BRAINIEST TO WHOEVER CAN ANSWER THIS QUESTION!

BRAINIEST TO WHOEVER CAN ANSWER THIS QUESTION!

Answers

Answer 1

Answer:

x=72

y=92

Sum of Opposite angles of a cyclic quadrilateral is 180°


Related Questions

The temperature on a winter night was -21 F. The temperature rose by 7 F when the sun came up. When the sun set again, the temperature dropped by 9 F. Find the temperature after the sun set.

Answers

Answer:

-23

Step-by-step explanation:

-21 + 7 is -14
-14 - 9 is -23

What is the median number of musical instruments played? Number of instruments 0 1 2 3 Frequency 2 3 2 4​

Answers

The median number of musical instrument played is 1.5.

First, we need to arrange the number of instruments in ascending order, along with their respective frequencies:

Number of instruments: 0, 1, 2, 3

Frequency: 2, 3, 2, 4

To find the median, we need to determine which value is in the middle when the data is arranged in order. Since we have an even number of data points (11 in total), the median will be the average of the two middle values.

The two middle values are the second and third values: 1 and 2.

So, the median number of musical instruments played is the average of 1 and 2, which is:

Median = (1 + 2)/2 = 1.5

Therefore, the median number of musical instruments played is 1.5.

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Triangle ABC has the following measures:
a=16.2, b=22.5, and m∠A=35 degrees. What is a possible measure of angle C?

Answers

The possible measure for the angle C is 55 degrees.

We know that the sum of all the angles in a triangle is 180 degrees.

Now we know that angle A has a measure of 35 degrees,

so using the Law of Cosines we can find angle B:

[tex]c^2 = a^2 + b^2 - 2ab*cos(m\angle CAB)[/tex]

where c is the length of side C, and m∠CAB is the measure of angle B.

Substituting the given values, we get:

[tex]c^2 = 16.2^2 + 22.5^2 - 2(16.2)(22.5)*cos(m\angle CAB)[/tex]

Simplifying, we get:

[tex]c^2 = 1055.29 - 729*cos(m\angle CAB)[/tex]

To find a possible measure of angle C, we can try different values of [tex]cos(m\angle CAB)[/tex] and solve for c.

Let's start by assuming that [tex]cos(m\angle CAB)[/tex] is equal to -1, which means that angle CAB is a straight angle (180 degrees). In this case, we get:

[tex]c^2 = 1055.29 - 729*(-1) = 1784.29[/tex]

Taking the square root of both sides, we get:

[tex]c = \sqrt{1784.29} = 42.24[/tex]

However, this value of c is larger than the sum of sides a and b, which violates the triangle inequality. Therefore, angle CAB cannot be a straight angle, and [tex]cos(m\angle CAB)[/tex] must be greater than -1.

Let's try [tex]cos(m\angle CAB)[/tex] equal to 0, which means that angle CAB is a right angle (90 degrees). In this case, we get:

[tex]c^2 = 16.2^2 + 22.5^2 - 2(16.2)(22.5)*cos(90)\\c^2 = 1055.29[/tex]

Taking the square root of both sides, we get:

[tex]c = \sqrt{(1055.29)} = 32.46[/tex]

This value of c is less than the sum of sides a and b, so it satisfies the triangle inequality. Therefore, a possible measure of angle C is:

[tex]m\angle C = 180 - m\angle A - m\angle B = 180 - 35 - 90 = 55\ degrees[/tex]

Note that this is only one possible measure of angle C, as there could be other values of [tex]cos(m\angle CAB)[/tex]that also satisfy the triangle inequality.

The possible measure for the angle C is 55 degrees.

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Protractor postulate: given any angle, we can express its measure as a unique ______________ number from 0 to 180 degrees.

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Protractor postulate: given any angle, we can express its measure as a unique real number from 0 to 180 degrees.

The protractor postulate is a fundamental concept in geometry that establishes a way to measure angles using a protractor. According to this postulate, every angle can be uniquely represented by a real number between 0 and 180 degrees.

A protractor is a geometric tool with a semicircular shape and marked degrees along its edge. To measure an angle using a protractor, we align the center of the protractor with the vertex of the angle and the baseline of the protractor with one side of the angle. We then read the degree measure where the other side of the angle intersects the protractor.

The protractor is divided into 180 degrees, with 0 degrees being the starting point at the baseline of the protractor, and 180 degrees being at the opposite end of the baseline. By aligning the protractor with an angle, we can determine its measure as a real number within this range.

For example, if we measure an angle using a protractor and find that the other side intersects the protractor at 45 degrees, we can express the measure of the angle as 45 degrees. Similarly, if the intersection point is at 90 degrees, the angle measure would be 90 degrees. The protractor postulate guarantees that these angle measures are unique within the range of 0 to 180 degrees.

It is important to note that the protractor postulate assumes that angles can be measured using a protractor and that the measurement is accurate and reliable. The postulate provides a consistent and standardized way to assign a numerical value to an angle, allowing for precise communication and comparison of angles in geometric contexts.

In summary, the protractor postulate establishes that the measure of any angle can be expressed as a unique real number between 0 and 180 degrees. This concept is fundamental in geometry and allows for the measurement, comparison, and communication of angles using a protractor.

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Find a set of parametric equations for the rectangular equation that satisfies the given condition. (Enter your answers as a comma-separated list.) y = 3x - 4, t = 0 at the point (4, 8)

Answers

To find the set of parametric equations for the rectangular equation y = 3x - 4, we need to express x and y in terms of a parameter, say t. Let us assume that t = 0 at the point (4, 8).

First, we can write x in terms of t as x = 4 + at, where a is some constant. To find the value of a, we can use the fact that y = 3x - 4. Substituting x = 4 + at in this equation, we get y = 3(4 + at) - 4 = 12 + 3at. So, the set of parametric equations for y and x are:

x = 4 + at
y = 12 + 3at

Note that these parametric equations are not unique. We could have chosen a different parameterization, say t = 1 at the point (4,8), and obtained a different set of parametric equations. However, the given condition specifies the starting point and therefore determines the parameterization.

In summary, we can find a set of parametric equations for a rectangular equation by expressing x and y in terms of a parameter, using the given condition to determine the starting point, and choosing a suitable parameterization.

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Determine whether the fallacy committed by the following argument is a formal fallacy or an informal fallacy. Everything that runs has feet. The columbia river runs very swiftly. Therefore, the columbia river has feet

Answers

The fallacy committed by the following argument is a formal fallacy, specifically the fallacy of the undistributed middle.

The argument assumes that everything that runs has feet, and that the Columbia River runs very swiftly. From these two premises, the conclusion is drawn that the Columbia River has feet, which is a non sequitur.

This fallacy occurs when a categorical syllogism has a middle term that is not distributed in either the major or minor premise. In this case, the term "has feet" is not distributed in either premise, and thus the argument is invalid.

It is important to note that formal fallacies are errors in the structure or form of an argument, rather than errors in the content or premises of the argument. While formal fallacies are often easier to identify and correct than informal fallacies, both can undermine the validity and persuasiveness of an argument.

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The fallacy committed by the following argument is a formal fallacy, specifically the fallacy of the undistributed middle.

The argument assumes that everything that runs has feet, and that the Columbia River runs very swiftly. From these two premises, the conclusion is drawn that the Columbia River has feet, which is a non sequitur.

This fallacy occurs when a categorical syllogism has a middle term that is not distributed in either the major or minor premise. In this case, the term "has feet" is not distributed in either premise, and thus the argument is invalid.

It is important to note that formal fallacies are errors in the structure or form of an argument, rather than errors in the content or premises of the argument. While formal fallacies are often easier to identify and correct than informal fallacies, both can undermine the validity and persuasiveness of an argument.

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A special design was created to advertise an event. Copies of the original design are scale drawings in different sizes. The dimensions of the original design are 6 centimeters by 10 centimeters, and the dimensions of all copies must be proportional to the original. Which of these sizes could be used?

Answers

The sizes could be used are 5 cm by 3 cm.

All sizes that have dimensions proportional to 6 cm by 10 cm can be used. This means that the ratio of the length to the width of the copies must be the same as the ratio of the length to the width of the original.

This ratio is 10/6 = 5/3.

For example, a size of 15 cm by 9 cm can be used because the ratio of length to width is 15/9 = 5/3, which is the same as the ratio of length to width of the original.

Similarly, a size of 12 cm by 8 cm can be used, and so on, as long as the ratio of the dimensions is 5/3.

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Second chance! Review your workings and see if you can correct your mistake.
Susan is trying to find angle b.
She finds angle a first and then she finds angle b from angle a.
a) Which angle fact does she use to find angle a?
b) Which angle fact does she then use to find angle b?
b
139°
a

Answers

Angles a and 139 are corresponding angles thus a = 139°

Angles a and b are supplementary hence b = 41°

What are angles?

When a transversal connects two parallel lines, it creates corresponding angles, which are two angles in a pair. A transversal produces a total of eight angles when it crosses two parallel lines. Pairs of these angles that are at the same relative position at each intersection are said to be corresponding angles.

Angles that correspond to one another have the same measure and are therefore congruent. The characteristics of parallel lines and the angles that the transversal forms lead to this congruence.

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Final answer:

Susan most likely used angle facts related to the sum of angles in a triangle to calculate angle a and then used triangle angle-sum property to find angle b.

Explanation:

To answer your questions:

Susan likely used angles facts related to the sum of angles in a triangle to find the calculation of angle a. This principle states that the sum of all angles in a triangle is always equal to 180 degrees.

For angle b, she then used triangle angle-sum property, which states that the measure of an angle of a triangle is equal to the sum of the measures of the other two angles subtracted from 180 degrees.

For instance, if angle a was 41 degrees, and the third angle was known to be 100 degrees, she would subtract these two angles from 180, resulting in angle b being 39 degrees.

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7. A rectangular patio has an area of 27 square yards. Its width is one-third of its
length. Find the length and width of the patio.

Answers

The length and width of the rectangular patio are 9 yards and 3 yards.

Let's assume that the length of the rectangular patio is x yards.

Then, according to the problem statement, the width of the rectangular patio is one-third of its length. As a result, the width of the rectangular patio is:

width = (1/3)x

The area of the rectangular patio is given as 27 square yards. We know that the area of a rectangle may be calculated as follows:

area = length x width

Substituting the values of width and area, we get:

27 = x*(1/3)x

Multiplying both sides by 3, we get:

81 = x²

When we take the square root of both sides, we get:

x = 9

So the length of the rectangular patio is 9 yards, and the width of the rectangular patio is:

width = (1/3)x = (1/3)*9 = 3

Therefore, the length and width of the rectangular patio are 9 yards and 3 yards, respectively.

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assume it should be a t-test and the sample size is 105. what decision would be made for a hypothesis test significance 0.05 if you calculated a test

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For a two-tailed test with a significance level of 0.05, we divide the significance level by 2 to obtain 0.025 for each tail.

Let's say we have two groups, Group A and Group B, and we want to compare their means. We can express the hypotheses as follows:

H₀: μ₁ = μ₂

H₁: μ₁ ≠ μ₂

Here, μ₁ represents the population mean of Group A, and μ₂ represents the population mean of Group B. The null hypothesis states that the means of the two groups are equal, while the alternative hypothesis states that they are not equal.

Next, we calculate the t-statistic using the sample data and the formula:

t = (x₁ - x₂) / (sₐ * √(1/n₁ + 1/n₂))

In this formula, x₁ and x₂ are the sample means of Group A and Group B, respectively. n₁ and n₂ represent the sample sizes of the two groups. s_p is the pooled standard deviation, which combines the sample standard deviations of both groups and is given by:

sₐ = √(((n₁ - 1) * s₁² + (n₂ - 1) * s₂²) / (n₁ + n₂ - 2))

In the above equation, s₁ and s₂ are the sample standard deviations of Group A and Group B, respectively.

Once we have calculated the t-statistic, we compare it to the critical t-value. The critical t-value is determined based on the significance level and the degrees of freedom, which is calculated as (n₁ + n₂ - 2) in this case.

Using a t-table or statistical software, we can find the critical t-value that corresponds to a cumulative probability of 0.025 for the given degrees of freedom.

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(q49) Find f’(0.1), if

Answers

The numeric value of the derivative of f(x) at x = 0.1 is given as follows:

B. 10.2062.

How to obtain the numeric value of the derivative?

The function in the context of this problem is defined as follows:

[tex]f(x) = \sech^{-1}{2x}[/tex]

Applying the chain rule, we consider these following derivatives:

[2x]' = 2.[tex](\sech^{-1}(x))^{\prime} = \frac{1}{x\sqrt{1 - x^2}}[/tex]

Hence the derivative of the composite function f(x) is given as follows:

[tex]f^{\prime}(x) = \frac{2}{2x\sqrt{1 - (2x)^2}}[/tex]

Hence the numeric value of the derivative at x = 0.1 is given as follows:

[tex]f^{\prime}(0.1) = \frac{2}{2(0.1)\sqrt{1 - (2(0.1))^2}}[/tex]

f'(0.1) = 10.2062.

Hence option B is the correct option in the context of this problem.

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if a matrix a is diagonalizable and the inverse a−1 exists, then a−1 is also diagonalizable. explain why this is true.

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If a matrix A is diagonalizable, then it can be written as A = PDP^(-1), where P is the matrix of eigenvectors and D is the diagonal matrix of eigenvalues. If a matrix A is diagonalizable and its inverse A^(-1) exists, then A^(-1) is also diagonalizable.

Now, if the inverse A^(-1) exists, then we know that A is invertible and has no zero eigenvalues. Thus, all the eigenvalues of A are nonzero.

We can then use the fact that the inverse of a diagonal matrix is also diagonal. Specifically, if D is a diagonal matrix with diagonal entries d_1, d_2, ..., d_n, then its inverse D^(-1) is also a diagonal matrix with diagonal entries 1/d_1, 1/d_2, ..., 1/d_n.

Using this, we can write A^(-1) as P(D^(-1))P^(-1), which shows that A^(-1) is also diagonalizable with the same set of eigenvectors as A, but with the inverse of the eigenvalues on the diagonal.

Therefore, if a matrix A is diagonalizable and its inverse A^(-1) exists, then A^(-1) is also diagonalizable.


If a matrix A is diagonalizable and the inverse A^(-1) exists, then A^(-1) is also diagonalizable. This is true because:

1. Since A is diagonalizable, there exists an invertible matrix P and a diagonal matrix D such that A = PDP^(-1).
2. As A^(-1) exists, we can multiply both sides of the equation A = PDP^(-1) by A^(-1) on the left.
3. We get A^(-1)A = A^(-1)PDP^(-1), which simplifies to I = A^(-1)PDP^(-1), where I is the identity matrix.
4. Now, we want to find A^(-1), so we can multiply both sides of the equation I = A^(-1)PDP^(-1) by P on the left and P^(-1) on the right.
5. We get PP^(-1) = A^(-1)PDP^(-1)PP^(-1), which simplifies to A^(-1) = PD^(-1)P^(-1).
6. Notice that the matrix D^(-1) is also a diagonal matrix because the inverse of a diagonal matrix is simply the reciprocal of its diagonal entries, and all non-diagonal entries remain zero.
7. Therefore, A^(-1) can be expressed as the product of an invertible matrix P, a diagonal matrix D^(-1), and the inverse of the matrix P, which means A^(-1) is diagonalizable.

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find the exact value of the expression, if it is defined. (if an answer is undefined, enter undefined.) cos(sin−1(0))

Answers

Therefore, The exact value of the expression cos(sin^(-1)(0)) is 1, as cos(0 radians) = 1.

The expression cos(sin−1(0)) can be solved using the trigonometric identity that sin(arcsin(x)) = x. Therefore, sin(sin−1(0)) = 0. We know that the cosine of 0 degrees is equal to 1, so the answer to the expression is 1.
We are given the expression cos(sin^(-1)(0)) and need to find its exact value.
Step 1: Identify that sin^(-1)(0) is the angle whose sine value is 0.
Step 2: Recall that the sine of an angle is 0 at two specific angles: 0 degrees and 180 degrees (or 0 and π radians).
Step 3: Since the range of sin^(-1) is from -π/2 to π/2, we only consider 0 radians.
Step 4: Now, we find the cosine of the angle we just found: cos(0 radians).

Therefore, The exact value of the expression cos(sin^(-1)(0)) is 1, as cos(0 radians) = 1.

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the half life of radium is 1690 years if 8 grams are present now how many grams will be present in 100 years

Answers

So, approximately 7.71 grams of radium will be present after 100 years.

To calculate the remaining amount of radium after 100 years, we will use the half-life formula:
Remaining Amount = Initial Amount * (1/2)^(time passed / half-life)
Here, the initial amount is 8 grams, the half-life is 1690 years, and the time passed is 100 years.
Step 1: Plug in the values
Remaining Amount = 8 * (1/2)^(100 / 1690)
Step 2: Calculate the exponent
Exponent = 100 / 1690 ≈ 0.05917
Step 3: Calculate the base raised to the exponent
(1/2)^0.05917 ≈ 0.9634
Step 4: Multiply the initial amount by the base raised to the exponent
Remaining Amount = 8 * 0.9634 ≈ 7.7072
So, approximately 7.71 grams of radium will be present after 100 years.
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a regular pentagon has an apothem of 3.2m and an area of 27.2^ m2. what is the length of one side of the pentagon

Answers

The length of one side of the regular pentagon for the given area and length of apothem is equal to 3.4 meters.

In a regular pentagon,

measure of apothem of a regular pentagon = 3.2m

Area of regular pentagon = 27.2 square meter

Use the formula for the area of a regular pentagon we have,

A = (5/2) × a × ap

where A is the area of the pentagon,

a is the length of one side,

and ap is the apothem the distance from the center of the pentagon to the midpoint of a side.

The apothem is 3.2 m and the area is 27.2 m², so we can plug in these values and solve for a,

⇒ 27.2 = (5/2) × a × 3.2

Simplifying,

⇒ 27.2 = 8a

⇒ a = 27.2/8

      = 3.4

Therefore, the length of one side of the regular pentagon is 3.4 meters.

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Oliver puts 4000 into this saveimg account if he withdraw all of the money after 2 years how much money will he end up with
The amount of money in the account increase by 10% each year
5% of any money withdrawn is paid back to the bank as a fee

Answers

The terminal amount that Oliver will end up with after putting $4,000 into this savings account that increases by 10% annually and pays a 5% withdrawal fee to the bank is $4,598.

How the terminal amount is determined:

The terminal amount is the future value of the present investment less the withdrawal fee.

The future value can be computed using the FV table, formula, or an online finance calculator.

The present value (investment) = $4,000

The number of investment period = 2 years

The compound interest rate = 10%

Compounding factor after 2 years = 1.21 [(1.1)²]

The future value of the account after 2 years = $4,840 ($4,000 x 1.21)

The bank fee for withdrawal = 5% of $4,840 = $242

The terminal amount that Oliver will end up after 2 years of compounding at 10% and the payment of the bank withdrawal fee is $4,598 ($4,840 - $242).

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HELP ME GET THIS ASAPPPPP

Answers

The legs of the given right angle triangle is 2cm and 6 cm,

Hence , option B is correct.

What is line?

A line has length but no width, making it a one-dimensional figure. A line is made up of a collection of points that can be stretched indefinitely in opposing directions. Two points in a two-dimensional plane determine it.

Given that,

Area of right angle triangle = 12 cm²

Consider length of triangle = l

And breath of triangle = b

And we know that area of triangle = (1/2) x l x b

Therefore,

⇒ 12 = (1/2) x l x b

⇒ 24 =  l x b

This is possible if we take l =4 and b = 6

Then,

legs are l = 4 and b = 6

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A hiker is standing on one bank of a river. A tree stands on the opposite bank, which is 750 ft away. A line from the top of the tree to the ground at the hiker's feet makes an angle of 12° with the ground. How tall is the tree?

Answers

A hiker is standing on one bank of a river. The height of the tree is approximately 159.45 feet.

To solve this problem, we can use the concept of trigonometry and set up a right triangle with the tree height, the distance between the hiker and the tree, and the angle of elevation.

Let's denote the height of the tree as 'h' and the distance between the hiker and the tree as 'd.' We know that the angle of elevation is 12°, which means that the angle between the ground and the line of sight from the hiker's eyes to the top of the tree is 12°. Therefore, we can set up a right triangle as follows:

    /|

   / |

h /  |d

/   |

/θ___|

where θ represents the angle of elevation (12°).

We can use the tangent function to relate the height of the tree to the distance between the hiker and the tree:

tan θ = opposite/adjacent = h/d

Rearranging this equation gives:

h = d tan θ

Now, we know that the distance between the hiker and the tree is 750 ft, and the angle of elevation is 12°. Plugging these values into the equation above, we get:

h = 750 tan 12°

Using a calculator, we can find that tan 12° is approximately 0.2126. Therefore,

h = 750 * 0.2126 ≈ 159.45

So the height of the tree is approximately 159.45 feet.

Therefore, the height of the tree is approximately 159.45 feet.

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Find the derivative for y = (2x - 1)^3(4x + 3)^-3

Answers

Answer:

Differentiate using the Product Rule,

[tex]\frac{d}{dx}[/tex][f(x)g(x)]=f(x)[tex]\frac{d}{dx}[/tex][g(x)]+g(x)[tex]\frac{d}{dx}[/tex][f(x)]

[tex]\frac{30(2x-1)^2}{(4x+3)^4}[/tex]

Step-by-step explanation:

If x and y vary directly and y is 56 when x is 8, find y when x is 5.

Answers

when x is 5, y is 35.

If x and y vary directly, this means that their ratio remains constant. We can express this relationship mathematically as:

x/y = k

where k is the constant of proportionality.

To solve the problem, we first need to find the value of k using the information given:

y = kx

56 = k × 8

Solving for k, we get:

k = 7

Now that we have the value of k, we can use it to find y when x is 5:

y = kx

y = 7 × 5

y = 35

Therefore, when x is 5, y is 35.

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find the radius of convergence, r, of the following series. [infinity] n!(3x − 1)n

Answers

The radius of convergence of the given series is r = 1/3.

How we calculate radius?

To find the radius of convergence, we can use the ratio test. Applying the ratio test to the series, we take the limit as n approaches infinity of the absolute value of the ratio of the (n+1)th term to the nth term.

Taking the ratio of consecutive terms, we have |((n+1)!(3x - 1)[tex]^([/tex]n+1))/(n!(3x - 1)[tex]^n[/tex])|.

Simplifying the expression, we obtain |(n+1)(3x - 1)|.

Taking the limit as n approaches infinity, we can see that this expression goes to infinity unless (3x - 1) equals zero.

The series converges when (3x - 1) equals zero, which leads to x = 1/3

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Find the surface area of the sphere. Round your answer to the nearest hundredth.
7.5 cm
The surface area is about
square centimeters.

Answers

Answer:

706.86

Step-by-step explanation:

A=4πr2=4·π·7.5^2≈706.85835.

Answer:

706.86

Step-by-step explanation:

suppose a retailer turns its inventory of soda 48 times per year. on average, it has 414 bottles of soda on its shelves.(Round your answer to 1 decimal place.) What is the retailer's average daily sales rate? (Assume 365 days per ______ bottles year)

Answers

The retailer's average daily sales rate is approximately 142.5 bottles per day.

To arrive at this answer, we can use the inventory turnover formula:

Inventory turnover = Cost of goods sold / Average inventory

Since we don't have the cost of goods sold, we can use the number of units sold instead:

Inventory turnover = Units sold / Average inventory

We know that the inventory turnover is 48 times per year, so we can set up the equation:

48 = Units sold / 414

Solving for units sold, we get:

Units sold = 48 * 414 = 19,872

To find the average daily sales rate, we divide the total units sold by the number of days in a year:

Average daily sales rate = 19,872 / 365 = 54.4

Therefore, the retailer's average daily sales rate is approximately 142.5 bottles per day (rounded to 1 decimal place). This means that the retailer sells, on average, 142.5 bottles of soda every day throughout the year. This information can be useful for the retailer in managing its inventory levels and ensuring that it has enough stock on hand to meet customer demand. It can also be used to calculate revenue and profit margins based on the cost of goods sold.

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Can someone tell me what 3.2 x 0.51 is and please show the work.

Answers

Answer:

The answer is 1.632.

Step-by-step explanation:

First, you multiply 3.2 by 1, which gives you 3.2. Then you move the decimal point one place to the left to get 0.32. You write this as 16.0 under the line and align the decimal points.

Next, you multiply 3.2 by 0.5, which gives you 1.6. You write this under the line and align the decimal points.

Then you add the two partial products: 16.0 + 1.6 = 17.6.

Finally, you count the number of decimal places in both factors: 3.2 has one decimal place and 0.51 has two decimal places, so the product has three decimal places. You move the decimal point three places to the left in the final answer to get 1.632.

Answer:

Step-by-step explanation:

If a and b are positive numbers and each of the equations x 2
+ax+2b=0 and x 2
+2bx+a=0 has real roots, then find the smallest possible value of (a+b).

Answers

The smallest possible value of (a+b) is 2, and this value is attained when a = 1 and b = 1.

Let r and s be the roots of the equation x^2 + ax + 2b = 0, and let p and q be the roots of the equation x^2 + 2bx + a = 0. Since both equations have real roots, their discriminants are nonnegative:

a^2 - 8b ≥ 0

4b^2 - 4a ≥ 0

Simplifying the second inequality, we get:

b^2 - a ≥ 0

b^2 ≥ a

We want to minimize (a+b). Adding the two given equations, we get:

(x^2 + ax + 2b) + (x^2 + 2bx + a) = 0

2x^2 + (a+2b+2b)x + (a+2b) = 0

This equation has real roots if and only if its discriminant is nonnegative:

(a+2b+2b)^2 - 8(2x^2)(a+2b) ≥ 0

(a+4b)^2 - 16b(a+2b) ≥ 0

a^2 + 8ab + 12b^2 ≥ 0

This inequality is always true for positive a and b, so we can safely assume that a and b are positive. Therefore, we can divide both sides by 4b^2 to get:

(a/b)^2 + 8(a/b) + 12 ≥ 0

Letting t = a/b, we can rewrite this as a quadratic inequality:

t^2 + 8t + 12 ≥ 0

This inequality is true for all values of t, so there are no restrictions on the ratio a/b. Therefore, we can minimize (a+b) by choosing a and b to be as small as possible subject to the constraint that b^2 ≥ a. Since a and b are both positive, we can take a = 1 and b = 1 to achieve this minimum. This gives:

(a+b) = 1+1 = 2

Therefore, the smallest possible value of (a+b) is 2, and this value is attained when a = 1 and b = 1.

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Which situation shows causation?

Answers

The situation that shows causation are:

When the number of hours worked each week by an hourly employee decreases, the amount of money earned by the employee also decreases.When the number of bike trails in a city decreases, the amount of rainfall in the city increases."

What is causation ?

Causation in mathematics can be desrcibed as the term used in indicating a relationship between two events where there is a relationship between the two events and one of the event is affected by the other.

It shoud be note that In statistics, when the value of one event, increases or decreases due to the relationship beteen them, the other events is affected, it is said there is causation.

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comlete question;

Which situation shows causation?

When the number of people in a bus increases, the number of animals in a zoo also increases.

When the number of hours worked each week by an hourly employee decreases, the amount of money earned

by the employee also decreases.

When the amount of a discount for a sale increases, the number of items sold during the sale decreases.

6 When the number of bike trails in a city decreases, the amount of rainfall in the city increases.

5. define unbiased estimator. why are unbiased estimators useful? (2 points)

Answers

An estimator is said to be unbiased if the expected value of the estimator is equal to the true value of the parameter being estimated.

Unbiased estimators are useful because they provide an estimate that, on average, is equal to the true value of the parameter, making them desirable for making accurate inferences about a population.

In statistics, an estimator is a statistic used to estimate the value of an unknown parameter in a population. An estimator is said to be unbiased if, on average, it produces an estimate that is equal to the true value of the parameter. An unbiased estimator is desirable because it provides an estimate that is, on average, accurate, which is important for making inferences about a population.

Biased estimators, on the other hand, tend to consistently overestimate or underestimate the true value of the parameter, which can lead to incorrect conclusions. Therefore, unbiased estimators are useful because they provide more accurate estimates, which can lead to more reliable inferences about a population.

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What sort of monkeys makes the best wine

Answers

i can answer tht question andthat will be me!!

The area under the standard normal curve where P(Z >. - 0.5) is: 0.6479 0.3085 0.3521 0.3681 0.6915

Answers

The area under the standard normal curve where P(Z > -0.5) is 0.6915. To find this, we can use a standard normal distribution table or a calculator with a normal distribution function.

First, we need to find the z-score associated with -0.5. We know that the mean of the standard normal distribution is 0 and the standard deviation is 1. So, the z-score can be calculated as z = (x - μ) / σ = (-0.5 - 0) / 1 = -0.5. Now, we can look up the area to the right of the z-score -0.5 in a standard normal distribution table. The area is 0.6915, which means that the probability of getting a z-score greater than -0.5 is 0.6915.

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Find the values of a,b such that the function f(x)= 4x+b/ax+7

has the line x=5 as a vertical asymptote and the line y=6 as a horizontal asymptote.

Answers

The values of a and b for the function f(x) = (4x+b)/(ax+7) to have x=5 as a vertical asymptote and y=6 as a horizontal asymptote are a=1/6 and b=24.

For the function to have x=5 as a vertical asymptote, the denominator ax+7 must approach 0 as x approaches 5. This means that a must be equal to 1/6 to make ax+7 equal to 0 when x=5.

For the function to have y=6 as a horizontal asymptote, the limit of f(x) as x approaches infinity should be equal to 6. Therefore, we can use the fact that f(x) approaches b/a as x approaches infinity.

If we set b/a = 6, we can solve for b to get b = 6a.

Substituting the value of a we found earlier, we get b = 4.

Therefore, the values of a and b that satisfy the conditions are a=1/6 and b=24.

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