the incomes in a certain larger population of college teachers have a normal distribution with mean of $60,000 and standard deviation of $5,000. four teachers are selected at random from this population to serve on a salary review committee. what is the probability that their average salary exceeds $65,000.

Answers

Answer 1

If the incomes in a certain larger population of college teachers have a normal distribution with mean of $60,000 and standard deviation of $5,000.the probability that their average salary exceeds $65,000 is 0.0228.

What is probability?

Probability is the tendency or likelihood that an event will happen.

First step is to find the standard deviation

Standard deviation= $5,000/√4

Standard deviation= $5,000/2

Standard deviation= $2,500

Second step is to find the z -score

Z= 65,000 - 60,000/2500

Z= 5,000/2500

Z= 2

Now let find the  pvalue of 2

pvalue of 2 = 0.0228

Therefore the probability is 0.0228.

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Related Questions

Polygon B is a scaled copy of Polygon A using
a scale
factor of 5.
How many
times as large is the area of Polygon B
compared to the area Polygon A?

Answers

Answer:

25 times larger

Step-by-step explanation:

given a scale factor of 5 from A → B

then the scale factor of the area is 5² = 25

area of B is 25 times larger than the area of A

What is the median of the distribution 34 22 13?

Answers

The median of the distribution 34 22 13 is 22.

To find the median of a set of scores, you first need to arrange the scores in numerical order. The median is the middle score in the set. If there is an odd number of scores, then the median is the middle score. If there is an even number of scores, then the median is the average of the two middle scores.

In this case, the scores are 13, 22, and 34.

After arranging the scores in numerical order, we have 13, 22, and 34.

There are three scores in this set, so the median is the middle score, which is 22.

The median of the set is 22.

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What is linear equation answer?

Answers

Linear equations are one-degree equations. It is a straight-line equation. A linear equation with parameters a and b equal to zero has the conventional form ax + by + c = 0.

How do one express the standard form of a linear equation?

A linear equation has the following standard form: ax + by + c = 0.

Here, variables x and y and constants a, b, and c are used.

Also, a ≠ 0, and b ≠ 0.

For linear equations, the slope-intercept formula is: y=mx+b

Where m stands for the line's slope and b represents the y-intercept.

The three types of linear equations are point-slope, slope-intercept, and standard form.

When an algebraic equation is graphed, it always produces a straight line since each term has an exponent of 1 or 0. This is known as linear equations.

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Three sisters have were born in 3 consecutive years. The total of their ages is 30. What is the oldest sibling's age?

Answers

The oldest child is a 11-year-old boy.

What exactly is a sequential number?

Three sisters have were born in 3 consecutive years. The total of their ages is 30.

Sequential numbers are those that follow one another continually, from lowest to biggest.

Here, assume that the youngest sibling is x years old.

Middle sibling's age will be (x+1) years old.

the oldest sibling's age is (x+2) years.

According to the inquiry,

x + (x+1) + (x+2) = 30

3x + 3 = 30

3x = 30-3

3x = 27

x = 27 / 3

x=  9

The oldest child is therefore (x + 2) years old, or 11 years old.

x+2 = 9+2 =11

The oldest child is a 11-year-old boy.

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What has 4 sides and 2 sets of parallel lines?

Answers

Answer:

A parallelogram

Step-by-step explanation:

A parallelogram is a shape with four sides and two sets of parallel lines. A common example of a parallelogram is a square.

Why can't you solve 3x 1?

Answers

We can't solve 3x + 1 because eventually reach 1 if you keep performing this operation, regardless of what odd number you started with.

Describe odd numbers.

Even numbers are ones that can be divided into two equal parts, but odd numbers cannot be divided into two equal parts. The numbers 3, 5, 7, 9, 11, 13, and 15 are examples of odd numbers. Even numbers include 2, 4, 6, 8, 10, 12, and so on. Odd numbers are those that cannot be evenly divided by two. It cannot be evenly split into two different integers. An odd number will leave a leftover when divided by two. 1, 3, 5, 7, and other odd numbers are instances. The idea of odd numbers is identical to that of even numbers.

Given

Three times, then add one.

Divide the largest power of 2 from the resultant even number to obtain the new odd number T. (x).

Do you eventually reach 1 if you keep performing this operation, regardless of what odd number you started with? This issue has not yet been resolved, to put it simply.

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Is AAA congruence possible?

Answers

Angle-Angle-Angle (AAA) does not work because it can produce similar but not congruent triangles.

There are a few conditions for AAA:

The sides of the triangles may or may not be equal. For two triangles with the same respective angles, the congruence will hold true only if those triangles are similar.

"AAA" is when we know all three angles of a triangle, but no sides. AAA triangles are impossible to solve further since there is nothing to show us the size.

If two angles and any side of one triangle are congruent to two angles and any side of another triangle, then the triangles are congruent.

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What are whole numbers explain with example?

Answers

Answer:

Whole numbers are positive numbers including zero that dont include fractions or intergers

Step-by-step explanation:

examples of this are 73, 68, 27

What type of function has an asymptote?

Answers

A function can have an asymptote if it approaches a horizontal or vertical line but never touches it. There are several types of functions that can have asymptotes, including rational functions, exponential functions, and logarithmic functions.

For example, a rational function is a function that can be written in the form of a ratio of two polynomials. These functions can have horizontal asymptotes if the degree of the denominator is greater than the degree of the numerator, and they can have vertical asymptotes if the denominator has a factor that is not present in the numerator.

Exponential functions can have horizontal asymptotes if the base of the exponent is less than 1, and they can have vertical asymptotes if the base of the exponent is greater than 1.

Logarithmic functions can have horizontal asymptotes if the base of the logarithm is less than 1, and they can have vertical asymptotes if the base of the logarithm is greater than 1.

It's also possible for a function to have both horizontal and vertical asymptotes, depending on its form.

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If the exponent's base is less than 1, an exponential function may have a horizontal asymptote; if it is greater, a vertical asymptote may occur.

If the base of the logarithm is less than 1, a logarithmic function may have a horizontal asymptote, and if the base is greater, a vertical asymptote.

Does the triangle inequality theorem apply to all equilateral triangles?

Answers

Yes, triangle inequality theorem apply to all equilateral triangles.

Describe Triangle inequality theorem:

The triangle inequality theorem explains the relation between a triangle's three sides. This theorem states that for any triangle, the sum of the lengths of the first two sides is always greater than the length of the third side. In other terms, this theorem states that a straight line is always the shortest distance between any two places.

So Triangle inequality theorem is not only valid for all equilateral traingles but it is valid for all traingles.

A Triangle is only formed is if follows Triangle inequality theorem so every equilateral triangle needs to follow this theorem.

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The Santos family owns 30 acres of land. Of the 30 acres, only 20 acres can be farmed. What percent of the land is available for farming?(1 point)

Answers

Answer:66.67% to the nearest whole number is 67%

Step-by-step explanation:

The total number of acres available are 30

and only 20 acres of land can be farmed

20 acres out of 30 acres is available for farming

20/30 x 100%

To do with the calculator

20 ÷30 x 100=66.67% then add the percent sign

If you cut away a triangle with an area of 59 cm from a certain square, the area
of the remaining shape will be 85 cm². Find the length of the side of the square.

Answers

The length of the side of the square is 12 cm.

Given that, a triangle with an area of 59 cm from a certain square, the area of the remaining shape will be 85 cm².

What is area?

Area is the amount of space occupied by a two-dimensional figure. In other words, it is the quantity that measures the number of unit squares that cover the surface of a closed figure. The standard unit of area is square units which is generally represented as square inches, square feet, etc.

We know that, the area of a square is a².

Here, total area = Area of a square + The area of the remaining shape

= 59+85

= 144 cm²

So, a²= 144 cm²

⇒ a =12 cm

Therefore, the length of the side of the square is 12 cm.

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2 balloons and 3 cakes = £16
4 balloons and 4 cakes = £24

Answers

Answer:

1 balloon is = £2 and 1 cake is = £4

Step-by-step explanation:

this is true because 2 balloons = £4

and 3 cakes = £12 so 4 + 12 = 16 and also

4 balloons = £8

and 4 cakes = £16 so 8 + 16 = £24

this is one of the possible answers

Answer:

A cake is £3.50

A Balloon is £2.75

Step-by-step explanation:

Let b be balloons and c be cake

2 balloons and 3 cakes = £16 = 2b + 3c = 16

4 balloons and 4 cakes = £24 = 4b + 4c = 25

First times -2 to the first equation

-4b - 6c = -32

4b + 4c = 25

Now let's find c first by adding the two equations together.

-2c = -7

c = £3.50

Now put 3.50 back in the c

4b + 4(3.50) = 25

4b + 14 = 25

4b = 11

b = £2.75

How many solutions does a system of 3 equations have?

Answers

A system of 3 equations can have 0, 1, 2, or infinitely many solutions.

It is possible for a system of 3 equations to have no solutions if the equations are incompatible, meaning that there is no combination of values for the variables that can satisfy all of the equations simultaneously. It is possible for a system of 3 equations to have exactly one solution if the equations are dependent, meaning that one of the equations can be derived from the other two. It is possible for a system of 3 equations to have exactly two solutions if the equations are independent, meaning that the equations are not related to each other and cannot be derived from each other. Finally, it is possible for a system of 3 equations to have infinitely many solutions if the equations are consistent and the variables are linearly dependent.

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The um of two number i 4. The larger number i 12 more than three time the maller number. What are the number?

Answers

The larger number is 8 and the smaller number is -4.

Let us assume that the larger number is x and the smaller number is y.

Now according to the question:

The sum of two numbers is 4, so

x+y= 4....(1)

A two-variable linear equation has two variables and can be represented as: ax+by=c

Here x and y are the variables, a and b are the respective cofficients of the variables and c is a constant term.

And the larger number is 12 more than three times the smaller number.

So

x=y+12 ...(2)

By equation (1) and (2)

y+12+y=4

2y= 4-12=-8

y = -4

Now put the value of y in equation (2)

x= y+12=-4+12=8

So the larger number is 8 and the smaller number is -4.

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4000×20÷408-44
( what answer its it​

Answers

The numeric value of the expression 4000×20÷408-44 is given as follows:

4000×20÷408-44 = 152.08.

How to obtain the numeric value of the expression?

The expression for this problem is defined as follows:

4000×20÷408-44

We have a multiplication, a division and a subtraction operation, hence the precedence of the operations is given as follows:

Multiplication. (as multiplication and division have higher precedence over subtraction, and multiplication appears first).Division.Subtraction.

Then the multiplication is given as follows:

4000×20 = 80,000.

The division is given as follows:

80000/408 = 196.08.

Finally, the subtraction is calculated as follows:

196.08 - 44 = 152.08.

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What is current i formula?

Answers

The formula of current I is I=V/R.

In the field of physics, current can be described as the rate that shows the intensity of electrons that are flowing from one place to another.

The current is the measure of the potential difference from which the current moves forward when resistance is also a factor that stops it. Electric current is directly proportional to the potential difference applied and is inversely proportional to the resistance in the object in which the electric current is flowing.

Based on this fact, the formula for current, which is represented by the letter I is   I=V/R, here I is the current, V is the potential difference and R is the resistance.

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evaluate f divided by 1/4 for f = 2/9

Answers

Answer:

8/9

Step-by-step explanation:

2/9 divided by 1/4 is 8/9

please help its for finals

Answers

The numerical value of x and the length of side ST are 2 and 6 respectively.

What is the numerical value of x and the length of ST?

An equilateral triangle is simply a triangle with all three sides having the same length.

Given that;

RS = 2x + 2ST = 3xTR = 5x - 4

First, we determine the value of x.

Since all three sides are equal;

RS = TR

2x + 2 = 5x - 4

Solve for x

5x - 2x = 2 + 4

3x = 6

x = 6/3

x = 2

Now, for side ST.

ST = 3x

Plug in x=2

ST = 3( 2 )

ST = 6

Therefore, the value of x is 2 and side length of ST is 6.

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What is the median of 7 6 4 8 2 5 11?

Answers

To find the median of a set of numbers, you first need to put the numbers in order from smallest to largest. Then, if there is an odd number of values, the median is the middle value. If there is an even number of values, the median is the average of the two middle values.

In this case, the set of numbers is already in order: [2, 4, 5, 6, 7, 8, 11]. There are 7 values, so the median is the middle value, which is 6.

So, the median of the set {7, 6, 4, 8, 2, 5, 11} is 6.

What in math is the median?

the middle number, which is obtained by sorting all the data points and choosing the center one (or if there are two middle numbers, taking the mean of those two numbers). Example: Because the number 4 is in the middle when the numbers are ordered (1, 4, 7), it is the median of 4, 1, and 7.

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What is the median of 4 2 7 3 10 9 13?

Answers

Answer: 3

Step-by-step explanation: The median is three (3) because its the middle number

please help a mate out aye? 80 points!! :D
Simplify the expression 3x(2x – 7).

(A)15x
(B)6x2 – 21
(C)6x2 – 21x
(D)6x – 21

Answers

Answer:

Hey no prob!

We take 3x(2x-7) and we distribute the 3x to both of the terms inside

3x times 2x is 6x^2

and

3x times -7 is -21x

the final answer would be C

6x^2-21x

Answer:

[tex] \sf \: c) \: 6 {x}^{2} - 21x[/tex]

Step-by-step explanation:

Given expression,

→ 3x(2x - 7)

Simplifying the expression,

→ 3x(2x - 7)

→ 3x(2x) + 3x(-7)

→ (3 × 2)x² + (3 × -7)x

→ (6)x² + (-21)x

→ 6x² - 21x

Hence, option (c) is correct.

What do you say about Y 0 and y =- 5?

Answers

The pair of equations y=0 and y=−5 has no solution.

Since the provided variable y might take on a variety of values, the pair of equations y=0 and y=5 cannot have a solution.

A two-variable linear equation is one with the formula ax+by+c, where a, b, and c are all real numbers and a, b is not equal to zero. In a set of two linear equations in two variables, we deal with two such equations.Such equations have a point on their representational line as the solution. A two-sided statement with the same sign on both sides is called an equation.

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Is the mean of the following data is 14.7 find the values of P and Q?

Answers

The values of p and q are 11 and 3 respectively.

Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers. Simply said, the mean is the average of the values in the given collection. It indicates that values in a certain data collection are distributed equally.

Given that,

∑f = 40

=> 26+p+q = 40

=>p+q=40-26

=> p+q = 14 .......................(i)

∵ x bar = ∑xf/∑f

=>14.7 = 408+9p+27p / 40 (since, x bar = 14.7)

=>588 = 408+9p+27p

=>588 - 408= 9(p+3p)

=>180= 9(p+3p)

=>p+3q=20......................(ii)

Solving equations (i) and (ii)

=>p+3q -(p+q)=20-14

=>p+3q-p-q=6

=>2q=6

=>q=3

Substituting this value in equation (ii)

∴p+3=14 => p = 11

Hence, the values of p and q are 11 and 3 respectively.

(Refer to the image attached for the missing data)

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ANSWER ASAP!! TY :)
Lyme disease is an infection caused by bacteria. A test for Lyme disease may be affected by other medications and medical conditions. The testing results are summarized in the table.



Tested positive Tested negative Row Totals

Has Lyme disease 53% 17% 70%

Does not have Lyme disease 12% 18% 30%

Column Totals 65% 35% 100%



What percentage of all patients who took the test had a false positive result?

12%

17%

18%

35%

Answers

The percentage of all patients who took the test and had a false positive result will be 35%. Then the correct option is D.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.

Lyme illness is a disease brought about by microscopic organisms. A test for Lyme infection might be impacted by different prescriptions and ailments. The testing results are summed up in the table.

                                      Tested positive      Tested negative     Row Totals

Has Lyme disease                  53%                         17%                     70%

Doesnt have Lyme disease    12%                         18%                     30%

Column Totals                         65%                        35%                    100%

The level of all patients who stepped through the examination and had a misleading positive outcome will be 35%. Then, at that point, the right choice is D.

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What will be the appearance of the graph when the degree is even and the leading coefficient is positive?

Answers

The graph of the equation will be a parabola that opens upwards, starting at the y-axis and increasing in value as x increases. The vertex of the parabola will be the lowest point on the graph, and the parabola will be symmetrical about the line of symmetry.

When the degree of an equation is even and the leading coefficient is positive, the graph of the equation will be a parabola. This parabola will open upwards, meaning that it will start at the y-axis and increase in value as x increases. The vertex of the parabola will be the lowest point on the graph, and this vertex will always be located to the right of the y-axis. Additionally, the parabola will be symmetrical about the line of symmetry, which is the vertical line that passes through the vertex. To further illustrate, consider the equation y = 4x^2 + 5x + 1. In this equation, the degree is even (2) and the leading coefficient is positive (4). Therefore, the graph of this equation will be a parabola that opens upwards and has its vertex to the right of the y-axis. Additionally, the parabola will be symmetrical about the line of symmetry, which is the vertical line that passes through the vertex. The vertex of the parabola will have coordinates (2.5, -2.625), and the parabola will increase in value as x increases from this point.

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Find the circumference of the circle (use 3. 14 for pi). Show your work. Round to the nearest tenth.

Answers

The circumference of the circle is C = 144.44 yd .

From the given figure :

we observe that the radius r = 23 yd

we know that ,

What is circumference of circle ?

Circumference is the distance around the perimeter of a circle. It is calculated by multiplying the distance across the center .

A circle's perimeter is known as its circumference.

Formula :

C = 2πr

= 2 * 3.14 * 23

= 46 * 3.14

= 46 * 314 / 100

= 14444 / 100

= 144.44 yd

Hence the circumference of the circle is 144.44 yd .

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Full question :

is in the image uploaded

How do you find the vertical and horizontal asymptotes of a function using limits?

Answers

Consider the behavior of the function when x approaches the value of the vertical asymptote from the left and from the right in order to locate the vertical asymptotes of a function using limits. Consider the behavior of the function when x grows very big in order to determine the horizontal asymptotes of a function using limits (in either the positive or negative direction).Similary, To find the horizontal asymptotes of a function using limits, consider the behavior of the function as x becomes very large (in either the positive or negative direction). If the y-values of the function approach a fixed value as x becomes very large, then that value is the horizontal asymptote of the function.

what is an Asymptote?

An asymtote is a line being approached by a curve but never touching the curve at any finite distance.It is a line that the graph approaches as either x or y in positive or negative infinity.

What is vertical asymptote?

A vertical line that directs the function's graph but is not actually a part of it is called a vertical asymptote. Because it appears at an x-value outside of the function's scope, the graph can never cross it. There may be several vertical asymptotes for a given function.

Consider the behavior of the function when x approaches the value of the vertical asymptote from the left and from the right in order to identify the vertical asymptotes of a function using limits. The vertical asymptote is at that value of x if the function approaches positive infinity as x approaches the asymptote from the left and negative infinity as x approaches the asymptote from the right. Consider the function f(x) = 1/x as an illustration. We may take into account how the function behaves as x approaches 0 from the left and from the right in order to determine the vertical asymptotes of this function using limits.The y-values of the function become closer to negative infinity as x moves toward 0 from the left (negative x-values). The y-values of the function get closer to positive infinity as x gets closer to 0 from the right (positive x-values). As a result, we may infer that the function's vertical asymptote lies at x = 0.

Similary, Consider the behavior of the function when x grows very big in order to determine the horizontal asymptotes of a function using limits (in either the positive or negative direction). The horizontal asymptote of the function is the point at which the y-values of the function begin to approach a fixed value when x increases significantly.

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What are the solutions of 3x² 6x 2 0?

Answers

x=3+√15/3 and x=3-√15/3 are the solutions of 3x²-6x-2=0.

What is quadratic equation?

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

The given quadratic equation is 3x²-6x-2=0

Use the quadratic formula to find the solutions.

x=-b±√b²-4ac/2a

a=3, b=-6 and c=-2.

Now plug in these values in quadratic formula to find the solutions.

x=6±√-6²-4(3)(-2)/2(3)

x=6±√36+24/6

x=6±√60/6

x=3±√15/3

Hence, x=3+√15/3 and x=3-√15/3 are  the solutions of 3x²-6x-2=0.

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What is the perpendicular slope to the equation y = –34 + 3, through the point (1, -1)

Answers

Answer:

Step-by-step explanation:

I'm going to guess that the equation is really  

y = -3x +3    not   y = -34 + 3

we don't really need the point information to solve this,  we know that a perpendicular line has an inverse slope with a sign change

so we know the slope of the perpendicular line is

[tex]\frac{1}{3}[/tex]

Other Questions
What is the relationship between a scalene triangle andthe location of its centroid? Explain.O A. The centroid will always be inside the scalenetriangle, since the centroid is always insideany type of triangle.OOOB. The centroid will always be outside thescalene triangle, since the centroid is alwaysoutside any type of triangle.C.The centroid will always be on the scalenetriangle, since the centroid is always on atriangle with no congruent side lengths.D.The centroid will be inside, on, or outside thescalene triangle, depending on whether it isacute, right, or obtuse, respectively. Thenumber of congruent sides does not affectthe location of the centroid. Which system of equations can be used to find the roots of the equation 4x 5 12x? What did Gilgamesh eventually realize at the end of the story? What does Old Major symbolize in Animal Farm? Two friends, Andrew and Liz, are playing a game using this spinner. If the spinner lands on region 1, Andrew wins. If it lands on region 2, Liz wins. If it lands on region 3, nobody wins. Is this a fair game? on which of the following is there a tax incentive in the united states? (i) health insurance purchased through employers (ii) employer contributions for life insurance (iii) rental value on owner-occupied housing (iv) your mortgage Who can you list as a dependent? In The Distinguished Gentleman, Eddie Murphy plays a con man with a similar nameas a long-running Congressman. When the politician dies, Murphy runs for officeusing the politician's name: Jeff Johnson. He's careful not to go on camera but usestaglines in commercials such as "Johnson: The name you trust." He eventuallyachieves a slim victory. How does Murphy's character use voter ignorance to win theelection? (Hint: The answer is only slightly different than the way most politicians usevoter ignorance to win elections.) Is physics science hard? Data collected on the discharge of the Colorado River and the speed are given in the table:Discharge (ft3) Speed1.3 2.32.2 0.995.8 3.511 512 1614 2216 2721 1449 3351 35What is the value of the correlation coefficient and its interpretation? 0.76; There is a strong, positive association between discharge and speed. 0.87; There is a strong, positive association between discharge and speed. 0.76; There is a strong, negative association between discharge and speed. 0.87; There is a strong, negative association between discharge and speed. A box is dragged without acceleration in a straight-line path across a level surface by a force of 100 n. What is the frictional force between the box and the surface?. Fill in the blanks to complete the proofs What is the difference between Scrum kanban and XP? the sales manager at cloud kicks wants to set up a business process where opportunity discounts over 30% need to be approved by the vp of sales. any discounts above 10% need to be approved by the user's manager. the administrator has been tasked with creating an approval process. which are two considerations the administrator needs to review before setting up this approval process? A plumb bob (a mass m hanging on a string) is deflected from the vertical by an angle due to a massive mountain.A) Make an estimate of the mass of Mt. Everest, assuming it has the shape of a cone 3910m high and base of diameter 3910m Assume its mass per unit volume is3000kg/m3.B)Estimate the angle of the plumb bob if it is 5.20km rom the center of Mt. Everest. megan wants to test her assumption on the amount of sleep students are getting. she decides to focus her efforts on examining if students are getting less than eight hours of sleep. what should megan state for the null hypothesis and alternative hypothesis? You are a historian studying the development of the American West. Write an essay exlaining how the Americans settled the West in the late 1800s and how the region changed as a result. Use specific examples to support your main idea. How do you find the duplicate number on a given integer array in Python? Alexa is trying to pick out an outfit for the first day of school. She can choose from 8 pairs of pants, 6 t-shirts, 6 sweaters or hoodies, and 2 pairs of shoes. How many different outfits does Alexa have to choose from? How did the Supreme Court justify the Plessy v. Ferguson decision?