I’m so confused please help!!
Answer:
(3,1)
Step-by-step explanation:
Y axis = Arrow that goes up and Down
X axis = Arrow that goes from left to right
To find point J, you have to go up 3 on the Y axis.
Then, go to the right once.
now that your on point J, you have to write the coordinates.
(Y axis, X axis) = (3,1)
Mari spends $6 on cheese for a party she also plans to buy b boxes of crackers that cost $3 per box
Answer:
The answer is 6+3b<or equal to 15
Step-by-step explanation:
Reiko asked her classmates a question to get the following data about weekend activities. Which of these is a statistical question that Reiko might have asked
A statistical question is the one that can be answered by collecting data that vary. Here, the question about weekend activities, which can vary for different people, can be a statistical question.
The question that Reiko might have asked is: "What are the weekend activities that you do?" This is a statistical question as the answers to this question will vary from person to person. Some people may prefer to spend time with family, some might like to go out and watch movies, and others might like to read books or play games. Since there are many possible answers to this question, it makes it a statistical question.Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. A statistical question is a question that can be answered by collecting data that varies. These types of questions help to gather useful information that can be analyzed to find patterns, trends, and relationships between different variables.
Thus, the question that Reiko might have asked about weekend activities, "What are the weekend activities that you do?", is a statistical question because the answers to this question will vary for different people. This type of question helps to collect useful information that can be analyzed and used to find patterns, trends, and relationships between different variables.
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Which statement about a right triangle is NOT true?
Brainliest question please help please help me now plz
Answer:
Option A) Inside the circle
Step-by-step explanation:
step 1
Find the radius of the circle
we know that
The radius is equal to the distance from the center to any point on the circle
the formula to calculate the distance between two points is equal to
\(d\sqrt{(y2-y1)^2+(x2-x1)^2 }\)
we have
A(-5,-8),M(-1,-3)
substitute the values
\(r=\sqrt{(-3+8)^{2}+(-1+5)^{2}}\)
\(r=\sqrt{(5)^{2}+(4)^{2}}\)
\(r=\sqrt{41}\ units\)
step 2
Find the distance from the center to point V
we know that
If the distance from the center to point V is equal to the radius, then the point V lie on the circle
If the distance from the center to point V is less than the radius, then the point V lie inside the circle
If the distance from the center to point V is greater than the radius, then the point V lie outside the circle
we have
A(-5,-8),V(-11,-6)
substitute in the formula
\(d=\sqrt{(-6+8)^{2}+(-11+5)^{2}}\)
\(d=\sqrt{(2)^{2}+(-6)^{2}}\)
\(d=\sqrt{40}\ units\)
so
\(\sqrt{40}\ units< \sqrt{41}\ units\)
The distance from the center to point V is less than the radius
therefore
The point V lie inside the circle
Hope that helped :)
how many ways can you distribute 6 faceless players over 4 servers (each of the servers are identical)?
Therefore, there are 4 x 1128 = 4512 possible 5 card poker hands with at least 3 aces that can be dealt from a standard deck of 52 cards.
1. There are 4 aces in a standard deck of 52 cards, so the maximum number of aces in a 5-card poker hand is 3.
2. There are C(4,3) = 4 ways to choose 3 aces out of the 4 aces in the deck.
3. For the remaining 2 cards, there are C(48,2) = 1128 ways to choose them from the 48 non-ace cards.
4. Therefore, there are 4 x 1128 = 4512 possible 5 card poker hands with at least 3 aces that can be dealt from a standard deck of 52 cards.
There are 4 aces in a standard deck of 52 cards, so the maximum number of aces in a 5-card poker hand is 3. There are C(4,3) = 4 ways to choose 3 aces out of the 4 aces in the deck. For the remaining 2 cards, there are C(48,2) = 1128 ways to choose them from the 48 non-ace cards.
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I need the answer plssssss
Answer:
12 inches
Step-by-step explanation:
21/3=7
84/7=12
12 inches
what if 8 crayons cost $11.50 what would one crayon cost lol.
Answer:
$1.44Step-by-step explanation:
Simply divide 11.5 by 8
8 goes into 11 1 time with 3 left over.
8 goes into 35 4 times with 3 left over.
8 goes into 30 3 times with 6 left over.
8 goes into 60 7 times with 4 left over.
8 goes into 40 5 times.
1.4375
Answer $1.44 a CrayonDetermine whether the graph represents a proportional relationship. (4 points) A graph is shown. The x-axis is labeled from 0 to 9. The y-axis is labeled from 0 to 17. Four points are shown on the graph on ordered pairs 0, 4 and 2, 8 and 3, 12 and 4, 16. These points are joined by a line. The label on the x-axis is Number of boats. The title on the y-axis is Number of passengers. a Yes, it is a proportional relationship because the graph goes through the origin b No, it is not a proportional relationship because the graph does not go through the origin c Yes, it is a proportional relationship because the graph is a straight line d No, it is not a proportional relationship because the graph is not a straight line
Answer:
c Yes, it is a proportional relationship because the graph is a straight line (and passes the vertical line test)
Step-by-step explanation:
Answer:
b ( No, it is not a proportional relationship because the graph does not go through the origin )
Step-by-step explanation:
Because it does not start at 0,0
convert the rate of $480/day to the equialent rate in dollars/hour.
Answer:
It would be $20 per each hour
Step-by-step explanation:
Divide 480 by 24 .
Answer:
$20/ hour
Step-by-step explanation:
24 hours in a dayDivide $480/ 25
3. Validity. Explain the difference between internal validity and external validity in your own words.
a. Explain why they are often considered at odds with one another in an experiment.
b. If you were studying the impacts of distractions on driving errors explain what you might do to ensure high internal validity in the experiment.
c. What could you do to increase the external validity of this experiment?
4. Reliability. You are developing a new survey to assess personality. Give three examples of ways to test the reliability of your survey.
Internal validity refers to the degree to which a study is conducted without any systematic errors, such that the findings are entirely accurate for the variables in the study. It assesses the degree to which the causal variable caused the effect variable.
External validity, on the other hand, refers to the extent to which the findings may be generalizable beyond the study context. It assesses the degree to which the findings can be extended to different populations, settings, and times. These concepts are frequently at odds with one another in research since one may have to choose between internal validity and external validity when designing a study.
If the study is designed to enhance internal validity, it may not be able to generalise the results beyond the study context, reducing external validity. If the study is designed to maximise external validity, it may increase the possibility of outside factors interfering with the dependent variable, lowering internal validity.
A strong method to ensure internal validity in an experiment looking at the effects of distractions on driving errors would be to use random assignment to allocate individuals to the experimental and control groups. Participants could then be provided with identical stimuli in both groups, except for the distraction, to prevent biases from creeping in.
Finally, all of the factors that are not part of the treatment, such as the location or the lighting, must be controlled for.
To improve the external validity of an experiment investigating the effects of distractions on driving errors, the study could be conducted in a naturalistic setting, where driving occurs outside of the laboratory. If possible, the study should use a diverse sample of participants in terms of age, gender, and driving experience.
The research could also be conducted in different settings, including urban and rural areas, to provide a more comprehensive understanding of the impact of distractions on driving errors.Reliable surveys are crucial in obtaining accurate results in a study. Here are three examples of how the reliability of a survey can be tested:
Test-retest: The reliability of the questionnaire can be assessed by conducting it twice, with a reasonable time interval between the two assessments.
Internal Consistency: The Cronbach's alpha coefficient can be computed to evaluate the consistency of the items in a scale.
Split-half: The reliability of the questionnaire can be assessed by splitting it into two separate halves and comparing the scores obtained from both halves.
Internal validity is the degree to which a study is conducted without any systematic errors, such that the findings are entirely accurate for the variables in the study, while external validity is the extent to which the findings may be generalizable beyond the study context. In an experiment, internal validity and external validity are often at odds with one another, making it difficult to design a study that considers both.
To ensure high internal validity in an experiment investigating the effects of distractions on driving errors, random assignment, a controlled setting, and identical stimuli can be used. Finally, to improve the external validity of the experiment, it can be conducted in a naturalistic setting with a diverse sample of participants. Finally, three ways to test the reliability of a survey include test-retest, internal consistency, and split-half methods.
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how to simplify this rational expression \(\frac{18d^{2} }{4d+8}\)
Answer:
9d^2/(2d + 4).
Step-by-step explanation:
18d^2 / (4d + 8)
First factorise the denominator:
= 18d^2 / 4(d + 2)
The GCF of 18 and 4 is 2 so this simplifies to:
9d^2/2(d + 2)
= 9d^2/(2d+ 4).
(3/x+8/z)/(6/x-2/z)
find the ordinary generating function for the number of ternary sequences in which any occurrence of 2 has a 1 both immediately before and immediately after it
To find the OGF for the number of ternary sequences in which any occurrence of 2 has a 1 both immediately before and immediately after it, we can use a recursive approach.
Let A(x) be the OGF for sequences that start with a 1 and end with a 1. And let B(x) be the OGF for sequences that start with a 1, contain a 2, and end with a 1.
We have A(x) = x + \(x^{2}\) + \(x^{3}\) + \(x^{4}\) + ...
And B(x) = x * \(A(x)^{2}\), since a 2 can only appear after a 1 and must be immediately followed by another 1.
Finally, the OGF for the desired sequence is B(x) = x * x + \(x^{2}\) + \(x^{3}\) + \(x^{4}\) + ...)^2 = x * \(A(x)^{2}\)
So, the OGF for the number of ternary sequences in which any occurrence of 2 has a 1 both immediately before and immediately after it is x * ( x + \(x^{2}\) + \(x^{3}\)......)^2.
The ordinary generating function (OGF) for a sequence is a formal power series that encodes information about the sequence.
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Write sin 36° in terms of cosine.
Evaluate the integral of 4 raised to the power of 3 times x, dx
We have to evaluate the integral:
\(\int4^{3x}dx\)We start with a substitution:
\(\begin{gathered} u=3x \\ \frac{du}{dx}=3\Rightarrow dx=\frac{du}{3} \end{gathered}\)Then, we can now apply the substitution and then the rule for exponential functions:
\(\int4^{3x}dx=\int4^u\frac{du}{3}=\frac{1}{3}\int4^udu\)\(\frac{1}{3}\int4^udu=\frac{1}{3}\cdot\frac{4^u}{\ln(4)}+C\)We can replace back with x and write:
\(\frac{4^u}{3\ln(4)}=\frac{4^{3x}}{3\ln(4)}\)Then, the solution to the integral is:
\(\int4^{3x}dx=\frac{4^{3x}}{3\ln(4)}+C\)This result does not match any of the options.
Answer: none of these.
5.1-20. The formula for the line passing through (2,4,3) and (4,2,4) in Fig. 5.2 can be written as (2,4,3)+α[(4,2,4)−(2,4,3)]=(2,4,3)+α(2,−2,1), where 0≤α≤1 for just the line segment between these points. After augmenting with the slack variables x 4,x 5,x 6,x 7 for the respective functional constraints, this formula becomes (2,4,3,2,0,0,0)+α(2,−2,1,−2,2,0,0). Use this formula directly to answer each of the following questions, and thereby relate the algebra and geometry of the simplex method as it goes through one iteration in moving from (2,4,3) to (4,2,4). (You are given the information that it is moving along this line segment.) (a) What is the entering basic variable? (b) What is the leaving basic variable? (c) What is the new BF solution?
The entering basic value is α and the leaving basic variable is x2.
Given that the formula for the line passing through the points (2, 4, 3) and (4, 2, 4) can be written as (2,4,3)+α[(4,2,4)−(2,4,3)] = (2,4,3)+α(2,−2,1), where 0 ≤ α ≤ 1 for just the line segment between these points. After augmenting with the slack variables x4, x5, x6, x7 for the respective functional constraints, this formula becomes (2,4,3,2,0,0,0) + α(2,−2,1,−2,2,0,0).We have to use this formula directly to answer each of the following questions and relate the algebra and geometry of the simplex method as it goes through one iteration in moving from (2,4,3) to (4,2,4). The questions are:(a) What is the entering basic variable?The entering basic variable is the variable that increases in the formula which in this case is α.(b) What is the leaving basic variable?The leaving basic variable is the variable that makes one of the original basic variables zero and takes its place as a basic variable in the new basic feasible solution. Here, the leaving basic variable is x2.(c) What is the new BF solution?The new basic feasible solution is found by replacing the entering basic variable α for the leaving basic variable x2 and then using Gaussian elimination to solve the linear system. Here is how it is done:At α = 0, we have the point (2,4,3,2,0,0,0).At α = 1, we have the point (4,2,4,0,2,0,0).Let α be the entering basic variable, then we can take x2 to leave the basis. Thus, at α = 0, we have (2,4,3,2,0,0,0) as the BFS and at α = 1, we have (4,2,4,0,2,0,0) as the next BFS.Then we need to use Gaussian elimination to solve the linear system. After Gaussian elimination, we get the new basic feasible solution as (10/3,4/3,0,0,2/3,0,0).Hence, the new BF solution is (10/3,4/3,0,0,2/3,0,0).Thus, the entering basic variable is α, the leaving basic variable is x2, and the new BF solution is (10/3,4/3,0,0,2/3,0,0).
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need help asap A gym charges $252 a year for a gym membership. Bradley's membership fee is a constant amount each month. Which equation represents the amount he pays in m months if c represents the total amount he paid
A constant is something that doesn't change overtime; a steady flow that has a fixed value in a given situation.
First, we would need to see how much the gym charges each month for a membership, based on the amount he pays every year.
If we know that a year has 12 months, and every year he pays $252, we can use an equation that looks like this:
252 ÷ 12 = 21
The gym charges $21 every month for a membership.
Given, if m = months, and c = total amount he paid, the equation would look like this:
21 × m = c
Therefore, an equation you can use to figure out how much he pays in (m) months is 21 × m = c.
If the length of the shorter arc AB is 22cm and C is the center of the circle then the circumference of the circle
is:
Answer:
22= 2(pi)(r)(45/360)
28.01
C=176
Step-by-step explanation:
i really really really need help with this one two
Answer:
-2x+24
Step-by-step explanation:
Distribute the -3 into 2x and -8, which gives you -6x+24+4xAdd like terms, which gives you -2x+24, since -6x and 4x are like termsSolved! -2x+24Store A sells a watch for $50 and offers a 5% discount. Store B sells the same watch for $60 and offers a 20% discount. The sales tax is 6% for both . After discounts and taxes are applied, from which store should you buy the watch and why?
Translate the phrase into a numerical expression. One hundred devided by the quantity three times five
PLEASE HURRY
Answer:
\( \dfrac{100}{3 \times 5} \)
Step-by-step explanation:
\( \dfrac{100}{3 \times 5} \)
The times taken by Amal to run three races were 3 minutes 10 seconds, 2 minutes 58.2 seconds and 3 minutes 9.8 seconds. Find the average time taken, giving your answer in minutes.
which rate is equivalent to 8 liters per minute
It's 2 gal/min
8 liters is 2.1134 gallons, so its the closest to the the first option than the others.
In residual analysis, there is generally not a problem if the residuals are arranged in a linear or curvilinear pattern.
True
False
False. Residual analysis is an important step in the evaluation of a statistical model. It involves examining the residuals, which are the differences between the observed values and the predicted values of the response variable, to assess the adequacy of the model.
A residual plot is a graphical display of the residuals against the predicted values, and can be used to identify patterns or trends in the data that may suggest that the model is not capturing all the relevant factors that contribute to the outcome being modeled.
In general, a linear or curvilinear pattern in the residual plot indicates that there is still some systematic variation in the data that has not been accounted for by the model. This suggests that the model may not be adequately capturing all the relevant variations in the data, and that additional variables or predictors may need to be included in the model to improve its performance.
On the other hand, a random scatter of residuals around zero indicates that the model captures all the relevant variations in the data, and thus the model can be considered adequate. In this case, no further modifications to the model may be necessary.
Therefore, it is important to carefully examine residual plots when evaluating a statistical model. Any patterns or trends in the residuals should be investigated further, and appropriate steps taken to address any issues that are identified. By doing so, we can ensure that our models are accurate and reliable, and that they provide useful insights into the phenomena being studied.
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Let θ be an acute angle such that sinθ= \frac{sqrt[35]{2} and tanθ<0. Find the value of cotθ.
The value of cotθ. this means there is no acute angle θ that satisfies the given conditions. Hence, there is no value for cotθ.
To find the value of cotθ, we can use the relationship between cotangent (cot) and tangent (tan):
cotθ = 1/tanθ
Given that tanθ < 0, we know that the angle θ lies in either the second or fourth quadrant, where the tangent is negative.
We are also given that sinθ = √(35)/2. Using the Pythagorean identity sin^2θ + cos^2θ = 1, we can find the value of cosθ:
sin^2θ + cos^2θ = 1
(√(35)/2)^2 + cos^2θ = 1
35/4 + cos^2θ = 1
cos^2θ = 1 - 35/4
cos^2θ = 4/4 - 35/4
cos^2θ = -31/4
Since cosθ cannot be negative for an acute angle, this means there is no acute angle θ that satisfies the given conditions. Hence, there is no value for cotθ.
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What is the surface area of a cereal box with a height of 10 inches, a width of 4 ½ inches, and a length of 7 inches?
Answer:
Surface area of a box = 293 inches ²
Step-by-step explanation:
Surface area of a box = 2(lw + lh + hw)
Where,
l = length = 7 inches
w =width = 4 1/2 inches
h = height = 10 inches
Surface area of a box = 2(lw + lh + hw)
= 2(7*4.5 + 7*10 + 10*4.5)
= 2(31.5 + 70 + 45)
= 2(146.5)
= 293 inches ²
Surface area of a box = 293 inches ²
1 point
Frank spent 18 dollars at Wawa, now he has no money left. How much did
he start with? *
36
24
0
18
which of the following best represents the average rate of change for the table below ?
which statement is true about this equation
The equation represents a linear function.
What is quadratic equation?
A quadratic equation is a polynomial equation of degree two which can be written in the form: ax² + bx + c = 0, where x is the variable and a, b, and c are constants with 'a' not equal to 0. The term 'quadratic' comes from the Latin word 'quadratus', which means 'square'.
The equation given in the image is a quadratic equation in standard form, which means it is written in the form ax^2 + bx + c = 0, where a, b, and c are constants and x is the variable.
To determine which statement is true about this equation, we need to analyze its discriminant, which is given by the expression b^2 - 4ac. The discriminant tells us about the nature of the solutions of the quadratic equation.
If the discriminant is positive, then the equation has two distinct real roots.
If the discriminant is zero, then the equation has one real root (also known as a double root).
If the discriminant is negative, then the equation has two complex roots (conjugate pairs).
In the given equation, a = 3, b = -4, and c = 1. Substituting these values into the discriminant formula, we get:
b^2 - 4ac = (-4)^2 - 4(3)(1) = 16 - 12 = 4
Since the discriminant is positive, we know that the quadratic equation has two distinct real roots. Therefore, statement (A) is true.
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