Answers
Answer:
the answer is C
Step-by-step explanation:
just divide 42.75 by 9
Related Questions
Using the following returns, calculate the average returns, the variances, and the standard deviations for X and Y. (Note that the book covers both the "arithmetic" and the "geometric" averages. Here, calculate the regular "arithmetic" average returns. These are the average returns covered in the course lecture. Returns Year XY 113 % 23 % 2 31 44 3 20 -10 4 -21 -24 5 22 52 Requirement 1: (a) Calculate the average return for X. (Click to select) 15.86% 14.69% 16.25% 10.53% 13.00% (b) Calculate the average return for Y. (Click to select) 20.74% 19.21% 17.00% 13.77% 21.25% Requirement 2: (a) Calculate the variance for X. (Do not round intermediate calculations.) (Click to select) 0.050313 0.032602 0.040188 0.050235 0.040250 (b) Calculate the variance for Y. (Do not round intermediate calculations.) (Click to select) 0.137500 0.089100 0.101660 0.127075 0.110000 Requirement 3: (a) Calculate the standard deviation for X. (Do not round intermediate calculations.) (Click to select) 19.95% 22.41% 20.06% 25.08% 16.25% (b) Calculate the standard deviation for Y. (Do not round intermediate calculations.) (Click to select) 41.46% 33.17% 26.86% 35.65% 31.88%
Answers
Answer:
4
Step-by-step explanation:
Requirement 1:
(a) average return for X = 33%, (b) average return for Y = 17%.
Requirement 2:
(a) variance for X = 0.050313, (b) variance for Y = 0.137500.
Requirement 3:
(a) X standard deviation = 22.41%, (b) Y standard deviation = 37.00%.
How to calculate the variance for X.Requirement 1:
(a) To calculate the average return for X, we whole up the returns and separate by the number of a long time:
Normal return for X = (113% + 31% + 20% - 21% + 22%) / 5
Normal return for X = 165% / 5
Normal return for X = 33%
(b) To calculate the average return for Y:
Normal return for Y = (23% + 44% - 10% - 24% + 52%) / 5
Normal return for Y = 85% / 5
Normal return for Y = 17%
Requirement 2:
(a) To calculate the variance for X, we have to calculate the deviations from the cruel and square them:
Deviation for each year in X = (Return - Normal return for X)
Squared Deviation for each year in X = \(Deviation^{2}\)
Fluctuation for X = Whole of Squared Deviations / (Number of a long time - 1)
variance for X = \(((113% - 33%)^{2}) + ((31% - 33%)^{2}) + ((20% - 33%)^{2}) + ((-21% - 33%)^{2}) + ((22% - 33%)^{2}) / (5 - 1))\)
Fluctuation for X = 0.050313
(b) To calculate the variance for Y utilizing the same handle:
variance for Y =\(((23% - 17%)^{2}) + ((44% - 17%)^{2}) + ((-10% - 17%)^{2}) + ((-24% - 17%)^{2}) + ((52% - 17%)^{2}) / (5 - 1))\)
Change for Y = 0.137500
Requirement 3:
(a) To calculate the standard deviation for X, we take the square root of the change for X:
The standard deviation for X = √(Variance for X)
Standard deviation for X = √(0.050313)
Standard deviation for X = 0.2241 or 22.41%
(b) To calculate the standard deviation for Y utilizing the same prepare:
The standard deviation for Y = √(Variance for Y)
Standard deviation for Y = √(0.137500)
Standard deviation for Y = 0.3700 or 37.00%
If you don't mind note that the calculations are based on the given returns and adjusting may contrast marginally depending on the strategy utilized.
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Assume that the length of Earth's equator is exactly 25,100 miles and that the Earth is a perfect sphere. The town of Lena, Wisconsin, is at $45^{\circ}$ North Latitude, exactly halfway between the equator and the North Pole. What is the number of miles in the circumference of the circle on Earth parallel to the equator and through Lena, Wisconsin
Answers
The number of miles in the circumference of the circle on Earth parallel to the equator and passing through Lena, Wisconsin, is approximately 17,747.07 miles.
To calculate the circumference of the circle on Earth parallel to the equator and passing through Lena, Wisconsin, we need to determine the length of the circle's circumference at the given latitude.
Given:
Length of the Earth's equator = 25,100 miles
Latitude of Lena, Wisconsin = 45 degrees north
The circumference of a circle at a given latitude on a perfect sphere can be calculated using the formula:
Circumference = (Cos(latitude) * Earth's equator circumference)
First, we need to convert the latitude from degrees to radians:
Latitude in radians = 45 degrees * (π / 180)
Latitude in radians = π/4
Next, we can substitute the latitude in radians into the formula to calculate the circumference:
Circumference = (Cos(π/4) * 25,100 miles)
Using the value of the cosine of π/4 (which is √2 / 2), we have:
Circumference = (√2 / 2) * 25,100 miles
Simplifying:
Circumference ≈ 0.707 * 25,100 miles
Circumference ≈ 17,747.07 miles
Therefore, the number of miles in the circumference of the circle on Earth parallel to the equator and passing through Lena, Wisconsin, is approximately 17,747.07 miles.
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In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer . Roy answered all the questions and scored 30 marks though she got 10 correct? Find the total number of sums .
Answers
Answer:
20 questions
Step-by-step explanation:
Given
\(Correct \Marks= +5\)
\(Incorrect\ Marks= -2\)
\(Score\ Obtained = 30\)
\(Number\ of\ correct\ answers = 10\)
Required
Number of questions answered
First, we need to get the total correct marks obtained by Roy
This is calculated by multiplying the correct marks by number of correct answers
\(Total = +5 * 10\)
\(Total = +50\ marks\)
Subtract this from the total scores obtained; This gives the total incorrect answer obtained by Roy
\(Incorrect = Scores\ Obtained - Total\)
\(Incorrect = 30 - (+50)\)
Open bracket
\(Incorrect = 30 - 50\)
\(Incorrect = -20\)
Divide this by -2 to get the number of incorrect answers
\(Incorrect\ Answers = \frac{-20}{-2}\)
\(Incorrect\ Answers = 10\)
Add this to the number of correct answers to give the total number of question answered
\(Total = Correct\ Answers + Incorrect\ Answers\)
\(Total = 10 + 10\)
\(Total = 20\)
Hence, Roy answered a total of 20 questions
A plane slices a double-napped cone parallel to the slanted edge of the cone. Which conic section is formed?
Circle
Ellipse
Hyperbola
Parabola
Answers
It is both of the pair of intersecting lines and degenerate hyperbola.
What is conic section?A conic section, conic or quadratic curve is a curve formed by the surface of a cone crossing a plane. The hyperbola, parabola, and ellipse are the three forms of conic sections; the circle is a special case of the ellipse, however it was frequently referred to as a fourth type. Parabolas, ellipses, circles, and hyperbolas are the four main forms of conics. Examine the diagrams below to discover how a conic is defined geometrically. The plane does not travel through the vertex of a non-degenerate conic.
Here,
It consists of a pair of intersecting lines as well as a degenerate hyperbola.
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Eileen saves dimes and quarters. She has 40 coins, which totals $6. 55, in her piggy bank. How many of each coin does she have? (x = dimes, y = quarters) Write your answer in the form (x,y), using no spaces. If your answer is a fraction, write your answer in decimal form
Answers
Using the elimination method, we can find that Eileen has 23 dimes and 17 quarters in her piggy bank.
A frequent approach for resolving a set of two-variable linear equations is the elimination method. The goal of this approach is to remove one of the variables by combining or deleting the two equations. The goal is to create a new equation with one variable removed, leaving a single variable in the equation.
Let x be the number of dimes and y be the number of quarters.
To solve for x and y, we can use the elimination method.
We can multiply equation 1 by 0.10 and subtract it from equation 2 to eliminate x:
0.10x + 0.25y = 6.55
0.10x + 0.10y = 4
0.15y = 2.55
y = 17
Substituting y = 17 into equation 1, we get:
x + 17 = 40
x = 23
Therefore, using the elimination method, Eileen has 23 dimes and 17 quarters in her piggy bank.
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Help?…. please and thanks
Answers
Answer:
(0,6) goes in x-axis
(5, -2) goes in quadrant IV
(-1, 10) goes in quadrant II
(8, 7, 2, 3) goes in quadrant I
(-¼, -6 ½) goes in quadrant III
Step-by-step explanation:
since (0,6) starts with a zero that means it says on the x-axis
(5, -2) goes into quadrant IV because the first number is positive and the second one is negative (+,-)
(-1, 10) goes into quadrant II because the first number is negative and the second number is positive (-,+)
(8, 7, 2, 3) goes into quadrant I because all the numbers are positive (+, +)
(-¼, -6 ½) goes into quadrant III because both numbers are negative (-, -)
have a good day/night!
Please help :') Estimate 15 divided by 2.57
Answers
Answer:
5.83
Step-by-step explanation:
15 ÷ 2.57 = 5.8
mark as brainllest
the answer is 5.83
hope it's help
which of the flowing states that the difference between the population parameters between two groups is zero? a. null parameter b. null hypothesis c. alternative hypothesis d. zero hypothesi.
Answers
The statement that states the difference between the population parameters between two groups is zero is referred to as the null hypothesis. Therefore, the correct answer is option b: null hypothesis.
In statistical hypothesis testing, we compare the observed data from two groups or samples to determine if there is evidence to support a difference or relationship between the populations they represent. The null hypothesis (option b) is a statement that assumes there is no difference or relationship between the population parameters being compared.
The null hypothesis is typically denoted as H0 and is the default position that we aim to test against. It asserts that any observed differences or relationships are due to chance or random variation.
On the other hand, the alternative hypothesis (option c) states that there is a difference or relationship between the population parameters. The null hypothesis is formulated as the opposite of the alternative hypothesis, assuming no difference or relationship.
Therefore, the correct answer is option b: null hypothesis.
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marvin paid an entrance fee of $5 plus an additional $1.25 per game at a local arcade. Altogether he spent $30.00.write an eutionand solve to determine how many games marvin played.
Answers
Answer:
17 just subtract 5 from 26.25 and divide 21.25 by 1.25 =17
The answer is 17
Step-by-step explanation:
Which of the following describes a situation in which the total distance a soccer player travels is 0 meter from his starting point? (5 points) Group of answer choices The player runs 0 meter forward and then runs 7 meters in the opposite direction. The player runs 7 meters forward and then runs 0 meter in the opposite direction. The player runs 3 meters forward and then runs 7 meters in the opposite direction. The player runs 7 meters forward and then runs 7 meters in the opposite direction.
Answers
Answer: The player runs 7 meters forward and then runs 7 meters in the opposite direction.
Step-by-step explanation:
"7 meters forward" = +7"7 meters backward" = -7 0William is thinking of 2 numbers. The larger number is four less than two times the smaller
number. The sum of the numbers is 104. What are William's numbers? Please write your
answer in a sentence.
Answers
Answer:
The numbers are 36 and 68.
Step-by-step explanation:
Let the smaller number be x.
"The larger number is four less than two times the smaller
number."
The larger number is
2x - 4
The sum of the numbers is x + 2x - 4, or 3x - 4.
"The sum of the numbers is 104."
3x - 4 = 104
3x = 108
x = 36
The smaller number is 36.
The larger number is 2x - 4, or
2x - 4 = 2(36) - 4 = 72 - 4 = 68
The larger number is 68.
Answer: The numbers are 36 and 68.
Find the length of side x in simplest radical form with a rational denominator.
60
х
309
2
Answers
Answer:
\(\frac{2}{3} \sqrt{3}\)
Step-by-step explanation:
We know this triangle has angles 30, 60, and 90 degrees. Triangles with these angles have a special relationship on the sides.
The side opposite to the 90 degree angle is 2 times of x.
The side opposite to the 60 degree angle is \(\sqrt{3}\) multiplied x.
We know the side opposite to 60 degree angle is 2, so x would be
\(\frac{2}{\sqrt{3}}\)
However, we can't have an irrational number in the demoninator so we multiply the fractice by root 3 over root 3:
\(\frac{2}{\sqrt{3}} * \frac{\sqrt{3}}{\sqrt{3}}\)
which gives us \(\frac{2}{3} \sqrt{3}\)
The following are the temperatures of 10 days in winter in °C. 8, 3, -1, 6, 0, 5, 2, 9, -2, 0 Work out the mean temperature
Answers
Answer:
The mean temperature is O
Step-by-step explanation:
Greg rented a truck for one day. There was a base fee of $20.99, and there was an additional charge of 71 cents for each mile driven. Greg had to pay $144.53
when he returned the truck. For how many miles did he drive the truck?
Answers
a large pile of coins consists of pennies, nickels, dimes, and quarters.if the pile contains only 20 quarters but at least 40 of each other kind of coin, how many collections of 40 coins can be chosen?
Answers
The different collections than many (40+4-1)! / (40!)(43-40)! - (20+4-1)! / (20!)(23-20)!.
Permutation and Combination:Suppose, we have n elements and we want to select r elements then the number of ways of selection may be permutation or combination. Permutation and combination depend on the order of elements. If the order of elements is not important then it is combination otherwise it is a permutation.
In this case, we are choosing r = 40 coins and among these coins, exactly 20 coins are quarters but at least 40 of each other kind of coin.
To find out exactly 20 coins of quarters, first we have to find at least 21 coins of quarters.
Because the selection of different 40 coins where at least 40 of each kind of coin. So, if we subtract the selection of at least 21 quarters .
Number of selection at least 21 quarters coins is:
So the P (n k ) = (20+4-1)! / (20!)(23-20)! subtracted from (40+4-1)! / (40!)(43-40)!
Hence the different collections than many (40+4-1)! / (40!)(43-40)! - (20+4-1)! / (20!)(23-20)!
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(b) Answer problem 82 on p.742. Create a real-world situation where you would need to find the component form of a force vector. Don't include your analysis in your post. Keep this work for later in the discussion and to respond to your classmates. (4pts) (a) Answer problem 92 on p.696. Create a real-world situation where you would need to overlay a polar coordinate system to show an original point and a second point. Don't include your analysis in your post. Keep this work for later in the discussion and to respond to your classmates. (4pts) 92. A gunner on a naval ship sights a target located 2.1mi north and 0.8mi cast of the ship's position. Choose a polar coordinate system with the gunner at the pole and the polar axis extending to the cast. Find the polar coordinates of the target. Find r to the nearest hundredth of a mile and θ in degree measure to the nearest hundredth of a degree.
Answers
1. Component form of a force vector: An engineer analyzes forces on a car's suspension system during turns. Breaking down the force vector into components ensures stability and safety.
2. Overlaying a polar coordinate system: Air traffic controllers use polar coordinates to guide aircraft during landings, accurately representing positions relative to a control tower for efficient airspace management and safety.
Let us discuss in a detailed way:
1. To find the component form of a force vector, let's consider the following real-world situation:
Imagine you are an engineer designing a suspension system for a new car model. One of the crucial design factors is ensuring the system can handle forces acting on the wheels during turns. To analyze these forces, you need to break down the resultant force acting on the wheels into its component form.
By breaking down the force vector into its components, you can determine the specific forces acting in the horizontal and vertical directions. This information is vital for calculating the stresses and strains on various suspension components, such as springs and shock absorbers, and ensuring they can handle the load.
Analyzing the component form of the force vector allows you to understand the individual forces acting on the suspension system. It helps you determine the necessary design parameters and select appropriate materials to ensure the system's stability, performance, and safety.
2. Now, let's consider a real-world situation where overlaying a polar coordinate system is useful:
Imagine you are an air traffic controller responsible for guiding aircraft during landing procedures. To efficiently direct the planes, you need to determine the positions of the aircraft relative to a specific reference point, such as the control tower.
In this situation, overlaying a polar coordinate system allows you to represent the positions of the aircraft accurately. By choosing the control tower as the pole and extending the polar axis outward, you can use polar coordinates to specify the distance and direction of each aircraft from the control tower.
This polar coordinate system enables you to quickly identify the location of each aircraft, calculate the distances between them, and provide precise instructions for landing sequences. By using polar coordinates, you can effectively manage the airspace, ensure the safety of incoming aircraft, and prevent any potential collisions.
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SNACKS The face of the popcorn box can be modeled with an isosceles trapezoid with QR=3x+2.5, RS=9x−4.8 , ST=4x−2 , and QT=6x+1.2.
Answers
Answer:
TQ=SR [since it is isosceles trapezoid]
6x+1.2=9x-48
48+1.2=9x-6x
3x=49.2
x=49.2/3=16.4
now
QR=3×16.4+2.5=51.7
SR=9×16.4-48=99.6
ST=4×16.4-2=63.6
TQ=6×16.4+1.2=99.6
As it's isosceles trapezoid
QT=RS9x-4.8=6x+1.23x=6x=2Now
QR=3(2)+2.5=8.5
RS=9(2)-4.8=13.2
ST=4(2)-2=6
QT=6(2)-1.2=10.8
Which graph represents the equation y=34x−3?
Answers
Answer:
The graph in the top right hand corner.
Hope this helps :)
Step-by-step explanation:
The formula y = mx + b
shows that m is the slope and b is the y-intercept.
m = 34
b = - 3
So to find the equation of the graph I looked at the y-intercept which is -3 and the graph in the right hand corner has a y-inyercept of -3 so that graph represents the equation y = 34x - 3
Reason:
The equation is y = (3/4)x - 3 which is in y = mx+b form
m = slope = 3/4
b = -3 = y intercept
The y intercept of -3 means the point (0,-3) is on the line. Start at this point and go up 3, then to the right 4 to arrive at (4,0) which is the x intercept. The motion "up 3, right 4" is directly from the slope 3/4
slope = rise/run = 3/4
rise = 3 = go up 3
run = 4 = go right 4
duane bought 21 3/4 inches of chain for an art project he needs chains that are 3 inch long how many 3 inch chains will he be able to use for his project
Answers
Answer:
4 15 inches of chains
Step-by-step explanation:
I need this done please
Answers
2x=118
[X=59]
y=x-28
y=59-28
[y=31]
Give a brainliest please:-)
The cheetah, which is the fastest land mammal, can accelerate from 0.0 m/s to 31 m/s in 3 seconds. What is the acceleration of the cheetah?
Answers
Answer:
10.33m/s
Step-by-step explanation:
Vfinal - Vinitial/time = acceleration
\( \frac{31 - 0}{3} \)
\( = 10.33\)
is it possible to find a whole number less than 100 that when divided by 10 has remainder 4 and when divided by 47 has remainder 17?
Answers
Yes, it is possible to find a whole number less than 100 that when divided by 10 has a remainder of 4 and when divided by 47 has a remainder of 17.
To find this number, follow these steps:
Write down the two congruences based on the given information:
a) x ≡ 4 (mod 10)
b) x ≡ 17 (mod 47)
Now, solve the congruences to find the smallest positive integer solution for x. In this case, you can use trial and error to find the smallest positive integer that satisfies both congruences. Start by testing the first congruence:
a) x = 10n + 4, where n is an integer.
Substitute this expression into the second congruence and solve for n:
b) 10n + 4 ≡ 17 (mod 47)
c) 10n ≡ 13 (mod 47)
Find the smallest positive integer for n that satisfies this congruence.
In this case, n = 5 is the smallest positive integer,
since 10(5) ≡ 13 (mod 47).
Substitute the value of n back into the expression for x:
x = 10(5) + 4 = 54
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2 1/2 pounds =. Ounces
I need help
Answers
Answer:
32 and a half
Step-by-step explanation:
Given independent events AA and BB such that P(A)=0.3P(A)=0.3 and P(B)=0.5P(B)=0.5, which of the following is a correct statement?
Answers
The correct statement is: P(A and B) <= 0.3 * 0.5 = 0.15.
The probability of A and B both occurring is denoted by P(A and B). If A and B are independent events, then the probability of both events occurring is given by the product of their individual probabilities, that is P(A and B) = P(A) * P(B). Therefore, P(A and B) = 0.3 * 0.5 = 0.15.
To understand why this statement is correct, we need to understand the concept of independence and multiplication rule of probability. When two events are independent, the occurrence of one event does not affect the occurrence of the other. In other words, the probability of one event occurring is not affected by the occurrence of the other event.
The multiplication rule of probability states that if two events A and B are independent, then the probability of both events occurring together is given by the product of their individual probabilities, that is P(A and B) = P(A) * P(B).
In this case, we are given that events A and B are independent, and their individual probabilities are P(A) = 0.3 and P(B) = 0.5. Therefore, we can calculate the probability of both events occurring together as follows:
P(A and B) = P(A) * P(B)
= 0.3 * 0.5
= 0.15
This means that the probability of both events occurring together is less than or equal to 0.15. This statement is correct because the multiplication of probabilities can never result in a probability greater than the smaller of the two individual probabilities.
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I just woke up i need help ;-;
Answers
Answer:
i think that the correct answer is 7/12
this is what truthfully struggle with can someone explain how i do this please then imma try it on my own
Answers
D.)
Good luck and I don’t know how to explain
What is the domain? I need help on this problem
Answers
The domain of the function \(f(x) = \sqrt{\frac{1}{3}x + 2\) is (d) x ≥ -6
How to determine the domain of the functionFrom the question, we have the following parameters that can be used in our computation:
\(f(x) = \sqrt{\frac{1}{3}x + 2\)
Set the radicand greater than or equal to 0
So, we have
1/3x + 2 ≥ 0
Next, we have
1/3x ≥ -2
So, we have
x ≥ -6
Hence, the domain of the function is (d) x ≥ -6
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Solve the initial value problemf’(x) = 1/x - 2x + x^1/2; f(4) = 2
Answers
SOLUTION:
Case: Initial value problem
An initial value problem is an ordinary differential equation together with an initial condition that specifies the value of the unknown function at a given point in the domain
To solve the initial value problem, we have a value of the derivative of y when x is known.
y'(x)= value
Given:
f(4)=2
\(\begin{gathered} f^{\prime}(x)=\frac{1}{x}-2x+x^{\frac{1}{2}} \\ Integrating \\ f(x)=ln(x)-\frac{2x^2}{2}+\frac{2x^{\frac{3}{2}}}{3}+C \\ f(x)=ln(x)-x^2+\frac{2x^{\frac{3}{2}}}{3}+C \\ f(4)=2 \\ f(4)=ln(4)-2(4)^2+\frac{2(2)^{\frac{3}{2}}}{3}+C \\ 2=1.386-32+1.8856+C \\ C=2-1.3863+32-1.8856 \\ C=30.7281 \end{gathered}\)The resulting equation will be:
\(f(x)=\ln x-x^2+\frac{2x^{\frac{3}{2}}}{3}+30.7281\)Final answer:
\(f(x)=\operatorname{\ln}x-x^2+\frac{2x^{\frac{3}{2}}}{3}+30.7281\)-4(10-a)/9=-4 what does a equal
Answers
a=1
Hope this helps
have a great day!
Step-by-step explanation:
The spiral in the figure is made by starting with a right triangle with both legs measuring one unit each. Then a second right triangle is built with one leg measuring one unit, and the other leg being the hypotenuse of the first triangle. A third right triangle is built on the second triangles hypotenuse again with the other leg measuring one unit, and so on.
Answers
The value of x which is hypotenuse is 4 units .
Using pythagoras theorem ,
( a ^ 2 ) + ( b ^ 2 ) = ( h ^ 2 )
where a is the base , b is a side and h is the hypotenuse of a right- angled triangle .
First triangle's hypotenuse = \(\sqrt{2}\)
Second triangle's hypotenuse = \(\sqrt{3}\)
Third triangle's hypotenuse = 2
Therefore ,
Last triangle's hypotenuse = \(\sqrt{15}\)
Hence ,
( \(\sqrt{15}\) ^ 2 ) + [ ( 1 ) ^ 2 ] = x ^ 2
15 + 1 = x ^ 2
16 = x ^ 2
x = 4
Therefore , the value of x which is hypotenuse is 4 units .
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