The range of horn lengths for the middle 95% of Texas Longhorn cattle is (51 inches, 69 inches)
What is a normal distribution?
A continuous probability distribution for a real-valued random variable is called a normal distribution or a Gaussian distribution.
Here, we have
Given:
Horn lengths of texas longhorn cattle are normally distributed
The mean horn spread: μ = 60 inches
With a standard deviation: σ = 4.5 inches
According to the normal distribution, the range for the middle 95% of the values is: (μ - 2σ, μ + 2σ)
Replacing the given values:
(60 inches - 2(4.5 inches), 60 inches + 2(4.5 inches))
(60 inches - 9 inches, 60 inches + 9 inches)
(51 inches, 69 inches)
Hence, the range of horn lengths for the middle 95% of Texas Longhorn cattle is (51 inches, 69 inches)
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There are 5 positions available in the new school. Of the applicant, 12 are men and 8 are women. In how many ways can 3 men and 2 women be chosen if they are equally considered?
There are 3080 ways 3 men and 2 women can be chosen if they are equally considered, using the multiplication principle of counting
What is the multiplication principle of countingThe multiplication principle states that if there are m ways to perform one task and n ways to perform another task, then there are m x n ways to perform both tasks together.
To find the number of ways to choose 3 men from the 12 men, we can use the formula for combination, which is: ⁿCᵣ = n! / (r! (n-r)!).
where n is the total number of men and r is the number of men chosen
so, the number of ways to choose 3 men from the 12 men = ¹²C₃ = 1.
Similarly, we evaluate the number of ways to choose 2 women from the 8 women
as = ⁸C₂ = 14
Now, using the multiplication principle, we can find the total number of ways 3 men and 2 women be chosen if they are equally considered.
220 x 14 = 3080
Therefore, there are 3080 ways 3 men and 2 women can be chosen if they are equally considered, using the multiplication principle of counting
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Use the method of cylindrical shells to find the volume generated by rotating the region bounded by the given curves about the y-axis. y = √x y = 0, x = 9
The answer is, the volume generated by rotating the region bounded by the given curves about the y-axis is 81π cubic units using the method of cylindrical shells.
To find the volume generated by rotating the region bounded by the curves y = √x, y = 0, and x = 9 about the y-axis using the method of cylindrical shells, follow these steps:
1. Identify the given functions and bounds: f(y) = y^2, g(y) = 9, and y = 0 to y = 3 (since √9 = 3).
2. Set up the integral for the volume using cylindrical shells. The volume formula is V = 2π ∫[a, b] (y * (g(y) - f(y)) dy, where a and b are the bounds for y.
3. Plug in the functions and bounds into the integral: V = 2π ∫[0, 3] (y * (9 - y^2) dy).
4. Integrate the function with respect to y: V = 2π [4.5y^2 - (1/4)y^4] evaluated from 0 to 3.
5. Evaluate the integral at the bounds: V = 2π [(4.5(3)^2 - (1/4)(3)^4) - (4.5(0)^2 - (1/4)(0)^4)].
6. Calculate the volume: V = 2π (40.5 - 0) = 81π.
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equation in point slope from of slope of 0.25 and point of (5,-2)
The equation is correct and the point (5,-2) is on the line.
The point slope equation of a line with slope 0.25 and a point (5,-2) would be y-(-2) = 0.25(x-5). This equation can be rearranged to y = 0.25x - 1.5.
Calculation:
y = 0.25x - 1.5
Plugging in x = 5
y = 0.25(5) - 1.5
y = -2
The point (5,-2) is on the line.
The point slope equation of a line with slope 0.25 and a point (5,-2) can be written as y-(-2) = 0.25(x-5) which can further be rearranged to y = 0.25x - 1.5. This equation can be further tested by plugging in the x value of the point (5) into the equation and the y value of the point (-2) should be obtained. This proves that the equation is correct and the point (5,-2) is on the line.
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Frozen hamburgers are sold in packages of 4 and hamburger buns are sold in packages of 6. What is the smallest number of hamburgers and buns that can be sold so the number of hamburgers equals the number of hamburger buns?
PLS ANSWER QUICK!!!!
Answer:
The least common multiple of 8 and 6
burgers: 6, 12, 18, 24
buns: 8, 16, 24
You make 24 burgers which is 4 packages
of meat patties and 3 packs of buns.
What is the cube number that equals 6
Answer:
6 Cubed
=
216
Step-by-step explanation:
6 Cubed
=
216
Answer: 6 Cubed= 216
Step-by-step explanation:
Find the maximum rate of change of f at the given point and the direction in which it occurs.
F(x, y, z) = (8x + 5y)/z
(5, 6, -1)
maximum rate of change
direction vector
The direction in which the maximum rate of change of f occurs at the point (5, 6, -1) is approximately (-0.17, -0.11, -0.98).
To find the maximum rate of change of the function f at the given point (5, 6, -1) and the direction in which it occurs, we can calculate the gradient of f at that point.
The gradient vector represents the direction of maximum increase of the function, and its magnitude represents the rate of change in that direction.
The gradient vector (∇f) of f(x, y, z) = (8x + 5y)/z can be found by taking the partial derivatives with respect to each variable:
∂f/∂x = 8/z
∂f/∂y = 5/z
∂f/∂z = -(8x + 5y)/z^2
Evaluated at the point (5, 6, -1), we have:
∂f/∂x = 8/(-1) = -8
∂f/∂y = 5/(-1) = -5
∂f/∂z = -((8(5) + 5(6))/(-1)^2) = -46
So, the gradient vector (∇f) at the point (5, 6, -1) is (-8, -5, -46).
The maximum rate of change of f at this point is given by the magnitude of the gradient vector:
|∇f| = √((-8)^2 + (-5)^2 + (-46)^2) = √(64 + 25 + 2116) = √2205 = 47.
Therefore, the maximum rate of change of f at the point (5, 6, -1) is 47.
To determine the direction in which this maximum rate of change occurs, we normalize the gradient vector by dividing it by its magnitude:
Direction vector = (∇f) / |∇f| = (-8/47, -5/47, -46/47).
Hence, the direction in which the maximum rate of change of f occurs at the point (5, 6, -1) is approximately (-0.17, -0.11, -0.98).
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The table shows the number of points scored by a basketball team in their first seven games.
Answer:
15
Step-by-step explanation:
the range is the largest number take away the smallest number
56-41=15
If Judy uses 400 chocolate chips to make x cookies, write an expression that represents the number of chocolate chips in each cookie.
Answer:
y=\(\frac{400}{x}\)
Step-by-step explanation:
Answer: 400/x (over x} = Y {amount on each cookie}
Step-by-step explanation:
What is the forecast for May using a five-month moving average?(Round answer to the nearest whole number.) Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
A. 43 B. 47 C. 52 D. 38 E. 39
The forecast for May using a five-month moving average is 39 (Option E).
Moving average is used for smoothing out time series data to find any trends or cycles within the data. A five-month moving average is the average of the past five months. To calculate the moving average, add up the sales for the previous five months and divide it by five.
According to the question, the sales for the previous five months are: Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
We have to add the sales of these five months, which gives:
27 + 40 + 42 + 41 + 47 = 197
To find the moving average for May, we divide this sum by 5:
197 / 5 = 39.4
Since we have to round the answer to the nearest whole number, we round 39.4 to 39, which is option E.
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There was a total of 640 students at a school on friday every student earthier walked or took the bus if 45% of the total number of students walked to school how many took the bus.
Answer:
55 because it will make a equal 100 percent
Step-by-step explanation:
There were 352 students who took the bus.
What is percentage?A percentage is a number that tells us how much out of 100 and can also be written as a decimal or a fraction.
Given that, There were a total of 640 students at a school on Friday every student either walked or took the bus and 45% of the total number of students walked to school
Since, 45% of them walked to the school,
Therefore, percentage of the students took the bus =
100%-45% = 55%
Now, finding the number of students took the bus,
55% of 640 = 640×55/100 = 352
Hence, There were 352 students who took the bus.
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If hector is 8 years old and Marry is 3 years old, how old will marry be when hector is 16.
A shoemaker sold a pair of for $245.99 if the buyer a $300.00 bill, how much will the buyer receive in change?
*two decimal places don't forget your $ sign. Example: $50.00 NOT 50*
Answer:
$54.01
Step-by-step explanation:
All you have to do is $300.00-$245.99 .
what is volume of cone that has a height of 6 inches, a radius of 3 inches, and a slant height of 6.7 inches
Answer:
V=56.52
Step-by-step explanation:
v=1/3(3.14)( r^2) (h)
V=1/3(3.14) (9)(6)
V=56.52
Answer:
The correct answer is 18π cubic inches
Step-by-step explanation:
I just took the test and I got the answer correct, I hope this will help you! :)
The sum and product of two linear functions are shown. Which statements can be used to describe the original functions f(x) and g(x)? Select three options. B) When multiplied, the product of the y-intercepts must be 8. C) Either f(x) or g(x) has a positive rate of change and the other has a negative rate of change. E) f(x) could have a rate of change equal to 2 and g(x) could have a rate of change of -1.
The statements that can be used to describe the original functions f(x) and g(x) are when added, the sum of the y-intercepts must be 8. The correct option is A.
Used the concept of function that states,
A function is defined as the expression that set up the relationship between the dependent variable and the independent variable.
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
It is given that sum and product of two linear functions are shown in the image which is attached with the answer below;-
The statements that can be used to describe the original functions f(x) and g(x) will be calculated as below:-
Let the functions be:-
f(x) = ax + b
g(x) = cx + d
Their sum is;
j(x) = (a + c)x + b + d
Their product is;
k(x) = (ax + b)(cx + d)
A. When added, the sum of the y-intercepts must be 8.
As We see point (0,8) of j(x) on the graph. b+d = 8
So, This is Correct.
B. When multiplied, the product of the y-intercepts must be 8.
8 is the vertex of k(x).
The vertex of \(ax^2 + bx + c\) is \(\dfrac{- b}{2a}\)
So it has no relation to the constants of the functions f(x) and g(x).
C. Either f(x) or g(x) has a positive rate of change and the other has a negative rate of change.
It refers to the value of ac.
If one of a or c has an opposite sign it makes k(x) open down but it is not as per the graph.
Hence it is incorrect.
D. f(x) could have a rate of change equal to 3 and g(x) could have a rate of change of -3.
As per the above statement, both linear equations could be positive as their sum and product are positive from the graphs of j(x) and k(x).
Hence it is false,
E. f(x) could have a rate of change equal to 2 and g(x) could have a rate of change of -1.
It should result in decreasing function of j(x) with a slope of 1 but it is increasing as per the graph.
Hence it is false.
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i need 3.234 minus 3.234 written out
A credit card is like a loan.
Select the three statements that explain why.
Answer:
The top right is the only incorrect one
Step-by-step explanation:
When money comes directly out of your bank account that is considered debit, not credit.
Please somebody help me!!!
Divide the following polynomials and then complete the quotient. Write your answer in order of decreasing powers of x.
(10x^6 + 20x^4 - 15x^2) ÷ 5x^2 = x^4 + x -2
The quotient of the polynomial 10x⁶ + 20x⁴ - 15x² by 5x² will be (2x⁴ + 4x² - 3).
What is a polynomial?A polynomial expression is an algebraic expression with variables and coefficients. Unknown variables are what they're termed. We can use addition, subtraction, and other mathematical operations. However, a variable is not divisible.
The polynomials are given below.
10x⁶ + 20x⁴ - 15x² and 5x²
The factor of the polynomial 10x⁶ + 20x⁴ - 15x² will be given as,
10x⁶ + 20x⁴ - 15x² = (5x²) · (2x⁴ + 4x² - 3)
The quotient of the polynomial 10x⁶ + 20x⁴ - 15x² by 5x² will be given as,
⇒ (10x⁶ + 20x⁴ - 15x²) ÷ (5x²)
⇒ [(5x²) · (2x⁴ + 4x² - 3)] ÷ (5x²)
⇒ (2x⁴ + 4x² - 3)
The quotient of the polynomial 10x⁶ + 20x⁴ - 15x² by 5x² will be (2x⁴ + 4x² - 3).
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Which histogram represents a set of data that is left-skewed? A graph shows the horizontal axis numbered 56 to 126. The vertical axis is numbered 1 to 5. The graph shows an upward trend from 56 to 77 then a downward trend from 77 to 119. A graph shows the horizontal axis numbered 60 to 114. The vertical axis is numbered 1 to 4. The graph shows a downward trend from 60 to 72, an upward trend from 72 to 84, then a downward trend from 84 to 108. A graph shows the horizontal axis numbered 351 to 1,287. The vertical axis is numbered 2 to 6. The graph shows an upward trend from 1 to 1,053 then a downward trend from 1,053 to 1,701. A graph shows the horizontal axis numbered 252 to 1,260. The vertical axis is numbered 1 to 5. The graph shows an upward trend from 1 to 630, a downward trend from 630 to 756, an upward trend from 756 to 882, then a downward trend from 882 to 1,341.
Left skewed histograms are shown by the left tail , smaller values, being longer then the right tail, larger values.
The answer is: A graph shows the horizontal axis numbered 351 to 1,287. The vertical axis is numbered 2 to 6. The graph shows an upward trend from 1 to 1,053 then a downward trend from 1,053 to 1,701
Answer:
A
Step-by-step explanation:
EDGE 2021
why might a repeated-measures study require half the number of subjects compared to a similar matched-subjects study with the same number of scores?
The repeated measures studies require fewer subjects than matched subjects studies with the same number of outcomes is that repeated measures designs reduce intersubject variability.
In repeated measures studies, each participant is measured multiple times under different conditions or treatments.
Whereas, In a matched-subjects study, each participant in the treatment group is compared to participants in the control group.
Intersubject variability can be large, and differences between treatment and control groups may be attributed to differences in these individual characteristics.
However, in a repeated-measures design, each participant served as its own control, reducing inter-subject variability.
This makes it easier to recognize differences in treatment conditions and can increase effect sizes.
Therefore, a repeated measures study may require fewer subjects to achieve the same statistical power as a matched subjects study with the same number of outcomes.
However, it is important to note that repeated measures designs may have their own limitations: Potential Order Effect or Practice Effect.
These limitations should be carefully considered when designing a study, and an appropriate design should be chosen based on the research question and the nature of the data.
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Five hippos fairly share 3 pumpkins. Write an expression to represent how many pumpkins each hippo receives.
Each hippo receives 0.6 pumpkins, according to an expression.
Writing a Math Expression: What Should You Do?Mathematical operators such as addition, subtraction, multiplication, and division are used to form an expression using numbers or variables. For instance, "4 added to 2" in mathematics will be expressed as 2+4.
An expression in mathematics is made up of a mixture of variables, numbers, and functions (such as addition, subtraction, multiplication or division etc.) In some ways, phrases and expressions are comparable.
3/5 = 0.6.
Each hippo receives 0.6 pumpkins, according to an expression.
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Can someone explain or tell me the answers please I am stuck! Thank u :)
Step-by-step explanation:
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator. To do this, you need to find the least common multiple (LCM) of the two denominators.
(1 point) The present value of a perpetuity paying 1 at the end of every 6 years is 0.5. Find the annual effective rate of interest i.
The annual effective rate of interest is approximately 3.218%.
To find the annual effective rate of interest, we can use the formula for the present value of a perpetuity:
PV = C / i
where PV is the present value, C is the cash flow, and i is the interest rate.
In this case, the present value (PV) is given as 0.5 and the cash flow (C) is 1, as the perpetuity pays 1 at the end of every 6 years. Plugging these values into the formula, we have:
0.5 = 1 / i
Rearranging the equation to solve for i, we get:
i = 1 / 0.5
i = 2
So the annual effective rate of interest (i) is 2.
However, since the interest is paid at the end of every 6 years, we need to convert the rate to an annual rate. We can do this by finding the equivalent annual interest rate, considering that 6 years is the period over which the cash flow is received.
To find the equivalent annual interest rate, we use the formula:
i_annual = \((1 + i)^(^1^ /^ n^)\) - 1
where i is the interest rate and n is the number of periods in one year. In this case, n is 6.
Plugging in the values, we have:
i_annual =\((1 + 2)^(^1 ^/^ 6^) - 1\)
i_annual = \((3)^(^1 ^/^ 6^) - 1\)
i_annual ≈ 0.03218
So the annual effective rate of interest (i_annual) is approximately 3.218%.
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question: given 2 patterns at 0.4 and 0.6 , estimate probability density analytically using a rectangular window of width 0.3 , using a triangular window of width 0.3 and using 1 nearest-neighbour.
The probability density of the two patterns at 0.4 and 0.6, for one nearest-neighbour is 0.6
Given two patterns at 0.4 and 0.6, the probability density of these patterns can be estimated analytically using a rectangular window of width 0.3, a triangular window of width 0.3, and one nearest-neighbour.
Probability density can be calculated using the following formula: \($p(x)=\frac{n}{aN}$\) where n is the number of samples that fall in the window centered at x, a is the window's width, and N is the total number of samples.
For the rectangular window of width 0.3, the probability density can be calculated as the sum of the two rectangular windows multiplied by 0.3, giving a probability density of 0.6.
For the triangular window of width 0.3, the probability density can be calculated as the sum of the two triangular windows multiplied by 0.3, giving a probability density of 0.45.
Finally, for one nearest-neighbour, the probability density is the maximum of the two patterns, which in this case is 0.6.
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Someone help me Solve x
Answer:
x=12Step-by-step explanation:
Hope this helpsI would explain but I have some work so sorryAnswer:
x = 12
Step-by-step explanation:
Angles and Lines
The figure attached below has been completed with the angle y to support the calculations to come.
The sum of the interior angles of a rectangle is 180°. Applying on triangle PQR:
30 + 4x + 2 + y = 180
Simplifying:
32 + 4x + y = 180
Solving for y:
y = 180 - 32 - 4x
y = 148 - 4x
Angles y and 8 + 6x are a linear pair, i.e. their sum is 180°, thus:
y + 8 + 6x = 180
Substituting y from the equation above:
148 - 4x + 8 + 6x = 180
Simplifying:
156 + 2x = 180
Dividing by 2:
78 + x = 90
Subtracting 78:
x = 90 - 78
x = 12
pleaseee helpp meeee
Answer:
9 sides
Step-by-step explanation:
Formula for finding interior angles of all polygons : 180 ( n - 2) / n = A
(n being the amount of sides it has)
This information is important so you can plug in the numbers that you already know
We know that the interior angle measures to 140 degrees
180 (n - 2) / n = 140
multiply both sides by "n"
(n - 2) x 180 = 140n
Distribute 180 to what's inside the parenthesis
180n - 360 = 140n
Subtract 140n and add 360 to each side (which just moves 360 to the other side of the "="
40n = 360
Divide 40 by both sides
n = 9
hope this helps :)
What is the area of the following composite figure? All angles are right angles. 22 m 2 29 m 2 24 m 2 27 m 2
The area of the composite figure is 24m², which is option C.
What is a composite figure?
A two-dimensional figure built up of fundamental two-dimensional shapes like triangles, rectangles, circles, semicircles, etc. is known as a composite shape or composite figure. To get the area of a composite shape, first determine the individual areas of every component. The total of the individual regions will then represent the area of the composite shape.
From the figure, we can see that from a big rectangle, 4 small identical squares of side 1m are cut from each corner.
We are asked to find the area of the rest of the rectangle which makes the composite figure.
W first find the area of the original rectangle.
Its length = 5 + 1 + 1 = 7 m
Its breadth = 2 + 1 + 1 = 4 m
So the area of the rectangle = length * breadth = 7*4 = 28 m²
Now the side length of the square = 1 m
Area of one square = 1*1 = 1m²
So are of four identical squares = 4 * 1 = 4 m²
Therefore area of the composite figure = area of big rectangle - area of 4 squares = 28 - 4 = 24m²
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Answer:
24m^2 is ur answer
Step-by-step explanation:
Hope this helps
A tank of water in the shape of a cone is being filled with water at a rate of 12 m/sec. The base radius of the tank is 26 meters, and the height of the tank is 18 meters. At what rate is the depth of
The depth of the water in the cone-shaped tank is increasing at a rate of approximately 1.385 meters per second.
To determine the rate at which the depth of the water is changing, we can use related rates. Let's denote the depth of the water as h(t), where t represents time. We are given that dh/dt (the rate of change of h with respect to time) is 12 m/sec, and we want to find dh/dt when h = 18 meters.
To solve this problem, we can use the volume formula for a cone, which is V = (1/3)πr^2h, where r is the base radius and h is the depth of the water. We can differentiate this equation with respect to time t, keeping in mind that r is a constant (since the base radius does not change).
By differentiating the volume formula with respect to t, we get dV/dt = (1/3)πr^2(dh/dt). Now we can substitute the given values: dV/dt = 12 m/sec, r = 26 meters, and h = 18 meters.
Solving for dh/dt, we have (1/3)π(26^2) (dh/dt) = 12 m/sec. Rearranging this equation and solving for dh/dt, we find that dh/dt is approximately 1.385 meters per second. Therefore, the depth of the water in the tank is increasing at a rate of about 1.385 meters per second.
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there are certain things whose number is unknown. when divided by 3, the remainder is 2; when divided by 5, the remainder is 3; when divided by 7, the remainder is 2. what will be the number of things
We have that, using the Chinese remainder theorem, the number of things is 23
How do we calculate the number of things?There are certain things whose number is unknown. When divided by 3, the remainder is 2; when divided by 5, the remainder is 3; when dividing by 7, the remainder is 2. To solve this problem, we will have to use the Chinese Remainder Theorem.
It establishes that: Let m1, m2, …, mk be coprime integers greater than 1, and let a1, a2, …, ak be any integers. So, the system of simultaneous congruences:
x ≡ a1 (mod m1)x ≡ a2 (mod m2)…x ≡ ak (mod mk)
It has a unique solution modulo M = m1m2…mk.
The Chinese Remainder Theorem implies that there is only one solution of the system of three congruences such that 0 ≤ x < 3 x 5 x 7 = 105. Using the Chinese Remainder Theorem, we obtain that x ≡ 23 (mod 105). Therefore, the number of things is 23.
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Which equation has roots of +_ 3
From the list of options the equation with roots of ±3 is: (d) (x + 0)^2 = 3^2
Which equation has roots of +_ 3The equation that has roots of ±3 is:
(x - 3)(x + 3) = 0
Expanding the left side of the equation using FOIL method, we get:
x^2 - 9 = 0
Therefore, the equation with roots of ±3 is:
x^2 - 9 = 0
Add 9 to both sides
x^2 = 9
Express 9 as 3^2
x^2 = 3^2
So, we have
(x + 0)^2 = 3^2
Therefore, the equation with roots of ±3 is: (d) (x + 0)^2 = 3^2
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Rewrite the following system of equations so that both equations are in slope-intercept form. 6x + 4y = 4
12y = -3x + 2
Answer:
ok so the answer is:
6x + 4y= 4 ---> y = -3/2x + 1
12y = -3x + 4 ---> y = -1/4x + 1/6
happy to help!