Listed below are the systolic blood pressures for a sample of six men aged 20-29 and for a sample of six men aged 60-69 Men aged 20-29: 117 122 129 118 131 123
Men aged 60-69: 130 153 141 125 164 139
Find the variance for each of the two sets of data then compare the variance. Round results to one decimal place.
A) Men aged 20-29: 4.8% Men aged 60-69: 10.6%
There is substantially more variation in blood pressures of the men aged 60-69.
B) Men aged 20-29: 4.6% Men aged 60-69: 10.2 %
There is substantially more variation in blood pressures of the men aged 60-69.
C) Men aged 20-29: 7.6% Men aged 60-69: 4.7%
There is more variation in blood pressures of the men aged 20 -29.
D) Men aged 20-29: 4.4% Men aged 60-69: 8.3%
There is substantially more variation in blood pressures of the men aged 60-69.

Answers

Answer 1

The obtained Z score for the following blood pressures =-2

Enter data in Excel work sheet and use the formulae

=VAR(A1:A6)  and =VAR(B1:B6)  to get the variance

Variance for

Men aged 20-29=42.97

Men aged 60-69=211.77

The variance is substantiaaly larger for the set of blood pressures of men aged 60-69

Enter the data in Excel worksheet and use =AVERAGE(A1:A15) to find mean and calculate is the mean

Mean=15833.33 and is to calculated for finding relative position

Z=38-(27*10)=-232Z=262.7-(200*57)=-11,137.3

Hence 262.7 has higher relative position

=[48-70]/11=-2

Z score=-2

The calculated Z score for the subsequent blood pressures is therefore = -2.

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Related Questions

Jill brought 3 1 3 boxes of carrot muffins for a bake sale. Mike brought 5 3 4 boxes of apple muffins. What is the total number of boxes of muffins Jill and Mike brought to the bake sale? Enter your answer as a fraction in simplest form.

Answers

The total number of boxes of muffins Jill and Mike brought to the bake sale is 9 1/12.

What are Mixed Fractions?

Mixed fractions are type of fractions which consist of a whole number part and a fractional part.

Mixed fractions are of the form a b/c where a is the whole number part and b/c is the fractional part.

Given that,

Number of boxes of carrot muffins Jill brought = 3 1/3 = (3 × 3 + 1) / 3 = 10/3

Number of boxes of apple muffins Mike brought = 5 3/4 = (5 × 4 + 3) / 4 = 23/4

Total number of muffins = (10/3) + (23/4)

                                        = [(10 × 4) + (23 × 3)] / [3 × 4]

                                        = (40 + 69) / 12

                                        = 109/12

                                        = 9 1/12

Hence the total number of boxes is 9 1/12.

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A passenger on a ship dropped his camera into the ocean. If it is descending at a rate of -4.2 meters per second, how long until it hits to bottom of the ocean, which is at -1,875 meters? (give your answer to the closest whole seconds)

Answers

The time it will take the camera to hit the floor of the ocean at the given rate would be = 446 secs ( to the closest whole seconds)

What is descending rate of an object?

The descending rate of an object is defined as the rate at which an object dropped from a height falls to the base of a given height.

The rate of sinking of the camera in the ocean = -4.2 m/s

The height from the passenger to the ocean floor = -1,875 meters

If -4.2 m = 1 sec

-1,875 m = X sec

Make X sec the subject of formula;

X sec = -1,875/-4.2

X sec = 446 secs ( to the closest whole seconds)

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in exercises 7\[dash]10, the augmented matrix of a linear system has been reduced by row operations to the form shown. in each case, continue the appropriate row operations and describe the solution set of the original system.

Answers

The solution set of the original system is

[tex]$\left[\begin{array}{l}x_1 \\ x_2 \\ x_3 \\ x_4\end{array}\right]=\left[\begin{array}{c}-3 \\ -5 \\ 6 \\ -3\end{array}\right]$[/tex]

What is augmented matrix of linear system?An easier technique to write a set of linear equations is to utilize enhanced matrices. In an augmented matrix, two sides of the matrix are separated by a vertical line that serves as a representation of a succession of equal signs. Each row in the augmented matrix above stands for a different equation.The columns of two matrices are combined to create a new matrix, which is known as an augmented matrix. When using matrices to solve straightforward linear equations, the augmented matrix is a crucial tool. The number of variables in the linear equation is the same as the number of rows in the augmented matrix.

Step 1

We are given with a row reduced matrix form.:

[tex]$$M=\left[\begin{array}{rrrrr}1 & -2 & 0 & 3 & -2 \\0 & 1 & 0 & -4 & 7 \\0 & 0 & 1 & 0 & 6 \\0 & 0 & 0 & 1 & -3\end{array}\right]$$[/tex]

We have to find the solution set using the appropriate steps.

Step 2: The Augmented matrix Form

[tex]$$\left[\begin{array}{cccc}1 & -2 & 0 & 3 \\0 & 1 & 0 & -4 \\0 & 0 & 1 & 0 \\0 & 0 & 0 & 1\end{array}\right]\left[\begin{array}{l}x_1 \\x_2 \\x_3 \\x_4\end{array}\right]=\left[\begin{array}{c}-2 \\7 \\6 \\-3\end{array}\right]$$[/tex]

Step 3: System of Equations

[tex]$$\begin{aligned}& x_1-2 x_2+3 x_4=-2 \\& x_2-4 x_4=7 \\& x_3=6 \\& x_4=-3\end{aligned}$$[/tex]

Step 4: The Back-Substitution

From last two rows, we have

[tex]$$\begin{aligned}& x_3=6 \\& x_4=-3\end{aligned}$$[/tex]

Now substitute in row-2, to get value of $x_2$

[tex]$$\begin{aligned}& x_2-4(-3)=7 \\& x_2+12=7 \\& x_2=7-12 \\& x_2=-5\end{aligned}$$[/tex]

Now substitute in row-1, to get value of $x_1$

[tex]$$\begin{aligned}& x_1-2(-5)+3(-3)=-2 \\& x_1+10-9=-2 \\& x_1+1=-2 \\& x_1=-3\end{aligned}$$[/tex]

So,

[tex]$\left[\begin{array}{l}x_1 \\ x_2 \\ x_3 \\ x_4\end{array}\right]=\left[\begin{array}{c}-3 \\ -5 \\ 6 \\ -3\end{array}\right]$[/tex]

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segment AB, which is 25 inches long, is the diameter of a circle. chord PQ meets AB perpendicularly at C, where AC = 16 inches. find the length of PQ.

Answers

In circle the length of PQ = 24 inches.

What is Circle?

A circle is a closed, two-dimensional object in which all points in the plane are equally spaced apart from the centre. The line of reflection symmetry is formed by each line that traverses the circle. Additionally, it possesses rotational symmetry around the centre for each angle.

Since AB= 25 inches and AC = 16 inches then

=> BC = AB-AC = 25-16 = 9 inches.

∠APB is a right angle because it is inscribed in a semicircle.

The three right triangles ᐃAPB, ᐃACP and ᐃPCB are all similar

because their corresponding angles are equal.  Therefore

=> [tex]\frac{AC}{PC}=\frac{PC}{BC}[/tex]

=> [tex]\frac{16}{PC}=\frac{PC}{9}[/tex]

=> [tex]PC^2 = 25*9 = 144 = 12^2[/tex]

=> PC = 12 inches

By symmetry , PC = QC then,

=> PQ = 12*2 = 24 inches.

Hence the length of PQ is 24 inches.

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what are the values of x and y? type the correct answer in each box. use numerals instead of words. x

Answers

The area of mathematics known as algebra aids in the representation of circumstances or problems as mathematical expressions.

Explain the algebra?

A common thread that runs through nearly all of mathematics is algebra, which is the study of variables and the rules for using them in formulas. All applications of mathematics require knowledge of elementary algebra since it deals with manipulating variables as though they were numbers.

Mathematical expressions can be used to depict situations or issues, and algebra is the field of mathematics that does this. For a mathematical expression to have meaning, it needs to include variables like x, y, and z as well as mathematical operations like addition, subtraction, multiplication, and division.

The order in which you perform operations in arithmetic and algebra is governed by a number of laws. The Commutative, Associative, and Distributive Laws are the three that receive the most attention.

y = -x + ____

y = x^2 + ____​

Given data :

The system of equations used to find the value of x is:

y = -x + 84

y = x² - 6

Let x represent the first number and y represent the second number.

The sum of the two numbers is 84, hence:

x + y = 84

y = -x + 84      (1)

The square of the first number is 6 more than the second number. Hence:

x² = 6 + y

y = x² - 6     (2)

The system of equations used to find the value of x is:

y = -x + 84

y = x² - 6

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Completed question:

Type the correct answer in each box. Use numerals instead of words. The sum of two numbers is 84. The square of the first number is 6 more than the second number. Write a system of equations to find the value of x, the first number, and y, the second number.

et S be the set of all positive integers n such that n^2 is a multiple of both 24 and 108. Which of the following integers are divisors of every integer n in S ?
A. 12
B. 24
C. 48
D. 72
E. 120

Answers

Only the integer 12 is a divisor of every other integer which is a part of the set S.

This is a classic problem where we are asked to find such an integer that is going to be a divisor of the above set S of integers. The set S of integers consists of those integers that when squared are both divisible by 24 and 108. Now we know 24 can be written as 2*2*2*3 and similarly 108 can be written as 2*2*3*3*3. The smallest perfect square (n^2) which is a multiple of both 24 and 108 is 2^4*3^4, thus the smallest n is 2^2*3^2 = 36. So, only 12 is a divisor of all integers in S.

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SOMEONE, PLEASE HELP I WILL APPRECIATE SO MUCH

Answers

The answer is…. 20

-Subtract the numbers
-Evaluate the power
-Then add the two numbers together

Solution: 20

Answer: 20

Step-by-step explanation: Hello! The first thing you have to do is substitute m = 7 and n = 5 into the equation 4 + (m - n)^4.  After substituting m and n into the equation, you will get: 4 + (7 - 5)^4.  Use PEMDAS (parentheses, exponents, multiplication, division, addition, and subtraction).  Parentheses is first, so solve everything inside of the parentheses first.  7 - 5 = 2.  Now you have 4 + (2)^4.  Next is exponents in pemdas, so solve the exponents.  2^4 = 2 x 2 x 2 x 2, or 4 x 4, or 16.  Now you have 4 + 16.  The last thing you have to do is add 4 + 16, which is 20.  The answer is 20.

A scientist has two solutions, which she labeled solution a and b. Each contains salt. She knows that solution a is 60% salt and solution b is 90% salt. She wants to obtain 150 ounces of a mixture that is 65% salt. How many ounces of each solution should be used?

Answers

We can start solving the problem by using a system of equations. Let's call the number of ounces of solution a x and the number of ounces of solution b y. From the problem statement, we know that:

x + y = 150 (because the total amount of the mixture is 150 ounces)

0.6x + 0.9y = 0.65(x + y) (because the mixture is 65% salt, and we can find the amount of salt in the mixture by multiplying the percentage by the total amount)

We can use the first equation to solve for one of the variables in terms of the other:

y = 150 - x

Now we can substitute this expression for y into the second equation:

0.6x + 0.9(150 - x) = 0.65(150)

0.6x + 135 - 0.9x = 97.5

-0.3x = -37.5

x = 125

Now we can use the first equation to find the value of y:

y = 150 - x

y = 150 - 125

y = 25

So the scientist should use 125 ounces of solution a and 25 ounces of solution b to obtain 150 ounces of a mixture that is 65% salt.

Find the y-intercept and the x-Intercept of the line below. Click on "None" If applicable.
(a) y-intercept:
(b) x-Intercept:

Answers

Answer:

y-int: none, x-int: -1

Step-by-step explanation:

It crossed the x-axis at -1 so the x-int is, you guessed it, -1

As for the y-int assuming that its just a straight line, there is none. It never crosses the y-axis meaning that y-int DNE (or just none in you case)

Can somone plss help mee

Answers

The property used to solve 7r + 2r is distributive property.

What is distributive property?

The distributive property states that an expression which is given in form of x (y + z) can be solved as x × (y + z) = xy + xz.

In other words,  the distributive property states that when a number is multiplied by the sum of two numbers, the first number can be distributed to both of those numbers .

Therefore,

7r + 2r

Using distributive law,

7r + 2r = r(7 + 2) = 9r

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find the radius and height of the right-circular cylinder of largest volume that can be inscribed in a right circular cone with radius 6 inches and height 10 inches. answer accurate to 3 decimal place. (volume of a cylinder

Answers

The radius of the right circular cylinder is 4 inches and the height is 3.33 inches.

Radius of cone=6inches

height of cone = 10 inches

Let the radius and height of the right circular cylinder be x and y respectively.

According to triangle similarities,

10-y/x=10/6

⇒10-y/x=5/3

⇒30-3y=5x

y=10-5x/3 ----1

The volume of the right circular cylinder is π[tex]r^{2}[/tex]h

v=  πx∧2y

substituting the value of y from 1

v=  π[tex]x^{2}[/tex](10-5x/3)

v=10πx^{2}- 5x∧3/3

We differentiate volume w.r.t radius

DV/dx= 20πx-5[tex]x^{2}[/tex]

setting derivative = 0

DV/dx= 20πx-5[tex]x^{2}[/tex]=0

5πx(4-x)=0

x=0 , x=4

[tex]D^{2}[/tex]V/Dx =20π-10πx

putting the maximum value of x in the second derivative we get,

X=Radius = 4inches

Y=height= 10-5x/3=3.33 inches

Therefore, The radius of the right circular cylinder is 4 inches and the height is 3.33 inches.

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1. The average annual pay of 4 construction workers is $46,800. Three of the workers earned these annual announcements of pay: $44,200; $47,450; $45,900. What was the annual pay of the fourth worker?

Please answer fast! Thx!

Answers

using simple  product and quotient, The annual pay of the fourth worker is 49650.

PRODUCT - The outcome of multiplying two or more numbers is the product of those numbers. QUOTIENT - The outcome of dividing two numbers is the quotient of the two numbers.

Formulate the following supplied conditions: 46800 × 4 - 45900 - 44200 - 47450

Make a calculation for the following: 187200 - 45900 - 44200 - 47450.

Add up or subtract 141300, 44200, and 47450.

Calculate the difference or total of 97100 minus 47450.

Calculate the difference or sum: 49650

get the outcome: 49650

The annual pay of the fourth worker is 49650

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$14,000 is invested for 2 months at an annual simple interest rate of 13%.

a) You will earn $
in interest (round to the nearest cent).

b) The future value is
(round to the nearest cent).

Answers

The simple interest is I = $ 303.33  and the amount after 2 months with rate of 13 % is A = $ 14,303.33

What is Simple Interest?

Simple interest is a method of calculating interest that ignores the impact of compounding. While interest frequently compounds throughout the course of a loan's set periods, simple interest does not. Simple interest is calculated by multiplying the principal amount by the interest rate, times the number of periods.

Simple Interest = ( Principal Amount x Rate x Time Period ) / 100

Given data ,

Let the simple interest be represented as I

Let the amount with simple interest be A = P + I

Now , the principal P = $ 14,000

The rate of interest R = 13 %

The number of months = 2 months

The number of years = 2/12 years

Simple Interest I = ( Principal Amount x Rate x Time Period ) / 100

Substituting the values in the equation , we get

Simple Interest I = ( 14,000 x 13 x ( 2/12 ) ) / 100

On simplifying the equation , we get

Simple Interest I = $ 303.33

Now , the amount after 2 months = P + I

Amount = $ 14,000 + $ 303.33 = $ 14,303.33

Hence , the interest is $ 303.33

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There were approximately 3.1 × 10⁸ people in the United States of America in 2010. The average person drank 3.3 × 10³ ounces of soda. Approximately how many total ounces of soda were drank in the USA in 2010?

Answers

Answer:

1.023 x [tex]10^{14}[/tex]    

Step-by-step explanation:

(3.1 x [tex]10^{8}[/tex])(3.3 x [tex]10^{3}[/tex])

(3.1 x 3.3)([tex]10^{8}[/tex] x [tex]10^{3}[/tex])

10.23 x  [tex]10^{13}[/tex]   When the bases are the same and we are multiplying we add the exponents

10.23 x [tex]10^{13}[/tex]  Is not in scientific notation because 10.23 is larger than 10

1.023 x [tex]10^{1}[/tex] x [tex]10^{13}[/tex]

1.023 x [tex]10^{14}[/tex]                                

Natalie just invited
100
100100 guests to a party in her small house. The base of her house is a rectangle with dimensions
8
m
8 m8, start text, space, m, end text by
16
m
16 m16, start text, space, m, end text. It's a good thing she didn't invite the fire marshal to the party!
Move points to create an outline of Natalie's house on the grid below.

Answers

The solution is 6 units by 12 units.

What is a rectangle?

A rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal; or a parallelogram containing a right angle. A rectangle with four sides of equal length is a square.

here, we have,

Since the measurements in meters are multiples of 4, it makes this problem a little easier.

First you divide 8 by 4 to get 2

Then divide 16 by 4 to get 4

After that you're going to multiply 3 units by both quotients separately.

So you multiply 3 by 2 to get 6

Then you multiply 3 by 4 to get 12

So, then you end up with a 6 unit by 12 unit drawing.

therefore, the answer is 6 units by 12 units.

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Murphy buys 5 bottles of water For $2.50 each and 3 sandwiches for $3.25 each. How much does murphy spend?

Answers

The amount Murphy spent is solved to be $22.25

How to solve for the amount Murphy spent

To calculate the amount Murphy spent the cost of the items and the units bought should be known. The calculation is done using the formula

= units bought * cost of each unit

From the question, we can deduce that

Murphy buys 5 bottles of water For $2.50 each

units bought = 5

cost of each = $2.50

amount spent = 5 * $2.5 = $12.5

Murphy buys 3 sandwiches for $3.25

units bought = 3

cost of each = $3.25

amount spent = 3 * $3.25 = $9.75

Total amount spent = spending for bottle water + spending for sandwiches

Total amount spent = $12.5 + $9.75

Total amount spent = $22.25

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any1 can solve this!?

Answers

The area of the shaded region is obtained as (π/√2) units².

What is area?

An object's area is how much space it takes up in two dimensions. It is the measurement of the quantity of unit squares that completely cover the surface of a closed figure.

The diagram is labelled.

The values for area of z and y needs to be obtained.

The result will be in the form |y| + z as when the integration will be done, y will come out to be negative.

Now, x + z is the area of rectangle ABCD.

Verify whether x and y are equal in magnitude -

[tex]\begin{aligned}& x=\int_{\frac{\pi}{4}}^{\frac{\pi}{2}} \frac{\cos \theta}{\sin ^2 \theta} d \theta=\left[\frac{-1}{\sin \theta}\right]_{\frac{\pi}{4}}^{\frac{\pi}{2}} \\& =-1-(\sqrt{2}) \\& =\sqrt{2}-1\end{aligned}[/tex]

[tex]\begin{aligned}& y=\int_{\frac{\pi}{2}}^{\frac{3\pi}{4}} \frac{\cos \theta}{\sin ^2 \theta} d \theta=\left[\frac{-1}{\sin \theta}\right]_{\frac{\pi}{2}}^{\frac{3\pi}{4}} \\& =-(\sqrt{2})-(-1) \\& =-\sqrt{2}+1\end{aligned}[/tex]

This is equal to |y| = x.

So, |y| + z is equivalent to writing x + z.

Now the formula for area of rectangle ABCD is -

Area = length × breadth

Area = √2 - [(3π/4) - (π/4)]

Area = √2 - (π/2)

Area = (π/√2)

Therefore, the area is found to be (π/√2) units².

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finally, use the midpoint of each slice to determine the height and sketch in the resulting 4 rectangles. use them to approximate ln(2), and write your answer below: can you tell if you are getting an over-estimate or and under-estimate? which of your four estimates gives you the closest answer to the value given by your calculator? select one

Answers

The rectangles approximate ln(2) as 0.693. The approximation is an under-estimate, as the rectangles only cover a portion of the graph. The closest estimate is the fourth one, as it is closest to the value given by the calculator.

1. Slice the graph into 4 equal parts by drawing vertical lines at x=0.5, x=1, and x=1.5.

2. Find the midpoints of each slice by calculating the average of the x-values of each slice. The midpoints are x=0.25, x=0.75, x=1.25, and x=1.75.

3. Determine the height of each rectangle at the midpoints. The heights are y=0.253, y=0.572, y=0.854, and y=1.092.

4. Sketch in the rectangles using the midpoints and heights calculated.

5. Approximate ln(2) as the sum of the areas of the four rectangles, which is 0.693. This is an under-estimate.

6. The closest estimate is the fourth one, as it is closest to the value given by the calculator (0.693).

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1-10. *convert the following decimal numbers to the indicated bases, using the methods of examples 1-4 on page 23 and 1-7 on page 24: 7562.45 to octal 1938.257 to hexadecimal 175.175 to binary.

Answers

The octal representation of 7562.45 is 3654.36, the hexadecimal representation 1938.257 of is 774.4112, and the binary representation of 175.175 is 10101111.110111.

What are Number Systems?

A number system is a system representing numbers. It is also called the system of numeration and it defines a set of values to represent a quantity.

1- To convert 7562.45 to octal, we first convert the whole number part of the decimal, 7562, to octal.

7562 in decimal = (710^3) + (510^2) + (610^1) + (210^0) = (7512) + (564) + (68) + (21) = 3654.

So the whole number part in octal is 3654.

2- Next, we convert the fractional part of the decimal, 0.45, to octal.

0.45 in decimal = 0.45 * 8^1 = 0.36

So the fractional part in octal is 0.36

3- Combining the whole number and fractional parts, we get the final octal representation as 3654.36

4- To convert 1938.257 to hexadecimal, we first convert the whole number part of the decimal, 1938, to hexadecimal.

1938 in decimal = (110^3) + (910^2) + (310^1) + (810^0) = (11024) + (9256) + (316) + (81) = 774.

So the whole number part in hexadecimal is 774.

5- Next, we convert the fractional part of the decimal, 0.257, to hexadecimal.

0.257 in decimal = 0.257 * 16^1 = 0.4112

So the fractional part in hexadecimal is 0.4112

6- Combining the whole number and fractional parts, we get the final hexadecimal representation as 774.4112

7- To convert 175.175 to binary, we first convert the whole number part of the decimal, 175, to binary.

175 in decimal = (110^2) + (710^1) + (510^0) = (1100) + (710) + (51) = 10101111

So the whole number part in binary is 10101111

8- Next, we convert the fractional part of the decimal, 0.175, to binary.

0.175 in decimal = (12^-1) + (72^-3) + (5*2^-4) = 0.110111

So the fractional part in binary is 0.110111

9- Combining the whole number and fractional parts, we get the final binary representation as 10101111.110111

Hence, the octal representation of 7562.45 is 3654.36, the hexadecimal representation 1938.257 of is 774.4112, and the binary representation of 175.175 is 10101111.110111.

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If a function f is an odd function and (x, y) is a point on its graph, then which of the following will also be a point on its graph? (A) (), x)(B) (-X, -y) (C) (--), -X) (D) (x, -y) (E) (-x, y)

Answers

If the equation for every x and x in the domain of f holds, then a function f is odd.  −f(x)=f(−x) − f ( x ) = f ( − x )

What is meant by odd function?

If the equation for every x and x in the domain of f holds, then a function f is odd. −f(x)=f(−x) − f ( x ) = f ( − x ) An odd function has a graph that, geometrically speaking, is rotationally symmetric with respect to the origin, meaning that the graph is unaffected by a 180° rotation of the origin.

An even function exists if an expression is obtained that is equivalent to f(x); an odd function exists if an expression is obtained that is equivalent to -f(x); and neither occurs, in which case it is neither.

An odd function is a function having a symmetrical graph about the origin. If a function doesn't display either symmetry, it cannot be either even or odd.

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which of the following is closest to prob that total weight of randomyl selected graperfurits is moret than 3.4 pounds

Answers

The probability that the total weight of the three randomly selected grapefruits is more than 3.4 pound will be equal to 0.842.  

What is Probability?Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes, or how likely they are, whenever we are unsure of how an event will turn out. Statistics is the study of events subject to probability.The likelihood that something will happen is known as probability. By dividing the total number of outcomes by the number of possible ways an event could occur, one can compute probability.The probability is determined as the ratio of likely outcomes to all plausible outcomes of an event. One can represent the percentage of successful outcomes, or x, for an experiment with 'n' outcomes.

From the data given in the question,

x > 3.4 lb

The mean is 1 lb.

The difference from the mean is 0.12 lb.

The z-score will be,

z = (3.4 - 1) / 0.12

z = 20

This is equivalent to an 84.20% or 0.842 probability.

The complete question is,

The weights of grapefruits of a certain variety are approximately normally distributed with a mean of 1 pound and a standard deviation of 0.12 pounds. Use scenario 6-9. what is the probability that the total weight of three randomly selected grapefruits is more than 3.4 pounds?

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True or False? In reference to different sampling methods, systematic sampling includes the steps: divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group. Select the correct answer below: O True O False

Answers

In reference to different sampling methods, systematic sampling includes the steps: divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group: [FALSE]

What is Systematic sampling?

Systematic sampling is a method of sampling where the sample is selected using a fixed interval, rather than using random sampling. The sampling process begins by selecting a random starting point in the population and then selecting every kth element from the population.

For example, if the population has 100 elements and k=10, every 10th element would be selected for the sample.

Dividing the population into groups, and then using simple random sampling to identify a proportionate number of individuals from each group is a method called stratified sampling.

It is important to note that systematic sampling can be vulnerable to sampling bias if the sampling interval is not chosen carefully and the population is not randomly ordered, because in that case, it will not be a truly random sample.

Hence, the correct answer to this is False.

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Manufacturing overhead is charged to three operating divisions on the basis of capital investment in the three divisions. If the investment is $10.8 million in the Eastern Division, $8.4 million in the Southern Division, and $17.4 million in the Far Eastern Division, how should manufacturing overhead of $888 000 be allocated to the three divisions?

Answers

Manufacturing overhead costs typically include the depreciation of equipment, wages provided to factory personnel, and power used to operate the equipment. $10.8 million, $8.4 million, and $17.4 million will make up the three divisions.

What are the costs of manufacturing overhead?

Manufacturing overhead (MOH) cost is the sum of all indirect costs incurred during the production of a good.

It is included in the cost of the final good along with the costs of direct materials and direct labor.

In the manufacturing sector, the three major cost components are materials, labor, and overhead. There are no hidden expenses.

In other words, while the foreman's pay and supplies are covered, neither the office's nor the corporation's accountant's pay is. To calculate applicable production overhead, multiply the overhead allocation rate by the amount of labor or equipment used. Therefore, if your allocation rate is $25, your applied manufacturing overhead for this product is $25.

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factot this trinomial. z^2-14Z+45
give answer in this form (z+a)(z+b)

Answers

The factor of the trinomial (z² - 14z + 45) are,

⇒ (z - 5) (z - 9)

What is Quadratic equation?

An algebraic equation with the second degree of the variable is called an Quadratic equation.

We have to given that;

The function is,

⇒ z² - 14z + 45

Now, We can factorize the trinomial as;

⇒ z² - 14z + 45

⇒ z² - (9 + 5)z + 45

⇒ z² - 9z - 5z + 45

⇒ z (z - 9) - 5 (z - 9)

⇒ (z - 5) (z - 9)

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Lena must choose a number between 61 and 107 that is a multiple of 3, 5, and 9. Write all the numbers that she could choose. If there is more than one number, separate them with commas.

Answers

Answer: the answer is 90

Step-by-step explanation:There is only one number between 61 and 107 that is a multiple of 3, 5 and 9. So that number will be  90.

Write the equation of the line that passes through the point (0, 1) and is perpendicular to the line y=1/5x+2

Answers

Answer:

the requisite equation for the given question is y=−5x

Step-by-step explanation:

firstly, select the coordinates (0, 0) through which the perpendicular line will cross (0,0)

then, locate the slope when y=15x+2y=15x+2.

The slope is 1/5 when expressed in the slope-intercept format.

therefore, m=1/5

since, a perpendicular line's equation must have a slope equal to the inverse reciprocal of its initial slope.

therefore, [tex]m_{perpendicular}[/tex]=−1/(1/5)

To determine the slope of the perpendicular line, simplify 1/(1/5).

[tex]m_{perpendicular}[/tex]=−5

By using point-slope method, determine the perpendicular line's equation.

y+0=−5.(x+0)

Solve for y.

y= -5x + 0

y=−5x

hence, the answer for the question is y=-5x

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Find all solutions for each triangle. If no solutions exist, write none. Round to the nearest tenth. A=76 degree, a=5, b=20

Answers

Utilize the fact that the sum of all triangles is 180 to determine that angle C is 42.

What is Pythagorean Theorem?According to the Pythagorean Theorem, the squares on a right triangle's hypotenuse, or the side that faces the right angle, are equal when added together.This is written as a2 + b2 = c2 in the usual algebraic notation. A fundamental relationship in Euclidean geometry between a right triangle's three sides is known as the Pythagorean theorem or Pythagoras' theorem. According to this rule, the area of the square with the hypotenuse side is equal to the sum of the areas of the squares with the other two sides.

Therefore,

There is no other way to resolve this, thus you must employ the Law of Cosines. You cannot apply the Pythagorean Theorem since it is not a right triangle. We can apply the Law of Cosines to determine the missing side length, and then the Law of Sines to determine an additional angle.

The Triangle Angle-Sum theorem will then be used to complete it. Ready?

The Cosine Law to find side b is

[tex]$b^2=a^2+c^2-2 a c \cos B$[/tex]

and fill in the info we know, which is everything but the b.

[tex]$b^2=(21)^2+(29)^2-2(21)(29) \cos 109$[/tex]

Doing all that math gives us that side

b = 40.9 or 41 .

Now the Law of Sines to find missing angle

A or C. Let's find

[tex]$A \cdot \frac{\sin A}{21}=\frac{\sin 109}{41}$[/tex].

That gives us that angle A is 29 .

Now use the fact that all triangles add up to 180 to get that angle C is 42

The complete question is:

Solve each triangle. Round your answers to the nearest tenth

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(4+9)+(4·9)=13+36=49

Answers

Answer:

(4+9)+(4·9)=13+36=49

Step-by-step explanation:

True

which of the following is the simplified expression of 1 minus the quantity 1 over cosecant squared x end quantity question mark

Answers

The simplified expression of 1 minus the quantity 1 over cosecant squared x is 1 - 1/cosec^2(x).

The expression 1 minus the quantity 1 over cosecant squared x can be simplified by dividing the 1 over cosecant squared x into its components. The cosecant squared x can be written as 1/cosec x, and then the 1/cosec x can be written as 1/sin x, with the cosecant being the reciprocal of the sine. Therefore, the expression 1 minus the quantity 1 over cosecant squared x can be written as 1 - 1/sin x. To simplify this expression further, the denominator of 1/sin x can be squared, resulting in 1 - 1/sin^2(x). Since the cosecant is the reciprocal of the sine, cosec^2(x) can be substituted for sin^2(x), giving us the simplified expression 1 - 1/cosec^2(x).

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The complete question: which of the following is the simplified expression of 1 minus the quantity 1 over cosecant squared x end quantity question mark 1 - csc^2(x)

Answer:

cos^2x

Step-by-step explanation:

Very simple, 1-1/csc^2 x

= 1-sin^2 x Using the reciprocal Identity 1/csc x = sin x

= cos^2 x Using the Pythagorean Identity 1 - sin^2 x = cos^2 x

therefore, the answer is cos^2 x.

Hope this helped

3. Write an equation, using variables, to represent the identities we der
4. Using your knowledge of identities, fill in each of the blanks.
a. 4+5- = 4
b. 25 + 10 = 25
_+16-16 = 45
d. 56-20+ 20 =_____
5. Using your knowledge of identities, fill in each of the blanks.
a. a+b-
=a
d.
-=
b. c-d+d=_
c. e+-f=e
_-h+h=g

Answers

The blanks has bee filled by using the correct identities of the algebra.

Explain the term identities?An equality that is certainly part of the values selected for its variables is called an identity. They are used to rearrange or simplify algebraic expressions. The two halves of an identity are, by definition, interchangeable, and we are always free to switch one for the other.Any value that is placed into the variable makes the identity equation always true. How to solve identity equations .Start by grouping like terms together until given any identity equation in a particular set of variables.

Part 4:

a. 5 + 5 - 6 = 4

b. 25 - 10 + 10 = 25

c. 24 + 16 - 16 = 24

d. 56 - 20 + 20 = 56

Part 5:  

a) a + b - b = a

b) c - d + d = c

c) e + f - f = e

d) g - h + h = g

Thus, the blanks has bee filled by using the correct identities of the algebra.

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The correct question is-

4. Using your knowledge of identities, fill in each of the blanks.

a. 5 + 5 - ___ = 4

b. 25 - ___ + 10 = 25

c. ___ + 16 - 16 = 24

d. 56 - 20 + 20 = ___

5. Using your knowledge of identities, fill in each of the blanks.

a) a + b - ___ = a

b) c - d + d = ____

c) e + ___ - f = e

d) ___ - h + h = g

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