A sparrow is flying 12 metres away from a bird
box that is on top of a pole.
The angle of depression from the sparrow to the
base of the pole is 35º.
What is the distance between the sparrow and
the base of the pole?
Give your answer to 2 d.p.



Someone pls help

Answer:

1.5kg = 1500g

Step-by-step explanation:

1.5 x 10^3 = 1500

The chromatic number of a graph is the minimum number of colors needed to color the vertices of the graph such that no two adjacent vertices have the same color.

To find the chromatic number of each of the given graphs, we need to first examine the structure of the graphs and identify any vertices that are adjacent to each other.

1) Graph 1:
This is a complete graph with 5 vertices, which means that every vertex is adjacent to every other vertex. To color this graph, we need to use at least 5 colors since no two adjacent vertices can have the same color. This is because each vertex is adjacent to every other vertex, and so each vertex needs a unique color. Therefore, the chromatic number of Graph 1 is 5.
2) Graph 2:
This is a cycle graph with 6 vertices. To color this graph, we can start at any vertex and color it with one color. Then, we move to the next vertex and color it with a different color, and continue this process until we reach the last vertex. However, since the first and last vertices are adjacent, they must be colored with different colors. Therefore, we need at least 2 colors to color this graph. Thus, the chromatic number of Graph 2 is 2.

3) Graph 3:
This is a bipartite graph with 6 vertices and 2 disjoint sets of vertices. To color this graph, we can divide the vertices into 2 sets such that no vertices in the same set are adjacent. Then, we can color the vertices in each set with the same color. Since there are only 2 sets, we only need 2 colors to color this graph.

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The value of y = 24 and the value of x = 14

The two triangles That we have in the question are similar:

such that

∆JKL ~ ∆QRS

From basic triangle knowledge

Corresponding sides of similar figures have same ratio.

We will have to Use ratios to find the missing values.

In ortder to Find y:

QR/JK = QS/JL

such that

y/16 = 36/24

y/16 = 1.5

y = 16*1.5

Therefore we have

y = 24

Next we have to Find x using the similar method:

KL/RS = JL/QS

We have to input the values such that

x/21 = 24/36

x/21 = 2/3

x = 21*2/3

x = 14

Hence the value of y = 24 and the value of x = 14

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The solution of the logarithmic equation is x = 3e

Here we want to solve the equation:

Ig(2x) - Ig(x-3) = 1​

We can write the left part as a logarithm of the quotient between the arguments, then we will have:

lg(2x/(x - 3)) = 1

Now we can apply the exponential equation, then we will get:

exp(lg(2x/(x - 3))) = exp(1)

2x/(x - 3) =  e

2x = 3x - 3e

3e = 3x - 2x

3e = x

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The length of arc AB in terms of pi is 16pi.

We have,

To find the length of the arc AB in terms of pi, we can use the formula:

Length of arc = (angle intercepted by arc / 360 degrees) * (circumference of the circle)

Given:

Diameter = 32 (which means the radius is half of the diameter, so the radius is 32/2 = 16)

Angle intercepted by arc AB = 180 degrees

First, we need to find the circumference of the circle using the formula:

Circumference = 2 x pi x radius

Circumference = 2 x pi x 16 = 32 x pi

Now, we can calculate the length of arc AB:

Length of arc AB = (180 / 360) x (32 x pi)

Simplifying:

Length of arc AB = (1/2) x (32 x pi)

Length of arc AB = 16 x pi

Therefore,

The length of arc AB in terms of pi is 16pi.

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The number of students that were interviewed include the following: B. 96.

In Mathematics and Statistics, a population refers to a set of similar items or events that comprises every member of a group and from which a researcher, scientist, or experimenter, obtains or generates data for a statistical study.

In Statistics and science, a sample is a set of data that is collected from a population based on a well-defined sampling procedure.

In this context, we can reasonably infer and logically deduce that the total number of students that were interviewed can be calculated as follows;

Total number of students interviewed = 13 + 30 + 20 + 33

Total number of students interviewed = 96 students.

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

the conclusion is:

these graphs are not isomorphic.

Here are the steps to determine whether the given pair of graphs are isomorphic:

Check if the number of vertices in each graph is the same. If they have a different number of vertices, they cannot be isomorphic.

Compare the degrees of vertices in each graph. If the degrees of vertices in one graph match the degrees of vertices in the other graph, it suggests the possibility of isomorphism.

Look for any specific structural properties or characteristics that are unique to one graph and not present in the other. These differences can indicate that the graphs are not isomorphic.

Based on the provided statements:

"The second graph has a vertex of degree 4, while the first graph does not."

This difference in degrees indicates that the graphs are not isomorphic.

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We can take any integer value greater than or equal to 3.

The domain of v, which represents the radius of the inner cylinder, is determined by the condition that it must be an integer greater than or equal to 3. Therefore, the domain can be defined as v ≥ 3, indicating that v can take any integer value greater than or equal to 3. This restriction ensures that the radius of the inner cylinder falls within the specified range. It allows for a range of possible values for v while ensuring that it meets the requirements set by the problem.

The domain of v would depend on the specific context or problem statement. However, based on the information provided, we can infer the following:

If v represents the radius of the inner cylinder, it must be an integer greater than or equal to 3. Therefore, the domain of v would be:

v ≥ 3

This means that we can take any integer value greater than or equal to 3.

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The cost of painting the inside of the open rectangular box at ₦90 per square meter is ₦216.

We have,

To find the cost of painting the inside of the open rectangular box, we need to calculate the surface area of the box and then multiply it by the cost per square meter.

So,

Given the dimensions provided,

Length = 1m

Width = 70cm = 0.7m

Depth = 50cm = 0.5m

To calculate the surface area, we need to consider the four inner faces of the box: the bottom, the front, the back, and the sides.

The area of the bottom face: Length * Width = 1m x 0.7m = 0.7m²

The area of the front face: Length * Depth = 1m x 0.5m = 0.5m²

The area of the back face (same as the front): 0.5m²

The area of the left side face: Width * Depth = 0.7m x 0.5m = 0.35m²

The area of the right side face (same as the left): 0.35m²

To find the total surface area, we sum up all these areas:

Total surface area = bottom + front + back + left + right

= 0.7m² + 0.5m² + 0.5m² + 0.35m² + 0.35m²

= 2.4m²

Now, we can calculate the cost by multiplying the surface area by the cost per square meter:

Cost = Total surface area x Cost per square meter

= 2.4m² x ₦90/m²

= ₦216

Therefore,

The cost of painting the inside of the open rectangular box at ₦90 per square meter is ₦216.

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The statement "Climatic Influences on American Architecture." is false.

While both sources may discuss aspects of architecture in relation to weather conditions, they do not necessarily both note how an architect must consider a cold weather climate in their design.

The article "Weathering the Storm" specifically focuses on how architects can design buildings to withstand extreme weather conditions, including hurricanes, floods, and wildfires. It does not delve into the specifics of designing for a cold weather climate. On the other hand, the excerpt from "Climatic Influences on American Architecture" does discuss designing for a cold climate. It notes that cold weather conditions affect building design and that architects must consider insulation, thermal mass, and orientation of buildings to minimize heat loss.

So, while "Climatic Influences on American Architecture" notes how architects must consider a cold weather climate in their design, Weathering the Storm does not. Overall, it is important to read sources carefully to understand how they address a specific topic.

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Answer:

this is ans

Step-by-step explanation:

pls mark as brainliest .

The slope of this line is equal to -3/4.

In Mathematics and Geometry, the slope of any straight line can be determined by using the following mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = rise/run

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

By substituting the given data points into the formula for the slope of a line, we have the following;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-2 - 1)/(2+ 2)

Slope (m) = -3/4

Based on the graph, the slope is the change in y-axis with respect to the x-axis and it is equal to -3/4 or -0.75.

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The Laplace transform of 4t^3e^(-4t) - e^(2t)cos(t) is 6/(s^4 * (s+4)) + (s - 2) / ( (s - 2)^2 + 1 ).

To find the Laplace transform of the given function, we can break it down into two parts: 4t^3e^(-4t) and -e^(2t)cos(t).

Using the linearity property of the Laplace transform, we can separately find the transforms of these two parts and then add them together.

Transform of 4t^3e^(-4t):

Using the table, the transform of t^n is n!/s^(n+1).

So, the transform of t^3 is 3!/s^4 = 6/s^4.

The transform of e^(-4t) is 1/(s+4) (from the table).

Multiplying these two transforms, we get (6/s^4) * (1/(s+4)) = 6/(s^4 * (s+4)).

Transform of -e^(2t)cos(t):

The transform of e^(at)cos(bt) is s - a / ( (s - a)^2 + b^2 ) (from the table).

Here, a = 2 and b = 1. So, the transform of -e^(2t)cos(t) is

s - 2 / ( (s - 2)^2 + 1^2 ) = (s - 2) / ( (s - 2)^2 + 1 ).

Finally, adding the two transforms together, we get the Laplace transform of the given function as:

6/(s^4 * (s+4)) + (s - 2) / ( (s - 2)^2 + 1 ).

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The matrix A is diagonalizable, and the matrix P = [1 -3; 0 1] diagonalizes matrix A, You can follow the same steps to find the matrix P and compute [tex]P^(^-^1^)AP[/tex] for exercises 6, 7, and 8 using the given matrices A.

To find a matrix P that diagonalizes matrix A and check the work by computing [tex]P^(^-^1^)AP[/tex], we need to follow the steps mentioned earlier. Here are the solutions for exercises 5-8: 5. A = [1 6; 0 -1]

To diagonalize matrix A, we need to find the eigenvalues and eigenvectors.

The characteristic equation is |A - λI| = 0, where I is the identity matrix.

|1-λ  6 |

| 0  -1-λ| = (1-λ)(-1-λ) = 0

Solving the equation, we find two eigenvalues:

λ₁ = 1

λ₂ = -1

For each eigenvalue, we solve the equation (A - λI)v = 0 to find the corresponding eigenvectors.

For λ₁ = 1:

(A - λ₁I)v₁ = 0

|0  6 | v₁ = 0

|0 -2 |

Solving the equation, we find the eigenvector v₁ = [1 0].

For λ₂ = -1:

(A - λ₂I)v₂ = 0

|2  6 | v₂ = 0

|0  0 |

Solving the equation, we find the eigenvector v₂ = [-3 1].

Matrix P is constructed by arranging the eigenvectors v₁ and v₂ as columns.

P = [v₁ v₂] = [1 -3; 0 1]

To compute the inverse of matrix P, we can use the inverse formula for a 2x2 matrix: [tex]P^(^-^1^)[/tex] = (1/(ad - bc)) * [d -b; -c a], where P = [a b; c d]

In this case, [tex]P^(^-^1^)[/tex] = [1/3 1/3; 0 1]

Now, we can compute P^(-1)AP to check if it is a diagonal matrix.

[tex]P^(^-^1^)AP = [1/3 1/3; 0 1] * [1 6; 0 -1] * [1 -3; 0 1][/tex] = [1 0; 0 -1] = Diagonal matrix

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A company pays $5,000 for equipment. The book value of the equipment at the end of Year 2 will be $4,000.

The book value of an asset can be calculated by subtracting the accumulated depreciation from the initial cost of the asset.

Given:

Initial cost of the equipment = $5,000

Annual depreciation = $500

After Year 1, the accumulated depreciation would be $500.

So, the book value at the end of Year 1 would be:

Book value at the end of Year 1 = Initial cost - Accumulated depreciation

Book value at the end of Year 1 = $5,000 - $500 = $4,500

After Year 2, the accumulated depreciation would be $500 + $500 = $1,000 (since depreciation is $500 per year).

So, the book value at the end of Year 2 would be:

Book value at the end of Year 2 = Initial cost - Accumulated depreciation

Book value at the end of Year 2 = $5,000 - $1,000 = $4,000

Therefore, the book value of the equipment at the end of Year 2 is $4,000. Hence, the correct answer is option a. $4,000.

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The fee charged for the R 2, 500 withdrawal from TownBank would be R 33. 30.

To find the total fee charged to withdraw the sum of R 2, 500 from TownBank, the formula is :

= 3. 30 + R 1, 20 per R 100

The amount withdrawn was R 2, 500 so the total fee charged would be :

= 3. 30 + 1, 20 x ( 2, 500 / 100 )

= 3. 30 + 1. 20 x 25

= 3. 30 + 30

= 33. 30

= R 33. 30

In conclusion, the total fee charged was R 33. 30.

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First part of the question :

The TownBank current account charges R3,30 plus R1,20 per R100 or part thereof for a cash withdrawal from a TownBank ATM. The first five withdrawals in a month are free. Determine the bank charges for a withdrawal of:

i) The probability of the selected adult being overweight is 0.275.

ii) The probability of the selected adult being overweight or suffering from hypertension is 0.3.

iii) The probability of the selected adult being overweight given that they suffer from hypertension is 0.75.

iv) The events "overweight" and "suffering from hypertension" are not independent because their joint probability does not equal the product of their individual probabilities. They are also not mutually exclusive since there are individuals who belong to both categories.

i) To find the probability of an adult being overweight, we sum the probabilities of the two cases where they are overweight: (9 + 2) / (9 + 2 + 11 + 78) = 0.275.

ii) To find the probability of an adult being overweight or suffering from hypertension, we sum the probabilities of the three relevant cases: (9 + 11 + 2) / (9 + 2 + 11 + 78) = 0.3.

iii) To find the probability of an adult being overweight given that they suffer from hypertension, we divide the number of overweight individuals who also have hypertension by the total number of individuals with hypertension: 9 / (9 + 11) = 0.75.

iv) The events "overweight" and "suffering from hypertension" are not independent. Two events are independent if the joint probability equals the product of their individual probabilities. In this case, (9 / 100) * (20 / 100) ≠ (9 / 100), so they are dependent. Furthermore, they are not mutually exclusive since there are individuals who are both overweight and suffer from hypertension.

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The speed of wave pulses on the rope remains the same when the tension in a taut rope is increased by a factor of 9 and the linear density is decreased by a factor of 9.

The speed of wave pulses on a rope is determined by the tension and the linear density of the rope. The wave speed is given by the equation v = √(T/μ), where v is the wave speed, T is the tension in the rope, and μ is the linear density of the rope.

In this scenario, the tension in the rope is increased by a factor of 9. Since the wave speed is directly proportional to the square root of the tension, increasing the tension by a factor of 9 would result in an increase in the wave speed by a factor of √9, which is 3. However, simultaneously, the linear density of the rope is decreased by a factor of 9. The wave speed is inversely proportional to the square root of the linear density, so decreasing the linear density by a factor of 9 would result in a decrease in the wave speed by a factor of √(1/9), which is 1/3.

The increase in tension and decrease in linear density have opposite effects on the wave speed, with one increasing it and the other decreasing it. Since these effects cancel each other out, the net result is that the speed of wave pulses on the rope remains unchanged. Therefore, the correct answer is that the speed remains the same

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To approximate the area under the graph of f(x) = 1/x^2 over the interval [2, 4] using four equal subintervals and the right endpoint method, we can use the following formula:

Approximate Area = Δx * [f(x1) + f(x2) + f(x3) + f(x4)]

where Δx is the width of each subinterval and xi represents the right endpoint of each subinterval.

In this case, the interval [2, 4] is divided into four equal subintervals, so Δx = (4 - 2) / 4 = 0.5.

Now, let's evaluate the function at the right endpoints of the subintervals:

f(2.5) = 1/(2.5)^2 = 0.16

f(3) = 1/(3)^2 = 0.1111

f(3.5) = 1/(3.5)^2 = 0.0816

f(4) = 1/(4)^2 = 0.0625

Substituting these values into the formula:

Approximate Area = 0.5 * [0.16 + 0.1111 + 0.0816 + 0.0625]

Approximate Area = 0.5 * 0.4152

Approximate Area = 0.2076

Therefore, the approximate area under the graph of f(x) = 1/x^2 over the interval [2, 4] using four equal subintervals and the right endpoint method is approximately 0.2076.

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The surface area of the prism formed by the net is 538 square feet².

The area occupied by the surfaces of an object is called its surface area. In geometry, different 3D shapes have different surface areas which can be easily calculated using the formula:

[tex]\boxed{\bold{\sf SA= 2 \times(lw + wh + lh)}}[/tex]

Let,

So,

[tex]\sf SA= 2\times(45+80+144)[/tex]

[tex]\sf SA =2\times269[/tex]

[tex]\sf SA =\bold{538 \ square \ feet^2}[/tex]

Thus, the surface area of the prism formed by the net is 538 square feet².

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The solutions of the given quadratic equation are x=8.3 and x=-9.6.

From the given figure, we have length=(3x+4) inches and breadth=x inches.

We know that, area of a rectangle = Length×Breadth

Given that, area of a rectangle = 240 square inches

(3x+4)×x=240

3x²+4x=240

3x²+4x-240=0

By quadratic formula, we have

a=3, b=4 and c=-240

x=-4±√(16+2880)/6

x= (-4±53.8)/6

x=8.3 and x=-9.6

Therefore, the solutions of the given quadratic equation are x=8.3 and x=-9.6.

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Answer:

x=-4, y=-1

Step-by-step explanation:

Given the following system of equations, solve the system using elimination.

[tex]\left \{ {{-2x-y=9} \atop {2x-9y=1}} \right.[/tex]

(1) - Add the equations together

[tex]\left\begin{array}{ccc}&-2x-y=9\\+&2x-9y=1\end{array}\right\\\\\Longrightarrow -10y=10\\\\\therefore \boxed{y=-1}[/tex]

Notice how the x term was eliminated, hence the name for this method is "elimination."

(2) - Take the value we just found for y and plug it into either of the two equations and solve for x

[tex]2x-9y=1\\\\\Longrightarrow 2x-9(-1)=1\\\\\Longrightarrow 2x+9=1\\\\\Longrightarrow 2x=-8\\\\\therefore \boxed{x=-4}[/tex]

(3) - Thus, the system is solved. When x=-4, y=-1.

The new image will be formed 60 cm on the same side of the lens as the object. The image will be real and inverted, as indicated by the positive value for v'

Given m = -1, we can solve for v in terms of u (or vice versa), and we find that v = -u. This means the object and image are the same distance from the lens, but on opposite sides.

Since the distance between the object and image is 60 cm (total), we know that each must be 30 cm from the lens (since they are equidistant from the lens).

Therefore, u = -30 cm and v = 30 cm (taking the convention that distances measured in the direction of light propagation are positive).

The lens formula, which relates the object distance (u), the image distance (v), and the focal length (f) of a lens, is given by:

1/f = 1/v - 1/u

Substituting the values we found for v and u:

1/f = 1/30 cm - 1/-30 cm = 2/30 cm = 1/15 cm

So, f = 15 cm.

Next, if the object is moved 20 cm towards the lens, the new object distance will be u' = -30 cm + 20 cm = -10 cm.

Substituting into the lens formula to find the new image distance:

1/f = 1/v' - 1/u'

1/15 cm = 1/v' - 1/-10 cm

1/15 cm + 1/10 cm = 1/v'

(2 + 3) / (30 * 10) = 1/v'

5/300 = 1/v'

v' = 300/5 = 60 cm

The new image will be formed 60 cm on the same side of the lens as the object. The image will be real and inverted, as indicated by the positive value for v' (according to the convention we chose).

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Answer:

b = -105

Step-by-step explanation:

Normally, the direct variation equation involves multiplication and is given by:

y = kx, where

Furthermore, the normal inverse variation equation involves division and is given by:

y = k/x, where

To combine direct and inverse variation, we need to use combined variation:

Step 1:  Thus, the entire equation representing a varying directly as b and a varying inversely as c is given by:

a = (kb)/c

Step 2:  Before we can find b, we need to find k using the info we're given.  Since we're told that b = 15 when c = 2 and a = 4, we can plug these values into the combined variation equation to solve for k, the constant of proportionality

4 = (15k)/2

8 = 15k

8/15 = k

Step 3:  Now we can plug in 8/15 for k, 7 for a, and -8 for c into the combined variation equation, allowing us to solve for b:

7 = (8/15b)/-8

-56 = 8/15b

-105 = b

Thus, b = -105, when a = 7 and c = -8 (and only when k = 8/15)

Answer:

Your answer is: Point T

Step-by-step explanation:

I hope this helps!
Have a peaceful day or night!

The given matrix does not have an inverse because its determinant is zero, indicating that the matrix is singular.

To find the inverse of a matrix, we typically perform row operations to transform the given matrix into the identity matrix. However, in this case, we encounter a problem since the determinant of the given matrix is zero. A matrix is invertible if and only if its determinant is nonzero.

Using the provided algorithm, let's set up the augmented matrix:

[A | I] = [1 0 3 1 0 0 | 1 0 0]

         [3 1 4 0 1 0 | 3 1 0]

         [4 2 4 0 0 1 | -4 2 4]

Now, we can apply row operations to reduce the matrix [A | I] to row-echelon form or obtain zeros in the lower left corner. However, no matter what row operations we perform, we will not be able to eliminate all the nonzero elements in the last column, resulting in an inconsistent system

This indicates that the given matrix is singular, meaning it does not have an inverse. The determinant of the matrix is zero, which implies that the columns of the matrix are linearly dependent, and the matrix cannot be inverted.

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The median number of vehicles going through the bank drive-up line in a 15-minute period is 27 vehicles.

To find the median, we need to arrange the recorded number of vehicles in ascending order. The given data set is: 15, 20, 24, 25, 25, 25, 25, 27, 27, 27, 27, 28, 28, 29, 30, 31, 31, 31, 35. There are 19 values in the data set, so the middle value is the 10th value. In this case, the median is 27, as it is the value that separates the lower half of the data set from the upper half.

To calculate the median, we arrange the data set in ascending order: 15, 20, 24, 25, 25, 25, 25, 27, 27, 27, 27, 28, 28, 29, 30, 31, 31, 31, 35. The middle value is the 10th value, which is 27. Therefore, the median number of vehicles going through the bank drive-up line in a 15-minute period is 27 vehicles.

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The chromatic number of the graph K33, which is a complete bipartite graph with 33 vertices, each connected to every vertex in the other set, is 2. This means that the graph can be colored using only two colors.

The chromatic number of a graph represents the minimum number of colors needed to color its vertices such that no adjacent vertices have the same color.

In the case of K33, the graph is a complete bipartite graph, which means it can be divided into two sets of vertices, where each vertex in one set is connected to every vertex in the other set. In this specific graph, we have 33 vertices in each set.

To determine the chromatic number, we observe that in a complete bipartite graph, no vertices within the same set are connected to each other. Therefore, we can assign one color to all the vertices in one set and a different color to all the vertices in the other set.

In K33, we can color one set of 33 vertices, let's say set A, with color 1, and the other set of 33 vertices, set B, with color 2. Since no vertices within the same set are connected, there will be no adjacent vertices with the same color.

Hence, we conclude that the chromatic number of the graph K33 is 2, as it can be colored using only two colors.

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