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Answer:
why arent you doing the quiz yourself do it yourself thats cheating.
Step-by-step explanation:
Related Questions
Help lssshjwejjwkwkwwkk
Answers
61 matchsticks need to make 20 squares.
Given,
From the figure,
Matchsticks are used to make the pattern.
To make these 4 squares, you need 13 matchsticks.
To find the how many matchsticks do you need to make 20 squares?
Now, According to the question:
Let the need matchsticks be 'n'
The number of the squares to make 1 square , you need 4 matchsticks,
and when you need to add one square, you need three more matchsticks .
So , we have to make n no. of squares you need
4 + 3(n - 1) matchsticks (n \(\geq\) )
= 4 + 3n - 3
= 1 + 3n
When, n = 20
1 + 3 x 20
= 61
Hence, 61 matchsticks need to make 20 squares.
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Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data.
a)x-valuesResiduals
A scatterplot with horizontal axis labeled "x-values" and vertical axis labeled "Residuals" contains points that appear randomly distributed.
b)x-valuesResiduals
A scatterplot with horizontal axis labeled "x-values" and vertical axis labeled "Residuals" contains points whose general pattern is a curve that falls and then rises from left to right.
c)x-valuesResiduals
A scatterplot with horizontal axis labeled "x-values" and vertical axis labeled "Residuals" contains points that have a wide vertical range on the left side of the plot and which become more and more tightly clustered from left to right. Points on the right side of the graph tightly follow the path of a horizontal line.
Question content area bottom
(a) Choose the best answer for residuals plot (a).
A The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases
as the values of the explanatory variable increases.
OB. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power increases
as the values of the explanatory variable increases.
Oc. The scattered residuals plot indicates an appropriate linear model.
h
(b) Choose the best answer for residuals plot (b).
OA. The scattered residuals plot indicates an appropriate linear model.
OB. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship
is not linear.
Oc. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases
as the values of the explanatory variable increases.
Answers
Answer:
(a) The best answer for residuals plot (a) is:
A. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases.
A fanned pattern in the residuals plot suggests that the linear model is not appropriate because the variability of the residuals increases as the values of the explanatory variable increases. This indicates that the linear model is not capturing all the important features of the data and may not be the best fit for the data.
(b) The best answer for residuals plot (b) is:
B. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship is not linear.
A curved pattern in the residuals plot suggests that the linear model is not appropriate because the relationship between the variables is not linear. This indicates that the linear model is not capturing all the important features of the data and may not be the best fit for the data.
The diagram shows the cross section of a solid metal prism of height 32
cm.
AD = 8.7 cm, AC = 8cm, AB = 6.4cm, BC = 4.8cm and CD = 3.3cm.
Find the volume of the prism in cm3
Type each step of your working on a separate line
Answers
Answer:
need this !
Step-by-step explanation:
Mitch wants to buy a poster to put on the wall between his bathroom door and closet door. There is exactly 22.25 inches of space between the doors. What could be the width of the poster?
Answers
Answer:
22.25 inches
Step-by-step explanation:
Since in the question it is mentioned that the mitch wants to buy a poster and wants to put on a wall that is between his door of the bathroom and the closet door
Also the space between these two doors is 22.25 inches
So based on the above information, the width of the poster should be equivalent to the given space i.e. 22.25 inches and the same is to be considered
Answer:
Mitch wants to buy a poster to put on the wall between his bathroom door and closet door. There is exactly 22.25 inches of space between the doors. What could be the width of the poster? (The poster needs to fit on the wall, so it needs to be smaller or equal to the width between the doors
Step-by-step explanation:
4. John is packing books into boxes. Each box can hold either 15 small books or 8
large books. He needs to pack at least 35 boxes and at least 350 books, Write a
system of linear inequalities to represent the situation
Answers
Answer:
Your system of inequalities is:
x + y ≥ 35
15x + 8y ≥ 350
Step-by-step explanation:
Let x = number of boxes of small books and let y = number of boxes of large books.
Since John needs to pack at least 35 boxes:
(number of boxes of small books) + (number of boxes of large books) (is at least) 35
x + y ≥ 35
Since John needs to pack at least 350 books:
(number of small books packed) + (number of large books packed) (is at least) 350
(number of small books per box)(number of boxes of small books) + (number of large books per box)(number of boxes of small books) ≥ 350
15x + 8y ≥ 350
Solve the left side:
10+7x−5=5x−3+2(x+4)
Answers
Answer: 0 = 0
Step-by-step explanation:
When using the normal approximation to the binomial, what is the mean for a binomial probability distribution with p =.32 and n = 150?Nxp
Answers
The mean of a binomial probability distribution with p = 0.32 and n = 150 is 48
The binomial distribution is a probability distribution that describes the number of successes in a fixed number of independent trials, where each trial has the same probability of success, denoted by p. In the case of a binomial distribution with n trials and probability of success p, the mean, or expected value, is equal to the product of the number of trials and the probability of success, which is np.
In this case, the problem provides the values of p and n, which are p = 0.32 and n = 150, respectively. Therefore, the mean can be calculated by multiplying these two values
μ = np = 150 x 0.32 = 48
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If a = -3x and b = -3 - 2i, then find the value of a^3b in fully simplified form
Answers
Answer:
81x³ + 54x³i
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
Identify
a³b
a = -3x
b = -3 - 2i
Step 2: Expand
Substitute in variables: (-3x)³(-3 - 2i)Evaluate exponents: -27x³(-3 - 2i)Distribute: 81x³ + 54x³iThis is a crossword puzzle for math terms,
i tried my best to solve them but i cant! can someone please help?
Answers
Across:-
1. co- interior
5. alternate
7 . transversal line
8. exterior angle
Down:-
2. skew lines
3. Parallel lines
4. corresponding
6. alternate exterior
Select the correct answer.
Julissa is printing out coples for a work training. It takes 4 minutes to print a color copy, and It takes 2 minutes to print a grayscale copy. She
needs to print no fewer than 8 coples within 25 minutes.
Which system of Inequalities represents the number of color copies, ×, and grayscale coples, y, that Julissa can print to meet her goal?
Answers
The system of inequalities that represents the number of copies that Julissa can print to meet her goal is given by:
\(x + y \geq 8\).\(4x + 2y \leq 25\).What is a system of inequalities?A system of equations is when two or more variables are related, and inequalities are built to find the values of each variable.
The variables are given as follows:
Variable x: Number of color copies.Variable y: Number of gray scale copies.She needs to print no fewer than 8 copies, hence:
\(x + y \geq 8\).
It takes 4 minutes to print a color copy and 2 minutes to print a grayscale copy. She has at most 25 minutes, hence:
\(4x + 2y \leq 25\).
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What is the length of the diagonal, d, of the cube shown below?
Round your answer to the nearest tenth
Answers
Answer:
103.8
Step-by-step explanation:
Length of diagonal of a cube is given by the formula:
\(d = side \times \sqrt{3} \\ \\ \therefore \: d = 60 \times \sqrt{3} \\ \\ \therefore \: d = 60 \times 1.73 \\ \\ \therefore \: d = 103.8 \: units\)
The length of the diagonal of the cube is 103.9 units.
What is a cube?
A cube is a three dimensional figure or object which has all the side with equal length.
The length of each side of the cube = a = 60 units.
Therefore, the length of the diagonal of the cube = d = a\(\sqrt{3}\) = 60\(\sqrt{3}\) units = 103.9 units.
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A square and rectangle are shown below. The width of the rectangle is the same as
the length
of a side of the square, both represented by .x. The length of the rectangle is one
foot more
than twice its width. The perimeter of the rectangle is 26 feet more
than that of the square.
(a) Write an expression for the length of the rectangle in
terms of.x. Label on the drawing.
x
Answers
Answer:
Step-by-step explanation:
x=26
1a)Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.)
tan(theta) = − 2/3
theta = rad
1b)Find all solutions of the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.)
2cos^2(theta) − 1 = 0
theta = rad
1c)Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)
sin^2(theta) = 6 sin(theta) + 7
theta =
1d)Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)
sin(theta) cos(theta) − 7 sin(theta) = 0
theta =
please answer in correct format.
Answers
The οnly sοlutiοn is sinθ = 0, θ = kπ, where k is any integer.
What are trigοnοmetric functiοns?Trigοnοmetric functiοns are mathematical functiοns that relate tο the angles and sides οf a right-angled triangle. These functiοns can be used tο calculate the relatiοnships between the sides and angles οf a triangle.
1a) Using inverse tangent functiοn,
θ = tan^{-1}(-2/3) ≈ -0.93 + kπ οr 2.21 + kπ, where k is any integer.
1b) Using cοsine functiοn,
\(2cos^{2}\theta - 1 = 0\)
\(cos^{2}\theta= 1/2\)
cοsθ = ±√(1/2) = ±1/√2
Sο, θ = π/4 + kπ/2 οr 3π/4 + kπ/2, where k is any integer.
1c) Rearranging the equatiοn, we get
\(sin^{2}\theta - 6sin\theta- 7 = 0\)
Using the quadratic fοrmula,
sinθ = [6 ± √(36 + 28)]/2 = 3 ± √19
Since -1 ≤ sinθ ≤ 1, the οnly sοlutiοn is
sinθ = 3 - √19
\(θ = sin^{(-1)(3 - \sqrt{19})} \approx 0.47 + 2k\pi\) οr π - 0.47 + 2kπ, where k is any integer.
1d) Factοring οut sinθ frοm the equatiοn, we get
sinθ(cοsθ - 7) = 0
Sο, either sinθ = 0 οr cοsθ = 7. Since -1 ≤ sinθ, cοsθ ≤ 1, the οnly sοlutiοn is
cοsθ = 7 has nο real sοlutiοn, sο the οnly sοlutiοn is
sinθ = 0
θ = kπ, where k is any integer.
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How do you find an expression for a cubic function f if f(5) = 300 and f(−5) = f(0) = f(6) = 0?
Answers
The expression for the cubic function f is -5x^3 + 20x^2 - 25x.
To find an expression for a cubic function f(x) given specific values, we can start by using the general form of a cubic function: f(x) = ax^3 + bx^2 + cx + d.
We are given three points on the graph of the function: (5, 300), (-5, 0), and (0, 0), as well as (6, 0) which gives us a fourth point.
Substituting the x and y values into the equation, we get the following system of equations:
For point (5, 300):
300 = a(5^3) + b(5^2) + c(5) + d
For point (-5, 0):
0 = a(-5^3) + b(-5^2) + c(-5) + d
For point (0, 0):
0 = a(0^3) + b(0^2) + c(0) + d
For point (6, 0):
0 = a(6^3) + b(6^2) + c(6) + d
Simplifying these equations, we obtain a system of linear equations in terms of a, b, c, and d. Solving this system will give us the coefficients for the cubic function.
After solving the system, we obtain the expression for the cubic function:
f(x) = -5x^3 + 20x^2 - 25x
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soz, my teacher basically posted a whole buncha homework for us and never told us, neither did our sub...and its due tmrw...and me kinda needz helpz...yea~
Answers
Answer:
n=9
Step-by-step explanation:
3 x 3 = 9
4 x 3 = 12
6 x 3 ==18
9 x 3 =27
The point 3/4 of the way from A(-4,- 7) to B(12, 5)
Answers
Answer:
The coordinates of C are (8,2)
Step-by-step explanation:
We are given the segment from A(-4,-7) to B(12,5) and it's required to find a point C(x,y) that is located at 3/4 of the distance from A to B.
This means that:
\(d_{AC}=3/4\cdot d_{AB}\)
where dAC is the distance from A to C and dAB is the distance from A to B.
The same proportion of the distances is satisfied by the coordinates of the point C, that is:
\(\displaystyle x-x_A=\frac{3}{4}(x_B-x_A)\)
Adding xA:
\(\displaystyle x=\frac{3}{4}(x_B-x_A)+x_A\)
\(\displaystyle x=\frac{3x_B+x_A}{4}\)
Similarily:
\(\displaystyle y=\frac{3y_B+y_A}{4}\)
Calculating:
\(\displaystyle x=\frac{3(12)-4}{4}\)
x = 8
\(\displaystyle y=\frac{3(5)-7}{4}\)
y = 2
The coordinates of C are (8,2)
Problems 16 through 21 are based on the following data. Observations of the demand for a certain part stocked at a parts supply depot during the calendar year 1999 were 16. Determine the one-step-ahea
Answers
The one-step-ahead demand forecast for a part can be determined using forecasting methods such as moving averages, exponential smoothing, or regression analysis.
the question mentions "observations of the demand for a certain part stocked at a parts supply depot during the calendar year 1999." From this, we can assume that the demand for this part was recorded over the course of the year.
The question also mentions "one-step-ahead demand forecast" without providing further details. In general, a one-step-ahead demand forecast is a prediction of the demand for a certain period based on historical data.
To determine the one-step-ahead demand forecast, you would typically use forecasting methods such as moving averages, exponential smoothing, or regression analysis. These methods analyze the historical demand data and use it to predict future demand.
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Any has 10 pieces of fruit. 7 are apples and the rest are oranges.
She chooses a piece of fruit at random eats it then chooses a second piece of fruit at random
Please draw this
Answers
The fraction which should go into the boxes marked A and B in their simplest form is 3/4 and 1/4 respectively.
What fraction should go into the boxes?Total number of fruits Amy has = 10
Number of Apples = 7
Number of Oranges = 3
First random pieces of fruits chosen:
Probability of choosing Apples = 6/9
Probability of choosing Oranges = 3/9
Second random pieces of fruits chosen:
Probability of choosing Apples = 6/8
= 3/4
Probability of choosing Oranges = 2/8
= 1/4
Therefore, the probability of choosing Apples or oranges as the second piece is 3/4 or 1/4 respectively.
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If correct i will mark you brailnliest
Answers
i just multiplied them
Answer:
If it's the area of the parallelogram, then it's 21.5m². But if it's the area of the red triangle, then it's 10.75m². Together, they are both 32.25m².
Step-by-step explanation:
If 70% of a number is 224 and 20% of the same number is 64, find 90% of that number.
Answers
Answer:
the answer is 320.
Step-by-step explanation:
really not that hard. 64*5=320. 224/.7=320.
if y=27 when x=12, find x when y=-12
Answers
Answer:
x = - 36
Step-by-step explanation:
Given that y varies inversely as x then the equation relating them is
y = ← k is the constant of variation
To find k use the condition y = 27 when x = 12, then
k = yx = 27 × 12 = 324, thus
y = ← is the equation of variation
When y = - 9, then
- 9 = ( multiply both sides by x )
- 9x = 324 ( divide both sides by - 9 )
x = - 36
Explain how you can prove your observations in Questions 3 and 5 using a traditional proof. You don’t need to develop the steps of the proof; simply describe an approach that you might use. Which theorems might appear in your proof?(Hint: Draw a diagonal on the parallelogram to assist you in describing an approach.)
Answers
Answer:
A diagonal divides the parallelogram into two triangles. If I can prove that the two triangles are congruent, then the corresponding angles and corresponding sides of those two triangles must be congruent. To prove triangle congruency, I can use the properties of the angles formed when parallel lines are cut by a transversal.
Step-by-step explanation:
PLATO Geometry answer
Answer:
Step-by-step explanation:
A diagonal divides the parallelogram into two triangles. If I can prove that the two triangles are congruent, then the corresponding angles and corresponding sides of those two triangles must be congruent. To prove triangle congruency, I can use the properties of the angles formed when parallel lines are cut by a transversal.
Help me with this easy math question, please. I don't understand it, but it's said to be simple. Please and thank you in advance.
Answers
Answer:
$850.50
Step-by-step explanation:
Once you find the square footage of the triangle, that being 486 sq ft, you multiply by 1.75, the cost of the deck per sq ft, you get $850.50
Find the value of x. ROUND TO THE NEAREST TENTH
Answers
Answer:
Hey!! Please uplaod the picture or the full problem! Heres a little tip though: if you have all the other variables, subsitute them in int o(whatever equation) you have to get x!
Step-by-step explanation:
Show your work on how you got the answer
please helppp
Answers
Answer:
250
Step-by-step explanation:
4/16 = 1/4 = .25
When dividing exponents, subtract the bottom from the top, so \(10^{5}\)÷\(10^{2}\) = \(10^{3}\)
So, .25 * \(10^{3}\) = 250
calculate least squares solution using svd a matrix has the singular value decomposition what is the solution to the least-squares problem that has minimal norm ?
Answers
The Least-squares problem that has minimal norm can be given using factorization.
The least squares method is used to find the best fit for a set of data points by minimizing the sum of the offsets from the plotted curve. Singular value decomposition (SVD) is a factorization of a real or complex matrix.
It is a widely used technique to decompose a matrix into several component matrices, exposing many of the useful and interesting properties of the original matrix. The singular value decomposition, guaranteed to exist, is A=UΣV.
When we have the equation system Ax=b, we calculate the SVD of A as A=UΣVT. The matrices U and VT have a very special property. They are unitary matrices. One of the main benefits of having unitary matrices like U and VT is that if we multiply one of these matrices by its transpose (or the other way around), the result equals the identity matrix.
The singular value decomposition (SVD) of matrix A is very useful in the context of least squares problems. It is also very helpful for analyzing the properties of a matrix.
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Your grandmother has been putting $5,000 into a savings account on every birthday since your first that is, when you turned one). The account pays an interest rate of 7% How much money will be in the account medialty after your grandmother makes the deposit on your 18th birthday The amount in the account upon your 18th birthday is (Round to the nearest dollar)
Answers
After your grandmother makes a $5,000 deposit on your 18th birthday, the amount in the savings account can be calculated using compound interest. Assuming the account pays an interest rate of 7%, the amount in the account immediately after the deposit can be determined by applying the compound interest formula.
To calculate the amount in the savings account after the deposit on your 18th birthday, we can use the compound interest formula: A = P(1 + r/n)^(nt), where A represents the final amount, P is the principal (initial deposit), r is the interest rate, n is the number of times interest is compounded per year, and t is the number of years.
In this case, the initial deposit is $5,000, the interest rate is 7% (or 0.07 as a decimal), and the deposit is made on your 18th birthday, which means the time is 17 years. Since no information is given about the compounding frequency, let's assume it is compounded annually (n = 1).
Plugging in the values into the compound interest formula, we have A = 5000(1 + 0.07/1)^(1*17) = 5000(1.07)^17 ≈ $15,128.
Therefore, the amount in the savings account immediately after your grandmother makes the deposit on your 18th birthday is approximately $15,128, rounded to the nearest dollar.
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Please answer it now in two minutes
Answers
Answer:
59.0
Step-by-step explanation:
Given a right angled triangle, ∆XYZ, to know which trigonometric ratio formula to apply in finding the measure of angle X, note the following:
Opposite side to angle X = 6
Hypotenuse = 7
Therefore, we would apply the following trigonometric ratio formula to solve for m<X:
\( sin X = \frac{6}{7} \)
\( sin X = 0.8571 \)
\( X = sin^{-1}(0.8571) \)
\( X = 58.99 \)
\( m < X = 59.0 \) (rounded to nearest tenth)
the __________ of the line is the solution of the system
Answers
Answer:
The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.
Step-by-step explanation:
answer please need asap
Answers
Answer:
A: 8/31
B: 5/13
C: The events are dependent because one happening doesn't effect the other happening, sometimes it just happens that it rains and snows on the same day
Step-by-step explanation:
A - A is 8/31 because of the 31 days 8 of them snow (combined from snow and both)
B - There are 13 days that it rains and on 5 of those days it also snows