1. In Mathevon et al. (2010) study of hyena laughter, or "giggling", they asked whether sound spectral properties of hyena's giggles are associated with age. The data show the giggle frequency (in hertz) and the age (in years) of 16 hyena. Age (years) 2 2 2 6 9 10 13 10 14 14 12 7 11 11 14 20 Fundamental frequency (Hz) 840 670 580 470 540 660 510 520 500 480 400 650 460 500 580 500 (a) What is the correlation coefficient r in the data? (Follow the following steps for your calculations) (i) Calculate the sum of squares of age. (i) Calculate the sum of squares for fundamental frequency. (iii) Calculate the sum of products between age and frequency. (iv) Compute the correlation coefficient, r.

The discriminant of the quadratic equation ax² + bx + c = 0 is b² - 4ac.

The equation is √ 2x² − 5x+ √ 2 = 0

So the value of a, b, c are 2, -5, √2 respectively

Therefore, the discriminant is (-5)² - 4(2)(√2) = 25 - 8√2

So, The discriminant for √ 2x² − 5x+ √ 2 = 0 is -8√2

Answer:

The discriminant of a quadratic equation ax² + bx + c = 0 is given by the formula:

b² - 4ac

Given the equation √ 2x² − 5x + √ 2 = 0, we can find the discriminant by substituting the values of a, b, and c into the formula:

b² - 4ac = (-5)² - 4(√2)(√2) = 25 - 8 = 17

So, the discriminant of the equation √ 2x² − 5x + √ 2 = 0 is 17

Step-by-step explanation:

The estimated value of an asset that is fixed at the end of its useful life or lease term is its residual value, which is often referred to as salvage value.

What is Mcq, or salvage value?

When an item reaches the end of its useful life, its salvage value—or potential market value—is estimated. It can also be described as the asset's book value after depreciation has been taken into account.

What does the depreciation formula's residual value mean?

The asset's final worth is its residual value. To obtain the entire amount, it is therefore deducted from the starting value. Consequently, we are given the depreciation figure. This sum is divided by the usable years of the asset using the straight-line depreciation technique.

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By graphing the system of equations, we can see that the solution of the system is (-5, -3).

Here we want to solve the following system of equations:

y = (2/5)*x - 1

2x - 3y + 1 = 0

To solve a system of equations graphically, we just need to graph both equations on the same coordinate axis, and then find the point where the two lines do intersect.

The graph of the system of equations can be seen on the image below.

Below you can see the graph of the system of equations, and you can see that the graphs intercept at the point (-5, -3)

To check if this is a solution, just replace these values in both equations and see if you get the same thing.

For the first one:

-3 = (2/5)*-5 - 1

-3 = -2 - 1

-3 = -3

And for the other line

2*-5 - 3*-3 + 1 = 0

-10 + 9 + 1 = 0

0 = 0

So the point is a solution for both equations.

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The median of the given data is 52, the lower quartile (Q1) is 41, the upper quartile (Q3) is 74, and the interquartile range (IQR) is 33.

Median: 52

Q1: 41

Q3: 74

IQR: 33

1. Arrange the numbers in ascending order: 38, 41, 42, 47, 48, 51, 72, 74, 74, 77, 82, 129

2. Count the number of data points: 12

3. Calculate the median by adding the two middle numbers and dividing by two: (47 + 48) / 2 = 52

4. Calculate the lower quartile (Q1) by finding the median of the lower half of the data: 41

5. Calculate the upper quartile (Q3) by finding the median of the upper half of the data: 74

6. Calculate the interquartile range (IQR) by subtracting the lower quartile from the upper quartile: 74 - 41 = 33

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Insurance is worth nothing more than a death benefit. Choice A is the correct choice.

Insurance is a form of protection against financial loss in which one party agrees to compensate the other party for a fee in the event of certain loss, damage, or injury. It is a type of risk management designed primarily to mitigate the risk of potential or uncertain losses. Capital life insurance is a generic term for capital life insurance.

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Answer: yes

Step-by-step explanation:

The total profit is  $ 16 earned by selling Pies and Cobblers in the market.

A system of equations comprises two or more equations and seeks common solutions to the equations. "A system of linear equations is a set of equations which are satisfied by the same set of variables."

A finite collection of equations for which we searched for the common solutions is referred to as a system of equations, also known as a set of simultaneous equations or an equation system. Similar to single equations, a system of equations can be categorized. In everyday life, systems of equations are used to model issues when the unknown values may be represented by variables.

A system of equations has only one unique solution if the L.H.S. and R.H.S. of all the provided equations in the system are identical when the variable or point of intersection of the lines representing those equations is substituted.

The number of pies made by John be x and number of cobblers be y.

profit on each Pie is $ 3 and that on Cobbler is $ 2

Let the number of cups of apple used in making pie be 3x

number of cups of flour used in making Pie is 2x

Let the number of cups of apple used in making cobbler be 2y

number of cups of flour used in making cobblers is 3y

Now as per the sum,

3x + 2y = 16 .........(i)

2x + 3y = 15 ..........(ii)

Multipling equation 1 with 2 and equation 2 with 3 then subtracting eq i from ii we get ,

6x + 4y - 6x - 9y = 32 - 45

y = 2.6 and  x = 3.6

Now the total profit is 3*3.6 + 2* 2.6 = $ 16.

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The two main approaches for image classification are supervised learning, which uses labeled data and involves training a model to map features to labels, and unsupervised learning, which does not require labeled data and involves clustering images based on their features and assigning labels to the clusters.

There are two main approaches to image classification:

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(A) To find x, we can use the fact that the measures of the angles in a triangle must add up to 180 degrees. So we can write an equation using that information and the measures of angles q and r:

m angle q + m angle r + 90 = 180

(3x+25) + (4x+30) + 90 = 180

so:

7x+45 = 90

7x = 45

x = 45/7 = 5

(B) To find the degree measure of each angle, we can substitute x = 5 back into the expressions for angles q and r.

m angle q = (3x+25) = (3*5+25) = 40 degrees

m angle r = (4x+30) = (4*5+30) = 50 degrees

Since the angle p is a right angle, it has a degree measure of 90 degrees.

So the angle measures are: angle q = 40 degrees, angle r = 50 degrees, angle p = 90 degrees.

The Midpoint Formula is given as, (x, y) = [(x₁ + x₂)/2, (y₁ + y₂)/2]

The midpoint formula is a mathematical equation that is used to locate the halfway point between two data points.

The key characteristic of this equation is that it calculates the percentage changes based on the difference between the beginning and the ending values.

Formula to Find the Midpoint:

To find the midpoint of the straight line in a graph, we use this midpoint formula that will enable us to find the coordinates of the endpoint of the given line.

Suppose the endpoints of the line is (x₁,y₁) and (x₂,y₂)  then the midpoint is given as:

The Midpoint Formula is given as,

(x,y)=[x₁+x₂/2,y₁+y₁/2]

Where x₁ and x₂ are the coordinates of the x-axis. y₁ and y₂  are the coordinates of the y-axis.

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The probability of spinning yellow and having the number cube show an odd number = 1/12.

What is probability ?

probability can be defined as the ratio of number of favourable outcomes and total number of outcomes .

Given,

A game includes spinning the spinner with 6 equal sections

Then rolling a number cube with numbers 1-6.

Let the probability of spinning a yellow be x .

and the probability of having the number cube showing an odd number be y .

so,

The probability of spinning yellow and having the number cube show an odd number = x * y .

x = 1/6 .

y = 3/6

y = 1/2

So,

x*y =  1/6 * 1/2

x*y = 1/12

Hence, The probability of spinning yellow and having the number cube show an odd number = 1/12.

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Answer:     4c^7d^8

Step-by-step explanation:

That was for a

Answer:

a) 4cd²

b) 3a²b³

Step-by-step explanation:

Divide the coefficients (8/2)

Subtract the exponents (c⁴ - c³, d⁵ - d³)

The algebraic equation have the value of c equal to 4.

An algebraic equation is a mathematical statement that involves two equated algebraic expressions.

The unknown value c can be evaluated for the agebraic equation 2(c + 1) = 10 as follows:

open brackets

2c + 2 = 10

subtract 2 from both sides of the equation

2c + 2 - 2 = 10 - 2

2c = 8

divide through by the coefficient of c

2c/2 = 8/2

x = 4

Therefore, the value of c that makes the algebraic equation true is 4.

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Our required ratio will be 8: 2: 24: 5 as per the given problem.

In our question, it is given that 1 Pound is equal to 16 ounces.

We will use this criterion for the rest of our solution.

Let’s convert all pounds to ounces.

1 pound =16 ounce

3 pound = 48 ounce

Now as per the problem, we have to find the ratio of 1 pound, 4 ounces, 3 pounds, 10 ounces.

= 1 pound: 4 ounces: 3 pounds: 10 ounce

= 16 ounces: 4 ounces: 48 ounces: 10 ounce

= 8: 2 : 24: 5

So our required ratio is 8: 2 : 24: 5.

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The solutions for the following equations are:

1. 2x + 1 = 7, x = 3

2. 4x + 7 = 11, x = 1

3. 2x - 3 = 7, x = 5

4. x + 3 = 4, x = 1

5. 3x - 11 = 19, x = 10

1. 2x + 1 = 7

2x = 7 - 1 = 6

2x = 6

divide both sides by 2

x = 6/2, x = 3

2. 4x + 7 = 11

= 4x = 11 - 7

= 4x = 4

divide both sides by 4

x = 4/4, x = 1

3. 2x - 3 = 7

= 2x = 7 + 3

= 2x = 10

divide both sides by 2

x = 10/2, x = 5

4. x + 3 = 4

= x = 4 - 3

x = 1

5. 3x - 11 = 19

3x = 19 + 11

3x = 30

divide both sides by 3

x = 30/3

x = 10

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The expression that is the best interpretation of the numerator in the given expression is option B. The numerator represents the difference between Charlene's quiz average and her lowest quiz grade.

A numerator is the top part of a fraction that represents the quantity being divided. For example, in the fraction 3/4, 3 is the numerator and 4 is the denominator. The numerator represents the number of parts being considered out of the total number represented by the denominator.

Therefore, the expression that expresses the interpretation of the numerator in the given expression is option B.

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Heron's formula is a formula used to calculate the area of a triangle when the lengths of its three sides are known.

It is named after Hero of Alexandria, a Greek mathematician and engineer who first derived this formula.

The formula states that the area of a triangle is equal to the square root of the product of the semi-perimeter (half the sum of the three sides) and the differences of the semi-perimeter and each side.

Mathematically, Heron's formula can be written as:

A = √(s(s-a)(s-b)(s-c)),

where A is the area of the triangle, s is the semi-perimeter and a, b, c are the length of the three sides of the triangle.

For example, if the lengths of the three sides of a triangle are 5 cm, 6 cm and 7 cm, then the semi-perimeter (s) is (5 + 6 + 7)/2 = 9 cm.

Using Heron's formula, the area of the triangle is:

A = √(9(9-5)(9-6)(9-7)) = √(9*4*3*2) = √432 = 6.48 cm2

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The correct set of numbers that can represent the sides of an acute triangle among the options given is 5, 7, 8.

To determine if a set of numbers can represent the sides of an acute triangle, we can use the rule that the sum of the squares of the two smallest sides should be greater than the square of the largest side. By applying this rule

it can be seen that set B (5, 7, 8) satisfies this condition and is therefore an acute triangle,

while the other sets do not satisfy this condition and therefore are not acute triangles. It's worth noting that there can be multiple sets of numbers that can represent the sides of an acute triangle.

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Answer: B

Explanation: 5, 7, 8

The value of the expression at, a= 4, c = 2, and d = - 2.5 is 18768.75.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, An expression -11с(а - d) + 121c²(a - d)² at, a= 4, c = 2 and d = - 2.5.

Simplifying the expression -11с(а - d) + 121c²(a - d)² we have,

= -11с(а - d) + (11c)²(a - d)².

= - 11c[(a - d) - 11c(a - d)²].

= - 11×2[4 + 2.5) - 11×2(4 + 2.5)²].

= - 22[6.25 - 22(6.25)²].

=  - 22[6.25 - 22×39.0625].

= - 22[6.25 - 859.375].

= - 22[- 853.125].

= 18768.75.

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Answer:

12097.8001

Step-by-step explanation:

On solving the provided question, An expression that finds the sum of x and y => X + Y

a collection of numbers, symbols, and operators (like + and ) that represent a value. Examples -  2 + 3 is a formula and there is also the statement 3 x/2. The equals symbol does not appear in expressions. Actually, none of these = ≠ < > ≤ ≥

We frequently have to understand a written phrase in order to write an expression. For instance, the notation x + 6 can be used to represent the phrase "6 added to some number," where x stands for the unknown value.

An expression that finds the sum of x and y -

=> X + Y

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Then the two solutions are: x = (4 + 5.66) / 8 = 11.2075  and x = (4 - 5.66) / 8 = -0.2075

The sine approximation formula of Bhaskara I is a rational equation in one variable for computing the approximations of the trigonometric sines found by Bhaskara I (c. 600–c. 680), an Indian mathematician of the seventh century.

Indian astronomer and mathematician Bhaskara II lived in the 12th century. He created a number of the same foundations and findings that are entirely attributable to Europeans and are still very helpful in modern science and forecasts, such as a basic form of calculus.

Here we have the equation:

y = 4 × x² - 4 × x - 1

And the graph should be available (you can see it below this answer)

Now, we're seeking answers to:

4 × x²- 4 × x - 1 = 0

The two x values at which the graph of our function intersects the y = 0 line, or the x-axis, will be these solutions.

The next step is to identify the two x values where our graph crosses the x-axis.

We can estimate the solutions in the graph as follows:

x = -0.2

x = 1.2

The Bhaskara's equation can be used to determine the precise solutions, and we will discover that the solutions are provided by:

[tex]$x=\frac{-(-4)+-\sqrt{(-4)^2-4 * 4 *(-1)}}{2 * 4}=\frac{4+-\sqrt{32}}{8}=\frac{4+-5.66}{8}[/tex]

Then the two solutions are:

x = (4 + 5.66) / 8 = 11.2075

x = (4 - 5.66) / 8 = -0.2075

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The solution is the set of all points (x,y) that satisfy the inequality y < 2x + 4.

What is the graph of a function?

The graph of a function is a visual representation of the relationship between the input values (x-coordinates) and the output values (y-coordinates) of the function. In other words, it is a visual representation of the function's rule.

The graph of a function can take many different forms, depending on the function's rule. Linear functions, for example, will produce a straight line on the graph.

To solve the inequality 2y – 4x < 8, we can start by isolating y by adding 4x to both sides:

2y < 4x + 8

then divide both sides by 2:

y < 2x + 4

This is the solution in slope-intercept form (y = mx + b), where the slope is m = 2 and the y-intercept is b = 4.

To graph the solution, you can pick a few x-values and substitute them into the inequality to find the corresponding y-values.

You can use x = -2, x = -1, x = 0, x = 1, x = 2, for example and find the y-values for each x, y < 2* -2 + 4 = 0, y < 2* -1 + 4 = 2, y < 20 + 4 = 4, y < 21 + 4 = 6 and y < 2*2 + 4 = 8.

Then plot those points on a coordinate plane and draw the line that goes through them, and shade the half-plane that is below the line

Hence, the solution is the set of all points (x,y) that satisfy the inequality y < 2x + 4.

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The solution is the set of all points (x,y) that satisfy the inequality y < x/4 - 3.

What is the graph of a function?

The graph of a function is a visual representation of the relationship between the input values (x-coordinates) and the output values (y-coordinates) of the function. In other words, it is a visual representation of the function's rule.

The graph of a function can take many different forms, depending on the function's rule. Linear functions, for example, will produce a straight line on the graph.

-4y > -x + 12 is a linear inequality. To solve this inequality, we can start by isolating y:

y < x/4 - 3

This inequality is in slope-intercept form (y = mx + b), where the slope is m = -1/4 and the y-intercept is b = -3.

To graph the solution, you can pick a few x-values and substitute them into the inequality to find the corresponding y-values.

You can use x = -8, x = -4, x = 0, x = 4, x = 8 for example and find the y-values for each x, y < -8/4 -3 = -2, y < -4/4 -3 = -1, y < 0/4 -3 = -3, y < 4/4 -3 = -1 and y < 8/4 -3 = -1/2.

Then plot those points on a coordinate plane and draw the line that goes through them, and shade the half-plane that is above the line

Hence, the solution is the set of all points (x,y) that satisfy the inequality y < x/4 - 3.

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The area of the path alone is equal to 178.98 square feet.

Remember that the area of a circle of radius R is:

A = pi*R^2

Where pi = 3.14

The area of the path alone will be equal to the difference between the areas of the circles where the path is included (radius of 11ft) and the area of the garden alone (radius is 8ft)

Then the area of the path alone is:

A = 3.14*(11 ft)^2 - 3.14*( 8 ft)^2

A = 178.98 ft^2

That is the approximate area of the path alone.

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Answer: x= 95° ;  y= 35°

Step-by-step explanation:

If J II K (symmetrical), then x°= 180°- 85°

                                            x°= 95°

In addition to this, because the J II K lines are symmetrical:

                               (5y-90)°= 85°

                              5y°- 90° = 85°

                                       5y°= 85°+ 90°

                                      5y° = 175°

                                  5y°/ 5 = 175°/5

                                          y°= 35°

A 3:2 aspect ratio image is a rectangular image where the width is 3 units and the height is 2 units. It means that the width of the image is 1.5 times its height.

This aspect ratio is commonly used in photography, as it is the standard aspect ratio of 35mm film cameras, and also it's used in some digital cameras, DSLRs, and mirrorless cameras.

A 3:2 aspect ratio image can be thought of as a rectangle that has a width of 3 units and a height of 2 units. When you take a picture with a 3:2 aspect ratio, it will have a width that is 50% larger than its height. This allows for a larger view of the subject, and also it is more suitable for landscape images and portrait images.

It's worth noting that other aspect ratios are also used in photography such as 4:3, 16:9, and 1:1, it depends on the camera's sensor and the photographer's preference.

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The graph of the equation or inequality 2y – 4x < 8 is given the in the attachment.

The term inequality refers to a mathematical expression with unequal sides. An inequality compares two values and determines whether one is less, greater, or equal to the value on the other side of the equation. In general, inequality equations are represented by five inequality symbols.

The inequality symbols are less than (<), greater than (>), less than or equal (≤), greater than or equal (≥), and not equal (≠).

Inequalities are used to compare numbers and determine the range or ranges of values that satisfy the conditions of a given variable.

Given that:

2y – 4x < 8

2y < 4x +8

y < 2x + 4

Plot this on graph.

Thus, y < 2x + 4 is inequality to be plotted on the graph.

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Answer:

100-9b

Step-by-step explanation:

equation: 100-9*b

simplified version: 100-9b