Please help me I need this

The height of the embankment will be 1.125. As the embankment is in cylinder shape shown in figure.

The shape of the well will be cylindrical as shown in the figure below in the image section.

Given that :

Depth (h1) of well = 14m

Radius (r1) of the circular end of well = 3/2 m Width of embankment = 4 m

From the figure, it can be observed that our embankment will be in a cylindrical shape having outer radius, (r2) = 4 + 3/2 = 11/2m

Let the height of the embankment be h2 .

Volume of soil dug from well = Volume of earth used to form the embankment

⇒ π × r1² ×h1 = π × (r2-r1)² ×h2

⇒ π × (3/2)² × 14 = π ×[(11/2)² - (3/2)² × h2]

⇒ 9/4 × 14 = 112/4 × h2

⇒ h2 = 9/8

⇒ h2 = 1.115 m

Therefore the height of the embankment will be 1.125m.

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Psychologists have raised concerns about the accuracy and validity of ____ personality tests, as they are not standardized. This means that the same test administered to two different people can yield different results, making it difficult to interpret. Moreover, results may be inconsistent, meaning the same test administered at different times could produce different results. This lack of consistency can lead to inaccurate interpretations and can render the tests less useful. Furthermore, there is a lack of standardization of criteria and methodologies used to evaluate personality tests, which could lead to misinterpretations of results.
In order to address these issues, it is important to use standardized personality tests, which are tested and validated to ensure consistent and accurate results. This will ensure that the tests yield consistent results and can be interpreted accurately.

Additionally, researchers must adhere to established guidelines and criteria to ensure that the results are reliable and valid. This will enable professionals to confidently use the tests and make accurate interpretations of the results.

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Be aware that the other claims are untrue as 80 degrees is the angle B'OA and Triangles ABO and A'B'O are similar triangles are true .

A closed triangle is a two-dimensional plane shape with three angles and three straight sides. Three non-collinear points are connected with straight line segments to create one of the fundamental shapes in geometry. The lengths of the sides can vary depending on the type of triangle, but the sum of the interior angles of a triangle is always 180 degrees. Triangles with all three sides equal, such as equilateral triangles, isosceles triangles, and scalene triangles, are examples of frequent triangle types (where no sides are equal).

given

According to the diagram, the following claims are accurate:

80 degrees is the angle B'OA.

Triangles ABO and A'B'O are similar triangles.

Angle A'B'O and angle ABO are equivalent.

Line segment AB and line segment A'B' are congruent.

Be aware that the other claims are untrue as 80 degrees is the angle B'OA and Triangles ABO and A'B'O are similar triangles are true .

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The work required to pump all the water over the top edge of the cylindrical tank is approximately 83,500 kJ.

To calculate the work required to pump all the water over the top edge of the cylindrical tank, we need to determine the volume of the water in the tank and the force required to lift it to the top edge.

The volume of water in the tank can be found by multiplying the cross-sectional area of the tank by the depth of the water. Since the tank is cylindrical, the cross-sectional area is given by πr^2, where r is the radius of the tank. Therefore, the volume of water in the tank is:

V = πr^2h = π(6m)^2(5m) = 540π m^3

To lift the water to the top edge of the tank, we need to overcome the force of gravity acting on the water. The force required to lift an object of mass m against gravity is given by F = mg, where g is the acceleration due to gravity (9.81 m/s^2).

The mass of the water in the tank can be found by multiplying its volume by its density. The density of water is approximately 1000 kg/m^3. Therefore, the mass of the water in the tank is:

m = ρV = (1000 kg/m^3)(540π m^3) = 1.7 x 10^6 kg

The force required to lift the water to the top edge of the tank is:

F = mg = (1.7 x 10^6 kg)(9.81 m/s^2) = 16.7 x 10^6 N

To find the work required to lift the water, we need to multiply the force by the distance over which it acts. The distance is equal to the height of the water in the tank, which is 5 m.

Therefore, the work required to pump all the water over the top edge of the tank is:

W = Fd = (16.7 x 10^6 N)(5 m) = 83.5 x 10^6 J

Rounding to the nearest kilojoule, the work required is approximately 83,500 kJ.


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The graph for the linear equation y=24x, will be a straight line having coordinate (1,24) i.e. B.

What is a linear equation, exactly?

A linear equation is a first-degree algebraic equation in which each term is either a constant or the product of a constant and a single variable (degree 1). A linear equation is stated as y = mx + b, where y is the dependent variable, x is the independent variable, m is the line's slope, and b= y-intercept .

A linear equation's graph is a straight line. The line's slope decides how steep it is, and the y-intercept indicates where the line crosses the y-axis. Linear equations are used to model relationships between variables that are directly proportional to each other, such as distance and time, or cost and quantity.

Now,

Given equation is y=24x

then for  x,    y is

              1,    24

              2,   48

              3,    72

              4,     96

Hence, the graph will be as represented in option 2.

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Answer:

The formula for the volume of a cylinder is V = πr²h, where r is the radius and h is the height.

Given the diameter of both the cylinder and the cone is 8 inches, the radius is 8/2 = 4 inches.

The volume of the cylinder is Vcyl = π(4)²(3) = 48π cubic inches.

The formula for the volume of a cone is V = (1/3)πr²h.

The volume of the cone is Vcone = (1/3)π(4)²(18) = 96π/3 = 32π cubic inches.

Therefore, the relationship between the volume of the cylinder and the cone is that the volume of the cone is exactly two-thirds of the volume of the cylinder.

We can see this by dividing the volume of the cylinder by the volume of the cone:

Vcyl/Vcone = (48π) / (32π) = 3/2

So, the volume of the cylinder is 1.5 times greater than the volume of the cone.

Answer:

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Step-by-step explanation:

The Recursive expression f(n), that shows the population at the beginning of the year n, as a function of its population the preceding year is

The population at the beginning of the year is given as 10 000

Let P(n) be the population at the beginning of the year n,

where

n is a positive integer.

We can express P(n) in terms of P(n-1) as follows:

P(n) = P(n - 1) + 0.03P(n - 1) - 0.02P(n - 1) + 0.05P(n - 1)

= (1 + 0.03 - 0.02 + 0.05)P(n - 1)

 = 1.06P(n - 1)

Therefore, the recursive expression that shows the population at the beginning of the year n as a function of its population the preceding year is:

f(n) = 1.06f(n - 1)

This recursive formula is derived from the fact that each year,

Resulting in a total increase of 6% per year.

The formula expresses this increase as a multiplication of the previous year's population by a factor of 1.06, resulting in the population at the beginning of the current year.

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Answer:

The area of given polygon is 44 square units from the given graph.

What is Polygon ?

A polygon is a 2-dimensional geometric shape that is formed by joining a finite number of straight line segments to form a closed shape.

The area of each triangle can be found by using the formula:

Area = (base * height)/2

Triangle 1: Base = 4 units, Height = 5 units

Area of Triangle 1 = (4*5)/2 = 10 square units

Triangle 2: Base = 8 units, Height = 3 units

Area of Triangle 2 = (8*3)/2 = 12 square units

The area of the trapezoid can be found by using the formula:

Area = (Sum of parallel sides * Height)/2

Trapezoid: Height = 4 units, Parallel side 1 = 3 units, Parallel side 2 = 7 units

Area of Trapezoid = ((3+7)*4)/2 = 20 square units

Therefore, the total area of the polygon is:

Total Area = Area of Triangle 1 + Area of Triangle 2 + Area of Trapezoid

Total Area = 10 + 14 + 20 = 44 square units

Hence, The area of given polygon is 44 square units from the given graph.

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Therefore, liquid water is considered to be unstable on Mars due to the cold temperatures, low atmospheric pressure, and the UV radiation. All of these environmental factors make it difficult for liquid water to persist.

Liquid water is unstable on Mars due to its cold, dry environment. Because the atmospheric pressure is too low to hold liquid water, the water on Mars quickly evaporates, sublimates, and/or is broken down by the ultraviolet radiation in the atmosphere.
The average temperature of the surface of Mars is −63 °C, which is well below the freezing point of water. Because of this, liquid water cannot exist on the surface of Mars. When temperatures are slightly higher, water can exist as a liquid, but it cannot stay in this state for very long.
The atmosphere on Mars also does not contain enough pressure to sustain liquid water. Even when water vapor is present, it will quickly evaporate in the low-pressure environment. Additionally, the UV radiation in the Martian atmosphere will break down water molecules quickly.

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Andace needs to score at least 98 on her fifth exam to have an average of 90 or better for the five exams.

To find out what score Andace needs to get on the fifth exam, we can use the formula for the average (also known as the mean):

Average = (sum of all scores) / (number of scores)

We know that Andace needs an average of 90 or better for the five exams. Therefore, the sum of all five scores must be at least 450 (90 multiplied by 5).

The sum of Andace's first four scores is:

96 + 84 + 95 + 82 = 357

To get an average of 90 or better for the five exams, Andace needs to get a total of:

450 - 357 = 93

on her fifth exam.

Since she has already taken four exams and the maximum score she can get on her fifth exam is 100, we can subtract her first four scores from 93 to find out what she needs to score on her fifth exam:

93 - 96 - 84 - 95 - 82 = -164

Since it's not possible for Andace to score a negative number on her fifth exam, we can conclude that she needs to score at least 98 (93 - 5) to have an average of 90 or better for the five exams.

In conclusion, Andace needs to score at least 98 on her fifth exam to have an average of 90 or better for all five exams.


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If the price of a new car is $24,000, the total owed for tax is $1,518.50.

Tax is the money that the government collects from people and organizations for providing public services and infrastructure.

The total owed for tax on a $24,000 car purchase is calculated by multiplying the sales tax rate of 6.25% by the price of the car.

The result of this calculation is the sales tax portion of the total amount owed.

The title fee of $18.50 is added to this amount to get the total amount due for tax on the purchase of the car.

Mathematically, the equation for the total owed for tax is:

Total Tax = (6.25% x $24,000) + $18.50

Total Tax = ($1,500 + $18.50)

Total Tax = $1,518.50

Therefore, if the price of a new car is $24,000, the total owed for tax is $1,518.50.

This amount includes the sales tax portion of 6.25% of the car's price and a title fee of $18.50. This tax amount must be paid before the buyer can take possession of the car.

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The slope-intercept form of the equation of the line described is y = 2x + 1.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical expression:

y - y₁ = m(x - x₁)

Where:

Since the line is perpendicular to the other line that is represented by this equation y = -1/2(x) - 2, we have the following;

Slope (m) = -1/2.

Perpendicular line.

m₁ × m₂ = -1

-1/2 × m₂ = -1

m₂ = 2.

At data point (2, 5), a linear equation in slope-intercept form for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 5 = 2(x - 2)

y = 2x - 4 + 5

y = 2x + 1

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Richelle should use 50 degrees for cherry pie in her pie chart.

The total number of students is 36.

The number of students who prefer chocolate pie is 12.

The number of students who prefer apple is 8.

The number of students who prefer blueberry is  6.

Half of the remaining students prefer cherry pie and half prefer lemon.

So we can calculate the number of students who prefer cherry pie by doing is 1/2 × (36 − 12 − 8 − 6) = 5

The number of students who prefer cherry pie is 5.

The number of students prefer lemon pie is also 5.

The formula for calculating the degrees of an angle in a pie chart is given by the formula given below:

Number of degrees is,

= (number of students who prefer cherry pie / total number of students) × 360°

= (5/36) × 360°= 50°

Thus, Richelle should use 50 degrees for cherry pie in her pie chart.

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Answer:

x=130°

Step-by-step explanation:

The sum of the angel of the pentagon is equal to 540°

X+90+x+150+x=540

3x+240=540

3x=540-150

3x=390

X=130

Answer:

2*22/7/27+1

Step-by-step explanation:

2*22/7*27+1

2*(594+1)/7

2*595/7

2*85

170 ans..

The given equation 3x + 7y = 11 is equal to (1,-2).

The given equation is 3x + 7y = 11.

To find the solution of the equation, we need to consider the given options:

(6,-1)(1,-2)(0,4)

Now substitute each value of x and y in the given equation, we get,

If x = 6 and y = -13(3 × 6) + (7 × -1) = 18 - 7 = 11 ≠ 11

If x = 1 and y = -2(3 × 1) + (7 × -2) = 3 - 14 = -11 ≠ 11

If x = 0 and y = 4(3 × 0) + (7 × 4) = 0 + 28 = 28 ≠ 11

Therefore, the given equation 3x + 7y = 11 is equal to (1,-2).

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1. The area of the circle with radius r = 4 is 200.96 square cm. 2. The area of the circle is approximately 113.04 square cm.

A circle's radius is equal to twice its diameter. In other words, if d is the diameter and r is the radius, then d = 2r. On the other hand, a circle's radius is equal to half of its diameter. Finding the circumference or area of a circle are only two examples of computations involving circles for which this connection is crucial.

The area of the circle is given by the formula:

A = πr²

Substituting the value r = 8 we have:

Area = 3.14(8)² = 200.96 square cm

2. For circle with d = 12 cm we have the radius as:

r = 12/2 = 6

A = 3.14(6)² = 113.04 square cm

Hence, the area of the circle with radius r = 4 is 200.96 square cm. 2. The area of the circle is approximately 113.04 square cm.

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Answer:

Let's call the length of the hypotenuse SD as x.

Since the altitude from T to SD divides SD into two parts, let the length of the shorter part be y. Then the length of the longer part is x-y.

Using similar triangles, we have:

TU/TS = ST/TD

Substituting the values we have:

TU/(3√5) = √5/UD

TU = (3/5)UD

Using the Pythagorean theorem in triangle TUS, we have:

TU² + (3√5)² = TS²

(3/5 UD)² + 45 = ST²

9/25 UD² + 45 = ST²

Using the Pythagorean theorem in triangle TUD, we have:

TU² + UD² = TD²

(3/5 UD)² + UD² = x²

9/25 UD² + UD² = x²

34/25 UD² = x²

UD² = (25/34)x²

Substituting the value of UD² in the equation ST² = 9/25 UD² + 45, we get:

ST² = 9/25 (25/34)x² + 45

ST² = 45/34 x² + 45

Since y = x-y-1, we have y = (x-1)/2.

Using the Pythagorean theorem in triangle TUD, we have:

(1/4) (x-1)² + UD² = x²

(1/4) (x² - 2x + 1) + (25/34)x² = x²

(1/4)(x²) + (25/34)x² - (1/2)x + (1/4) = 0

(59/68)x² - (1/2)x + (1/4) = 0

Using the quadratic formula, we get:

x = [1/2 ± √(1/4 - 4(59/68)(1/4))]/(2(59/68))

x = [1/2 ± (3√34)/17]/(59/34)

x = 17/59 ± 6√34/59

Since x is the hypotenuse SD, we have:

UD² = (25/34) x²

UD² = (25/34) [(17/59 ± 6√34/59)²]

UD² = 136/59 ± 204√34/295

Therefore, the exact lengths of the two parts of the hypotenuse are:

SD = x = 17/59 ± 6√34/59

SU = x-y = (x-1)/2 = 8/59 ± 3√34/59

UD = y = (x-1)/2 = 8/59 ± 3√34/59

TU = (3/5) UD = (3/5) [8/59 ± 3√34/59] = 24/295 ± 9√34/295

ST² = 45/34 x² + 45 = 45/34 [(17/59 ± 6√34/59)²] + 45

ST = √[45/34 [(17/59 ± 6√34/59)²] + 45]

If x = (5,-5) and y = (8,-3), x•y is: 55.

The dot product (also called scalar product or inner product) of two vectors x = (x1, x2) and y = (y1, y2) is given by:

x•y = x1y1 + x2y2

Using the coordinates of the given vectors:

x = (5, -5)

y = (8, -3)

x•y = (5)(8) + (-5)(-3) = 40 + 15 = 55

Therefore, x•y = 55.

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It is fine to use these data because the price sample is random so bias will not interfere with the results.

Based on the information, we can infer that it is correct to use the data from this sample because it is random, that is, it does not have a defined order. Therefore, it is not necessary to take bias into account because it will not have any influence on the results.

In accordance with the above, it would be incorrect to take the data from a non-random sample because information would be prioritizing and this would cause the results to be blinded.

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Certainly, there is a significant difference in the mean amount of e.coli bacteria detected by the two methods for this type of beef. This can be supported statistically by conducting a hypothesis test.

           The null hypothesis ([tex]H_0[/tex]) is that there is no significant difference in the mean amount of E. coli bacteria detected by the two methods. The alternative hypothesis ([tex]H_a[/tex]) is that there is a significant difference in the mean amount of e.coli bacteria detected by the two methods.

          The two-sample t-test can be used to test the hypothesis. The t-test compares the means of two independent groups and determines whether they are significantly different. The t-test assumes that the two samples are normally distributed and have equal variances.

          If the sample sizes are large, then the t-test can still be used even if the samples are not normally distributed.

          The formula for the t-test is:

                   [tex]t = (x_1 - x_2) / [s^2(1/n_1 + 1/n_2)][/tex]

       Where:

                     [tex]x_1[/tex] = the sample mean for method 1

                     [tex]x_2[/tex] = the sample mean for method 2

                     [tex]s^2[/tex] = the pooled variance of the two samples

                     [tex]n_1[/tex] = the sample size for method 1

                     [tex]n_2[/tex] = the sample size for method 2

        The t-value can then be compared to the critical value of  [tex]t[/tex] for the desired level of significance (usually 0.05).

         If the t-value is greater than the critical value of [tex]t[/tex], then the null hypothesis can be rejected and it can be concluded that there is a significant difference in the mean amount of E. coli bacteria detected by the two methods.

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Thus, option (d) is the correct answer.

Option (d) as x approaches infinity, the value of g(x) eventually exceeds the values of both f(x) and h(x) is the correct option. Since the functions are:f(x) =[tex]8x² + x + 3g(x) = 4x² – 1h(x) = 3x + 6[/tex]

a) over the interval [3, 5], the average rate of change of g and h is more than the average rate of change of f.It is not possible to determine which of these functions has a higher average rate of change since they all have different derivatives.b) over the interval [0, 2], the average rate of change of f and h is less than the average rate of change of g.The average rate of change of f(x) = [tex]8x² + x + 3[/tex]over the interval [0, 2] is given by:f'(x) = 16x + 1The average rate of change of f(x) = 8x² + x + 3 over the interval [0, 2] is:

[tex]f(2) - f(0)/2 - 0= f(2) - f(0)/2 = [8(2)² + 2 + 3 - (8(0)² + 0 + 3)]/2 = [32 + 2 + 3 - 3]/2 = 34/2 = 17[/tex]

The average rate of change of h(x) = 3x + 6 over the interval [0, 2] is given by:h'(x) = 3The average rate of change of h(x) = 3x + 6 over the interval [0, 2] is:[tex]h(2) - h(0)/2 - 0= h(2) - h(0)/2 = [3(2) + 6 - (3(0) + 6)]/2 = 12/2 = 6[/tex]The average rate of change of g(x) = 4x² - 1 over the interval [0, 2] is given by:g'(x) = 8xThe average rate of change of g(x) = 4x² - 1 over the interval [0, 2] is:[tex]g(2) - g(0)/2 - 0= g(2) - g(0)/2 = [4(2)² - 1 - (4(0)² - 1)]/2 = 16 - 1/2 = 15/2[/tex]

Thus, it can be concluded that the average rate of change of g(x) > f(x) > h(x) over the interval [0, 2]c) as x approaches infinity, the values of g(x) and h(x) eventually exceed the value of f(x).It is not true since g(x) and h(x) both have leading coefficients of 4 and 3, respectively, and will eventually grow faster than f(x) with a leading coefficient of 8.d) as x approaches infinity, the value of g(x) eventually exceeds the values of both f(x) and h(x)The leading coefficient of g(x) = 4x² - 1 is 4, and as x approaches infinity, it will continue to grow faster than both f(x) = 8x² + x + 3 and h(x) = 3x + 6, which have leading coefficients of 8 and 3, respectively.

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1. The amount of medication to be given is 99.25 mg.

2.The amount of 1.985 mL medication should be injected.

To answer the given question, let's follow the steps mentioned below.

1. Convert the weight of the patient from pounds to kilograms.
    175 pounds = 79.4 kilograms

2. Multiply the patient's weight in kilograms by the ordered dosage.
    1.25 mg/kg × 79.4 kg = 99.25 mg

Therefore, 99.25 mg of medication is required

1. Find the number of milliliters (mL) required to deliver the medication dosage.
      The concentration of the drug is 100 mg/2 mL.
      100 mg/2 mL ÷ 1 = 50 mg/m

2. Divide the total amount of medication required by the concentration of the drug.
      99.25 mg ÷ 50 mg/mL = 1.985 mL

Therefore, 1.985 mL of the medication should be injected.

Note:

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Since the linear model y = 11x + 41 can be used to represent the data when x≥0, the two statement which best describe the value 41 include the following:

B. initial number of students in attendance when x = 0.

E. y-intercept.

In Mathematics, the slope-intercept form of the equation of a straight line is represented by this mathematical expression;

y = mx + c

Where:

Based on the information, an equation that models the line is given by this mathematical expression;

y = mx + c

y = 11x + 41

By comparison, we have the following:

mx = 11x

Slope, m = 11.

Initial number or y-intercept, c = 41.

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that the sum of the angles in a triangle is 180 degrees: C = 180 - A - B

C = 180 - 15 - 120

C = 45 degrees.

A triangle is a geometrical shape that consists of three straight sides and three angles. It is a three-sided polygon, which means that it is a closed figure with three-line segments as its sides. The sum of the interior angles of a triangle is always equal to 180 degrees, which is a fundamental property of triangles. Triangles can have different shapes and sizes, and they can be classified based on their side lengths and angle measures. Some common types of triangles include equilateral triangles (where all three sides are equal), isosceles triangles (where two sides are equal), and scalene triangles (where all three sides are different lengths). Triangles are commonly used in mathematics, geometry, and various fields of science and engineering.

by the question.

To solve the triangle, we can use the Law of Cosines, which states that:

[tex]c^{2} = a^{2} + b^{2} -2abcos(c)[/tex]

where c is the length of the third side and C is the angle opposite to it.

Given that one side is 17 and the first angle is 15 degrees, we can use the Law of Sines to find the ratio of the remaining sides:

[tex]a/sin(A) = b/sin(B) = c/sin(C)[/tex]

where A and B are the known angles and a and b are the known sides.

Using this formula, we have:

[tex]a/sin(15) = b/sin(120)[/tex]

or

[tex]b=a/sin(15) = b/sin(120)[/tex]

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1. The  probability of landing on red is 7/20.

2. I will predict 25 to be white.

3. I will predict 48 to be blue.

4. It will most likely land on red.

Probability deals with the study of random events. It involves determining the likelihood or chance of an event occurring, based on the information available.

The basic formula for probability is:

P(event) = number of favorable outcomes / number of possible outcomes

number of possible outcomes = 7 + 5 + 4 + 4 = 20

1) P(red) = number of red / number of possible outcomes

P(red) = 7/20

2) when spun 100 times:

number of white = P(white) * 100

number of white = 5/20 * 100 = 25

3) when spun 240 times:

number of blue = P(blue) * 100

number of blue = 4/20 * 240 = 48

4) That will be the color with highest probability. That is color red with probability of 7/20.

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https://brainly.com/question/24756209

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