What variable do I solve for first? Do I solve for X because it’s first in the alphabet? If so, which X variable do I solve for? Do I solve for the smallest or biggest? I added a photo of the one i’m struggling with! :))
Answers
Answer:
No solution
Step-by-step explanation:
Given the simultaenous equations:
[tex]\displaystyle{\begin{cases} 3.25x - 1.5y = 1.25 \\ 13x-6y=10 \end{cases}}[/tex]
The first equation can be rewritten as:
[tex]\displaystyle{\dfrac{325}{100} x - \dfrac{15}{10}y = \dfrac{125}{100}}[/tex]
Clear the denominators by multiplying both sides with 100:
[tex]\displaystyle{\dfrac{325}{100} x \cdot 100 - \dfrac{15}{10}y \cdot 100= \dfrac{125}{100} \cdot 100}\\\\\displaystyle{325x - 150y = 125}[/tex]
The whole terms are multiple of 25, so we can simplify even lower by dividing both sides by 25:
[tex]\displaystyle{\dfrac{325x}{25} - \dfrac{150y}{25} = \dfrac{125}{25}}\\\\\displaystyle{13x-6y=5}[/tex]
So now, we have:
[tex]\displaystyle{\begin{cases}13x-6y=5\\ 13x-6y=10 \end{cases}}[/tex]
There are various ways to solve simultaenous equations but I'll use the elimination method. Multiply negative in either first or second equation but I'll choose first:
[tex]\displaystyle{\begin{cases}-13x+6y=-5\\ 13x-6y=10 \end{cases}}[/tex]
Add both equations with like terms:
[tex]\displaystyle{0=5}[/tex]
Since this equation is false. Therefore, there is no solution to the simultaenous equation.
Answer:
first you look at what you have, then develop a strategythis system has No SolutionStep-by-step explanation:
You want to know what to do first with the system of equations ...
3.25x -1.5y = 1.2513x -6y = 10StrategiesYou are taught a couple of strategies for solving systems of linear equations algebraically. The "substitution" strategy requires you use one of the equations to write an expression that can be substituted into the other equation. The purpose of this is to reduce the number of variables in the remaining equation. Usually, that means solving for one of the variables to obtain the expression to substitute.
Another strategy you are taught is the "elimination" strategy. It is also called the "addition" or "combination" strategy. It is executed by adding (or subtracting) some multiple of one of the equations from the other equation, or some multiple of it. The purpose of this is to make the coefficient of one of the variables be zero in the combined equation.
LookSubstitutionThe substitution strategy is easiest to execute if you already have one or both equations in "y=" or "x=" form. It is nearly as easy to execute if the coefficient of one of the variables is +1 or -1, or if that can be easily made to be the case. So, this is what you look for to see if the substitution strategy is an appropriate choice.
EliminationThe elimination strategy is easiest to execute if the coefficients of one of the variables are the same or opposites. If they are the same, that variable can be eliminated by subtracting one equation from the other. If they are opposites, the variable can be eliminated by adding one equation to the other. So, this relation between coefficients is one of the next things you look for when deciding what your strategy will be.
The elimination strategy can also be effectively used if the coefficients of one of the variables are a nice (integer) multiple of one another. In this problem, we notice that the coefficients of y are -1.5 and -6, which are related by a factor of 4. (It is helpful to be very familiar with multiplication facts.) As it happens, the coefficients of x have the same relation: 13 is 4 times 3.25.
Dependent/InconsistentThe fact that both sets of coefficients are related by the same factor raises a red flag regarding these equations. It means they are either dependent (have infinite solutions) or are inconsistent (have no solution).
The equations are dependent if one equation is a multiple of the other. Here, we can check that by multiplying the first equation by 4:
4 × (3.25x -1.5y) = 4 × 1.25
13x -6y = 5
We notice the other equation is ...
13x -6y = 10
Values of x and y that make 13x-6y=5 cannot also make that same sum be 10. These are called "inconsistent" equations, and they have No Solution.
Hypothetical: If the first equation were 3.25x -1.5y = 2.5, then multiplying it by 4 would give 13x -6y = 10, the same as the second equation. In this case, the equations would be called "dependent," and any of the infinite number of solutions to the first equation would also be a solution to the second equation.
PlanAfter you look at the equations to determine if any of the coefficients are 1, or have nice relations with the coefficients of the other equation, you can formulate a strategy for elimination or substitution. As we saw above, it can be useful to eliminate any fractions to start with. Sometimes, it is also useful to factor out any common factors. For example, 2x + 6y = 8 can be reduced to x +3y = 4 by factoring out 2 from every term.
Then, the variable that you solve for first will be the one that is left after you have done your substitution or elimination.
This SystemAs we saw above, the given equations can be rewritten as ...
13x -6y = 5 . . . . . . first equation multiplied by 413x -6y = 10We already know the same coefficients and different constants mean these equations are inconsistent and have No Solution. If we need further convincing we can subtract one from the other. Here, too, we can plan ahead a little bit: subtracting the first from the second will leave a positive constant:
(13x -6y) -(13x -6y) = (10) -(5)
0 = 5 . . . . . . . simplify (false)
There are no values of x and y that will make this false statement true, hence no solution.
Related Questions
What is the error of improved Euler's method?
Answers
The error of Improved Euler's Method is that it underestimates the true solution of the differential equation, leading to an inaccurate result.
Improved Euler's Method is used to approximate the solution to a differential equation. The method begins by using the initial value of the function, as well as its derivative at that point. The derivative is then multiplied by a step size, h, and added to the initial value to obtain an estimate of the function at the next point. This estimate is used to calculate the derivative at the new point, which is then multiplied by the same step size and added to the initial value to obtain the next estimate. This process is repeated until the desired solution is obtained. The error of Improved Euler's Method is that it underestimates the true solution of the differential equation, leading to an inaccurate result.
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6x^2 + x − 1
quadratic monomial
quadratic trinomial
cubic trinomial
quadratic binomial
Answers
Answer:
The expression 6x^2 + x − 1 is a quadratic trinomial.
Step-by-step explanation:
find the supplement of each of the following angles measured in radians. 2.68 is supplementary to 2.79 is supplementary to 1.79 is supplementary to 2.04 is supplementary to 0.34 is
Answers
The supplement of angles 2.68, 2.79, 1.79, 2.04, 0.34 are 1.32, 1.21, 1.21, 1.96, 2.66 radians respectively.
The supplement of an angle is defined as the difference between π radians (180 degrees) and the given angle. If the measure of an angle is "x" radians, then its supplement is calculated as π - x radians.
The supplement of an angle represents the smallest angle that when added to the original angle.
Supplement of 2.68 radians: π - 2.68 = 1.32 radians
Supplement of 2.79 radians: π - 2.79 = 1.21 radians
Supplement of 1.79 radians: π - 1.79 = 1.21 radians
Supplement of 2.04 radians: π - 2.04 = 1.96 radians
Supplement of 0.34 radians: π - 0.34 = 2.66 radians
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___________The given question is incomplete, the complete question is given below:
find the supplement of each of the following angles measured in radians: 2.68 is supplementary to_____, 2.79 is supplementary to_____, 1.79 is supplementary to_______, 2.04 is supplementary to______, 0.34 is supplementary to_______.
The pH level, P, of a liquid can be determined from the hydronium ion (H3O+) concentration, c, using the equation P = –log(c). If the pH level of orange juice is 3.5, what is the hydronium ion concentration? (2 points) 1.25 x 105 3.16 x 103 5.44 x 10–1 3.16 x 10–4
Answers
The hydronium ion concentration in orange juice with pH 3.5 is 3.16 × 10⁻⁴
What is hydronium ion concentration?The hydronium ion is an important factor when dealing with chemical reactions that occur in aqueous solutions. Its concentration relative to hydroxide is a direct measure of the pH of a solution. It can be formed when an acid is present in water or simply in pure water.
Given that, the pH level, P, of a liquid can be determined from the hydronium ion (H3O+) concentration, c, using the equation P = –log(c). we need to determine the hydronium ion concentration in orange juice with pH level of 3.5
Therefore,
P = -log(c)
P = 3.5
Therefore,
3.5 = -log(c)
log(c) = -3.5
(10)⁻³⁵/₁₀ = c
c = 0.000316227766
c = 3.16 × 10⁻⁴
Hence, the hydronium ion concentration in orange juice with pH 3.5 is 3.16 × 10⁻⁴
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Here's a box plot that summarizes the number of history questions on Ms. Jones's homework
assignments.
–
|||||||||
+H
024 6 8 10 12 14 16 18 20
Number of questions
Find the median of the data.
questions
Answers
Answer:
I will tell you the answer
Step-by-step explanation:
Answer:
the median is 11 questions.
Step-by-step explanation:
khan academy :)
The plant manager of a company that makes pillows claims that only 8 percent of the pillows made have a stitching defect. The quality control director thought that the percent might be different from 8 percent and selected a random sample of pillows to test. The director tested the hypotheses H : p=0.08 versus Hp +0.08 at the significance level of a = 0.05. The p- value of the test was 0.03. Assuming all conditions for inference were met, which of the following is the correct conclusion? The p-value is less than a, and the null hypothesis is rejected. There is convincing evidence to suggest the true proportion of stitching defects is less than 0.08. Subm B The p-value is less than a, and the null hypothesis is rejected. There is convincing evidence to suggest the true proportion of stitching defects is not 0.08. The p-value is less than o, and the null hypothesis is rejected. There is convincing evidence to suggest the true proportion of stitching defects is greater than 0.08 The p-value is less than , and the null hypothesis is not rejected. There is convincing evidence to suggest the true proportion of stitching defects is not 008 The p-value is less than a, and the null hypothesis is not rejected. There is not convincing evidence to suggest the true proportion of stitching defects is not 0.08
Answers
The correct statement regarding the test of the hypothesis is given as follows:
B. The p-value is less than the significance level, and the null hypothesis is rejected. There is convincing evidence to suggest the true proportion of stitching defects is not 0.08.
What is the relation between the p-value and the conclusion of the test hypothesis?Depends on if the p-value is less or more than the significance level:
If it is more, the null hypothesis is not rejected, meaning that the research study is not statistically significant.If it is less, it is rejected, meaning that the research study is statistically significant.
The parameters for this problem are given as follows:
Hence the null hypothesis is rejected, as 0.03 < 0.05, and the conclusion is that the proportion is different of 0.08, which is the test made for this problem.
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Tamara is painting a rectangular picture that is 6 inches wide by 4 3/4 inches long. What is the area of the picture
Answers
Now we can find the area:
Area = length x width
Area = (19/4) x 6
Area = 114/4
Area = 28.5
Therefore, the area of the picture is 28.5 square inches.
What does the mathematical concept of "area" mean?The area of a planar figure is the region that its perimeter includes. The quantity of unit squares that completely encircle the surface of a closed figure is its area. Square units like cm2 and m2 are used to measure area.
The area of a rectangle is found by multiplying its length by its width. In this case, the width is 6 inches and the length is 4 3/4 inches. We can convert the length to an improper fraction to make it easier to multiply:
4 3/4 = 19/4
Now we can find the area:
Area = length x width
Area = (19/4) x 6
Area = 114/4
Area = 28.5
Therefore, the area of the picture is 28.5 square inches.
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The area of the rectangular picture painted by Tamara is 28.5 in.²
What is a rectangle?
The internal angles of a rectangle, which has four sides, are all precisely 90 degrees. The two sides come together at a straight angle at each corner or vertex. The rectangle differs from a square because its two opposite sides are of equal length. Rectangles are flat, two-dimensional shapes. The diagonals of the rectangle's symmetrical shape are of equal length. The rectangle will be split into two right-angle triangles by a diagonal.
The region covered by a two-dimensional plane is known as its area. It has a square unit of measurement. As a result, the rectangle's area is the space enclosed by its exterior lines. It is the same as the length times the width calculation.
Given,
The width of the rectangular picture = 6 inches
The length of the rectangular picture = 4 3/4 inches = 19/4 inches
The area of the picture = Area of the rectangle = Length * breadth
= 19/4 * 6 = 57/2 = 28.5 in.²
Therefore the area of the rectangular picture painted by Tamara is
28.5 in.²
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Given ab 12 ac 6 prove c is the midpoint
Answers
Answer:
yes
Step-by-step explanation:
Given ab 12 ac 6 prove c is the midpoint is true because the midpoint of 12 is 6.
Solve for t.
1/3 • t = 3
t =
Write your answer as a fraction or as a whole or mixed number.
Submit
Answers
Answer:
t = 9
Step-by-step explanation:
We know that 1/3 of t is 3, so to find t, we have to multiply 3 x 3 because we want to find 3/3 or 1 of t. When we multiply 3 x 3, we get t = 9
OR
We could also solve it like this-
1/3 × t = 3
1/3 goes to the other side so it becomes: [tex]t = \frac{3}{1/3} \\[/tex]
Then, it become multiplication so: [tex]t = 3 * 3/1[/tex]
So t is 9
Hope this helps!
Please help, solve this
Answers
The value of f( -10 ) in the piecewise function is 150.
What is the value of f( -10 )?A piecewise function is simply a function which has different definitions of values for different intervals.
Given the piecewise function;
t² - 5t; t ≤ -10
f(t) = { t + 19; -10 < t < -2
t³/( t + 9 ); t ≥ -2
To solve for f( -10 ), we check the interval where -10 falls into.
Since -10 is less than or equal to -10, it falls in the interval of t ≤ -10.
Hence;
f(t) = t² - 5t
Replace t with -10 and simplify.
f( -10 ) = ( -10 )² - 5( -10 )
f( -10 ) = 100 + 50
f( -10 ) = 150
Therefore, the value of f( -10 ) is 150.
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benedictine brewery (mount angel abbey, oregon) has two bottling machines. machine a fills 75% of the bottles. given that the bottles are filled by machine a, 10% are defective. given that the bottles are not filled by machine a (that is, machine ac), 5% are defective. using the theorem of bayes, determine the probability that a randomly sampled bottle was filled by machine a, given that it is defective.
Answers
The probability that Machine A filled a randomly selected bottle, given that it is defective, is 2/3 or approximately 0.67.
Let's define the subsequent events:
A: Machine A filled the bottle.
A': The bottle wasn't mechanically filled A (i.e. filled by machine AC).
D: the bottle is defective.
The chance that a randomly selected bottle was filled by machine A, assuming that it is broken, is known as P(A|D). The Bayes theorem provides us with:
P(A|D) = P(D|A)P(A) / P(D)
The following three terms on the right-hand side must be calculated:
P(D|A): the probability that a bottle is flawed given that machine A filled it. 10% of the bottles filled by machine A are reported to be faulty. so P(D|A) = 0.1.
P(A): the previous probability that machine A filled a bottle. There are just two machines, both of which fill bottles., P(A) = P(A') = 0.5.
P(D): the slight possibility that a bottle is flawed. The law of total probability can be used to calculate this:
P(D) = P(D|A)P(A) + P(D|A')P(A') = 0.1 x 0.5 + 0.05 x 0.5 = 0.075
Now we can plug in the values:
P(A|D) = 0.1 x 0.5 / 0.075 = 2/3
Therefore, the probability that Machine A filled a randomly selected bottle, given that it is defective, is 2/3 or approximately 0.67.
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The vertex from of a function is g(x)=(x-3)2+9 how does the graph of g(c) compare to the graph of the function f(x)=x2
Answers
The function g(x) is a quadratic function in vertex form. Its vertex is at (3, 9), and it opens upwards because the coefficient of the squared term is positive.
The function f(x) is also a quadratic function, but in standard form. It opens upwards because the coefficient of the squared term is positive.
Since both functions have a minimum value at the vertex, the graphs of g(x) and f(x) will be similar in shape. However, the vertex of f(x) is at (0,0), so it is shifted to the left of g(x). Also, the y-intercept of f(x) is (0,0), while the y-intercept of g(x) is (0,18).
In summary, the graph of g(x) is the graph of f(x) shifted 3 units to the right and 9 units up.
Juan earned 166 points on a school assignment. Because the assignment was turned in late, the score was reduced to 163 points. What was the percentage decrease in the score? Round your answer
to the nearest tenth.
Answers
The percentage decrease in the score is 1.8%
How to calculate the percentage decrease in the score?
Juan earned 166 points on a school assignment
The assignment was turned in late which made the score to be reduced to 163 point
The first step is to calculate the decrease
= 166-163
= 3
The percentage decrease is
3/166 × 100
= 0.0180 × 100
= 1.8
Hence the percentage decrease in the score is 1.8%
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What is the area of this figure?
9 km
7 km
3 km
5 km
4 km
2 km
13 km
3 km
Answers
The area of the composite figure is 203 square km
How to determine the area of the figureThe complete question is added as an attachment
From the question, we have the following parameters that can be used in our computation:
Area of the figure = Sum of the areas of the individual shapes
Using the above as a guide, we have the following:
Area of the figure = 3 * 4 + 12 * 6 + 17 * 7
Evaluate the expression
Area of the figure = 203
Hence, the area is 203 square km
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what is accounting and how to maintain our business accounting?
Answers
Answer:
accounting is a systematic and detailed recording of all the financial transactions that further help owners, investors, suppliers, etc. in making the right business decision.
Step-by-step explanation:
One option in a roulette game is to bet $15 on red. (There are 18 red compartments, 18 black compartments, and two compartments that are neither red nor black.) If the ball lands on red, you get to keep the $15 you paid to play the game and you are awarded $15. If the ball lands elsewhere, you are awarded nothing and the $15 that you bet is collected. What is the expected value for playing roulette if you bet $15 on red?
Answers
The expected value for playing roulette if you bet $15 on red is $6.32
What is probability?Probability is the study of the chances of occurrence of a result, which are obtained by the ratio between favorable cases and possible cases.
The expected value for playing roulette if you bet $15 on red can be calculated as follows:
There are 18 red compartments out of a total of 38 compartments (18 red + 18 black + 2 neither red nor black).
Therefore, the probability of the ball landing on red is 18/38 or 9/19.
If the ball lands on red, you win $15 in addition to keeping your original $15 bet. So your total payout is $30.
If the ball does not land on red, you lose your $15 bet.
Using the formula for expected value, we can calculate the expected value of betting $15 on red as:
Expected value = (probability of winning * payout for winning) - (probability of losing * amount lost)
Expected value = (9/19 * $30) - (10/19 * $15)
Expected value = $270/19 - $150/19
Expected value = $120/19
Therefore, the expected value for playing roulette if you bet $15 on red is $6.32
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Find the values at the 25th and 75th percentiles for the data set
22 20 3 20 16 10 20 5 7 11 11 8 17 12 4 18 5 16 6 16
Answers
The solution is, the value at the 75th percentiles for the data set is 17.
What is percentile?In statistics, a k-th percentile is a score below which a given percentage k of scores in its frequency distribution falls or a score at or below which a given percentage falls.
here, we have,
The 75th percentile of the data is the value which is greater than 75% of the data. Arranging the values first in ascending order:
given that,
3 4 5 5 6 7 8 10 11 11 12 16 16 16 17 18 20 20 20 22
The data has 20 elements, so 75% of the data consists of .75(20) = 15.
The 75th percentile must be the 15th element.
Therefore, 17.
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Please help me with all asap I’ll mark brainly
Answers
The number of solution of each of the equations -2x + 4 = 4 - 2x, 5 - 3x = -5 - 3x and 2 + 3x = 2 + 2x are infinite solution, no solution and one solution respectively.
What is the number of solutions of each equation?Given the equations in the question;
a) -2x + 4 = 4 - 2x
b) 5 - 3x = -5 - 3x
c) 2 + 3x = 2 + 2x
To determine the number of solutions of each equation, solve for x.
a)
-2x + 4 = 4 - 2x
Solve for x
-2x + 2x + 4 - 4 = 4 - 4 - 2x + 2x
-2x + 2x = 4 - 4
0 = 0
Hence, the equation has infinite solutions.
b)
5 - 3x = -5 - 3x
Solve for x
5 - 5 - 3x + 3x = -5 - 5 - 3x + 3x
- 3x + 3x = -5 - 5
0 = -10
Hence, the equation has no solution.
c)
2 + 3x = 2 + 2x
Solve for x
2 - 2 + 3x - 2x = 2 - 2 + 2x - 2x
3x - 2x = 2 - 2
x = 0
Hence, the equation has one solution.
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A big tank had 890/ of water. A small tank had 170/ of water. When an equal amount of water was added to both tanks, the big tank had 3 times as much water as the small tank. How much water was added to each tank?
Answers
Big tank = 820
sample of size n will be selected from population with population proportion p. Which of the following must be true for the sampling distribution of the sample proportion to be approximately normal? a. Both np and n(1 P) are at least 10.b. n is greater than 30 c. p is greater than 0.5. d. The mean is equal to np e. the variance is equal to np(1-p)
Answers
True sampling distribution sample which is proportion to be approximately normal is "Both np and n(1 P) are at least 10".
For the sampling distribution of the sample proportion to be approximately normal, the sample size must be sufficiently large, and the sample proportion must be neither too small nor too large.
Specifically, the sample size multiplied by the sample proportion (np) and the sample size multiplied by one minus the sample proportion (n(1-P)) must both be at least 10. This is known as the "success-failure" condition.
Option b is not entirely accurate, as a sample size greater than 30 is a rule of thumb for the Central Limit Theorem to apply, but it is not a strict requirement for normality.
Option c is incorrect as a sample proportion greater than 0.5 means the distribution is skewed towards one end and not normal.
Option d and e are the mean and variance of the binomial distribution and are not directly related to normality.
The correct answer is option a. Both np and n(1-P) are at least 10.
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Calculate the pixel size for a fast spin echo sequence with the following parameters: FOV 30cm, TR 600, TE 10, 320 x 320 matrix, 4 NEX, 3 mm slice thickness, 3 ETL.
0.94 mm x 0.94 mm
FOV ÷ Matrix = pixel size
FOV ÷ phase matrix = phase dimension pixel
FOV ÷ frequency matrix = frequency pixel
Convert 30cm to 300 mm before calculating.
300 ÷ 320 = 0.94mm (phase dimension)
300 ÷ 320 = 0.94mm (frequency dimension)
Answers
Pixel size for fast spin echo is 0.94mm x 0.94mm. FOV 30cm, TR 600, TE 10, 320x320 matrix, 4NEX, 3mm slice thickness, 3ETL.
To calculate the pixel size, we first need to convert the FOV from 30cm to 300mm. We can then divide the FOV by the matrix size (320 x 320) to get the pixel size. This will give the same value for both the phase dimension and frequency dimension pixels. So the pixel size for the fast spin echo sequence is 0.94mm x 0.94mm.
The other parameters for the sequence are TR 600, TE 10, 4NEX, 3mm slice thickness and 3ETL. These parameters will determine the type of sequence and the overall image quality. With these parameters, the fast spin echo sequence should produce a high quality image with good resolution.
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Consider a bowler in a league who keeps track of individual games, as well as average scores for three games played each time the league meets
Answers
Donald has a higher three-game series score.
What is Z-score?In statistics, the standard score is the number of standard deviations by which the value of a raw score is above or below the mean value of what is being observed or measured. Raw scores above the mean have positive standard scores, while those below the mean have negative standard scores.
here, we have,
Given that :
BRUCE :
score (x) = 500
League average (m) = 620
Standard deviation (σ) = 20
DONALD:
score (x) = 520
League average (m) = 625
Standard deviation (σ) = 25
Take standardized score of both Bruce and Donald
BRUCE:
Zscore = (x - m) / σ
Zscore = (500 - 620) / 20
Zscore = - 120 / 20
Zscore = - 6
DONALD:
Zscore = (x - m) / σ
Zscore = (520 - 625) / 25
Zscore = - 105 / 25
Zscore = - 4.2
Bruce's standardized score is lesser Than Donald's.
Hence, Donald has a higher three-game series score.
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The probability of guessing right on a 4-option multiple choice item is 1/4 or 0.25. If a quiz has 10 questions. Determine the mean = (exact answer, no rounding) variance = (exact answer, no rounding) standard deviation = und to one decimal place) imal place)
Answers
The probability of getting more than 5 questions right in the quiz is
0.00011445.
ProbabilityProbability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are.
the probability of guessing right on a 4-option multiple choice item is= 1/4
= 0.25
A quiz contains 10 questions.
now, the probability of getting 5 right answers as below,
Required Probability = P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10)
so, this is the probability to come right answers,
Required Probability = (1/4)^6 (3/4)^4 + (1/4)^7 (3/4)^3 + (1/4)^8 (3/4)^2 + (1/4)^9 (3/4)^1 + (1/4)^10
Required Probability = 0.000077 + 0.000025 + 0.0000086 + 0.0000029 + 0.00000095
after adding all values we get the required probability,
Required Probability = 0.00011445.
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the complete and correct question is ,
the probability of guessing right on a 4-option multiple choice item is 1/4 or 0.25. a quiz contains 10 questions. find the probability of getting more than 5 right.
which choices are equivalent to the product below? check all that apply. √6•√3
Answers
Answer:
Step-by-step explanation:
[tex]\sqrt{6} * \sqrt{3}\\ \sqrt{18}, 18=9*2, \\ \sqrt{9*2}, \\ \sqrt{9*2} = \sqrt{9} * \sqrt{2}, \sqrt{9}=3\\ 3 \sqrt{2}[/tex]
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Solution in da attachment!! :)
Illustrate with a diagram a consumer in equilibrium with indifference curves and a budget constraint. Measure units of X on the horizontal axis and units of Y on the vertical axis. Provide intuitive and mathematical explanations for what must be true in equilibrium.
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What is the slope of the budget line if the slope of the budget line equals the slope of the indifference curve when consumer equilibrium is taken into account on an indifference curve/budget line diagram
A client selects a group of items where an indifference curve is perpendicular to the price range line in order to optimize utility. The fee ratio of the two things is the same as the client's marginal charge of substitution (absolutely the cost of the slope of the indifference curve) at the utility-maximizing solution. The marginal charge of substitution is the indifference curve's slope (MRS). The MRS is the price at which a client will often trade one fact for another.
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The ages of people visiting a senior center one afternoon are recorded in the line plot.
A line plot titled Ages At Senior Center. The horizontal line is numbered in units of 5 from 60 to 115. There is one dot above 80 and 100. There are two dots above 70 and 85. There are three dots above 75.
Does the data contain an outlier? If so, explain its meaning in this situation.
No, there is no outlier. This means that the people were all the same age.
No, there is no outlier. This means that the people are all around the mean age.
Yes, there is an outlier at 100. This means that one person's age was 100, which is 15 years older than the next closest age.
Yes, there is an outlier of 100. This means that the average person at the center is 100 years old.
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No, there is no outlier. this means that the people are all the same age
No, there isn't an outlier. This indicates that everyone is roughly the same age.
What is an Outlier?
An outlier in a data graph or dataset you're dealing with is a data point that is disproportionately high or low compared to the closest data point and the rest of the nearby coexisting values.
Extreme values that significantly deviate from the dataset for graph's normal distribution are known as outliers.
How to Spot the Outlier?
Data points in a dataset must be fewer than Q1 - 1.5xIQR in order to qualify as low outliers.
As a result, a data point cannot be regarded as a low outlier unless it falls below the first quartile by more than 1.5 times the interquartile range.
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Refer to Example 2.7. Suppose that we record the birthday for each of n randomly selected persons.
a) Give an expression for the probability that none share the same birthday.
b) What is the smallest value of n so that the probability is at least .5 that at least two people share a birthday?
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The distribution used to obtain the critical value in this situation is the Student's t-distribution.
What is critical value?Critical value is a statistical value used to determine whether a hypothesis test result is statistically significant or not. It is the value that is compared to the test statistic to determine whether the null hypothesis should be rejected or not. The critical value is determined by the level of significance chosen for the study, the sampling distribution of the test statistic, and the degrees of freedom.
The Student's t-distribution is a symmetric probability distribution that is used when the population standard deviation is unknown. It is used in situations where there is a small sample size (less than 30) and the sample is drawn from a normally distributed population. In this case, the owner is interested in developing a 90% confidence interval estimate, so the critical value will be obtained from the Student's t-distribution.
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a distribution table for the scores on an exam is shown below. the second row says that 10% of the students scored between 60 and 70. fill in the blanks in the height column. do not include units.
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The median for the distribution table is falls within the range of 60-70 points.
Understanding the concept of median is crucial in analyzing data and making statistical inferences.
From the given distribution table, we can see that the percentage of students scoring between 0-60 points is 15%, between 60-70 points is 10%, between 70-80 points is 25%, between 80-90 points is 30%, and between 90-100 points is 20%. To calculate the cumulative percentage, we can add up the percentages from left to right.
For instance, the cumulative percentage of students scoring between 0-70 points is
=> 15% + 10% = 25%.
Similarly, the cumulative percentage of students scoring between 0-80 points is
=> 15% + 10% + 25% = 50%.
We can repeat this process to find the cumulative percentage for each score range.
Once we have the cumulative percentages, we can find the median score. In this case, since the total percentage is 100%, the median score would be the point at which the cumulative percentage reaches 50%. We can use the height column to calculate this value.
Starting from the lowest score range, we can add the heights until the cumulative percentage exceeds 50%. The point where this happens is the median score.
Moving on to the next score range, the cumulative percentage for scores between 0-70 points is 25%, which is greater than 50%. Therefore, the median score falls within the range of 60-70 points.
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Complete Question:
A distribution table for the scores on an exam is shown below. The second row says that 10% of the students scored between 60 and 70. Fill in the blanks in the height column. Do not include units.
Points (Width) % 0-60 60-70 70-80 80-90 90-100
(Area) Height=Area/Width (% per point) 15 10 25 30 20
What is the median score?
calculating area and circumference or perimeter of a 2d shape. use your measurements to calculate the area and circumference of the circle and to calculate the area and perimeter of the rectangle.
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The area and perimeter of 2D shape of Rectangle is 6.8448cm and 11.04cm repectively. The area and perimeter of 2D shape of circle is 5.0761cm and 8.0028cm respectively.
2D shape of Rectangle with dimensions of Length is3.72 cm and Width is 1.84 cm. we can find the area of rectangle with formula Area = length x width and the formula of perimeter is Perimeter = 2(length + width).
Area = length x width = 3.72 cm x 1.84 cm = 6.8448 square cm (rounded to four decimal places)
Perimeter = 2(length + width) = 2(3.72 cm + 1.84 cm) = 11.04 cm
2D shape of Circle with dimension of diameter of 2.54 cm. we can find the area with formula Area = πr^2 and circumference with formula Circumference = 2πr
Radius = diameter / 2 = 2.54 cm / 2 = 1.27 cm
Area = πr^2 = π(1.27 cm)^2 = 5.0761 square cm (rounded to four decimal places)
Circumference = 2πr = 2π(1.27 cm) = 8.0028 cm (rounded to four decimal places)
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____The given question is incomplete, the complete question is given below:
Calculating area and circumference or perimeter of a 2D shape. Use your measurements to calculate the area and circumference of the circle and to calculate the area and perimeter of the rectangle. Rectangle Length: 3.72 cm Width: 1.84 cm Circle : 2.54 cm Diameter of circle