it takes 6 painters 4 1/2 hours to paint these classrooms .calculate how long 3 painters will take to compete the same job . is this direct or indirect proportion
​

18.43°

Given:A 10ft pole casts a 30ft shadow.To find:The angle of elevation of the sun.Diagram:Let AC be the height of the pole and BC be its shadow cast on the ground by the pole.Now, AB represents the ray of the sun. Angle ABC is the angle of elevation of the sun.Measurement:We have AC = 10ft, BC = 30ft.Let x be the angle of elevation of the sun. Then we have, tan(x) = opposite side/adjacent side = AC/BC = 10/30 = 1/3.To find the value of x, we have to take an inverse tangent of 1/3 on the calculator. We have,x = tan-1(1/3)x = 18.43°Therefore, the angle of elevation of the sun is 18.43°.

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After using the formula of a trapezoid, we know that the area is 25 units².

The size of a patch on a surface is determined by its area.

Surface area refers to the area of an open surface or the boundary of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a form or planar lamina.

The shape can also be placed on a grid, and the number of squares can be counted: The area of the rectangle is 15.

For instance, if each square is 1 meter in size, the area is 15 m² (15 square meters).

So, we  have the vertices as follows:

A(−3, 2), B(2, 2), C(2, −4), and D(−3, −2)

See, the plotted vertices on the graph.

The figure is a trapezoid.

The area of a trapezoid is as follows:

A = 1/2(AD+BC)AB

Now, find the distance:

AD = 4

BC = 6

AB = 5

Substitute as follows:

A = 1/2(4+6)5 = 25 units²

Therefore, after using the formula of a trapezoid, we know that the area is 25 units².

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Answer: To find the unit rate of seats per row, we can divide the total number of seats by the number of rows:

288 seats ÷ 6 rows = 48 seats per row

Therefore, the unit rate of seats per row is 48.

Brainliest is appreciated (:

Answer:

$1.64

Step-by-step explanation:

To find the unit price, we need to divide the total cost by the number of units. In this case, we have 3 caps in a pack, so the unit price is:

$4.93 / 3 = $1.64333333...

Rounding to the nearest cent, the unit price is $1.64.

After answering the presented question, we can conclude that As a cylinder result, option C. 1800 is the correct answer.

A cylinder is a three-dimensional geometric shape made up of two parallel congruent circular bases and a curving surface connecting the two bases. The bases of a cylinder are always perpendicular to its axis, which is an imaginary straight line passing through the centre of both bases. The volume of a cylinder is equal to the product of its base area and height. A cylinder's volume is computed as V = r2h, where "V" represents the volume, "r" represents the radius of the base, and "h" represents the height of the cylinder.

volume of the cylinder is:

[tex]V = \pi r^2h\\V = \pi (5^2)(18)\\V = \pi (25)(18)\\V = 450\pi cubic inches\\V =450 x 3.14\\V =1413.00 cubic inches\\[/tex]

As a result, option C. 1800 is the correct answer.

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The polynomial fraction division (1/x + 4) ÷ (x - 3/x² + 7x + 12) = (x + 3)/(x - 3)

A polynomial is a mathematical expression in which the least power of the unknown is 2.

Since we are given the polynomial expression

(1/x + 4) ÷ (x - 3/x² + 7x + 12).

We proceed to divide and simplify as follows.

(1/x + 4) ÷ (x - 3/x² + 7x + 12) = (1/x + 4) × (x² + 7x + 12)/(x - 3)

= (x² + 7x + 12)/(x - 3)(x + 4)

To simplify further, we factorize the numerator. So, we have that

x² + 7x + 12 = x² + 4x + 3x + 12

Factorizing, we have that

x² + 4x + 3x + 12 = x(x + 4) + 3(x + 4)

= (x + 3)(x + 4)

So, we have that

x² + 7x + 12 = (x + 3)(x + 4)

So, substituting this into the fraction, we have that

(x² + 7x + 12)/(x - 3)(x + 4) = (x + 3)(x + 4)/(x - 3)(x + 4)

Cancelling out (x + 4), we have that

(x² + 7x + 12)/(x - 3)(x + 4) = (x + 3)/(x - 3)

So, we have (1/x + 4) ÷ (x - 3/x² + 7x + 12) = (x + 3)/(x - 3)

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Step 3 is incorrect because it states that if all the sides of two figures are proportional then those two figures are similar.

Step 6 is incorrect because it states that if needed, we should reflect A B C D over segment WX. This is incorrect because reflection is not required to prove two figures are similar.

A segment is part of a market that is specifically targeted for a product or service. It is defined by characteristics such as demographics, geography, buying behavior, and interests. Segmentation helps companies to identify their target market and direct their marketing activities accordingly.

We can prove two figures are similar using a sequence of transformations that includes translations, rotations, and dilations, but not reflections. Reflection may be used to help visualize similar figures, but it is not necessary to prove that they are similar.

from the question:

Step 3 is erroneous since it implies that two figures are identical if all of their sides are proportionate. This isn't always the case because two figures can resemble one another without having sides that are proportional. When two figures of the same shape, such as two squares or two circles, proportional sides can only ensure that the two figures are identical.

Step 6 is erroneous because it instructs us to reflect A, B, C, and D over segment WX if necessary. This is false since the similarity between two figures can be established without thought. Using a series of transformations that includes translations, rotations, and dilations but not reflections, we may demonstrate the similarity of the two figures. Reflection may be employed to aid in seeing related figures, but it is not required to establish their similarity.

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Answer:

The cost of putting in the flooring is $493.20

Step-by-step explanation:

First you have to find the area

area = length times width

area = 5 x  18

a = 90 feet

The cost will be 90 x 5.48 = 493.20

Helping in the name of Jesus.

The answer is option C. (670 - x)

An expression is a combination of numbers, variables, and mathematical operations, such as addition, subtraction, multiplication, and division, among others. It is a mathematical phrase that represents a value or a set of values when evaluated. It can be simple or complex.

The number of calories Ling burned while exercising can be represented as:

Ling's calories burned = Marisol's calories burned - x

Since Marisol burned 670 calories, we can substitute this value:

Ling's calories burned = 670 - x

Therefore, the answer is 670 - x.

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Complete question-

Answer:

1.6

Step-by-step explanation:

The stock turnover at retail is a measure of how many times a business sells its average inventory during a period of time. We can calculate the stock turnover by dividing the retail sales by the average inventory.

Stock turnover = Retail Sales / Average Inventory

Given the values :

Substituting these values

Stock turnover at retail = 196,450 / 123,456 = 1.6 (rounded to the nearest tenth)

The given data are:

A function that:

The domain is the set of all real numbers

One x-intercept

The amplitude is 4

The y-intercept is (0,0)

From the choices, the functions containing "cosine" can be eliminated  since the described function passes through (0,0). So, we are left with two choices:

[tex]y = -4sin(x)[/tex] and [tex]y = 4sin (x)[/tex]

Given the amplitude of 4, the answer must be [tex]y = 4 sin(x)[/tex]

The expected number of students who have registered for the course on a pass/fail basis is 1.5.

To answer the given question, we can use the formula for expected value:
Expected Value = (Probability of Event Occurring) x (Number of Trials)
Here, the event is students taking the course on a pass/fail basis, and the number of trials is the total number of students registered for the course.

We are given that the probability of a student taking the course on a pass/fail basis is 3%, or 0.03.
Using this information,

we can substitute the values into the formula and calculate the expected number of students taking the course on a pass/fail basis:
Expected Value = (0.03) x (50)
Expected Value = 1.5.

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The triangle is acute since a² + b² < c² ( 2916 + 961  < 4761.

To determine whether the triangle is right, acute, or obtuse, we can use the Pythagorean Theorem, which states that in a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.

We can start by finding the longest side of the triangle, which is the hypotenuse.

hypotenuse = 69

Now we can use the Pythagorean Theorem to check whether the triangle is right:

a² + b² = c²

where a and b are the lengths of the other two sides of the triangle.

Plugging in the values we know, we get:

54² + 31² = 69²

Simplifying, we get:

2916 + 961 = 4761

3877 = 4761

Since this equation is not true, we know that the triangle is not a right triangle.

To determine whether the triangle is acute or obtuse, we need to compare the sum of the squares of the lengths of the shorter sides to the square of the length of the longest side:

a² + b² < c² => the triangle is acute

a² + b² > c² => the triangle is obtuse

c² = 69² = 4761

Plugging in the values we know, we get:

54² + 31² = 2916 + 961 = 3877

Since 3877 < 4761, we can conclude that the triangle is acute.

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Answer:

1. y = 5

2. x = 8√11

3. A = 20√11

4. 20√11 = 66.33

Step-by-step explanation:

1. sin(30) = y/10

=> 1/2 = y/10

y = 5

2. Pythagorean theorem: c^2 = a^2 + b^2

10^2 = x^2 + y^2

10^2 = x^2 + 5^2

x^2 = 100 - 25

x^2 = 75

x = √75 = 8√11

3. Are of right △: A=ab/2 = xy/2 = 5 x 8√11 x 1/2 = 20√11

4. 20√11 = 66.33

There are 40,320 different ways to arrange the letters of the word "notebook".

The word "notebook" contains 8 letters.

To calculate the number of different ways the letters can be arranged,

we can use the formula for permutations,

which is: n! / (n-r)!

where, n is the total number of items and r is the number of items selected.

For "notebook",

We want to find the number of permutations of all 8 letters,

So, n = 8 and r = 8.

Plugging these values into the formula,

we get: 8! / (8-8)! = 8!
Simplifying, 8! is equal to: 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 40,320

Therefore, there are 40,320 different ways to arrange the letters of the word "notebook".

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The volume of the rectangular prism is 60 cubic feet.

What is a rectangular prism?

A rectangular prism is a three-dimensional geometric shape with six faces, where each face is a rectangle. It is also known as a rectangular cuboid. A rectangular prism has 8 vertices, 12 edges, and 6 rectangular faces. The opposite faces of a rectangular prism are congruent and parallel to each other. The length (l), width (w), and height (h) of a rectangular prism are the three dimensions that determine its size and shape.

The formula for the surface area of a rectangular prism is:

SA = 2lw + 2lh + 2wh

where l, w, and h are the length, width, and height of the prism, respectively.

In this case, we have l = r, b = 5ft, h = 3ft, and SA = 94 sq ft. Substituting these values into the formula, we get:

94 = 2(r)(5) + 2(r)(3) + 2(5)(3)

94 = 10r + 6r + 30

94 = 16r + 30

64 = 16r

r = 4

So, the length of the rectangular prism is 4 feet.

Now, we can use the formula for the volume of a rectangular prism:

V = lwh

Substituting the values for l, w, and h, we get:

V = (4)(5)(3) = 60 cubic feet

Therefore, the volume of the rectangular prism is 60 cubic feet.

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Answer:

Below

Step-by-step explanation:

After 1 year there will be 25 % more than 400   or    1.25 * 400 = 500 wolves      after two years there will be 25 % more than 500 wolves

   = 1.25 * 500 = 625 wolves

Check the picture below.

The function representing the daily profit based on production of premium coffee is given by ,

T = [tex]\int_{1}^{x}[/tex]  [(t² + 1 ) / t² ] dt +  (13,500 + (1/x) - x)

Function for daily profit associated with the production of excel so coffee is equal to,

G(x) =[tex]\int_{1}^{x}[/tex]  [(t² + 1 ) / t² ] dt

Let's assume that the profit per kilogram of premium coffee is p dollars.

And total production of premium coffee is y kilograms per day.

Total profit from premium coffee is P = p × y

Company produces a total of 4000 kilograms of coffee per day.

⇒ y = 4000 - x

x = production of traditional coffee in kilograms per day.

Total profit for the company is,

T = G(x) + P

Substituting the expressions for P and y,

T = G(x) + p × (4000 - x)

Company's daily profit from producing traditional coffee =  $13,500

⇒ 13,500 = G(x) + 4 × x

Substituted the marginal profit of $4 per kilogram for traditional coffee.

Profit per kilogram of premium coffee, p, in terms of x is equal to,

⇒ T = G(x) + p × (4000 - x)

⇒ 13,500 = G(x) + p×(4000 - x)

⇒ 13,500 =    [tex]\int_{1}^{x}[/tex][(t² + 1 ) / t² ] dt + p×(4000 - x)

⇒ 13,500 = [x - (1/x)] + p× (4000 - x)

⇒13,500 = x - (1/x) + 4000p - px

⇒ 13,500 = (1-p)x - (1/x) + 4000p

p = (13,500 + (1/x) - x)/(4000 - x)

Function for daily profit associated with the production of premium coffee is,

T = G(x) + (13,500 + (1/x) - x)/(4000 - x) × (4000 - x )

Simplifying we get,

⇒ T = G(x) + (13,500 + (1/x) - x)

Therefore, the function for daily profit associated with the production of premium coffee is equal to

T = [tex]\int_{1}^{x}[/tex]  [(t² + 1 ) / t² ] dt +  (13,500 + (1/x) - x)

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The above question is incomplete , the complete question is:

A coffee processing company produces 4,000 kilograms of traditional coffee per day, obtaining a daily profit of 13,500 dollars and a marginal profit of 4 dollars per kilo 1. An administrator proposes to change the production of traditional coffee to premium coffee, the administrator affirms that the function of daily profit associated with the production of excel so coffee is:

G(x) = [tex]\int_{1}^{x}[/tex] [(t² + 1 ) / t² ] dt

The access to a full is [tex]23[/tex] m in height.

Height is a measurement of vertical distance, or how high or some someone is (how tall they were) "The altitude of an aircraft in flight is around 10,000 m," for instance.

Ensure that your shoulders are level, arms are at your sides, and legs are straight. The youngster or adolescent should maintain a straight gaze that is parallel to the ground. Measure the kid or adolescent when they are standing with their head, shoulders, buttocks, & heels on a flat surface.

The calculation of the total screen height is displayed below;

[tex]= a + b[/tex]

where

[tex]a = 21 * tan 17[/tex] degrees

[tex]= 21 * 0.305[/tex]

[tex]= 6.4 m[/tex]

And

[tex]b = 21 * tan 38[/tex] degree

[tex]= 21 * 0.781[/tex]

[tex]= 16.4 m[/tex]

So, the height of the entire screen is

[tex]= 6.4 m + 16.4 m[/tex]

[tex]= 22.8 m[/tex]

[tex]= 23 m[/tex]

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Answer:

x° = 80

Step-by-step explanation:

Remember a line is 180°

Because B is = 100°

B and x are interior angles meaning B + x = 180°

100° + x = 180°

x = 80°

Answer:

80 °

Step-by-step explanation:

[tex]\frac{360-2*100}{2} = 80[/tex]

Answer:

-51706

Step-by-step explanation:

when working with negative numbers, the number of greater size will be smaller.

The best estimate οf the number οf problems she missed is 12

When sοlving a number prοblem, yοu are provided with hints about one or more numbers, and you must use these hints to create an equation. The Problem-Solving Strategy can be practised with number problems, which don't occur frequently but are a gοod starting point.

To find the best estimate οf the number of problems Carrie missed, we can start by calculating what 9.6% of 125 is:

9.6% οf 125 = 0.096 x 125 = 12

This means that Carrie missed apprοximately 12 problems on the test. Therefore, the best estimate of the number of problems she missed is 12.

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Complete Questiοn:

Carrie missed 9.6% οf the problems on a test. The test had a total of 125 problems. Which of the following is the best estimate of the number of problems Carrie missed? F 123 G 13 H2 3 113 OPEN ENDED QUESTION This is a proportion question: What numbers would you fill into the ratios? 6 d a= b= C= ulube d='

Answer:

Step-by-step explanation:

140/0.35squared

=1142.857142

to 1 d,p=1142.9

[tex]\textit{arc's length}\\\\ s = \cfrac{\theta \pi r}{180} ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=4\\ \theta =312 \end{cases}\implies s=\cfrac{(312)\pi (4)}{180}\implies s=\cfrac{104\pi }{15}\implies s\approx 21.8[/tex]

A scatter plot of the data is shown below.

An equation of a reasonable trend line is y = x - 0.1.

The arm span of someone who is 1.6 m tall is 1.5 meter.

The arm span of someone who is 2.2 m tall is 2.1 meters.

In order to write a linear equation for the line of best fit (trend line) that models the data points contained in the table, we would have to use a graphing calculator (scatter plot).

In this scenario, the heights would be plotted on the x-axis of the scatter plot while the arm span would be plotted on the y-axis of the scatter plot.

At point (2.0, 1.9), an equation of this line can be calculated by using the point-slope form:

y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

y - 1.9 = (2.0 - 1.9)/(2.1 - 2.0)(x - 2.0)

y - 1.9 = (x - 2.0)

y = x - 0.1.

For someone who is 1.6 m tall, their arm span is given by;

y = x - 0.1

y = 1.6 - 0.1.

x = 1.5 meter.

For someone who is 2.2 m tall, their arm span is given by;

y = x - 0.1

y = 2.2 - 0.1.

x = 2.1 meters.

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Answer:

47.5

Step-by-step explanation:

We know that a semicircle is half the area of a circle so to answer this question we can simply find the area of a circle with a diameter of 11cm and then half it!

The area of a circle can be found using the equation: πr²

The radius of the circle would be 5.5cm as we have to be half the diameter.

This means to work it out we would be doing...

Now we have to half it...

Hope this helps, have a lovely day! :)

If the equation j=0. 239c, the food that contains 200 calories provides 47.8 joules of energy.

To convert the energy in calories to joules using the equation j = 0.239c, we can simply substitute the given value of c (200 calories) into the equation and solve for j:

j = 0.239c

j = 0.239 x 200

j = 47.8 joules

It's important to note that joules are the standard unit of energy in the International System of Units (SI), while calories are more commonly used in nutrition and food science.

The conversion factor between joules and calories is not exact, as it depends on the definition of the calorie used.

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Complete question is:

Joules and calories are two different units of energy. The equation j=0. 239c relates the measures, where c stands for calories and j stands for joules. If a food contains 200 calories, how many joules of energy does it provide?

The probability of obtaining more than 3 events in a Poisson random variable with a mean of λ = 0.8 and a time period of t = 5 is approximately 0.3272 or 32.72%.

To determine the probability of obtaining more than 3 events in a Poisson random variable with a mean of λ = 0.8 and time period of t = 5, we can use the Poisson probability distribution formula, which is:

P(X > k) = 1 - P(X ≤ k)

= 1 - e^(-λ) * ∑(i=0 to k) (λ^i / i!)

where X is the Poisson random variable, k is the number of events, λ is the mean or expected number of events, and e is the mathematical constant approximately equal to 2.71828.

In this case, we want to find P(X > 3), which means we need to compute P(X ≤ 3) first:

P(X ≤ 3) = e^(-λ) * ∑(i=0 to 3) (λ^i / i!)

= e^(-0.8) * [1 + 0.8 + (0.8^2 / 2!) + (0.8^3 / 3!)]

= 0.6728

Then, we can find P(X > 3) using the formula:

P(X > 3) = 1 - P(X ≤ 3)

= 1 - 0.6728

= 0.3272

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Ruben ordered 0 boxes of cards and Estelle ordered 2 boxes of cards. Ruben spent $8 and Estelle spent $20 + $6(2) = $32.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

Let's start by setting up equations for the total cost of Ruben and Estelle's business cards. Let R be the number of boxes of cards Ruben ordered and E be the number of boxes Estelle ordered. Then we have:

Ruben's cost = 8 + 18R

Estelle's cost = 6E + 20

We know that Ruben and Estelle spent the same amount, so we can set their costs equal to each other and solve for R and E:

8 + 18R = 6E + 20

18R - 6E = 12

3R - E = 2

This equation tells us that Ruben ordered two more boxes of cards than Estelle. We can use trial and error to find the values of R and E that satisfy this equation and give us the same cost:

If R = 4 and E = 2, then Ruben's cost = 8 + 18(4) = 80 and Estelle's cost = 6(2) + 20 = 32, which are not equal.

If R = 3 and E = 1, then Ruben's cost = 8 + 18(3) = 62 and Estelle's cost = 6(1) + 20 = 26, which are not equal.

If R = 2 and E = 0, then Ruben's cost = 8 + 18(2) = 44 and Estelle's cost = 6(0) + 20 = 20, which are not equal.

If R = 1 and E = -1, then Ruben's cost = 8 + 18(1) = 26 and Estelle's cost = 6(-1) + 20 = 14, which are not equal.

If R = 0 and E = -2, then Ruben's cost = 8 + 18(0) = 8 and Estelle's cost = 6(-2) + 20 = 8, which are equal.

Therefore, Ruben ordered 0 boxes of cards and Estelle ordered 2 boxes of cards. Ruben spent $8 and Estelle spent $20 + $6(2) = $32.

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