Answer:
I may be wrong but I believe it could be (−∞, ∞).
Step-by-step explanation:
Depending on the polynomial is what the rage would be. I'm beyond sorry if it is wrong.
click and drag the steps in the correct order to show that ¬p → (q → r) and q → (p ∨ r) are logically equivalent. (note: while proving, prove the equivalence from ¬p → (q → r) to q → (p ∨ r).)
The order of steps will be :
Step 1 : p V (q ⇒ r)
Step 2 : p V ¬ q V r
Step 3 : ¬ q V p V r
Step 4 : q ⇒ (p V r)
Given,
¬p → (q → r) and q → (p ∨ r) are logically equivalent.
Now to prove the equivalence,
¬p → (q → r) to q → (p ∨ r)
The order of steps is given below:
Step 1 : p V (q ⇒ r)
Step 2 : p V ¬ q V r
Step 3 : ¬ q V p V r
Step 4 : q ⇒ (p V r)
Hence the equivalence can be shown.
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A gardener is planting flowers and would like for them to be in even rows. He has 18 rose bushes and 24 tulips. What is the greatest number of plants he can have in each row to keep the rose bushes and tulips in their own rows?
3
4
6
12
Answer:
6
Step-by-step explanation:
cause 18 is a multiple of 6 and 24
What’s the function of this?
The hint about this being a linear function is a critical piece of information.
A linear function has a fixed slope, so you can use the slope formula to find that slope using the two given points, (-3,-5) and (-1,-1).
[tex]m=\dfrac{y_2-y_1}{x_2-x_1} = \dfrac{-1-(-5)}{-1-(-3)} = \dfrac{4}{2}=2[/tex]
Now you can use that slope and a point to find the equation of the function.
g(x) = mx + b, but m=2, so g(x) = 2x + b
If we plug in one of the points, we can calculate b:
-5 = 2(-3) + b
-5 = -6 + b
1 = b
Now you have your function: g(x) = 2x + 1
You can use it to calculate the missing values in the table.
11. To convert between radians and degrees, you use a conversion factor, either xrad/180or180/x rad How do you know which conversion factor to use?
The conversion factor to use depends on the type of angle tat is to be converted
How do you know which conversion factor to use?From the question, we have the following parameters that can be used in our computation:
Conversion factors = xrad/180 or 180/x rad
The conversion factor to use depends on the type of angle tat is to be converted
Take for instance, we use 180/x rad from radians to degree and the other from degree to radians
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Verify that phi(x) = 2/1-ce^3x, where c is an arbitrary constant a one-parameter family of solutions to the de dy/dx=3y^2-6y/2?
The function phi(x) = 2/1-ce³ˣ is a one-parameter family of solutions to the differential equation dy/dx = 3y² - 6y/2.
A function is a one-parameter family of solutions to a differential equation if it satisfies the equation for all values of the arbitrary constant "c".
In this case, the function phi(x) = 2/1-ce³ˣ is a one-parameter family of solutions to the differential equation because, no matter what the value of "c" is, the function will always satisfy the equation.
So, when we say that
=> phi(x) = 2/1-ce³ˣ
is a one-parameter family of solutions to the differential equation
=> dy/dx = 3y² - 6y/2,
we mean that the function can be used to describe the rate of change of y with respect to x for a range of values of y.
By changing the value of the constant "c", we can get different specific solutions to the differential equation, each corresponding to a different curve in the x-y plane.
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x^2+6x complete the square then factor the trinomial
By adding and subtracting 9, we will be able to complete squares and rewrite the expression as:
x^2 + 6x = (x + 3)^2 - 9
How to complete the square?Remembert that the perfect square trinomial is:
(a + b)^2 = a^2 + 2ab + b^2
Here we have the quadratic expression:
x^2 + 6x
We can rewrite the second term as:
x^2 + 2*3*x
Then, comparing with the variables on the first equation, we can use:
x = a
3 = b
Then what we need to add to complete squares is 3^2 = 9
To not change the expression, we will add and subtract that number (which is equivalent to adding 0).
x^2 + 2*3*x + 9 - 9
(x^2 + 3*3x + 9) - 9
(x + 3)^2 - 9
That is the expression after we complete squares.
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Valentina is baking jumbo cinnamon rolls for a family breakfast. She uses all the dough she made to form 12 cinnamon rolls of equal weight. The recipe usually makes 36 ounces of dough, but Valentina made more dough than that so she can have larger cinnamon rolls.
Let x represent how many ounces of dough Valentina uses for each cinnamon roll. Which inequality describes the problem?
- 12x ≥ 36
- 12x > 36
The inequality 12x > 36 is used to describe the problem of how much dough Valentina used to make 12 cinnamon rolls of equal weight.
Which inequality describes the problem?The algebraic idea of inequality is used in this query. A mathematical declaration that two expressions are not equal is known as an inequality.
In this question, the inequality 12x > 36 is used to describe the problem of how much dough Valentina used to make 12 cinnamon rolls of equal weight.
The steps for this process are as follows
The problem is asking how much dough Valentina used to make 12 cinnamon rolls of equal weight. We can set up an equation to solve this problem using the information we are given.
Let x represent the number of ounces of dough used for each cinnamon roll.
We are aware that the recipe typically yields 36 ounces of dough; therefore, 12x must be more than 36 as Valentina produced more dough.
Therefore, the inequality that describes the problem is 12x > 36.
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Jenny has a bag with seven blue sweets and 3 red sweets in it. She picks up a sweet at random from the bag ,replaces it and then picks again at random. Draw a tree diagram to represent this situation and use it to calculate the probabilities that she picks
A tree diagram for the scenario is:
Start
/ \
Blue Red
/ \
Blue Red
/ \
Blue Red
What is a Tree Diagram?A probability space can be represented by a tree diagram in probability theory. A series of independent events or conditional probabilities may be represented using a tree diagram. The diagram's nodes each represent an occurrence and their respective probabilities.
To calculate the probability of picking a blue sweet twice in a row, we need to multiply the probability of picking a blue sweet on the first try (7/10) by the probability of picking a blue sweet on the second try (7/10), resulting in (7/10) * (7/10) = 49/100.
Similarly, to calculate the probability of picking a red sweet on the first try and a blue sweet on the second try, we need to multiply the probability of picking a red sweet on the first try (3/10) by the probability of picking a blue sweet on the second try (7/10), resulting in (3/10) * (7/10) = 21/100.
So the probability of picking a red sweet twice in a row is (3/10) * (3/10) = 9/100.
Thus, the probability of picking blue twice in a row is 49/100, and the probability of picking red-blue or blue-red is 21/100.
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Cut 5 pieces of string having the following lengths in inches. 2. 99. 55. 74. 27. 6 A subject measures the first length four times by eye. His measurements are 3. 2. 93. 13. 0 Suppose his measurements have a bias of 0. 1 inches. What are the four random errors for his measurements
The four random errors of his measurement are 0.0, 0.1, 0.1, and 0.0.
Random errors are errors in experimental measurements that are caused by unpredictable and unknown changes in the experiment and do not occur in any describable pattern. One example of random errors is Measuring blood pressure.
Bias or systematic errors are due to chance and their source of error is detectable. This type of error can be calculated for an experiment and then it can be added to the measurements that we take.
We know that the Measured value = the Real value of the experiment + Random errors + Systematic errors (Bias). So, to calculate the random error we have to deduct the real value and the systematic error or bias from the measured value of the experiment.
That is,
Random error in 1st observation = 3.0 - 2.9 - 0.1 = 0.0
Random error in 2nd observation = 2.9 - 2.9 - 0.1 = - 0.1
Random error in 3rd observation = 3.1 - 2.9 - 0.1 = 0.1
Random error in 4th observation = 3.0 - 2.9 - 0.1 = 0.0
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Analia thought of two different ways to define this quantity. Identify these two definitions among the following options.
Analia can define the quantity by either the % of students in sports clubs divided by SAT average or the Number of sports medals won. Hence, options A and C are the correct options.
Analia wants to know which school has the higher SAT average relative to the resources invested per student. In order to do so, she has to think of ways using which she would easily be able to do so.
From the given options we can deduce that she can either use the % of students in sports clubs divided by SAT average or the Number of sports medals won. Since Percentage of students in sports clubs divided by SAT average and the Number of sports medals won defines the quantitative characteristic of SAT. These are the two ways in which Analia defined the given quantity
The complete question that you might be looking for is given below.
Analia thought of two different ways to define this quantity. Identify these two definitions among the following options.
A) % of students in sports clubs divided by SAT average
B) Graduation rate divided by SAT average
C) Number of sports medals won
D) Number of sports medals divided by SAT average
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abby has 39 coins, consisting only of dimes and quarters, worth $7.35. how many dimes and how many quarters does she have?
Answer:
see below
Step-by-step explanation:
dimes = 0.1 x dimes
quarters =0.25 y quarters
x*0.1 + y*0.25 =7.35
x+y =39 so x = 39-y
(39-y)*0.1 +0.25y =7.35
3.9-0.1y+0.25y=7.35
0.15y = 3.45
y=23
x=16
Cycle carbon out of the atmosphere V.s Cycle carbon into the atmosphere
Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.
About the AtmosphereThe atmosphere is the layer of gas that surrounds a planet, including Earth. Atmosphere is taken from the Greek words "atmos" and "sphaira". Atmos means water vapor or gas and sphaira means blanket.
As mentioned above, the atmosphere also surrounds the planets other than Earth. Generally the thickness of the atmosphere is approximately 1,000 kilometers. On Earth alone, the atmosphere is 560 kilometers thick from the ground to space.
The mass of Earth's atmosphere is known to be 59 x 1014 tonnes. The gas content of each planet's atmosphere is usually different, depending on the most abundant gas elements or compounds on that planet.
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suppose x is a random variable that takes values on all positive integers. let a = {2 ≤ x ≤ 4} and b = {x ≥ 4}. describe the events (i) ac; (ii) bc; (iii) ab; and (iv) a ∪ b
x is a random variable that takes values on all positive integers. Then the events are:
(i) a^c = {0, 1, 5, 6, 7...........}
(ii) b^c = {0, 1, 2, 3}
(iii) ab = {4}
(iv) a ∪ b = {2, 3, 4, 5, 6, 7, 8,..........}
a = {2 ≤ x ≤ 4} and b = {x ≥ 4}.
(i) We have to describe the events a^c
a = {2 ≤ x ≤ 4}
Then a^c = {x : x < 2 or x > 4}
So the elements are
a^c = {0, 1, 5, 6, 7...........}
(ii) We have to describe the events b^c
b = {x ≥ 4}.
Then b^c = {x : x < 4}
Then the elements are
b^c = {0, 1, 2, 3}
(iii) We have to describe the events ab.
The ab = a ∩ b
As we know that a = {2 ≤ x ≤ 4} and b = {x ≥ 4}. So
ab = {x : 2 ≤ x ≤ 4 ∩ x ≥ 4}
ab = {x : x = 4}
So, ab = {4}
(iv) We have to describe the events a ∪ b
As we know that a = {2 ≤ x ≤ 4} and b = {x ≥ 4}. So
a ∪ b = {x : 2 ≤ x ≤ 4 ∪ x ≥ 4}
a ∪ b = {2, 3, 4, 5, 6, 7, 8,..........}
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A chool i arranging a field trip to the zoo. The chool pend 664. 58 dollar on pae for 44 tudent and 3 teacher. The chool alo pend 379. 72 dollar on lunch for jut the tudent. How much money wa pent on a pa and lunch for each tudent?
There was spent 22.77 dollars on a pass and lunch for each student
What are algebraic operations?They are the set of numbers and symbols that are related by the different mathematical operation signs such as addition, subtraction, multiplication, division among others.
According to the data problem,
Total money spend on passes = 664. 58 dollars
Total number of people = 44 + 3 = 47
Money spend on pass for each person = 664.58/47 = 14.14 dollars
Total money spend on lunch = 379.72 dollar
Total number of students = 44
Money spend on lunch for each student = 379.72/44 = 8.63 dollars
Total money spend= 14.14 + 8.63 = 22.77dollars
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Correctly written question:
A school is arranging a field trip to the zoo. The school spend 664. 58 dollar on passes for 44 student and 3 teacher. The school also spend 379. 72 dollar on lunch for jut the student. How much money was spent on a pass and lunch for each student?
Given the diagram below, solve for x.
Based on the given diagram which represents angle at a point, the measure of angle x is 33°.
What is the measure of angle x?The total angle at a point is 360°
So,
87° + x° + 87° + x °+ 87° + x° = 360°
261° + 3x° = 360°
3x° = 360° - 261°
3x° = 99°
divide both sides by 3
x = 99/3
x = 33°
Therefore, the measure to angle x is 33° respectively.
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let x and y be finite non-empty sets, with m and n elements, respectively. how many functions are there from x to y ? how many injections?
The number of functions from a set X with m elements to a set Y with n elements is given by [tex]n^{m}[/tex]
This is because for each element in X, there are n possible elements in Y to which it can be mapped. So, for each of the m elements in X, there are n choices, giving a total of n * n * ... * n (m times) possible functions.
The number of injections (or one-to-one functions) from a set X with m elements to a set Y with n elements is given by the number of ways to choose m elements from a set of n elements, which is given by the binomial coefficient C(n, m).
This is because an injection must map each element in X to a distinct element in Y, so the number of injections is equal to the number of ways to choose m elements from n elements without repetition.
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you roll a fair six sided die the die shows an odd number or number less than three
The probability of getting an odd number or number less than three is 5 / 6.
What is probability?Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Probability = Number of favourable outcomes / Number of samples
The samples are given below:-
S = { 1, 2 , 3 , 4 , 5 , 6 }
Favourable outcome = Odd numbers = { 1 , 3 , 5 } = 3
Less than three = { 1 , 2 } = 2
The probability will be calculated as:-
Probability = ( 3 / 6 ) + ( 2 / 6 )
Probability = ( 1 / 2 ) + ( 1 / 3 )
Probability = ( 3 + 2 ) / 6
Probability = 5 / 6
Therefore, the probability will be 5 / 6.
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Help with the question below
The area of the composite figure is equal to 58 square inches. (Correct choice: C)
How to determine the area of the composite figure
In this problem we find the case of composite figure formed by an irregular pentagon and an triangle, the resulting can be found as a combination of triangles and rectangles, whose area formulas are:
Triangle
A = 0.5 · w · l
Rectangle
A = w · l
Where:
w - Width, in inches.l - Length, in inches.A - Area, in square inches.Now we proceed to determine the area of the composite figure:
A = 0.5 · (8 in) · (6 in) + (8 in) · (6 in) - 2 · 0.5 · (1 in) · (5 in) - 2 · 0.5 · (3 in) · (3 in)
A = 24 in² + 48 in² - 5 in² - 9 in²
A = 72 in² - 14 in²
A = 58 in²
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What is the Diagonal of Rectangle Formula?
Answer:
square root of (l^2 + b^2)
The formula for the diagonal of a rectangle is given by the d = √(l² + w²).
What is the length of the diagonal of the rectangle?
We can find the diagonal of a rectangle if you have the width and the height. The diagonal equals the square root of the width squared plus the height squared.
The diagonal of a rectangle is a line segment connecting two opposite corners of the rectangle and passes through the interior of the rectangle.
The formula for the diagonal of a rectangle is given by the Pythagorean theorem:
d = √(l^2 + w^2)
Where,
d is the length of the diagonal,
l is the length of the rectangle,
and w is the width of the rectangle.
The Pythagorean theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the longest side (the hypotenuse).
In the case of a rectangle, the two shorter sides are the length and the width of the rectangle, and the longest side is the diagonal.
Therefore, the diagonal of a rectangle can be considered as the hypotenuse of a right triangle with sides equal to the length and width of the rectangle.
Hence, The formula for the diagonal of a rectangle is given by the d = √(l² + w²).
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A pilot was asked to drop food packets in a terrain. He must fly over the entire terrain only once but cover a maximum number of drop points. The points are given as inputs in the form of integer co-ordinates in a twodimensional field. The flight path can be horizontal or vertical, but not a mix of the two or diagonal. Write an algorithm to find the maximum number of drop points that can be covered by flying over the terrain once.
The algorithm to find the maximum number of drop points that can be covered by flying over the terrain once is coded below.
To find the maximum number of drop points that can be covered by flying over the terrain once, use the following algorithm:
1. Read the input values:
Read the integer xCoordinate_size, representing the number of x coordinates (N).
Read the N space-separated integers representing the x coordinates.
Read the integer yCoordinate_size, representing the number of y coordinates (M).
Read the M space-separated integers representing the y coordinates.
2. Create two sets to store the unique x and y coordinates.
Let's call them xCoordinatesSet and yCoordinatesSet.
3. Traverse the input x coordinates:
- For each x coordinate, add it to the xCoordinatesSet.
4. Traverse the input y coordinates:
For each y coordinate, add it to the yCoordinatesSet.
5. Calculate the number of drop points that can be covered:
The maximum number of drop points that can be covered is the minimum between the size of xCoordinatesSet and yCoordinatesSet.
6. Output the result:
Print the calculated maximum number of drop points.
The algorithm in pseudocode:
function findMaxDropPoints():
Read xCoordinate_size
Read xCoordinates (N space-separated integers)
Read yCoordinate_size
Read yCoordinates (M space-separated integers)
xCoordinatesSet = new Set()
yCoordinatesSet = new Set()
for each x in xCoordinates:
xCoordinatesSet.add(x)
for each y in yCoordinates:
yCoordinatesSet.add(y)
maxDropPoints = min(xCoordinatesSet.size, yCoordinatesSet.size)
Print maxDropPoints
By following this algorithm, efficiently find the maximum number of drop points that can be covered by the pilot while flying over the terrain only once.
The solution has a time complexity of O(n), where n is the number of drop points, which is optimal.
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The question attached here seems to be incomplete, the complete question is:
A pilot was asked to drop food packets in a terrain. He must fly over the entire terrain only once but cover a maximum number of drop points. The points are given as inputs in the form of integer co-ordinates in a two- dimensional field. The flight path can be horizontal or vertical, but not a mix of the two or diagonal.
Write an algorithm to find the maximum number of drop points that can be covered by flying over the terrain once.
Input
The first line of input consists of an integer-xCoordinate_size, representing the number of x coordinates (N).
The next line consists of N space- separated integers representing the x coordinates.
The third line consists of an integer- yCoordinate_size, representing the number of y coordinates (M).
The next line consists of M space- separated integers representing the
Coordinator
Helpppppp! and please show work but make it short.
Which of these is another way to write the function g(x)=3x?
g(x)=3(9x−2)g of x is equal to 3 times open paren 9 raised to the x minus 2 power close paren, , ,
g(x)=9(3x−2)g of x is equal to 9 times open paren 3 raised to the x minus 2 power close paren, , ,
g(x)=9(3x+2)g of x is equal to 9 times open paren 3 raised to the x plus 2 power close paren, , ,
g(x)=3(9x+2)
We're dealing with linear functions. f(x) = mx + b, We have here the first function. g(x) = 3x That is a linear function with a slope and no linear coefficient because, However, because all of the functions below have the same slope value, they all describe parallel lines.
What is meant by parallel lines?In a plane, parallel lines are those whose distances between them are constant. Parallel lines do not cross. Lines that cross at a right angle of 90 degrees are said to be perpendicular.Two lines in the same plane that are equally spaced apart and never cross each other are referred to as parallel lines in geometry. They can be both horizontal and vertical. In our daily lives, parallel lines can be seen in the form of zebra crossings, lines of notebooks, and the nearby railroad tracks. Parallel lines are two straight lines that are never in contact and always remain at the same distance from one another: Scriven TV.Their non-zero linear coefficients are -6,-18,6,18, despite the fact that they all have the same slope value. The first one, though, was
[tex]$\begin{aligned} & h(x)=3(9 x-2) \rightarrow h(x)=27 x-6 \\ & i(x)=9(3 x-2) \rightarrow i(x)=27 x-18 \\ & j(x)=3(9 x+2) \rightarrow j(x)=27 x+6 \\ & k(x)=9(3 x+2) \rightarrow k(x)=27 x+18\end{aligned}$[/tex]
A possible solution would be adjusting any of these, whose operation would result in g(x)=3x, but
Like
[tex]$y=9\left(\frac{3 x}{9}-2\right)+18=3 x$[/tex]
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Write an equation in standard form that has a slope of –5/2
and a y-intercept of –2.
Answer:
y = -5/2x - 2
Water is poured into a clear triangular prism as shown to the left. It takes 5 cubic inches of water to fill the prism to the height of 1 inch. 15. What is the area of the BASE of this prism?
Roberto has $200 in spending money. He wants to buy some video games that cost $25.50 each.
I don’t know how to solve these questions. Or write a polynomial function in factored form.
Therefore , the solution of the given problem of polynomial function comes out to be -3x³ -x² - 2x + 3.
Describe polynomials.A polynomial is a mathematical statement with coefficients and error that uses only additions, erasures, multiplications, and powers of positive integer variables. There is just one indeterminate x polynomial identified by the formula x2 4x + 7. The term "polynomial" refers to an expression in mathematics that consists of variables (sometimes referred to as "indeterminates") and coefficients that can be added, deducted, multiplied, and increased to negative integer ones of non-variables. A polynomial is an algebraic expression having variables and coefficients.
Here,
Given :
=> - 5 , -4 ,- 3
=> -3 , -1 , -2 ,3
=> 1 , 2, 0
to write a polynomial function in factored form :
=> -5x² - 4x - 3
=> -3x³ -x² - 2x + 3
=> x² + 2x
Therefore , the solution of the given problem of polynomial function comes out to be -3x³ -x² - 2x + 3.
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13 points if you help! along with brainliness
The results of the mathematical multiplications contained in the annex to the question are:
27x34= 91864x45= 2,880103x26= 2,678537x42= 22,5542,539x 26= 66,0143,684x12= 44,2085x283x12= 16,980305x25= 7,625What is standard algorithm?It corresponds to the steps used to solve a mathematical problem, it is usually a method taught in elementary school, and is useful for solving problems with the mathematical operations of addition, subtraction, multiplication and division.
Therefore, to solve multiplication problems through the standard algorithm, the student must solve the problem by multiplying the problem in parts, that is, by multiplying one digit at a time from right to left, to arrive at the final solution.
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Malcolm and his father want to build a frame for their favorite poster. What strategy could they use to find out how much framing material they will need?
The strategy Malcolm and his father could use to find out how much framing material they will need is B. Measure all 4 sides with a ruler to find the perimeter. This will give them the total length of framing material they will need to surround the poster.
Measuring the area in inches with a ruler (option A) or measuring the poster in square inches (option C) will not give them the length of framing material required to surround the poster. Covering the poster with square inches great paper (option D) is also not an effective strategy to find out how much framing material they need. By measuring the perimeter, they can calculate the amount of framing material required and buy the correct length of framing material for their project.
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ethan is using his compass and straightedge to complete a construction of a polygon inscribed in a circle. which polygon is he in the process of constructing? (1 point)a circle with a diameter is drawn with two arc markings shown.
Ethan is in the process of constructing an equilateral triangle. So, option(A) is the correct answer.
Circle:
All points in a plane that are at a particular distance from a specific point, the center, form a circle.In other words, it is the curve that a moving point in a plane draws to keep its distance from a fixed point constant.Polygon:
In geometry, a polygon is any closed curve made up of a group of continuous line segments without any intersections.Triangles (three sides), quadrilaterals (four sides), and pentagons are the three basic polygons (five sides).Triangle:
A polygon that has three edges and vertices is called a triangle.ΔABC is the designation for a triangle with vertices A, B, and C.In Euclidean geometry, any three points that are not collinear make a distinct triangle and a distinct plane.Therefore, Ethan is in the process of constructing an equilateral triangle.
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The complete question is:
Ethan is using his compass and straightedge to complete the construction of a polygon inscribed in a circle. Which polygon is he in the process of constructing?
1. An equilateral triangle
2. A square
3. A regular pentagon
4. A regular hexagon
A and B are vertical angle. If angle A=(4x13) ∘and B=(7x4) ∘ then find the value of x
A and B are vertical angles. If angle A=(4x13) ∘and B=(7x4) ∘ then the value of x is 3.
Since A and B are vertical angles, they must and should have equal measures. Therefore, we can set the two expressions equal to each other and solve for x:
4x + 13 = 7x + 4
Subtracting 4 from both sides:
4x + 9 = 7x
Subtracting 4x from both sides:
9 = 3x
Dividing both sides by 3:
x = 3
So the value of x is 3.
After solving the x value, we should subtract 4 from both sides of the equation, which results in 4x + 9 = 7x. Then, we subtract 4x from both sides, then we get 9 = 3x.
Finally, we divide both sides of the equation by 3 to find that x = 3.
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. Let A be an arbitrary vector and let n be a unit vector in some fixed direction. Show that A = (An) + (xA)x
Let A be a vector and n be a unit vector in a fixed direction. The scalar projection of A onto n can be represented as:
An = A . n = ||A||cos(θ),
where θ is the angle between vectors A and n.
The projection of A onto a plane perpendicular to n can be represented as:
A - (An) = A - (||A||cos(θ))n = ||A||sin(θ)nₜ,
where nₜ is a unit vector perpendicular to n.
Combining these two results, we have:
A = (An) + (A - (An)) = (||A||cos(θ))n + ||A||sin(θ)nₜ
By doing so, it is demonstrated that a vector A may be written as the product of its scalar projection along a unit vector n and its projection onto a plane perpendicular to n. This breakdown of a vector is helpful for looking at its parts from various angles.
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