A sample of scores has mean of M 26, median of 28, and a mode of 29 What is the most Iikely shape for the sample distribution? a. Symmetrical b. positively skewed c. negatively skewed d. cannot be determined from the information given

Answer: 31/18.

Step-by-step explanation:

To add these fractions, we need to find a common denominator. In this case, the least common multiple of 3, 6, and 9 is 18. We can convert each fraction to an equivalent fraction with a denominator of 18, and then add the numerators:

8/9 + 2/3 + 1/6

= (8/9) * (2/2) + (2/3) * (6/6) + (1/6) * (3/3) (Multiplying each fraction by a form of 1 to obtain a common denominator of 18)

= 16/18 + 12/18 + 3/18 (Simplifying each fraction by multiplying the numerators)

= 31/18 (Adding the simplified numerators)

Therefore, the sum of 8/9, 2/3, and 1/6 is 31/18.

The surface area of the square base pyramid is 736 cm².

Surface area is the amount of space covering the outside of a three-dimensional shape. The surface area of a solid object is a measure of the total area that the surface of the object occupies.

here, we have,

Surface area = A + 1 / 2 ps

where

A = base area

p = perimeter of the base

s = slant height

Therefore,

A = 16² = 256 cm²

p = 4(16) = 64 cm

s = 15 cm

surface area = 256 + 1 /  2 × 64 × 15

surface area = 256 + 480

surface area = 736 cm²

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Steps per mile is a measure of how many steps a person takes to walk one mile, Which is 2000 steps.

It takes over 2,000 steps to walk one mile and 10,000 steps would be almost 5 miles, as the average person has a stride length of approximately 2.1 to 2.5 feet.

The number of steps required to walk a mile can vary from person to person depending on their height, weight and stride length. And Generally, taller people with longer strides take fewer steps per mile, while shorter people with shorter strides take more steps per mile.

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The scalars c1 = 2/5, c2 = -3/5, and c3 = -8/5 satisfy the equation:

c1M1 + c2M2 + c3M3 = [ 2 3 ][ 1 2 ]

We want to find the scalars c1, c2, and c3 such that:

c1M1 + c2M2 + c3M3 = M

Substituting the given matrices:

c1[ 2 2 ] c2[ -1 1 ] c3[ 1 2 ] [ 2 3 ]

[ 1 1 ] [ 2 1 ] [ 3 1 ] [ 1 2 ]

Multiplying each scalar by its corresponding matrix:

[ 2c1 - c2 + c3 2c1 + 2c2 + 3c3 ]

[ c1 + 2c2 + 3c3 c1 + c2 + 2c3 ]

Setting the result equal to M:

[ 2c1 - c2 + c3 2c1 + 2c2 + 3c3 ] = [ 2 3 ]

[ c1 + 2c2 + 3c3 c1 + c2 + 2c3 ] [ 1 2 ]

This gives us two equations:

2c1 - c2 + c3 = 2

2c1 + 2c2 + 3c3 = 3

c1 + 2c2 + 3c3 = 1

c1 + c2 + 2c3 = 2

We can solve this system of equations using any method we prefer, such as elimination or substitution. Here, we will use elimination.

Subtracting the first equation from the second, we get:

3c2 + 4c3 = 1

Subtracting the third equation from fourth, we get:

c2 - c3 = 1

Multiplying second equation by 2, we get:

4c1 + 4c2 + 6c3 = 6

Subtracting first equation from this, we get:

5c2 + 5c3 = 4

Now we have three equations for c2 and c3:

3c2 + 4c3 = 1

c2 - c3 = 1

5c2 + 5c3 = 4

Solving for c2 and c3 using elimination, we get:

c2 = -3/5

c3 = -8/5

Substituting these values into the third equation, we get:

c1 = 2/5

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Answer:

Listed below

Step-by-step explanation:

  1. To solve number 1 we need to find a common denominator.

A common denominator consists of two or more fractions that have the same denominator.

[tex]\frac{3}{4} =\frac{6}{8}[/tex]

How can we convert this? Well, to go from 4 to 8, we multiply by 2. Doing the same to the top number (Numerator) will get us a fraction of [tex]\frac{6}{8}[/tex].

Adding the two fractions together:

[tex]\frac{7}{8} +\frac{6}{8}= \frac{13}{8} or1 \frac{5}{8}[/tex]

Therefore, the answer to question 1 is [tex]1\frac{5}{8}[/tex].

   2.  If there are 60 students in a class, and [tex]\frac{3}{4}[/tex] of them are girls, we can use this equation to solve for the number of girls in the class:

We multiply by 0.75 because 0.75 is equivalent to [tex]\frac{3}{4}[/tex].

So, there are 45 girls in the class.

To solve for the rest of the class that are boys, we can use this equation:

The answer to question 2 is 15 boys.

  3. If the temperature was -2°C, and it is now 8°C, we can use this equation to solve for the temperature difference:

So, the temperature difference is 10°C.

  4. If Mt. Everest's elevation is at 29,028 feet, and the dead sea is -458, we can use this equation to solve for the difference in elevation:

Therefore, the difference in elevation is 29,486 feet.

Answer:

20 tons

Step-by-step explanation:

To convert pounds to tons, we need to divide the number of pounds by the number of pounds in a ton.

There are 2,000 pounds in one ton.

To convert 40,000 pounds to tons, we divide 40,000 by 2,000:

40,000 pounds / 2,000 pounds/ton = 20 tons

Therefore, 40,000 pounds is equivalent to 20 tons.

Using the Pythagorean theorem we get the value of the missing leg BC in the triangle is 6 miles.

Since AC is the hypotenuse and AB is one of the legs of the right-angled triangle ABC, BC is the other leg. Using the Pythagorean theorem, we have:

BC² = AC² - AB²

When we replace the values in the problem, we obtain:

BC²= 10² - 8²

BC² = 100 - 64

BC² = 36

The result of taking the square root of both the sides is:

BC = 6

Therefore, the value of the missing leg BC in the triangle is 6 miles. The Pythagorean Theorem is a fundamental concept in mathematics that relates to right-angled triangles. This theorem is named after the ancient Greek mathematician Pythagoras, who is credited with discovering it. The hypotenuse is the side of a right-angled triangle that is opposite the right angle. It is the longest side of the triangle and is always opposite the largest angle. The hypotenuse is important because it determines the size of the triangle and is used in many calculations involving right-angled triangles. The Pythagorean Theorem is used in various fields such  as engineering, physics, and construction. It is a basic tool for calculating distances and determining whether or not a triangle is a right-angled triangle.

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The solutions are x=3.69 and x=-4.2

A quadratic equation is a second-order polynomial equation in a single variable x , ax2+bx+c=0. with a ≠ 0 .

2x²+x-31=0

Solve this with the quadratic formula

x=-b±√b²-4ac/2a

a=2,b=1,c=-31

x=-1±√1+248/4

x=-1±√249/4

x=-1+√249/4

x=-1 + 15.77/4 =14.77/4

x=3.6925

and x=-1-√249/4

x=-1 -15.77/4 =-4.1925

Hence, the solutions are x=3.69 and x=-4.2

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In order to expand and simplify an expression, we need to multiply out the brackets and then simplify the resulting expression by collecting the like terms. Expanding brackets is the process by which we remove brackets. It is the reverse process of factorization.

To expand and simplify a binomial, use the distributive property. The distributive property states that for any two binomials, the product of each term in the first binomial and each term in the second binomial should be added together to get the expanded form of the expression.

For example, the binomial (2x + 3)(4x + 7) can be expanded using the distributive property by multiplying each term of the first binomial with each term in the second binomial. This gives us:

(2x × 4x) + (2x × 7) + (3 × 4x) + (3 × 7)

And simplifying this expression yields 8x² + 14x + 21.

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The factor that represents the area of the yard that can be mowed is (225 - x²).

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 total area of the lawn is given by the formula -

Area of square lawn = (side length of square lawn)²

= (15 yards)²

= 225 square yards

The shed is also a square, with side length x yards.

So, the area of the shed is -

Area of square shed = (side length of square shed)²

= x²

To find the area of the yard that can be mowed, we need to subtract the area of the shed from the total area of the lawn -

Area of yard that can be mowed = Area of square lawn - Area of square shed

= 225 - x²

Therefore, the value is obtained as (225 - x²).

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Assuming that the iron plate is lifted to a height against the gravitational force, we can use the formula for potential energy:

Potential Energy = mass x gravity x height

where mass is in kg, gravity is 9.81 m/s^2, and height is in meters.

Rearranging the formula to solve for height, we have:

height = Potential Energy / (mass x gravity)

Plugging in the given values, we have:

height = 2000 J / (10 kg x 9.81 m/s^2)

height = 20.34 meters (rounded to two decimal places)

Therefore, the height of the iron plate is approximately 20.34 meters.

Karen received a 15% discount of $15, which brought the price down to $85.

Let's assume the original cost of the clothes was x dollars.

If Karen got a 15% discount, then she paid 85% of the original price.

This can be expressed in an equation as:

0.85x = 85

To find x, we need to isolate it on one side of the equation.

We can do this by dividing both sides by 0.85:

x = 85 / 0.85

x = 100

Hence, the original cost of the clothes was $100.

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Answer: x=15

Step-by-step explanation:

3x+5=50

3+5=50

Subtract the numbers

3x+5-5=50-5

3x/3=45/5

x=15

The benefit of doing so is: If the teenager has earned less than $12,000 then they don't get the federal taxes withheld. It would be beneficial to the teen because they would get more money.

A teen might want to claim exemption from federal income taxes being withheld from their paycheck if they expect to earn less than the standard deduction amount for the tax year and they will not owe any federal income tax.

For the tax year 2022, the standard deduction amount for a single taxpayer who is not claimed as a dependent on another taxpayer's return is $12,950.

By claiming exemption from federal income taxes, the teen would have more money in their paycheck and would not have to wait to receive a tax refund when they file their tax return at the end of the year.

However, if the teen ends up earning more than the standard deduction amount or if they have other sources of taxable income, they may owe federal income tax and may have to pay a penalty for not having enough taxes withheld during the year.

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The median age of the runners is 23.5.

By adding up all the numbers in a data collection and dividing by the total number of values in the set, the mean (average) of the data set can be determined. The median is the middle when a data set is sorted from least to greatest.

We must first arrange the ages from youngest to oldest in order to determine the median:

14, 15, 16, 19, 19, 23, 24, 27, 30, 31, 31, 33

The median will be the average of the sixth and seventh values in this sorted list because there are 12 runners:

(23 + 24) / 2 = 23.5 is the median.

Hence, 23.5 is the runners' median age.

The median, in terms of meaning, is the data set's middle value. In this instance, the age is the exact midpoint between the ages of the 12 racers. It is a central tendency index that shows how typical or representative the data are.

In this situation, the median age of 23.5 can be interpreted as the typical age of the marathon runners. Half of the runners were over 23.5 years old, and half were under that age. Although the middle figure is closer to the lower end of the age spectrum than the higher end, it can also help us estimate the runners' age range. The disparity between the runners' lowest and highest ages is not, however, directly shown.

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The substitution method calculator online shows the substitution method's result for the pair of linear equations.

One way to solve a system of linear equations with one or more unknown variables in mathematics is the substitution method. For the purpose of solving simultaneous equations, the substitution method is regarded as an algebraic technique. By resolving the equations, this method allows one variable's value to be determined. Any of the preceding equations can be solved by replacing the first variable's value for another variable.

The substitution technique calculator should be used as follows:

Step 1: Type the linear equations' coefficients into the input field.

Step 2: Then, select "Solve" to see the outcome.

Step 3: Lastly, the output field will show the value of the variables x and y in the linear equations solved using the substitution approach.

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Based on the data, it can be inferred that the magnitude and direction of PQ is 9.5 north of east for 6.1 miles (option D).

To identify the magnitude and direction of the plane, we must carefully look at the information in the graph and identify the option that corresponds to the information.

So, we can say that this is moving from the south to the north and from the west to the east, so options A and C would be ruled out. Now we must identify the magnitude and degrees. Taking a completely horizontal line as a reference, we could say that the plane has 9.5 degrees in its trajectory. So the correct option would be D.

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Answer:ob

Step-by-step explanation:

The solution for these discrete mathematics questions will be: a) No. The element d is in two of the sets. B) Yes C) No. The element 4 is in two of the sets. D) No. None of the sets contains 6. E) a) no b) yes

The study of mathematical structures that are discrete rather than continuous (it's similar to discrete variables and having a bijection with the set of natural numbers) is known as discrete mathematics. Graphs, integers, and logical statements are among the objects studied in discrete mathematics.

Both finite and infinite sets of objects can be studied in discrete mathematics. Some areas of discrete mathematics that deal with finite sets, especially those that have a bearing on business, are referred to as "finite mathematics" at times.

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Note that the full question is:

a) Is {{a, d, e}, {b, c}, {d, f}} a partition of {a, b, c, d, e, f }?

Yes or No

(b) Is {{w, x, v}, {u, y, q}, {p, z}} a partition of {p, q, u, v, w, x, y, z}?

Yes or No

(c) Is {{5, 4}, {7, 2}, {1, 3, 4}, {6, 8}} a partition of (1, 2, 3, 4, 5, 6, 7, 8}?

Yes or No

(d) Is {{3, 7, 8}, {2, 9}, {1, 4, 5}} a partition of {1, 2, 3, 4, 5, 6, 7, 8, 9}?

Yes or No

(e) Is {{1, 5}, {4, 7}, {2, 8, 6, 3}} a partition of {1, 2, 3, 4, 5, 6, 7, 8}?

Yes or No

The Volume of Alcohol when Mass is 1000 Kg and Density is 790kg/m³

is 1.265 m³

The relationship between a substance's mass and the amount of space it occupies is known as its density (volume). The density of a substance is determined by the mass, size, and arrangement of its atoms. Density (D) is defined as the product of a substance's mass and volume.

Given:

Mass of Alcohol = 1000 Kg

Density of alcohol = 790kg/m³

Using The formula

Density= Mass / Volume

790 = 1000/ Volume

Volume = 1000/ 790

Volume = 1.265 m³

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The Translation of given Question:

What volume in cubic meters does 1000kg of alcohol occupy with a density of 790kg/m3

Answer:

b = 70 degrees

Step-by-step explanation:

A triangle has a total of 180 degrees.

We know 2 angles, one is 80 degrees, and one is 30 degrees.

80 + 30 = 110 degrees.

180 - 110 = 70 degrees

So, b = 70 degrees.

The image of the transformation is added as an attachment

From the question, we have the following parameters that can be used in our computation:

The figure

From the figure, we can see that

The horizontal line is the axis of rotation

Using the above as a guide, we have the following:

The image of the transformation would be a reflection of the original figure on the other axis

See attachment for the image of the transformation

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To find the minimum score you would need to be in the top 4%, we need to use the standard normal distribution and the given z-score.

First, we find the z-score corresponding to the top 4% using a standard normal distribution table or a calculator:

z = invNorm(1 - 0.04) = invNorm(0.96) = 1.7507 (rounded to four decimal places)

The minimum score needed to be in the top 4% is the score that corresponds to this z-score in the distribution of exam scores. We can use the formula for standardizing a normal random variable to find this score:

z = (X - μ) / σ

where X is the exam score, μ is the mean of the exam scores, and σ is the standard deviation of the exam scores.

Solving for X, we get:

X = zσ + μ = 1.75076.1 + 76.4 = 87.46

Therefore, the minimum score you would need to be in the top 4% is approximately 87.46 points.

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Answer:

Using 3.14 for π, we have:

[tex]32(26) + \frac{1}{2} (3.14)( {13}^{2} ) = 1097.33[/tex]

about 1,097.33 square feet

The amount of money you have in your account after years 1, 2, 3, and 4 are $102.25, $204.5, $306.75 and $409 respectively.

Interest is the price you pay to borrow money or the cost you charge to lend money. Interest is most often reflected as an annual percentage of the amount of a loan.

Given that, you have 100 dollars in your bank account, and you earn 2.25% interest per year.

We need to find the amount of money you have in your account after years 1, 2, 3, and 4 years

Find for Simple interset :-

Simple interset = PRT / 100

P = Principal amount, r = rate and  t = year

For 1 year, put t = 1

A = 100×1×2.25 / 100 + 100

= $102.25

To find the amount for 2nd, 3rd and 4th year, just multiply these numbers to the interset earned in 1st year,

For 2 year,

A = $102.25×2

A = $204.5

For 3 year,

A = $102.25×3

A = $306.75

For 4 year,

A = $102.25×4

A = $409

Hence, the amount of money you have in your account after years 1, 2, 3, and 4 are $102.25, $204.5, $306.75 and $409 respectively.

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The sum of all the odd integers numbering from 1 to 99 is given by th e term 2500.

S = n(a + l)/2, where S is the sum of the successive numbers, n is the number of integers, an is the first term, and l is the last term, is the formula for computing the sum of integers.

Finding the sum of odd numbers from 1 to 99

so the series become

1 + 3 + 5 + 7 + ......+ 99

So this is arithmetic series with common difference of d = 2 and first term be a = 1 and last term be 99

l = a + (n-1)d

99 = 1 + (n-1) 2

n-1 = 98/2

n-1 = 49

n = 50

We know that sum of nth term of AP

s = n/2(a + l)

s = 50/2 (1 + 99)

s = 25(100)

s = 2500

Therefore, the sum of all odd number from 1 to 99 is 2500.

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Answer:

hypotenuse squared

Step-by-step explanation:

for example

if we have a triangle with sides 6,8, and 10

then

36+64=100

the complete equation is

[tex]\sqrt{a^{2} +b^2[/tex]=c

The linear system Ax = b is called homogeneous if b = 0; otherwise, it is called inhomogeneous. When all of the constant terms in a system of linear equations are zero, the system is said to be homogeneous. The related homogeneous system of a nonhomogeneous system is obtained by setting the constant term in each equation equal to zero.

There is always one solution, the zero vector, to a homogeneous system. A homogeneous system that has undergone a row operation maintains its homogeneity. It is significant to notice that we frequently exclude the final column of constant terms when representing a homogeneous system as a matrix since row operations would not change that column. So, rather than using an augmented matrix, we employ a standard matrix. There could be no specific solution and an empty solution set in the nonhomogeneous system. In a nonhomogeneous linear system of n equations in n variables, the origin is not always present at the intersection of the solution sets. Although an infinite intersection is still theoretically possible, a single point is still the most likely scenario for the intersection. But, there is also the chance of an empty intersection, which has no solution, as might occur, for instance, when intersecting two parallel lines.

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Answer:310.45

Step-by-step explanation: