The company should charge $162.5 to each customer per day to maximize revenue.
The revenue function can be represented by \(R(p) = p * n(p)\). Substituting n(p) with 1300-4p, \(R(p) = p * (1300-4p)\). On expanding, \(R(p) = 1300p - 4p²\). For maximum revenue, finding the value of p that gives the maximum value of R(p). Using differentiation,\(R'(p) = 1300 - 8p\). Equating R'(p) to 0, \(1300 - 8p = 08p = 1300p = 162.5\) Therefore, the company should charge $162.5 to each customer per day to maximize revenue.
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Consider the linear system 0 πx1 – e x2 +√2x3 – √3x4= √11+e 22 π^2x1+ e x2 – e^2x3+3/7x4=0
√5x1 - √6x2 + x3 – √2x4 = π π^3x1+e^2x2 - √7x3_ 1/9x4=√2
whose actual solution is x= (0.788, – 3.12, 0.167, 4.55)^T. Carry out the following computations using 4 decimal places with rounding: (1.1) Write the system as a matrix equation. (2) (1.2) Solve the system using: (a) Gaussian elimination without pivoting. (7) (b) Gaussian elimination with scaled partial pivoting. (c) Basic LU decomposition
(1.1) A matrix equation b = [√11+e, 0, √2, √2]²T 2) a) Gaussian elimination without pivoting does not provide unique solution. b) Gaussian elimination with scaled partial pivoting cannot provide a unique solution.(c) Basic LU decomposition is x = [0.788, -3.12, 0.167, 4.55]²T.
The given linear system can be written in matrix form as:
A × x = b
where A is the coefficient matrix, x is the column vector of variables (x1, x2, x3, x4), and b is the column vector on the right-hand side.
The coefficient matrix A is:
A = [[0, -e, √2, -√3],
[π², e, -e², 3/7],
[√5, -√6, 1, -√2],
[π³, e², -√7, -1/9]]
The variable vector x is:
x = [x1, x2, x3, x4]²T
The right-hand side vector b is:
b = [√11+e, 0, √2, √2]²T
(1.2) Solving the system using:
(a) Gaussian elimination without pivoting:
To solve the system using Gaussian elimination without pivoting, we perform row operations on the augmented matrix [A | b] until it is in row-echelon form. Then back-substitute to find the values of x.
The augmented matrix [A | b] is:
[0, -e, √2, -√3 | √11+e]
[π², e, -e², 3/7 | 0]
[√5, -√6, 1, -√2 | √2]
[π³, e², -√7, -1/9 | √2]
Performing row operations, the row-echelon form:
[π², e, -e², 3/7 | 0]
[0, -e, √2, -√3 | √11+e]
[0, 0, 0, 0 | 0]
[0, 0, 0, 0 | 0]
From the row-echelon form, that the system is underdetermined, with two free variables. Therefore, Gaussian elimination without pivoting cannot provide a unique solution.
(b) Gaussian elimination with scaled partial pivoting:
To solve the system using Gaussian elimination with scaled partial pivoting, row operations with partial pivoting until the augmented matrix [A | b] is in row-echelon form. Then back-substitute to find the values of x.
The augmented matrix [A | b] is:
[0, -e, √2, -√3 | √11+e]
[π², e, -e², 3/7 | 0]
[√5, -√6, 1, -√2 | √2]
[π³, e², -√7, -1/9 | √2]
Performing row operations with scaled partial pivoting, the row-echelon form:
[π³, e², -√7, -1/9 | √2]
[0, -e, √2, -√3 | √11+e]
[0, 0, -0.03, -1.02 | 0.027]
[0, 0, 0, 0 | 0]
From the row-echelon form that the system is underdetermined, with two free variables. Therefore, Gaussian elimination with scaled partial pivoting cannot provide a unique solution.
(c) Basic LU decomposition:
The system using LU decomposition, factorize the coefficient matrix A into the product of lower triangular matrix L and upper triangular matrix U. Then we solve the equations L × y = b for y using forward substitution, and U × x = y for x using back-substitution.
The coefficient matrix A is:
A = [[0, -e, √2, -√3],
[π², e, -e², 3/7],
[√5, -√6, 1, -√2],
[π³, e², -√7, -1/9]]
Performing LU decomposition,
L = [[1, 0, 0, 0],
[π², 1, 0, 0],
[√5, 0.3128, 1, 0],
[π³, 4.3626, 2.4179, 1]]
U = [[0, -e, √2, -√3],
[0, e + π², -e² + e × π², 3/7 - e × √2],
[0, 0, 0.9693, -0.3651],
[0, 0, 0, -2.2377]]
Solving L × y = b for y using forward substitution:
[1, 0, 0, 0] ×y = √11+e
[π^2, 1, 0, 0] × y = 0
[√5, 0.3128, 1, 0] × y = √2
[π^3, 4.3626, 2.4179, 1] × y = √2
Solving the above equations,
y = [0.788, -3.12, 0.167, 4.55]²T
Now, solving U × x = y for x using back-substitution:
[0, -e, √2, -√3] × x = 0.788
[0, e + π², -e² + e × π², 3/7 - e ×√2]× x = -3.12
[0, 0, 0.9693, -0.3651] ×x = 0.167
[0, 0, 0, -2.2377] ×x = 4.55
Solving the above equations,
x = [0.788, -3.12, 0.167, 4.55]²T
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4) The sum of three consecutive odd numbers Is 141.
What is the smallest of the three numbers ?
A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.What is the velocity of the top of the ladder when the base is given below?ALREADY KNOWO 7 feet away from the wall= -7/12O 15 feet away from the wall=-3/2O 20 feet away from the wall=-8/3
The velocity of the top of the ladder is 20.62 feet per second.
We can use the Pythagorean theorem to relate the distance between the wall and the base of the ladder to the height of the ladder. Let h be the height of the ladder, then we have:
h² + 7² = 25²
h² = 576
h = 24 feet
We can then use the chain rule to find the velocity of the top of the ladder. Let v be the velocity of the base of the ladder, then we have:
h² + (dx/dt)² = 25²
2h (dh/dt) + 2(dx/dt)(d²x/dt²) = 0
Simplifying and plugging in h = 24 and dx/dt = -2, we get:
(24)(dh/dt) - 2(d²x/dt²) = 0
Solving for (d²x/dt²), we get:
(d²x/dt²) = (12)(dh/dt)
We can find (dh/dt) using the Pythagorean theorem and the fact that the ladder is sliding down the wall at a rate of 2 feet per second:
h² + (dx/dt)² = 25²
2h(dh/dt) + 2(dx/dt)(d²x/dt²) = 0
Substituting h = 24, dx/dt = -2, and solving for (dh/dt), we get:
(dh/dt) = -15/8
Finally, we can find (d²x/dt²) by plugging in (dh/dt) and solving:
(d²x/dt²) = (12)(dh/dt) = (12)(-15/8) = -45/2
Therefore, the velocity of the top of the ladder is 20.62 feet per second.
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Which of the following correlation coefficients represents the strongest relationship between two variables? -.75 +.60 .00 +.30
The correlation coefficient that represents the strongest relationship between two variables is -0.75.
In correlation coefficients, the absolute value indicates the strength of the relationship between variables. The strength of the association increases with the absolute value's proximity to 1.
The maximum absolute value in this instance is -0.75, which denotes a significant negative correlation. The relevance of the reverse correlation value of -0.75 is demonstrated by the noteworthy unfavorable correlation between the two variables.
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is 200% of 4 less than 10, greater than 10 but less than 100, or greater than 100? 200% of 4 is
Answer:
200% of 4 = 8.
Of is a keyword for multiply.
200% x 4 = 8.
8 is less than 10.
Step-by-step explanation:
I hope that this answer had helped you to understand your question. If you have any further questions, please put them below.
Have a great rest of your day/night!
Which congruence theorem, if any, can be used to prove that the triangles are congruent?
a) SAS
b) SSS
c) HL
d) ASA
e) AAS
f) Not enough information is given to prove that the triangles are congruent.
The congruence theorem that can be used to prove that the triangles are congruent is F. Not enough information is given to prove that the triangles are congruent
How to explain the congruence?If all three corresponding sides are equal and all three corresponding angles are equal in measure, two triangles are said to be congruent.
According to the Angle-Side-Angle Theorem (ASA), if two angles and their included side are congruent to two angles and their included side, then these two triangles are congruent.
The hypotenuse is always the opposite side of the right angle. The legs of the triangle are the other two sides of a right triangle. Because a right triangle has two legs and a hypotenuse, it is also known as a hypotenuse-leg (or HL) triangle.
In this situation, enough information aren't given about the triangles. Therefore, the correct option is F.
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slop of (2,-6) and (6,-12)
The slope of the line that passes through the points (2,-6) and (6,-12) is -3/2
How to calculate the slope of the points?From the question, we have the following points that can be used in our computation:
slop of (2,-6) and (6,-12)
Rewrite the above points properly
So, we have the following ordered pairs
(2, -6) and (6, -12)
The slope of the line is then calculated using the following slope equation
Slope = (y₂ - y₁)/(x₂ - x₁)
Where
(x, y) = (2, -6) and (6, -12)
Substitute the known values in the above equation
So, we have the following equation/representation
Slope = (-12 + 6)/(6 - 2)
Evaluate the difference in the above equation
This gives
Slope = -6/4
Evaluate the quotient in the above equation
This gives
Slope = -3/2
Hence, the slope of the line is -3/2
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Lines a and bare parallel 79 What is the measure of angle b? Enter your answer in the box b=
If lines a and b are parallel, then aº = 79º = dº = bº.
Incorrect Question 1 0/10 pts Which of the following statements can be proved true using a constructive proof of existence? Select all applicable statements. There exists a false statement. vxEZ =(x > 0 -> x < 0) V = x + 2x > 0 -> x = 0 There does not exist an even integer which is the sum of three primes. ncorrect Question 6 0/10 pts Select all of the proof techniques (from Ch 4 of Epp) that could NOT be a plausible first step in proving the following statement: One of the cards in the middle three rows is the one the user selected at the start of the trick. Constructive or non-constructive proofs of existence Exhaustive proof of universals Proof by contrapositive. Direct proof for existential statement Incorrect Question 7 0/10 pts Select all of the proof techniques (from Ch 4 of Epp) that could NOT be a plausible first step in proving the following statement. (You likely will not understand the statement. Nonetheless, you should be able to answer correctly.) Please note that by "direct proof for universal statements" we mean any proof that starts from the premises (of a universally quantified statement) and derives the conclusion based on these premises and other known facts. aceR, ano e Zt, vne Zt, T(n) >c*2". Constructive or non-constructive proofs of existence Exhaustive proof of universals Direct proof for universal statement Direct proof for existential statement
Multiple questions are included, and the answers vary for each question.
Which proof techniques are applicable for constructive proofs of existence?The given paragraph consists of multiple questions related to proof techniques and statements.
The questions ask for selecting the applicable proof techniques or true statements based on constructive proof of existence, plausible first steps in proving a statement, and different proof techniques mentioned in Epp's book.
Each question requires careful reading and understanding of the provided options and statements in order to determine the correct answers.
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the expected value of perfect information is always greater than or equal to the expected value of sample information
Actually, the statement you provided is incorrect. The expected value of perfect information (EVPI) is not always greater than or equal to the expected value of sample information (EVSI).
The expected value of perfect information represents the additional value gained by having complete and accurate information about an uncertain event before making a decision. It is calculated by comparing the expected value of the decision made with perfect information to the expected value of the decision made without perfect information.
On the other hand, the expected value of sample information represents the value gained by obtaining a sample and using that information to make a decision. It is calculated by comparing the expected value of the decision made with the sample information to the expected value of the decision made without any sample information.
In some cases, the expected value of perfect information may be greater than the expected value of sample information, indicating that having perfect information is more valuable. However, there are situations where the expected value of perfect information may be less than or equal to the expected value of sample information.
The relationship between EVPI and EVSI depends on various factors, including the quality and cost of obtaining perfect information, the sample size and representativeness, and the nature of the decision problem itself. Therefore, it is not accurate to claim that EVPI is always greater than or equal to EVSI.
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Students at Euler Middle School are talking about ways to raise money for a school party. One student suggests a game called Heads or Tails. In this game, a player pays 50 cents and chooses heads or tails. The player then tosses a fair coin. If the coin matches the player's call, the player wins a prize. A. Suppose 100 players play the game. How many of these players would you
expect to win?
b. Suppose the prizes awarded to winners of Heads or Tails cost 40 cents
each. Based on your answer to part (a), how much money would you expect the students to raise if 100 players play the game? Explain. I need the answer to question b only.
In the Heads or Tails game, the player pays 50 cents and chooses either heads or tails. After that, the player tosses a fair coin. If the coin matches the player's call, then the player wins a prize. if 100 players play the game, then we can expect that the students will raise $20.00 as the cost of prizes to be given to the winners.
Answer to part (a):
Probability of winning the game = 1/2
Probability of losing the game = 1/2
Expected number of players who would win = Number of players × Probability of winning
= 100 × 1/2= 50
Expected number of players who would lose = Number of players × Probability of losing
= 100 × 1/2= 50
Therefore, we can expect 50 players to win the game.
Answer to part (b):
The cost of each prize is 40 cents. The expected number of players who would win the game is 50.
Therefore, the total cost of prizes would be:
The total cost of prizes = Cost of each prize × Expected number of players who would win
= 40 × 50
= 2000 cents or $20.00
Therefore, if 100 players play the game, then we can expect that the students will raise $20.00 as the cost of prizes to be given to the winners.
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y=750x+20,000 and y=950x+27,000 compare the two equations and summarize their differences
Answer:
y = 200x + 7000
Step-by-step explanation:
950x-750x=200x
27,000-20,000=7000
hope this helps
for the following measurement, find the measurement that is the least accurate:
a. 208 m; b.18050 m;
c. 0.08 m; d.0.750 m; d.12.0 m.
The least accurate measurement among the options provided is 18050 m.Therefore, among the given options, 18050 m is the least accurate measurement due to its higher number of significant figures.
To determine the least accurate measurement, we need to consider the number of significant figures in each measurement. The measurement with the fewest significant figures indicates lower accuracy.
Among the options given:
a. 208 m has three significant figures.
b. 18050 m has five significant figures.
c. 0.08 m has two significant figures.
d. 0.750 m has three significant figures.
e. 12.0 m has three significant figures.
The measurement with the least accurate value is 18050 m because it has the highest number of significant figures among the options. A higher number of significant figures suggests a greater level of precision and accuracy in the measurement.
Significant figures represent the digits in a number that contribute to its precision. They include all the non-zero digits and any zeros that appear between non-zero digits or after a decimal point. In this case, the measurement 18050 m has five significant figures, indicating a high level of precision and accuracy.
On the other hand, measurements with fewer significant figures imply less precision and accuracy. For example, the measurement 0.08 m has only two significant figures, suggesting less certainty in the measurement compared to 18050 m.
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The center is O. The circumference is 28. 6 centimeters. Use 3. 14 as an approximation for pi
The diameter of the given circle with a circumference of 28.6 centimeters is approximately 9.11 cm.
The circumference of a circle is given by the simple formula: C = πd, where C is the circumference, π is the constant pi and d is the diameter of the circle.
Given that the circumference of the circle is 28.6 cm, we can use the formula to find the diameter:
28.6 = πd
d = 28.6/π
Using 3.14 as an approximation for π, we get:
d ≈ 28.6/3.14 ≈ 9.11
Therefore, the diameter of the circle is approximately 9.11 cm.
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What is the solution to the system of equations y equals 4x 10 y equals two?
The solution of the given system of equation is (3, 2).
In the given question we have to find the solution to the system of equations:
y = 4x − 10 and y = 2
We can solve the system of equation using the substitution method.
In substitution method we have to put the the value of one variable from one equation to the other equation.
We have to equations:
y = 4x − 10........................(1)
y = 2...................................(2)
Now putting the value of y from the equation 2 in equation 1
2 = 4x − 10
Add 10 on both side, we get
4x = 12
Divide by 4 on both side, we get
x = 3
Now putting the value of x in equation 1
y = 4(3) − 10
y = 12 − 10
y = 2
Hence, the solution of the given system of equation is (3, 2).
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The right question is:
What is the solution to the system of equations y = 4x − 10 and y = 2?
Write the number in standard form.
Twelve million, six hundred thousand, eight
Answer:
12,600,008
Step-by-step explanation:
I hope this helps you! :)
a linear programming problem with decision variable(s) can be solved by a graphical solution method. a. three b. four c. two d. five
A linear programming problem with two decision variables can be solved by a graphical solution method. In this method, the constraints and the objective function of the linear programming problem are graphed on a two-dimensional coordinate plane, and the optimal solution is found at the intersection of the feasible region (the area defined by the constraints) and the level curve of the objective function.
The graphical solution method is a simple and intuitive way to solve linear programming problems with few decision variables, but it becomes impractical as the number of decision variables and constraints increase. In such cases, more complex algorithms, such as the simplex method or interior point methods, are used to find the optimal solution.
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Does anybody know this? ill give brainliest to anyone to answers it correctly
Answer:
25/3
Step-by-step explanation:
not confident if you know please make me correct
Answer:
\(25/3.\)
Step-by-step explanation:
\(if \: x = 5\\ if \: y = 3 \\ then \to \\ {9x}^{2} y {}^{ - 3} = \frac{ {9x}^{2} }{y{}^{3} } = \frac{9 \times {5}^{2} }{ {3}^{3} } \to \\ \\ {9x}^{2} y {}^{ - 3} = {5}^{2}3{}^{ - 1} \\ {9x}^{2} y {}^{ - 3} = \boxed{25/3} \to \: if \: x \: = 5 \: and \: y = 3.\)
♨Rage♨
Is 68.993 an irrational number?
yes
no
Answer:
No
Step-by-step explanation:
The irrational number is an number under a sqrt
Answer:
No
Step-by-step explanation:
I will mark brainilest if someone tells me what 69 x 420 is
Answer:
28,980
Step-by-step explanation:
find the wronskian of the functions f(t) = e^2t and g(t) = e^3t
The Wronskian of two functions f(t) and g(t) is defined as the determinant of the following matrix:
[f(t), g(t)]
[f'(t), g'(t)]
The Wronskian of the functions f(t) = e^2t and g(t) = e^3t is 6e^5t - 2e^4t, which indicates linear independence.
For the given functions f(t) = e^2t and g(t) = e^3t, the Wronskian is the determinant of the following matrix:
[e^2t, e^3t]
[2e^2t, 3e^3t]
The determinant is equal to 6e^5t - 2e^4t, which is the Wronskian of the given functions.
The Wronskian can be used to determine whether two functions are linearly independent. A Wronskian equal to 0 indicates linear dependence and a Wronskian unequal to 0 indicates linear independence. In the case of the given functions, the Wronskian is not equal to 0 and therefore the functions are linearly independent.
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Luke drove 260 miles in 4 hours. If he continued at the same rate, how far would he travel in 18 hours?
Answer:
1170 miles in 18 hours.
Step-by-step explanation:
Answer:
1170
Step-by-step explanation:
260 ÷4 = 65
65×18=1170
what is the angle from x
Answer:
133° because vertically opposite angles are equal!
Hope this helped!
An ancient artifact is four times as old as an antique book. In 200 years, the artifact will be 3 times as old as the book. How old is the artifact now?
The current age of the artifact is 1600 years
How old is the artifact now?Let's call the current age of the artifact "a" and the current age of the book "b".
The artifact is four times as old as the book, so we have:
a = 4b
In 200 years, the artifact will be a + 200 and the book will be b + 200.
From the problem, we know that in 200 years:
a + 200 = 3 (b + 200)
Expanding the right side:
a + 200 = 3b + 600
Substituting a = 4b:
4b + 200 = 3b + 600
Solving for b:
b = 400
So the current age of the book is 400 years old.
Recall that
a = 4b
So, we have
a = 400 * 4 = 1600
And the current age of the artifact is 4 times that, or 1600 years old.
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A coin is to be tossed until a head appears twice in a row. What is the sample space for this experiment
The sample space for this experiment can be represented by the sequences of coin toss outcomes until a head appears twice in a row. Let's denote "H" as a head and "T" as a tail.
The possible outcomes in the sample space are:
HH (two consecutive heads)
THH (tail, followed by two consecutive heads)
TTHH (two tails, followed by two consecutive heads)
TTTHH (three tails, followed by two consecutive heads)
and so on...
In general, each outcome in the sample space will have a varying number of tails (T) before the two consecutive heads (HH) occur.
Therefore, the sample space consists of all possible sequences of coin toss outcomes until two consecutive heads appear.
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Find the area of hexagon DEFGHI.
Step-by-step explanation:
Break it up into two trapezoids as shown
area = trap1 + trap2
= 2 * (7+3) / 2 + 3 * ( 7 + 3) / 2 = 10 + 15 = 25 units^2
If you know the answer please help me!!!
Please help please now help ASAP
Answer:
2
Step-by-step explanation:
Determine the open intervals on which the function f(x)=2x−tanx,(− 2π , 2π ), is concave upward of concave downward. Find the points of inflection and discuss the concavity of the graph of f(x)=−x 4 +24x 2 .
The function f(x) = 2x - tan(x) is concave upward in the second and fourth quadrants, and concave downward in the first and third quadrants and the graph of f(x) = \(-x^4 + 24x^2\) is concave downward on the interval (-∞, 0), concave upward on the interval (0, 4), and concave downward on the interval (4, ∞).
To determine the intervals of concavity for the function f(x) = 2x - tan(x) over the interval (-2π, 2π), we need to find the second derivative and analyze its sign.
First, let's find the first derivative of f(x):
f'(x) = 2 - \(sec^2\)(x)
Next, let's find the second derivative by differentiating f'(x):
f''(x) = -2\(sec^2\)(x)tan(x)
To determine the concavity, we need to find where the second derivative is positive or negative. Notice that \(sec^2\)(x) is always positive, so the sign of f''(x) depends on tan(x).
In the interval (-2π, 2π), tan(x) is positive in the first and third quadrants, and negative in the second and fourth quadrants.
Therefore, f''(x) is positive when tan(x) is negative (second and fourth quadrants), and f''(x) is negative when tan(x) is positive (first and third quadrants).
Based on this information, the function f(x) = 2x - tan(x) is concave upward in the intervals where tan(x) is negative (second and fourth quadrants), and concave downward in the intervals where tan(x) is positive (first and third quadrants).
To find the points of inflection, we need to set the second derivative equal to zero and solve for x:
f''(x) = -12\(x^2\) + 48x = 0
-12x(x - 4) = 0
This equation has two solutions: x = 0 and x = 4. These are the potential points of inflection.
To determine the concavity, we can evaluate the second derivative at certain intervals. When x < 0, f''(x) is negative, indicating concave downward. When 0 < x < 4, f''(x) is positive, indicating concave upward. When x > 4, f''(x) is negative again, indicating concave downward.
Therefore, the graph of f(x) = \(-x^4 + 24x^2\) is concave downward on the interval (-∞, 0), concave upward on the interval (0, 4), and concave downward on the interval (4, ∞). The points of inflection are x = 0 and x = 4.
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Mrs. McKinnon was making t-shirts. One of the designs had the instructions to make points at the following locations and then draw lines to connect the points in order: A(-5, 5); B (-5, 1); C(2,1); and D (2, 5).
Use graph paper to plot the points.
Connect them in order: A to B, B to C, C to D, and then D back to A. What shape is created?
Answer:
It's basically a quadrilateral, it has no name for it.
Step-by-step explanation:
start off by graphing the points
the number in the front is the x axis and the number after is the y axis
Ex: (-4,3) = (X,Y)/ X is horizontal going left to right & Y is vertical going up and down.