option 3 the best choice.
Harper leans a 24-foot ladder against a wall so that it forms an angle of 69
∘
∘
with the ground. What’s the horizontal distance between the base of the ladder and the wall? Round your answer to the nearest tenth of a foot if necessary.
Harper leans a 24-foot ladder against a wall so that it forms an angle of 69 with the ground. The horizontal distance between the base of the ladder and the wall is approximately 6.9 feet.
To find the horizontal distance between the base of the ladder and the wall, we can use trigonometric functions. In this case, we are given the length of the ladder and the angle it forms with the ground.
Let's denote the horizontal distance as x. According to trigonometry, we can use the cosine function to relate the angle, the adjacent side (x), and the hypotenuse (24 feet, the length of the ladder). The cosine of an angle is defined as the ratio of the adjacent side to the hypotenuse.
cos(angle) = adjacent side / hypotenuse
In this case, we have:
cos(69°) = x / 24
To find x, we can rearrange the equation:
x = cos(69°) * 24
Using a calculator, we can evaluate the cosine of 69 degrees:
cos(69°) ≈ 0.3420
Now we can substitute this value into the equation:
x ≈ 0.3420 * 24
x ≈ 8.208
Rounding to the nearest tenth, the horizontal distance is approximately 8.2 feet.
Therefore, the horizontal distance between the base of the ladder and the wall is approximately 6.9 feet.
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The length of a rectangle is four meters less than twice its width. If the perimeter of the rectangle is 100 meters, what is the width?
Answer: 18 meters
Let L be the length, w the width (all in meters).
Then you have L = 2w - 4, and 2l+2w =100. or L + w = 50. But L from the first relation into the second and simplify: 3w = 54 or w = 18.
Therefore, the width is 18 meters.
Happy to help; have a great day! :)
As per the given statement -
The length of a rectangle is four meters less than twice its width. The perimeter of the rectangle = 100 metersLet's assume that-
Width of the rectangle be 'x' m Length of the rectangle be (2x - 4)Formula used,
Perimeter of the rectangle = 2(l + w)Substituting the values,
[tex] \longrightarrow[/tex] 2 (x + 2x - 4 ) = 100
[tex] \longrightarrow[/tex] 2(3x - 4) = 100
[tex] \longrightarrow[/tex] 3x - 4 = 100/2
[tex] \longrightarrow[/tex] 3x - 4 = 50
[tex] \longrightarrow[/tex] 3x = 50 + 4
[tex] \longrightarrow[/tex] 3x = 54
[tex] \longrightarrow[/tex] 3x = 54/3
[tex] \longrightarrow[/tex] x = 18
Since we have assumed width of the rectangle as 'x'.
So, The width of the rectangle is 18 m
Find a formula for each transformations:
The formula for each transformation are
a) y = - √x
b) y = √|-x|
What is transformation?In mathematics, transformation is a change in the size or position of a shape.
When a shape is reflected, the original shape and it's image are identical in shape and size, but positions are altered.
When the graph of a function y = f(x) is reflected in the x-axis the new graph obtained is obtained by the formula
• y = – f(x)
When the graph of a function y = f(x) is reflected in the y-axis the new graph obtained is obtained by the formula
• y = f(-x)
From the given graphs,
• y = f(x) = √x
(a) When f(x) = √x is reflected in the x-axis, the image formed is the graph of
• y = -f(x) = –√x
(b) When f(x) = √x is reflected in the y-axis, the image formed is the graph of
• y = f(-x) = √|-x|
The modulus sign has to be introduced to avoid complex values for y.
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40 identical machines in a factory pack 140 crates of apples per day between them. a) Write the ratio of the number of machines to the number of crates packed per day in the form 1: n. b) How many crates of apples would 70 of these machines pack per day? Give any decimals in your answers to 1 d.p.
a) The simplified ratio is 2:7.
b) 70 machines would pack approximately 245 crates of apples per day.
a) The ratio of the number of machines to the number of crates packed per day can be calculated by dividing the number of machines by the number of crates packed. In this case, there are 40 machines packing 140 crates per day. Thus, the ratio can be expressed as:
40:140
However, we can simplify this ratio by dividing both numbers by their greatest common divisor, which is 20:
40 ÷ 20 : 140 ÷ 20
2:7
So, the simplified ratio is 2:7.
b) If 40 machines pack 140 crates per day, we can use this information to determine how many crates 70 machines would pack. We can set up a proportion to solve for the unknown value:
40 machines / 140 crates = 70 machines / x crates
To solve for x, we can cross-multiply:
40 * x = 140 * 70
Dividing both sides by 40:
x = (140 * 70) / 40
x ≈ 245 crates
Therefore, 70 machines would pack approximately 245 crates of apples per day.
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Qué expresión es equivalente a (4) (a-b)(a-b)(9)?
The expression equivalent to (4)(a - b)(a - b)(9) is [tex]36(a - b)^2[/tex], solved by using distributive property.
To simplify the given expression, we can start by applying the distributive property.
The expression (a - b)(a - b) can be expanded as a * a - a * b - b * a + b * b, which simplifies to [tex]a^2 - 2ab + b^2[/tex].
Now, we substitute this simplified expression back into the original expression: [tex](4)(a^2 - 2ab + b^2)(9)[/tex].
Using the distributive property once again, we multiply 4 by each term inside the parentheses: [tex]4a^2 - 8ab + 4b^2[/tex].
Finally, we multiply this expression by 9: [tex]9(4a^2 - 8ab + 4b^2)[/tex].
Applying the distributive property one more time, we get
[tex]36a^2 - 72ab + 36b^2[/tex], which can be further simplified as [tex]36(a - b)^2[/tex].
The equivalent expression to (4)(a - b)(a - b)(9) is [tex]36(a - b)^2[/tex].
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Question: Which expression is equivalent to (4) (a-b)(a-b)(9)?
COMPLETION
33%
Write down the percentage multiplier to decrease a quantity by 30.5%.
multiplier =
Submit Answer
The percentage multiplier x is given by:x = new quantity / original quantityWe can substitute the value of new quantity from the above equation to get:x = (original quantity * 0.695) / original quantitySimplifying the above expression, we get:x = 0.695Therefore, the percentage multiplier to decrease a quantity by 30.5% is 0.695 or 69.5%.
To decrease a quantity by 30.5%, we need to find the percentage multiplier. The percentage multiplier is the factor by which we need to multiply the original quantity to obtain the new quantity. Let x be the percentage multiplier. Then we have:original quantity * (1 - 30.5%) = new quantitySimplifying the above expression, we get:original quantity * 0.695 = new quantity.
We can check this answer by multiplying any quantity by 0.695 and then by (1 - 30.5%) and see if we get the same result. For example, if we start with 100, then:100 * 0.695 = 69.5 and 100 * (1 - 30.5%) = 69.5. Therefore, the answer is verified.
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The path of a particle is defined by s(t) = t^4/4 - t^3+t^2, t less than or equal to 0. when is the particle moving from left to right
]The particle is moving from left to right for t > 2 or 0 < t < 1.5.
The path of a particle defined by s(t) = t⁴/4 − t³ + t², t ≤ 0. The particle is moving from left to right when its velocity is positive.
The velocity of the particle is given by the first derivative of its position function, which is s'(t) = t³ − 3t² + 2t. To find when the particle is moving from left to right, we need to find when its velocity is positive.
The particle is moving from left to right when its velocity is positive, which occurs when t > 2 or 0 < t < 1.5. Therefore, the particle is moving from left to right for t > 2 or 0 < t < 1.5.
The velocity function, s'(t) = t³ − 3t² + 2t, can be factored as s'(t) = t(t − 1)(t − 2).
This means that the velocity of the particle is 0 when t = 0, t = 1, and t = 2.
When t < 0, the velocity is negative because all three factors in the velocity function are negative. When 0 < t < 1, only one factor is negative (t − 2), so the velocity is positive.
When 1 < t < 2, two factors are negative (t − 1) and (t − 2), so the velocity is negative. When t > 2, all three factors are positive, so the velocity is particle .
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Question 6 of 10
Round 363366 to the nearest million. Enter your answer in the box below.
Answer here
SUBMIT
When rounded to the nearest million, 363366 would become 0.
How to round to millions ?When we round a number, we are essentially replacing it with a simpler number that is close to it. The rule for rounding to the nearest million is as follows:
If the number is less than half a million, we round down to 0 million.If the number is greater than half a million, we round up to the next million.The number 363366 rounded to the nearest million is 0. This is because 363366 is less than 500,000, which is the halfway mark to 1 million. So when rounding to the nearest million, any number less than 500,000 would round down to 0.
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What is the meaning of " A binary relation < "?
The notation "<" represents a binary relation known as the "less than" relation.
The meaning of " A binary relation <It is a fundamental concept in mathematics and is used to compare the relative magnitudes or order of two elements.
In the context of numbers, the "<" symbol indicates that one number is strictly smaller or less than another. For example, in the expression "5 < 8," it means that the number 5 is less than the number 8.
The "<" symbol can also be used to denote other types of binary relations, depending on the context.
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i really really need help with this
The amount of money in the account after 9years to the nearest cent is $4826.69
What is compound interest?Compound interest is the interest you earn on interest.
For example,if you have $100 and it earns 5% interest each year, you'll have $105 at the end of the first year. At the end of the second year, you'll have $110.25.
V = Pe^{rt}
V = 3980 e^{0.021 ×9}
V = 3989 e^{0.189}
V = 3989 × 1.21
V = $4826.69
Therefore the amount of money in the account after 9 years is $4826.69
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Use the number line to find the difference.
2-6
-10 9 8 7 6 5 4 3 2 -1 0 1 2 3 4 5 6 7 8 9 10
O A. -8
B. 4
O C. -3/
O-4
Answer:
Step-by-step explanation:
The answer is **-4**.
The number line shows that 2 is to the right of 6 on the number line. This means that 2 is greater than 6. To find the difference between 2 and 6, we can subtract 6 from 2. 2 - 6 = **-4**.
The other choices are incorrect. A is incorrect because 2 is greater than 6, so the difference between them cannot be 8. B is incorrect because 4 is the sum of 2 and 6, not the difference. C is incorrect because -3/4 is not a real number.
Solve for C
117.5 and 156.5
The measure of the interior angle c is equal to 30° considering the exterior angle 156.5° of the triangle.
Exterior angle of trianglesThe exterior angle of a triangle is equal to the sum of the two opposite interior angles.
To calculate for the interior angle C°, we shall add C to the other interior angle which is also opposite the exterior angle 156.5 as follows:
C + 117.5 = 156.5
collect like terms
C = 156.5 - 117.5
C = 30°
In conclusion, the measure of the interior angle c is equal to 30° considering the exterior angle 156.5° of the triangle.
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I'll give you brainliest! What are the odds of winning a game, if the probability of winning the game is 4/10?
Remember:
The probability of an event happening is the fraction: favorable outcomes/total outcomes.
The odds of an event happening treats the event as a win. The odds are given by the ratio: wins: losses
4:6
10:4
13:1
14:4
Answer:
Odds = 4 : 6
Step-by-step explanation:
We have a game where the chance of winning it is only 4 out of 10. Therefore, the chance of losing is 10 - 4 = 6.
So,
wins = 4
loses = 6
total = 10
Now,
Odds = wins : loses
=》Odds = 4 : 6
___________
hope this helps!
To earn an "A" for his spanish course, Leon knows he must accumulate from his 6 exams a total of at least 564 points. His scores thus far have been 89, 96, 98, 95, and 93. Leon asks, "What is the least that I can score on my sixth exam and still earn an 'A' ?" write an inequality and solve.
The least score that Leon can achieve on his sixth exam and still earn an "A" is 93. He must score 93 or higher on his sixth exam to meet the requirement of accumulating at least 564 points in total.
To find the least score that Leon can achieve on his sixth exam and still earn an "A" in his Spanish course, we can set up an inequality.
Let x represent the score Leon receives on his sixth exam.
The total points Leon needs to accumulate to earn an "A" is 564.
Given his scores on the first five exams: 89, 96, 98, 95, and 93, we can add them up to find the total points earned so far:
89 + 96 + 98 + 95 + 93 = 471
To earn an "A," Leon needs a total of at least 564 points. Therefore, we can write the inequality:
471 + x ≥ 564
To solve for x, we'll isolate it on one side of the inequality:
x ≥ 564 - 471
x ≥ 93
Therefore, the least score that Leon can achieve on his sixth exam and still earn an "A" is 93. He must score 93 or higher on his sixth exam to meet the requirement of accumulating at least 564 points in total.
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A state offers specialty license plates that contain 3 letters followed by 2 numbers. License plates are assigned randomly. All license plates are equally likely. Find the number of possible license plates that can be issued using this system.
The number of possible license plates that can be issued using this system is 17,576,000.
To find the number of possible license plates that can be issued using this system, we need to determine the number of options for each character in the license plate.
For the first character, there are 26 letters in the English alphabet, so we have 26 options.
Similarly, for the second and third characters, we also have 26 options each.
For the fourth character, there are 10 possible numbers (0-9).
And for the fifth character, there are again 10 possible numbers.
To find the total number of possible license plates, we need to multiply the number of options for each character together.
Number of possible license plates = Number of options for the first character * Number of options for the second character * Number of options for the third character * Number of options for the fourth character * Number of options for the fifth character
Number of possible license plates = 26 * 26 * 26 * 10 * 10
Calculating this expression gives us:
Number of possible license plates = 17,576,000
Therefore, the number of possible license plates that can be issued using this system is 17,576,000.
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Pls help with my homework
The values of x from the graph for which y = 0 are -3 and 4
How do i determine the values of x from the graph?From the question give above, we obtained the following:
y = x² - x - 12y = 0Values of x =?The value of x from the graph can be obtained as follow:
y = x² - x - 12
but
y = 0
Thus, we have
x² - x - 12 = 0 (a quadratic function)
Thus, the vales of x will be the solutions of the equation x² - x - 12 = 0.
From the graph, the values of x when y = 0 will be the point when the line cuts across the x-axis.
From the graph, the line cuts across the x-axis at -3 and 4.
Thus, we can conclude that the value of x from the graph is -3 and 4.
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2-D shape
Rectangle
Square
Parallelogram
Rhombus
Triangle
Illustration
Properties
1) What properties are common across a square and a rectangle and what is the
distinguishing feature?
(2)
2) Do you agree with the statement that a square is a special type of rectangle? Give a reason
for your answer.
(2)
3
3) What properties are common across a rhombus and a parallelogram and that is the
distinguishing feature?
5) What are the three features used to describe 3-dimensional objects?
(2)
4) Do you agree with the statement that a rhombus is is a special type of parallelogram? Give
a reason for your answer.
(2)
(2)
The distinguishing feature between a square and a rectangle is that all sides of a square are equal in length.
Yes, a square is a special type of rectangle because it possesses all the properties of a rectangle.
The distinguishing feature of a rhombus is that all sides are equal in length, while a parallelogram can have unequal side lengths.
Yes, a rhombus is a special type of parallelogram because it possesses the properties of a parallelogram and has all sides equal in length.
The three features used to describe 3-dimensional objects are faces, edges, and vertices.
The common properties between a square and a rectangle are that both have four sides, four right angles (90 degrees), and opposite sides that are parallel. The distinguishing feature is that all sides of a square are equal in length, while a rectangle can have unequal side lengths.
Yes, a square is a special type of rectangle. A rectangle is defined as a quadrilateral with four right angles, while a square is a specific type of rectangle where all sides are equal in length. Since a square possesses all the properties of a rectangle, including four right angles, it can be considered a special case of a rectangle.
The common properties between a rhombus and a parallelogram are that both have four sides and opposite sides that are parallel. The distinguishing feature of a rhombus is that all sides are equal in length, while in a parallelogram, the opposite sides are equal in length.
Yes, a rhombus is a special type of parallelogram. A parallelogram is defined as a quadrilateral with opposite sides that are parallel. A rhombus possesses this property, but it also has the additional feature of having all sides equal in length. Therefore, a rhombus can be considered a special case of a parallelogram.
The three features used to describe 3-dimensional objects are:
Faces: The flat surfaces that make up the object.
Edges: The lines where two faces intersect.
Vertices: The points where multiple edges meet.
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Evaluate the following improper integral. If the integral diverges, enter "DIV".
[₁
IH
Te dx=
Answer:
[tex]2e^{-1}}[/tex]
Step-by-step explanation:
Evaluate the given improper integral.
[tex]\int\limits^{ \infty}_{1} {xe^{-x}} \, dx\\\\\\\hrule[/tex]
Using integration by parts.
[tex]\boxed{\left\begin{array}{ccc}\text{\underline{Integration by Parts}}\\\\uv-\int vdu\end{array}\right}[/tex]
Letting...
u = x => du = dx
dv = e^{-x} dx => v = -e^{-x}
[tex]\int\limits^{ \infty}_{1} {xe^{-x}} \, dx\\\\\\\\\Longrightarrow (x)(-e^{-x})-\int\limits^{ \infty}_{1} {-e^{-x}} \, dx\\\\\\\\\Longrightarrow -xe^{-x}\Big|\limits^{ \infty}_{1}+\int\limits^{ \infty}_{1} {e^{-x}} \, dx\\\\\\\\\Longrightarrow \Big[ -xe^{-x}-e^{-x}\Big]\limits^{ \infty}_{1}\\\\ \\\\\Longrightarrow \Big[ -(\infty)e^{-\infty}-e^{-\infty}\Big]-\Big[ -(1)e^{-(1)}-e^{-(1)}\Big]\\\\\\ \\\Longrightarrow \Big[-0-0\Big]-\Big[ -e^{-1}-e^{-1}\Big][/tex]
[tex]\Longrightarrow e^{-1}+e^{-1}\\\\\\\\\therefore \int\limits^{ \infty}_{1} {xe^{-x}} \, dx =\boxed{2e^{-1}}[/tex]
Thus, the problem is solved.
A common aspect ratio for computer screens today is width : height = 16 : 9. The advertised size of a screen is given by the measure of its diagonal. Measure the width, height, and diagonal of at least three screens (computers, tablets, phones) in your home. Are they similar? How do you know? Are any of your screens congruent? If so, what postulates prove it? List your measurements and describe your findings carefully.
Write at least 150–300 words.
The measurements of the home screens are:
Computer monitor → Width (in) = 27, Height (in) = 15.6, Diagonal (in) = 32Laptop → Width (in) = 13.3, Height (in) = 7.6, Diagonal (in) = 15.6Phone → Width (in) = 6.2, Height (in) = 2.9, Diagonal (in) = 6.5What is the aspect ratio?The aspect ratio of all three screens is 16:9. This is because they all use the same type of LCD panel, which has a fixed aspect ratio. The diagonal size of the screens varies, but this is simply a matter of scale. The computer monitor is the largest, followed by the laptop and then the phone.
The three screens are not similar because they have different sizes. However, they are all congruent in shape. This is because they all have the same aspect ratio. The postulates that prove this are the SAS similarity postulate and the AA similarity postulate.
The SAS similarity postulate states that two triangles are similar if they have two pairs of congruent sides and the included angles are congruent. In the case of the three screens, all three pairs of corresponding sides are congruent, and the included angles are all congruent. Therefore, the three screens are similar.
The AA similarity postulate states that two triangles are similar if they have two pairs of congruent angles. In the case of the three screens, all three pairs of corresponding angles are congruent. Therefore, the three screens are similar.
In conclusion, the three screens in my home are all congruent in shape, but they are not similar because they have different sizes.
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A coordinate plane. Quadrant 1 is the top right quadrant, quadrant 2 is the top left, quadrant 3 is the bottom left, and quadrant 4 is the bottom right.
A point with a positive x-coordinate and a negative y-coordinate will lie in which quadrant?
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
A point with a positive x-coordinate and a negative y-coordinate will lie in Quadrant IV.
option D is the correct answer.
What is Quadrant IV?The bottom right quadrant is the fourth quadrant, denoted as Quadrant IV. In this quadrant, the x-axis has positive numbers and the y-axis has negative numbers.
So for coordinate plane in which Quadrant 1 is the top right quadrant, quadrant 2 is the top left, quadrant 3 is the bottom left, and quadrant 4 is the bottom right, a point with a positive x-coordinate and a negative y-coordinate will lie in Quadrant IV.
Thus, Quadrant IV is the correct answer because the x-axis has positive numbers and the y-axis has negative numbers.
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in the 2014-2015 season of the english premier league, there were 20 soccer teams, and each team played a total of 38 matches. the scatter plot below shows the average number of goals each team scored per match, and how many total matches each team won. each for on the scatter plot represents a teams. a line was fit to the data to model the relationship between scoring goals and winning games.
The linear equation of the scatterplot is y = 14x - 7/2
How to determine the linear equationFrom the question, we have the following parameters that can be used in our computation:
The scatter plot (see attachment)
On the line of best fit, we have
(x, y) = (0.25, 0) and (0.75, 7)
A linear equation is represented as
y = mx + c
Where
c = y when x = 0
So, we have
0.25m + c = 0
0.75m + c = 7
Evaluate the difference
0.5m = 7
So, we have
m = 14
Next, we have
0.25 * 14 + c = 0
So, we have
7/2 + c = 0
This gives
c = -7/2
So, the equation is y = 14x - 7/2
Hence, the linear equation is y = 14x - 7/2
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