The department in a large university was accused of discrimination in their faculty hiring. fifteen percent of the recent female applicants who were not hired and fifteen percent of the records of recent male applicants who were not hired were randomly selected and compared with the records of the recent hires. what type of sampling design is this?

In class 9, matter is typically defined as anything that has mass and takes up space. Matter can be found in different forms and states, such as solid, liquid, and gas.

The study of matter in class 9 typically includes the following topics:

Properties of matter: Students learn about the different physical and chemical properties of matter, such as density, melting point, boiling point, and solubility.

States of matter: Students learn about the three states of matter (solid, liquid, and gas) and how they are different from each other in terms of properties such as shape, volume, and compressibility.

Changes of state: Students learn about how matter can change from one state to another, such as melting, freezing, boiling, and condensation.

Mixtures and solutions: Students learn about the different types of mixtures, such as homogeneous and heterogeneous mixtures, and solutions, such as true solutions, colloidal solutions, and suspensions.

Particles of matter: Students learn about the nature of matter and how matter is made up of tiny particles called atoms and molecules. They also learn about the arrangement of these particles in solids, liquids, and gases.

Physical and chemical changes: Students learn about the differences between physical and chemical changes in matter and examples of each.

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Brian has done a mistake in step 3.

What is the linear equation in one variable?

A linear equation in one variable is an equation that can be written in the form of "ax + b = 0" where a and b are constants and x is the variable. The equation will be a line when plotted on a graph.

The given equation is -4g + 11 = 5

Now we can add -11 in step 1,

-4g + 11 -11 = 5 - 11

-4g = -6

Now divide by -4

we get

  g = 3/2

We can see in the given picture in step 3, it should have been divided by -4 so in step 3 mistake was done.

Hence, Brian has done a mistake in step 3.

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9 11 13 15 17

first term (a) = 9

diffrence (d) = 11-9 = 13-11 = 2

we know

a + (n-1)d

9+(n-1)2

9+2n-2

7+2n

2n + 7

2n + 7 is the sequences of 9 11 13 15 17 for nth term

Answer:

x = 7 , VS = 6

Step-by-step explanation:

• If two chords of a circle are equidistant from the centre of the circle then they are congruent.

given ZU and ZV = 5

then the chords QR and ST are equidistant from the centre and are congruent , that is

QR = ST

2x - 2 = 12 ( add 2 to both sides )

2x = 14 ( divide both sides by 2 )

x = 7

---------------------------------------------------

• If a radius is perpendicular to a chord then it bisects it.

radius ZY is perpendicular to chord ST and bisects it, so

VS = [tex]\frac{1}{2}[/tex] × ST = [tex]\frac{1}{2}[/tex] × 12 = 6

Answer:

I believe the answer is Graph A

The polynomial function with zeroes at -2, 0, and 3√2 is (x+2)(x-0)(x-3√2) = [tex](x+2)*(x-3\sqrt{2}) = x^3 - 3x\sqrt{2x} - 2x^2.[/tex]

The polynomial function with zeroes at -1, 3, and 2i is (x+1)(x-3)(x-2i) = [tex](x+1)(x-3)(x^2+4) = x^3 +x^2 - 11x -12[/tex]

A polynomial function is a function of the form f(x) = a_nx^n + a_{n-1}x^{n-1} + ... + a_1x + a_0, where n is the degree of the polynomial and the a_i are constants. To find a polynomial function with zeroes at -2, 0, and 3√2, we can use the fact that if a polynomial function has a zero at x=c, then (x-c) is a factor of the polynomial. Therefore, we can write the polynomial function as [tex](x+2)(x-0)(x-3\sqrt{2}) = (x+2)x(x-3√2) = x^3 - 3x\sqrt{2x} - 2x^2[/tex].

In this case, we can see that x = -2, x = 0, x = 3√2 are the zeroes, so we know that (x+2), x and (x-3√2) are the factors of the polynomial.

Similarly, to find a polynomial function with zeroes at -1, 3, and 2i, we can use the fact that if a polynomial function has a zero at x=c, then (x-c) is a factor of the polynomial. Therefore, we can write the polynomial function as [tex](x+1)(x-3)(x-2i) = (x+1)(x-3)(x^2+4) = x^3 +x^2 - 11x -12[/tex]

In this case, we can see that x = -1, x = 3, x = 2i are the zeroes, so we know that [tex](x+1), (x-3), (x^2+4)[/tex]are the factors of the polynomial.

It is worth noting that (x-2i) is a zero of the polynomial, so (x-2i)(x+2i) = [tex]x^2[/tex]+4 is a factor of the polynomial and it is included in the polynomial..

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The sampling method described appears to be flawed.

Without additional information about the survey, it is difficult to determine the specific issues with the methodology, but there are a few potential issues that could affect the validity of the results.

First, the sample size of 2030 randomly selected adults may not be representative of the entire population. A larger sample size would be needed to be more representative of the population.

Second, the survey only asked about one specific behavior (sharing passwords) and it is not clear how the survey was conducted (e.g. online, phone, in-person) or if the survey was self-reported or not.

Third, It's not specified if the survey reached a diverse sample, which could be a problem if the survey only reached a certain demographic or geographic area.

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Correctly written question:

In a password survey of 2030 randomly selected adults, 39% said that they never share passwords with anyone. Does this sampling method appear to be sound or flawed?

The three conditions must be satisfied for a square to be in its simplest form, that is, first, No radicands other than 1 have perfect square factors. Secondly, there isn't a fraction in any radicand and finally, the fraction's denominator has no radicals.

A square root can be reduced to a simple form by first factoring it into primes, then finding the radical's index, and finally moving the group of numbers either inside or outside the radical.

The expressions both inside and outside the radical can then be made simpler by adding up all the numbers inside the radical.

The quotient property of square roots, which can be used to split radical expressions, is another beneficial property for simplifying radical expressions.

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Answer:

cp=(SP * 100 ) / ( 100 – percentage loss)

6786*100/100-13

7800

3/4 fraction of cupcake have vanilla fronting.

A fraction is a mathematical concept that represents a part of a whole or a ratio of two numbers. It is typically represented as two numbers separated by a line or a slash, with the top number representing the numerator and the bottom number representing the denominator. The numerator represents the number of parts being considered, and the denominator represents the total number of parts in the whole.

we have in total 9 cupcakes having vanilla froting and there are total 12 cupcakes.

so the fraction is given as :

9/12

since the HCF of (9,12) is 3

so the fraction in lowest form is 3/4

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The equation of the line is y = 3x-9(slope-intercept form).

The graph of the linear equation y = mx + c is a line with slope m and y-intercept m and c. This is known as the slope-intercept form of the linear equation, and the values of m and c are real numbers.

The slope, m, of a line represents its steepness. Sometimes the slope of a line is referred to as the gradient. A line's y-intercept, b, represents the y-coordinate of the point where the line's graph intersects the y-axis.

Given that,

m = 3

y = 9

Thus, The equation of the line is y = 3x-9(slope-intercept form).

Complete question: A linear function has a slope of 3 and crosses the y- axis at 9. What is the equation of the line?

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The required value of the x in a similar triangle by the ratio of proportionality of sides is given as 12.

Similar triangles are those triangles that have similar properties,i.e. angles and proportionality of sides.

Here,
In the figure, Similar triangles is shown,
Applying the property of proportional sides in the triangles

30/18 = 20/x
x = 18 / 30 × 20
x = 12

Thus, the required value of the x in a similar triangle by the ratio of proportionality of sides is given as 12.

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The degree of the given polynomial 7x³ + 5x + 4x³ + 2x² is 3.

The degree of a polynomial is the highest power of the variable present in the polynomial.

Now the given polynomial is 7x³ 5x 4x³ 2x², and the highest power of x is x³. This indicates that the degree of this polynomial is 3.

It's important to note that when working with polynomials, it's important to pay attention to the signs of the coefficients. In this case, we have 7x³, 5x, 4x³, and 2x². The x³ term has the highest degree, and its coefficient is 7; the x term has the second highest degree, and its coefficient is 5; the x³ term has the same degree as the 7x³ term, but the coefficient is different, and the x² term has the fourth highest degree, and its coefficient is 2.

--The given question is incomplete; the complete question is

"What is the degree of the polynomial 7x³ + 5x + 4x³ + 2x²?"--

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The axis of symmetry is the line x=3.

As y  is a linear term and x is quadratic, this means we’re dealing with either an ‘n-shaped’ parabola or a ‘u-shaped’ parabola.

As the coefficients of  x² and y have the same sign they’re both positive, which means we have a ‘u-shaped’ parabola.

One can express a parabola in the vertex form,  y=a(x−p)²+q, which tells us that the vertex is the point  (p,q)  and the axis of symmetry is the line x=p.

So, let’s apply this format to your parabola.

y=(x−3)²=(x−3)²+0

From this, it’s clear that:

The vertex is the point (3,0)

The axis of symmetry is the line x=3

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To multiply fractions:

First multiply the numerator with numerator, then multiply the denominator with the denominator. Lastly, simplify the resultant fraction, if required.

We know that the fraction is used to represent the portion or part of the whole thing.

The fraction has two parts: numerator and denominator.

The top part of fraction is numerator and the bottom part of fraction is denominator.

consider a fraction 1/8.

Here, numerator is 1, denominator is 8

When certain thing is divided into 8 equal parts then each part of is represented by fraction1/8

The multiplication of fractions is defined as the product of a fraction with a fraction or the product of a fraction with an integer or the product of a fraction with the variables.

The steps to multiply two fraction are:

1) First multiply the numerator with numerator

2) Then Multiply the denominator with the denominator

3) And lastly simplify the fractions, if required

In case of product of mixed fractions (a fraction which is a combination of a natural number and fraction),

First we change each mixed fraction to an improper fraction. Then multiply the fraction as mentioned above.

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Kweku age is 21 years and his brother kofi is 14 years

An equation is the equality between two algebraic expressions, which have at least one unknown or variable.

To solve this problem, we have to state the equation using the information of the problem:

Lets call Kweku's age as (x)

Sofi's age will be 2/3x

If both are 35 then the equation is as follow:

x + 2/3x = 35

Clearing the variable we have:

(3x+2x) /3 = 35

5x = 35*3

5x = 105

x = 105/5

x = 21

Kweku's age is 21 years

Sofi's age is 2/3x = 2/3*21 = 14 years

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The matched solution for given linear inequalities is given in image attached.

What are linear inequalities?

Inequality represents the mathematical expression in which both sides are not equal. If the relationship makes the non-equal comparison between two expressions or two numbers, then it is known as inequality in Maths. In this case, the equal sign “=” in the expression is replaced by any of the inequality symbols such as greater than symbol (>), less than symbol (<), greater than or equal to symbol (≥), less than or equal to symbol (≤) or not equal to symbol (≠). The different types of inequalities in Maths are polynomial inequality, rational inequality, absolute value inequality.

The symbols ‘<‘ and ‘>’ express the strict inequalities and the symbols ‘≤’ and ‘≥’ denote slack inequalities. A linear inequality seems exactly like a linear equation but there is a change in the symbol that relates two expressions.

e.g. y>x+2

The solution for linear inequalities  is provided in image.

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There are 3080 ways 3 men and 2 women can be chosen if they are equally considered, using the multiplication principle of counting

The 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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To the nearest tenth of a kilogram, m = 0.6 kg.

What is ttemperature rate ?

With increase in temperature, the rate of the reaction and the rate constant increases. As a generalization, the rate of the reaction (and the rate constant) becomes almost double for every ten degree rise in temperature. This is also called temperature coefficient.

the heat Q required to raise the temperature of water varies jointly as the mass m of the water and the amount of temperature change T, and Q = 20,930 J when m = 1 kg and T = 5°C.

So, write an equation for Q as:

Q = k * m * T

where k is a constant of proportionality.

Substituting the known values, we can find k:

20930 = k * 1 * 5

k = 20930 / (1 * 5) = 4186

Now that we have k, use it to find m when Q = 8349 J and T = 3°C:

8349 = 4186 * m * 3

m = 8349 / (4186 * 3)

To the nearest tenth of a kilogram, m = 0.6 kg.

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The mass of the water m is 0.7 kg.

Since Q varies jointly as m and T, we know that Q = k * m * T where k is a constant of proportionality. Using the given information, we can find the value of k:

Q = 20,930 J when m = 1 kg and T = 5° C

k = Q / (m * T) = 20,930 / (1 * 5) = 4186

Now that we have found k, we can use it to find m when Q = 8,349 J and T = 3°C:

Q = k * m * T

8,349 = 4186 * m * 3

m = 8,349 / (4186 * 3) = 8,349 / 12,558

m = 0.67 kg

To the nearest tenth of a kilogram, m = 0.7 kg.

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Answer: 2:7

Step-by-step explanation:

Vanilla icecream = 4

Chocolate icecream = 14

4:14=2:7

2X2=4

7X2=14

Step-by-step explanation:

a ratio is simply relating 2 (or more) groups and their sizes.

in our case here the ratio is

4/14 = 2/7

this is often written as

4:14 = 2:7

it means that for every 2 people liking (I assume "preferring") vanilla ice cream there are 7 people liking (preferring) chocolate ice cream.

FYI

in total, a ratio also tells us about the size of the sample for the observation or analysis. 4/14 tells us there are 18 (4+14) people in the survey. and the simplified form 2/7 tells us that we can split the whole survey group into units of 9 (2+7) people with the same behavior as the total group.

a ratio is a fraction (incl. all the calculation and comparison rules) with a special meaning.

so, don't mix the ratio up with e.g. the fractions of the different behaviors in the group :

4/18 = 2/9 of the whole group prefer vanilla.

14/18 = 7/9 of the whole group prefer chocolate.

the ratio is now the relative size relationship between both : 2/9 / 7/9 = 2/7

Reason: The 90 degree angle means we have a right angle, and it leads to a right triangle. The triangle is also scalene since all three angles are different (it means all side lengths are different).

The amount of peanuts Maggie puts in each container is 1/9 pounds per container.

Number of pounds of peanut Maggie has = 2/3 pounds

Number of containers = 6

Number of peanuts in each container = Number of pounds of peanut Maggie has / Number of containers

= 2/3 ÷ 6

multiply by the reciprocal of 6

= 2/3 × 1/6

= 2/18

= 1/9 pounds per container

Hence, there are 1/9 pounds of peanuts in each container if Maggie puts an equal amount.

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The tallest lighthouse in the world is the Jeddah Light. It is 133 m tall. A dhow is sailing away from this lighthouse. From the top of the lighthouse, the angle of depression to the dhow is 65° Later, the angle of depression has changed to 40°.

How far did the dhow travel during that time?

To solve this problem, we can use trigonometry and the fact that the angles in a triangle add up to 180°.

Let's call the distance between the lighthouse and the dhow "d".

We know that the angle of depression from the top of the lighthouse to the dhow is 65°, and the angle of depression later changed to 40°.

Let's call the angle between the horizontal and the line of sight from the lighthouse to the dhow, "x"

Since the angles in a triangle add up to 180°, we can say that:

x + 65 + 40 = 180

x = 75

Now, we can use the tangent function to find the distance d. We know that:

tan(x) = d / h

tan(75) = d / 133

d = 133 * tan(75)

Therefore, the dhow traveled 133 * tan(75) distance during that time.

The height of a triangle in Class 7, Height =  (2×Area)/ Base

​

A triangle is a polygon with three edges and 3 vertices. The terminology for categorizing triangles is more than two thousand years vintage, having been defined on the first actual page of Euclid's elements.

In Euclidean geometry, any three factors, while non-collinear, decide a completely unique triangle and simultaneously, a unique plane (i.e. a -dimensional Euclidean space). In different words, there's best one plane that consists of that triangle, and every triangle is contained in some plane. If the entire geometry is only the Euclidean plane, there is the best one plane and all triangles are contained in it; however, in higher-dimensional Euclidean spaces, this is not real. this text is ready triangles in Euclidean geometry, and in particular, the Euclidean plane, except wherein otherwise stated.

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Answer:

125

Step-by-step explanation:

5x + 20 + 3x - 8 = 180

8x + 12 = 180

8x = 168

x = 21

5(21) + 20

= 105 + 20

= 125

Hey there,

We have,

f(x) = x² + 11x + 30g(x) = x + 6

Now,

(f.g)(x) = f(g(x))

Substituting...

g(x) = x + 6f(g(x)) = f(x + 6)

Now,

f(x + 6)= (x + 6)² + 11(x + 6) + 30= x² + 12x + 36 + 11x + 66 + 30= x² + 23x + 132

So,The value is x² + 23x + 132

(a) The expression for the width of the rectangle is 7x + 1.

(b) The expression for the perimeter of the rectangle is 14x + 14.

(c) when x = 1/2, the perimeter of the rectangle is 21 in

The area of a rectangle is given by the formula:

A = L × W

where L and W are the length and width of the rectangle respectively

(a) Since A = 42x + 6 sq inches and L = 6 in. We have:

42x + 6 = 6 × W

42x + 6 = 6W

6W = 42x + 6    (divide through by 6)

W = 7x + 1 in

Thus, the expression for the width of the rectangle is 7x + 1

(b) The expression for the perimeter of the rectangle

The perimeter of a rectangle is given by the formula:

P = 2(L + W)

P = 2(6 + 7x + 1)

P = 2(7 + 7x)

P = 14x + 14 in

(c) when x = 1/2

P =  14x + 14

P = 14×(1/2) + 14

P = 7 + 14

P = 21 in

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Answer:7.5

Step-by-step explanation:

The median is the middle value of a set of observations when they are arranged in ascending order. Since the observations are already arranged in ascending order and there are 7 observations, the median will be the fourth value.

Given that the median is 32, we know that the fourth value is 32. The observations are:

13, x, 26, 32, 39, 41, 50

So x + 3x + 2 = 32

4x + 2 = 32

4x = 30

x = 7.5

The value of x is 7.5.

angle RQS = 101 degrees

angle TQS = 79 degrees

===================================================

Explanation:

A straight angle has a measure of 180 degrees. It's another way of saying "straight line".

The two angles shown add to 180.

We'll use this fact to solve for x.

(angleRQS) + (angleTQS) = angle RQT

(9x+2) + (7x+2) = 180

16x+4 = 180

16x = 180-4

16x = 176

x = 176/16

x = 11

Use this x value to determine the angles we're after.

Check:

(angleRQS) + (angleTQS) = 101+79 = 180 which confirms the answer is correct.