a study indicates that the weights of adults are normally distributed with a mean of 140 lbs and a standard deviation of 25 lbs. what is the probability that a randomly selected adult weights between 120 and 165 lbs?

Answer:

157 pounds I'm pretty sure the equation would be 1.65c=p

Step-by-step explanation:

p is 1 because no given varible since p=1 pound 1.65 would equal p they 157 pounds bc 260.10/1.65 gives you 157 rounded

The statement that shows the correct definition of multicollinearity is that when several variables are related to each other, it is very likely that more than one of these variables does not account for much additional variation. That is option C.

Multicollinearity is defined as the phenomenon that shows the correlative relationship that exists between independent variables in statistics.

The occurrence of multicollinearity found between independent variables is that it will result in less reliable statistical inference and a problem because independent variables should be independent.

Also, more than one of these variables does not account for much additional variation because, changes in one variable are associated with shifts in another variable.

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4 divided by 1/5=20

1st

you change the 4 to 4/1

2nd

you change the 1/5 to 5/1

3rd

multiply 4/1x5/1 which gives you 20

In triangle ΔABC angle m∠A = 38.68°

An angle is the space between of the point of intersection of two rays meeting at a common vertex.

Since we have triangle ΔABC and m∠B = 90 and the ratio BC/AC = 0.625. We desire to find angle A, we proceed as follows.

In  ΔABC, since m∠B = 90, this implies that ΔABC is a right-angled triangle.

Also, the ratio BC/AC = cosC

Since BC/AC = 0.625

⇒ cosC = 0.625

Taking inverse cosine of both sides, we have

C = cos⁻¹(0.625)

= 51.318°

≅ 51.32°

Also in ΔABC

m∠A + m∠B + m∠C = 180°  (sum of angles in a triangle)

So, m∠A = 180° - m∠B - m∠C

= 180° - 90° - 51.32°

= 90° - 51.32°

= 38.68°

So, angle m∠A = 38.68°

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The distribution of test scores shows that most students did not do well on the test; some did fine and only a few did exceedingly well. The distribution is likely to be skewed.

What is a skewed distribution?

A skewed distribution is one in which the data is not uniformly distributed but rather concentrated on one side. In simple words, a skewed distribution is one in which one tail has a greater number of observations than the other tail, with the majority of data falling in the tail with the greater number of observations.

In a symmetric distribution, the data is uniformly distributed on both sides of the median, with half of the data lying to the right and half to the left.

Thus, the distribution of test scores shows that most students did not do well on the test; some did fine and only a few did exceedingly well. The distribution is likely to be skewed.

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In the figure of circle provided. the value of x is

In a circle, equal chords subtends equal arc length.

In the problem it was given that:

chord SU is equal to chord ST hence we have that

x + x + 38 = 360 (angle in a circle)

collecting like terms

2x + 38 = 360

2x = 360 - 38

2x = 322

Isolating x by dividing both sides by 2

2x / 2 = 322 / 2

x = 161

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In the equatiοn , the value οf T=4.7 .

A mathematical assertiοn that shοws the equality οf twο mathematical expressiοns is what an equatiοn in algebra is defined as. Fοr example, the equatiοn 3x + 5 = 14 is cοmpοsed οf the twο equatiοns 3x + 5 and 14, which are separated by the equal sign.

Here the given m=120 and f=25.6

Nοw substitute intο equatiοn then T=m/f

=> T= 120/25.6

cοnvert decimal intο fractiοn then

=> T=[tex]\frac{120}{\frac{256}{10}}[/tex]

=> T = 120 × 10/256

=> T = 120 × 5/128

=>T = 75/16 = 4.7

Hence the value of T=4.7.

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The number of categories of outcomes per trial for a multinomial probability distribution is three or more.

The number of categories of outcomes per trial for a multinomial probability distribution is three or more. A multinomial probability distribution is a probability distribution that can be used to describe the possible outcomes of a trial with multiple categories. Each trial can have two or more categories, with each category having one or more outcomes. Therefore, the number of categories of outcomes per trial for a multinomial probability distribution is three or more.

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There are 11 people in your sample size and 80% of them can read.

To be 87% sure that 7 of the 11 people could read, you would need to interview eight people.

To calculate this, you need to use a binomial probability formula.

This formula will allow you to calculate the number of successes (people who can read) that must be achieved in order to have an 87% certainty that the sample size of 11 people is representative of the population.

The formula you need to use is P(x) = n! / (x! (n - x)!).

You'll want to plug in x = 7, n = 8. This will give you the probability of 8 successes in 8 trials, which is equal to 0.87. Therefore, you will need to interview 8 people in order to be 87% sure that 7 of the 11 people could read.

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The point that partitions segment AB in a 1:4 ratio is [tex]P = \left(-1, -\frac{2}{5}\right)$[/tex].

To find the point that partitions segment AB in a 1:4 ratio, we can use the section formula.

Let P = (x, y) be the point that partitions segment AB in a 1:4 ratio, where AP:PB = 1:4. Then, we have:

[tex]$\frac{AP}{AB} = \frac{1}{1+4} = \frac{1}{5}$$[/tex]

and

[tex]$\frac{PB}{AB} = \frac{4}{1+4} = \frac{4}{5}$$[/tex]

Using the distance formula, we can find the lengths of AP, PB, and AB:

[tex]AP &= \sqrt{(x+3)^2 + (y-2)^2} \\PB &= \sqrt{(x-7)^2 + (y+10)^2} \\\ AB &= \sqrt{(7+3)^2 + (-10-2)^2} = \sqrt{244}[/tex]

Substituting these into the section formula, we have:

[tex]$\begin{aligned}x &= \frac{4\cdot(-3) + 1\cdot(7)}{1+4} = -1 \ y &= \frac{4\cdot2 + 1\cdot(-10)}{1+4} = -\frac{2}{5}\end{aligned}$$[/tex]

Therefore, the point that partitions segment AB in a 1:4 ratio is [tex]P = \left(-1, -\frac{2}{5}\right)$[/tex].

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Answer:

[tex]\large\boxed{\textsf{Central Angles are made up of 2 Radiuses.}}[/tex]

[tex]\large\underline{\textsf{What are Central Angles?}}[/tex]

[tex]\textsf{Central Angles are angles inside of a circle. They're connected to the center of the circle.}[/tex]

[tex]\textsf{Central Angles have measures determined where the 2 endpoints meet on the circumference.}[/tex]

[tex]\textsf{Central Angles are made of 2 line segments called \underline{Radiuses}. They start at the Center.}[/tex]

[tex]\large\underline{\textsf{What are Radiuses?}}[/tex]

[tex]\textsf{Radiuses are line segments connected from the center of the circle to the circumference.}[/tex]

[tex]\textsf{Hence, Central Angles are made up of 2 Radiuses.}[/tex]

Answer:

[tex]2 \sqrt{61} \: in[/tex]

Step-by-step explanation:

Use the Pythagorean theorem (assume, that the length of hypotenuse is x):

[tex] {x}^{2} = {10}^{2} + {12}^{2} = 100 + 144 = 244[/tex]

[tex]x > 0[/tex]

[tex]x = \sqrt{244} = 2 \sqrt{61} [/tex]

To determine if a system of linear equations has infinitely many solutions, you need to solve the system and check the resulting equations.

Here are the general steps:

If you obtain a valid solution for each variable, then the system has a unique solution.

If you have two or more variables and only obtain a solution for some of them, then the system has infinitely many solutions.

It's also important to note that if you have a system with fewer equations than variables, it may also have infinitely many solutions.

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y = -5x² + 5 is the equation of the parabola which has its vertex at (0, 5) and passes through the point (1, 0)

We know that the vertex of the parabola is (0, 5), which means that the equation for the parabola has the form:

y = a(x - 0)² + 5

where 'a' is a constant that determines the shape of the parabola. Since the parabola passes through the point (1, 0), we can substitute these values into the equation and solve for 'a':

0 = a(1 - 0)² + 5

0 = a + 5

a = -5

Therefore, the equation of the parabola is: y = -5x² + 5

This equation represents a parabola that opens downwards (since the coefficient of x² is negative), has a vertex at (0, 5), and passes through the point (1, 0).

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Lisa would need to serve 12 customers to attain the projected income if Daisy calls in sick that day

What is linear function ?

A linear function is a mathematical function that can be represented by a straight line on a graph. It has the form of:

y = mx + b

where m is the slope of the line, which determines how steeply the line rises or falls, and b is the y-intercept, which is the point where the line crosses the y-axis.

According to the question:
If Daisy calls in sick, then Lisa will be the only stylist at the salon, and all customers will go to her. Let's use x to represent the number of Lisa's customers. Then the income generated by Lisa's customers can be represented by the equation:

18x = projected income

We can solve for x by dividing both sides of the equation by 18:

x = projected income / 18

Substituting the given projected income of $216, we get:

x = 216 / 18 = 12

Therefore, Lisa would need to serve 12 customers to attain the projected income if Daisy calls in sick that day.

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Answer: 12

Step-by-step explanation: Just multiplied them

The missing angle measures 139 degrees.

what is triangle?

A triangle is a polygon that has three sides, three angles, and three vertices. It is a two-dimensional figure that is formed by connecting three non-collinear points. The three sides of a triangle can be of different lengths or the same length, and the angles can also vary in size. The sum of the three angles of a triangle always adds up to 180 degrees. Triangles can be classified based on their side lengths and angle measurements.

In a right triangle, the sum of the two acute angles is always equal to 90 degrees. Therefore, we can find the missing angle by subtracting the two given angles from 90 degrees.

Let's call the missing angle "x". Then we have:

x + 21 + 20 = 180 (the sum of angles in any triangle is 180 degrees)

x = 180 - 21 - 20

x = 139 degrees

Therefore, the missing angle measures 139 degrees.

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The given statement "the sampling distribution becomes approximately normal, for all statistics, if there is a large enough sample size" is True as it is proved by the central limit theorem.

The central limit theorem (CLT) states that for large enough sample sizes, the distribution of the sample means approximates a normal distribution regardless of the shape of the initial population distribution.

It is a statistical theory that clarifies how the mean of a random sample of independent observations drawn from a non-normal population converges in distribution to a normal population.

According to this theory, the sample size should be at least 30 for the sample mean to have an approximately normal distribution. The following are the fundamental assumptions of the central limit theorem:

Therefore, we can say that the sampling distribution becomes approximately normal, for all statistics, if there is a large enough sample size. The statement is true.

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The correct option for the large bag contains marbles:

The given question:

marbles in the bag:

40 blue marbles

8 green marbles

16 yellow marbles

21 white marbles

One marble is selected by Tyra.

Then, the correct option are-

A: There is a two to one chance that the marble she chooses will be yellow rather than green.

16 yellow marbles = 2* 8 green marbles

B: Compared to all the other colors combined, the stone she chooses is more likely to be blue.

40 blue marbles have the highest number.

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The complete question is-

A large bag contains the following marbles: •

40 blue marbles

8 green marbles

16 yellow marbles

21 white marbles

Tyra selects a marble from the bag at random. Based on the information, which statement is true?

A The marble she selects is twice as likely to be yellow as it is to be green.

B.The marble she selects is more likely to be blue than all the other colors combined.

C. The marble she selects is equally likely to be yellow or white

D. The marble she selects is three times as likely to be white as it is to be green.​

The domain of the function using the attached diagram is given by option A. { x / x = -5, -3, 1, 2, 6 }.

As per the attach diagram,

The mapping in the diagram represents the relation between input values and the output values.

Let us consider all input values are represented by variable 'x'.

And all output values are represented by variable 'y'.

All input values represents the domain of the function.

-5 relates to 4

-3 relates to -9

1 relates to 2

2 relates to -6

6 relates to 0

Here,

Domain of the function is ,

{ x / x = -5, -3, 1, 2, 6 }

Range of the function is ,

{ y / y = 4, -9, 2, -6,0 }

Therefore, the domain of the function is equal to option A. { x / x = -5, -3, 1, 2, 6 }.

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The given question is incomplete, I answer the question in general according to my knowledge:

A mapping diagram shows a relation, using arrows, between inputs and outputs for the following ordered pairs: (negative 6, 0), (2, 1), (negative 7, negative 4), (11, 2), (3, 2).

What is the domain of the relation?

Diagram is attached.

The two solutions to e² = 6x using Newton's method are x_left = 1.23151 and x_right = 2.157545.

To find the solutions of e² = 6x using Newton's Method, we will follow these steps:

Let f(x) = e² - 6x. Then we want to find the roots of f(x) = 0, which are the solutions to e² = 6x.

We need to choose a starting point x₀. A good choice is x₀ = 1, since it's a reasonable approximation to the solutions.

Apply Newton's Method to find the next approximation x₁:

x₁ = x₀ - f(x₀)/f'(x₀),

where;

Plugging in the values, we get:

x₁ = x₀ - (e² - 6x₀)/(-6) = x₀ + (e²/6 - x₀)

Use x₁ as the new starting point and repeat the process until we achieve the desired level of accuracy.

In this case, we want to find the solutions to six significant figures, so we will repeat the process until the difference between xₙ and xₙ₋₁ is less than 0.000005 (the sixth decimal place).

Using a calculator, we can apply Newton's Method iteratively to find the two solutions:

Iteration 1:

x₁ = x₀ - f(x₀) / f'(x₀)

x₁ = 1 - (e² - 6)/(-6) = 1.231509

Iteration 2:

x₂ = 1.231509 - (e² - 6)/(-6) = 1.463018

Iteration 3:

x₃ = 1.463018 - (e² - 6)/(-6) = 1.694527

Iteration 4:

x₄ = 1.694527 - (e² - 6)/(-6) = 1.926036

Iteration 5:

x₅ = 1.926036 - (e² - 6)/(-6) = 2.157545

The second solution to six significant figures is x_right = 2.157545

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Answer:

4t - 22

Step-by-step explanation:

To find:-

Answer:-

To find out the perimeter we can simply add all the side lengths of the given figure. Since the given figure here is a rectangle, we can add up all the four sides to find the perimeter.

The four sides given to us are t-6 , t-5 , t-6 and t-5 .

Hence the perimeter of the quadrilateral would be ,

Perimeter = t-5 + t-6 + t-5 + t-6

Perimeter = 4t - 10 - 12

Perimeter = 4t - 22

Hence the perimeter of the given figure us 4t - 22.

[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\multiput(0,0)(5,0){2}{\line(0,1){3}}\multiput(0,0)(0,3){2}{\line(1,0){5}}\put(0.03,0.02){\framebox(0.25,0.25)}\put(0.03,2.75){\framebox(0.25,0.25)}\put(4.74,2.75){\framebox(0.25,0.25)}\put(4.74,0.02){\framebox(0.25,0.25)}\multiput(2.1,-0.7)(0,4.2){2}{$\sf\large t-5$}\multiput(-1.4,1.4)(6.8,0){2}{$\sf\large t-6$}\put(-0.5,-0.4){\bf A}\put(-0.5,3.2){\bf D}\put(5.3,-0.4){\bf B}\put(5.3,3.2){\bf C}\end{picture} [/tex]

Figure1 shows pair of corresponding angles

Figure 2 and 6 shows pair of alternate exterior angles

Figure 5 shows pair of alternate interior angle

Figure3 shows pair of consecutive exterior angles

Figure 4 shows pair of consecutive interior angles

A set of angles on the outside of each of the two lines but on the opposing sides of the transversal are known as alternate exterior angles.

When a transversal intersects two parallel lines, the angles created within are equal to the alternative pairings of those pairs.

the angles created when two parallel lines cross any other line, whether they are corresponding or matching corners with the transversal.

In the given figures

Figure1 is  showing pair of the corresponding angles

Figure 2 and 6 showing pair of the alternate exterior angles

Figure 5 is showing pair of the alternate interior angle

Figure3 is showing pair of the consecutive exterior angles

Figure 4 is showing pair of the consecutive interior angles.

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The experiment by the Illinois Department of Employment Security found that cash bonuses can be an effective way to incentivize unemployed people to return to work.

The experiment conducted by the Illinois Department of Employment Security provides evidence on whether cash bonuses can speed up unemployed people's return to work. The results of the experiment suggest that offering cash bonuses can be an effective way to incentivize people to find work.

Specifically, the experiment found that the group of individuals who were offered a $500 cash bonus for finding a job within 11 weeks and holding it for at least 4 months were more likely to find employment than the control group. Additionally, the group that could tell potential employers that the state would pay the employer $500 for hiring them also had a higher likelihood of finding work compared to the control group.

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The given question is incomplete, the complete question is:

The Illinois Department of Employment Security designed an experiment to find out. The subjects were 10,065 people aged 20 to 54 who were filing claims for unemployment insurance. Some were offered $500 if they found a job within 11 weeks and held for at least 4 months. Others could tell potential employers that the state would pay the employer$500 for hiring them. A control group got neither kind of bonus. Will cash bonuses speed unemployed people's return to work?

The rate at which the water is being drained from the container is -12.56 cubic inches per second.

Given that the water is being drained from a container which has the shape of a right circular cone. The cone has a radius of 3 inches at the top and a height of 6 inches. When the water is 3 inches deep, the surface level is falling at a rate of 2 inches per second. We need to find the rate at which the water is being drained from the container.

Step 1: Calculate the volume of the cone. Consider the cone with the height h = 6 inches and radius of the base r = 3 inches. Let H be the height of the water and V be the volume of the water in the cone. Let V0 be the volume of the cone.

Cone Volume formula: $V=\frac{πr^{2}h}{3}$V0 = πr²h/3 = (3.14) (3²) (6)/3 = 56.52 cubic inches

Step 2: Find the rate at which the water level is falling. Let the rate at which the water level is falling be dh/dt. When the water is 3 inches deep, the surface level is falling at a rate of 2 inches per second. Thus, dh/dt = -2.

Step 3: Find the rate at which the water is being drained from the containerLet dv/dt be the rate at which the water is being drained from the container. To find this rate we need to differentiate the volume of water with respect to time V = (1/3)πr²H.H²dv/dt = (2/3)πr² dh/dtdv/dt = (2/3)π(3²)(-2) = -12.56 cubic inches per second.

Hence, the rate at which the water is being drained from the container is -12.56 cubic inches per second.

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As per the given fraction, Kayla has 7/8 pound of flour left in total.

Let's start by looking at the amount of white flour Kayla has. She has 7/8 pounds of white flour, and she uses 3/8 pounds in the recipe. To figure out how much white flour she has left, we need to subtract the amount she used from the amount she had to start with:

7/8 - 3/8 = 4/8

So Kayla has 4/8 pounds of white flour left. But we can simplify this fraction by dividing both the numerator and the denominator by 4:

4/8 ÷ 4/4 = 1/2

So Kayla has 1/2 pound of white flour left.

Now let's look at the wheat flour. Kayla has 4/8 pounds of wheat flour, and she uses 1/8 pound in the recipe. To figure out how much wheat flour she has left, we need to subtract the amount she used from the amount she had to start with:

4/8 - 1/8 = 3/8

So Kayla has 3/8 pound of wheat flour left.

To find out how much flour Kayla has left in total, we need to add the amount of white flour she has left to the amount of wheat flour she has left:

1/2 + 3/8 = 4/8 + 3/8 = 7/8

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The two numbers that fit the description are 27 and 99.

There are two numbers that fit this description. To find them, we can solve the equation:

Difference = Number - Number’s Reverse

Difference = 72

Number - Reverse = 72

Let’s call the two-digit number “x” and its reverse “y”. So, we can rewrite the equation as:

x - y = 72

Now, we can solve the equation using algebraic methods. First, add “y” to both sides of the equation:

x - y + y = 72 + y

x = 72 + y

Next, let’s solve for “y” by subtracting “72” from both sides of the equation:

x - 72 = 72 + y - 72

x - 72 = y

Therefore, we can rewrite the equation as:

x - 72 = y

Now, we can solve for “x” and “y” by plugging in possible values for “x” and “y” and seeing which ones work. Since we’re dealing with two-digit numbers, let’s start with numbers between 10 and 99.

First, let’s try x = 10 and y = 82.

10 - 82 = -72

This doesn’t work, since the difference cannot be negative.

Next, let’s try x = 15 and y = 87.

15 - 87 = -72

Again, this doesn’t work.

Finally, let’s try x = 27 and y = 99.

27 - 99 = -72

This works! So, the two numbers that fit the description are 27 and 99.

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When the polynomial p(x)=-x^5-2x^3+4x-3, then the value of p(-1) is 3

The Remainder Theorem is a fundamental concept in algebra that relates the value of a polynomial at a certain point to the remainder of the polynomial's division by a linear factor.

The remainder theorem states that when a polynomial p(x) is divided by (x - a), the remainder is equal to p(a).

In this case, we are asked to find p(-1) when p(x) = -x^5 - 2x^3 + 4x - 3.

To use the remainder theorem, we need to divide p(x) by (x - (-1)), which is the same as (x + 1).

We can perform polynomial long division to find the quotient and remainder

The remainder is -x + 2, which means that p(-1) = -(-1) + 2 = 3.

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Parasubstitution is a type of electrophilic aromatic substitution in which the attacking electrophile is substituted into the para position of the aromatic compound. The stability of the carbocation formed during this process is influenced by the substituents present on the aromatic ring.intermediate.

Reason of effecting on parasubstitution:

This is due to the fact that these substituents provide electron density to the aromatic ring, which stabilizes the carbocation by delocalizing the positive charge throughout the ring.Electron withdrawing substituents (such as -NO2, -CN, -COR, -COOH, -SO3H, etc.) have a negative impact on the stability of the carbocation intermediate. T

  This is due to the fact that these substituents withdraw electron density from the aromatic ring, making the carbocation intermediate less stable.The substituent effect on carbocation stability in parasubstitution can be represented by the Hammett equation, which relates the substituent effect to the electronic properties of the substituent.

The equation is given by

:log (kX/kH) = ρσ

where kX and kH are the rate constants for the reaction with and without the substituent, respectively

, ρ is the sensitivity constant, and

σ is the substituent constant.

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Answer:

area=188

Step-by-step explanation:

12×14=168 for the area of the rectangle

2×10=20

20÷2=10 for the area of triangle

168+10+10=188

area=188