Here's a box plot that summarizes the number of pens in each student's desk. A horizontal boxplot is plotted along a horizontal axis marked from 0 to 14, in increments of 1, labeled Number of pens. A left whisker extends from 0 to 2. The box extends from 2 to 6 and is divided into 2 parts by a vertical line segment at 4. The right whisker extends from 6 to 12. All values estimated. A horizontal boxplot is plotted along a horizontal axis marked from 0 to 14, in increments of 1, labeled Number of pens. A left whisker extends from 0 to 2. The box extends from 2 to 6 and is divided into 2 parts by a vertical line segment at 4. The right whisker extends from 6 to 12. All values estimated. Find the interquartile r

Answer: 5.4

Step-by-step explanation:

First, start with adding the two given sides, then take that sum and subtract it from the perimeter, then after that, divide by two

1 + 3.8= 4.8  

15.6 - 4.8=10.8

10.8 / 2 = 5.4

The length of the third side of the triangle must be less than the sum of the two other sides given.

k < 10 cm.

The possible lengths of the triangle is determined from the rules of length of a triangle.

The rule of lengths of triangle states that the length of one side of a triangle must be greater than the difference and less than the sum of the lengths of the other two sides.

Let the third side of the triangle = k

The possible values of k is determined as;

k < ( 3 cm + 7 cm)

k < 10 cm

Thus, the length of the third side of the triangle must be less than the sum of the two other sides given.

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The final simplified expression: 30 + 20 = 50 the Simplified form of the expression 18 - 9 × (-4) ÷ 3 + 10 × 2 is 50.

The expression 18 - 9 × (-4) ÷ 3 + 10 × 2, we follow the order of operations (also known as PEMDAS: Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction) to perform the operations in the correct order.

First, we simplify the multiplication and division from left to right:

9 × (-4) ÷ 3 = -36 ÷ 3 = -12

Now we have the expression: 18 - (-12) + 10 × 2

Next, we perform the subtraction and addition from left to right:

18 - (-12) = 18 + 12 = 30

Now we have the expression: 30 + 10 × 2

Finally, we perform the multiplication:

10 × 2 = 20

Now we have the final simplified expression: 30 + 20 = 50 the simplified form of the expression 18 - 9 × (-4) ÷ 3 + 10 × 2 is 50.

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Answer:

0.63

Step-by-step explanation:

We have the following information:

The probability of a student being male is 0.45.

The probability of a student having a job off-campus is 0.33.

The probability of a student being male and having a job off-campus is 0.15.

Now, we want to find the probability that a student is either male or has an off-campus job.

To do this, we add the probability of being male (0.45) to the probability of having an off-campus job (0.33). However, we need to be careful not to count the students who are both male and have an off-campus job twice. So, we subtract the probability of being male and having an off-campus job (0.15) once.

By doing this, we account for all the possible cases and get the probability that a student is either male or has an off-campus job.

Calculating the values:

P(Male or Off-campus job) = P(Male) + P(Off-campus job) - P(Male and Off-campus job)

= 0.45 + 0.33 - 0.15

= 0.63

Therefore, the probability that a student chosen at random from the college is male or has an off-campus job is 0.63.

Hope this helps!

The linear combination of the standard unit vectors i and j for the given initial and terminal points is 9i + 20j.

To find the linear combination of the standard unit vectors i and j, we need to determine the components of the vector that connects the initial point to the terminal point.

Given:

Initial Point: (0, -8)

Terminal Point: (9, 12)

To find the linear combination, we subtract the coordinates of the initial point from the coordinates of the terminal point:

So, Terminal Point - Initial Point

= (9, 12) - (0, -8)

= (9 - 0, 12 - (-8))

= (9, 20)

Therefore, the linear combination of the standard unit vectors i and j for the given initial and terminal points is 9i + 20j.

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Answer:

[tex]\huge\boxed{\sf x = 130\°}[/tex]

Step-by-step explanation:

So,

90 + 90 + 50 + x = 360

230 + x = 360

x = 360 - 230

[tex]\rule[225]{225}{2}[/tex]

The solution is: The arc length SR is 52.12ft.

We have,

Arc length is the distance between two points along a section of a curve. An arc is a cut out section of a circumference of a circle.

The arc angle = sector angle in the diagram

The length of an arc is expressed as;

l = tetha/360 × 2πr

where r is the radius and tetha is the angle between the two radii.

l = 332/360 × 2 × 9 × 3.14

l = 1042.48 × 18/360

l = 18764.64/360

l = 52.12( nearest hundredth)

therefore the length of the arc is 52.12 ft

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The scale factor of the perimeters from figure A to figure B is 1.5. Scale factor is the ratio of any two corresponding lengths in two similar figures.

Here, the two figures are similar, that is why we can find the scale factor by dividing corresponding sides of one figure by the corresponding sides of another figure. We will find the scale factor for the perimeter of figures A and B below:Perimeter of figure A = 12 + 10 + 18 = 40 unitsPerimeter of figure B = 15 + 15 + 15 = 45 unitsTo find the scale factor of the perimeters, we divide the perimeter of figure B by the perimeter of figure

A:Scale factor of the perimeters = (Perimeter of figure B)/(Perimeter of figure A) = 45/40 = 1.125To simplify any fractional answer, we have to convert it to the lowest terms, which is 9/8. The decimal answer 1.125, when rounded to the nearest tenth is 1.1. Therefore, the scale factor of the perimeters from figure A to figure B is 1.5.

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The volume of the given triangular pyramid is 59.2 feet³.

Given figure is that of a triangular pyramid.

We have to find the volume of the pyramid.

Volume of a pyramid = 1/3 × base area × height

Here base is triangular.

Base area = 1/2 × 12 × 3.7

                  = 22.2 feet²

Height of the pyramid = 8 feet

Volume = 1/3 × 22.2 × 8

             = 59.2 feet³

Hence the volume is 59.2 feet³.

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The perimeter of this parallelogram is equal to 32.4 units.

In Mathematics and Geometry, the perimeter of a parallelogram can be calculated by using this mathematical equation (formula);

P = 2(L + W)

Where:

For the length, we have:

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

Distance = √[(-5 + 4)² + (-3 - 2)²]

Distance = √26

Distance = 5.1 units

For the width, we have:

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

Distance = √[(7 + 4)² + (3 - 2)²]

Distance = √122

Distance = 11.1 units.

P = 2(5.1 + 11.1)

P = 2(16.2)

P = 32.4 units.

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Answer:

net salary = 8047.5

Step-by-step explanation:

his basic salary is 8700

7.5% of that is (8700)(0.075) = 652.5

He gives this away, so his net salary will become

8700 - 652.5 = 8047.5 = net salary

Answer:

55

Step-by-step explanation:

You just need to divide 220 ÷ 4 = 55

Hope this helps :)

Pls brainliest...

Answer:

Step-by-step explanation:

[tex]a+b=(3i+4j)+(-2i+5j)[/tex]

        [tex]=3i+4j-2i+5j[/tex]

        [tex]=1i+9j[/tex]

Answer:

The statement that is NOT always true about matrices A, B, and C is:

C. If A is singular, then its transpose is also singular.

Step-by-step explanation:

A matrix A is singular if and only if its determinant is zero. However, the transpose of a matrix does not necessarily have the same determinant as the original matrix. So, it is possible for a matrix A to be singular while its transpose is non-singular. Therefore, statement C is not always true.

Al the nth term are,

1) a (n) = 6 + 4n

2) a (n) = 26 + 8n

3) a (n) = 23 - n

4) a (n) = 7n - 3

5) a (n) = 8n - 43

We have to given that;

All the sequence are,

1.10,14,18,22..

2.34,26,18,10,..

3.17;11;5;-1;-7;..

4.4;11;18;25;..

5.-35;-27;-19;-11;..​

Now, WE can find the nth term as;

1) 10,14,18,22..

Here, a = 10

Common difference = 14 - 10 = 4

Hence, The nth term is,

a (n) = a + (n - 1) d

a (n) = 10 + (n - 1)4

a (n) = 10 + 4n - 4

a (n) = 6 + 4n

2) 34,26,18,10,..

Here, a = 34

Common difference = 26 - 34 = 8

Hence, The nth term is,

a (n) = a + (n - 1) d

a (n) = 34 + (n - 1)8

a (n) = 34 + 8n - 8

a (n) = 26 + 8n

3) 17;11;5;-1;-7;..

Here, a = 17

Common difference = 11 - 17 = - 6

Hence, The nth term is,

a (n) = a + (n - 1) d

a (n) = 17 + (n - 1) (- 6)

a (n) = 17 - 6n + 6

a (n) = 23 - n

4) 4;11;18;25;..

Here, a = 4

Common difference = 11 - 4 = 7

Hence, The nth term is,

a (n) = a + (n - 1) d

a (n) = 4 + (n - 1) (7)

a (n) = 4 + 7n - 7

a (n) = 7n - 3

5) -35;-27;-19;-11;..​

Here, a = - 35

Common difference = - 27 + 35 = 8

Hence, The nth term is,

a (n) = a + (n - 1) d

a (n) = - 35 + (n - 1) (8)

a (n) = - 35 + 8n - 8

a (n) = 8n - 43

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Answer:

Rate of slower train: 110 km/h

Rate of faster train: 122 km/h

Step-by-step explanation:

The explanation is attached below.

Answer:

The correct answer is 7.

Step-by-step explanation:

The sum of 2 and 5 is 7, not 8. Addition is a basic arithmetic operation that combines two numbers to find their total or sum. In this case, when we add 2 and 5 together, we count a total of 7. It's important to carefully perform calculations to ensure accuracy and obtain the correct result.

Answer:

The first one is g(x)=1/4x-7

Step-by-step explanation:

I'm not pretty sure about your question but hope this can help:

To find the roots of the equation 2x = 3sin(x) + 5 using the bisection method, we need to follow these steps:

Step 1: Define the function

Let's define the function f(x) = 2x - 3sin(x) - 5.

Step 2: Choose an initial interval

We need to choose an interval [a, b] such that f(a) and f(b) have opposite signs. Based on the graph or estimation, we can select an interval that contains the root. Let's choose [a, b] = [0, 2] as an example.

Step 3: Apply the bisection method

Now we can apply the bisection method to find the root within the chosen interval. The steps are as follows:

1. Calculate the midpoint of the interval: c = (a + b) / 2.

2. Evaluate f(c).

3. If f(c) is very close to zero (i.e., |f(c)| < tolerance), then c is the root. Stop the process.

4. If f(a) and f(c) have opposite signs, set b = c. Otherwise, set a = c.

5. Repeat steps 1-4 until you find a root within the desired tolerance.

Step 4: Choose a tolerance

You need to choose a tolerance level, which determines how close to zero the function value needs to be to consider it a root. Let's choose a tolerance of 0.0001 as an example.

Now, let's apply the bisection method step by step:

Step 1: Define the function: f(x) = 2x - 3sin(x) - 5

Step 2: Choose an initial interval: [a, b] = [0, 2]

Step 3: Apply the bisection method:

1. Calculate the midpoint of the interval: c = (0 + 2) / 2 = 1.

2. Evaluate f(c): f(1) = 2(1) - 3sin(1) - 5 ≈ -5.42.

3. Since f(1) is not very close to zero, we proceed to the next step.

4. f(0) = 2(0) - 3sin(0) - 5 = -5, and f(1) = -5.42 have opposite signs.

  Therefore, we update the interval to [a, b] = [0, 1].

5. Repeat steps 1-4.

1. Calculate the midpoint of the interval: c = (0 + 1) / 2 = 0.5.

2. Evaluate f(c): f(0.5) = 2(0.5) - 3sin(0.5) - 5 ≈ -4.11.

3. Since f(0.5) is not very close to zero, we proceed to the next step.

4. f(0) = -5 and f(0.5) ≈ -4.11 have opposite signs.

  Therefore, we update the interval to [a, b] = [0, 0.5].

5. Repeat steps 1-4.

Continue this process until you reach a root within the desired tolerance of 0.0001.

Please note that the bisection method is an iterative process, and it may take several iterations to converge to the root depending on the chosen interval and tolerance level.

The root lies approximately between 1.40625 and 1.4375.

To find the roots of the equation 2x = 3sin(x) + 5 using the bisection method, we need to locate the interval in which the root lies and then iteratively narrow down the interval until we get a root within a desired level of accuracy. The bisection method requires that the function changes sign within the interval we consider.

Let's first rearrange the equation to get it in the form f(x) = 0:

f(x) = 2x - 3sin(x) - 5

Now, we will perform the bisection method:

Step 1: Choose an interval [a, b] where the function changes sign. Let's start with [a, b] = [0, 2] since we can observe a sign change within this interval (f(0) < 0 and f(2) > 0).

Step 2: Calculate the midpoint of the interval: c = (a + b) / 2.

Step 3: Evaluate the function at the midpoint: f(c).

Step 4: If f(c) is close to zero (within the desired level of accuracy), then c is an approximation to the root, and we can stop the iteration.

Step 5: If f(c) has the same sign as f(a), replace a with c; otherwise, replace b with c.

Step 6: Repeat steps 2 to 5 until the desired level of accuracy is achieved.

Let's perform a few iterations to find the root:

Iteration 1:

[a, b] = [0, 2]

c = (0 + 2) / 2 = 1

f(c) ≈ 21 - 3sin(1) - 5 ≈ -5.42 (negative, replace a with c)

Iteration 2:

[a, b] = [1, 2]

c = (1 + 2) / 2 = 1.5

f(c) ≈ 21.5 - 3sin(1.5) - 5 ≈ 1.03 (positive, replace b with c)

Iteration 3:

[a, b] = [1, 1.5]

c = (1 + 1.5) / 2 = 1.25

f(c) ≈ 21.25 - 3sin(1.25) - 5 ≈ -2.07 (negative, replace a with c)

Iteration 4:

[a, b] = [1.25, 1.5]

c = (1.25 + 1.5) / 2 = 1.375

f(c) ≈ 21.375 - 3sin(1.375) - 5 ≈ -0.55 (negative, replace a with c)

Iteration 5:

[a, b] = [1.375, 1.5]

c = (1.375 + 1.5) / 2 = 1.4375

f(c) ≈ 21.4375 - 3sin(1.4375) - 5 ≈ 0.26 (positive, replace b with c)

Iteration 6:

[a, b] = [1.375, 1.4375]

c = (1.375 + 1.4375) / 2 = 1.40625

f(c) ≈ 21.40625 - 3sin(1.40625) - 5 ≈ -0.145 (negative, replace a with c)

Continue the iterations until you achieve the desired level of accuracy. After enough iterations, you'll approximate the root of the equation to a desired precision. In this example, the root lies approximately between 1.40625 and 1.4375.

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Answer:

180

Step-by-step explanation:

The area of a parallelogram is given by the formula A = b × h, where b is the base and h is the height. In this case, the base is 10 and the height is 18. Therefore, the area is:

A=10×18

A=180

The area of the parallelogram is 180 square units

The z-score of a time of 44 minutes is 1.2

From the question, we have the following parameters that can be used in our computation:

Normally distributed mean = 38 minutes

Normally distributed standard deviation = 5 minutes.​

Also, we have

Score = 44 miniues

The z-score of a time of 44 minutes is calculated as

z = (Score - Mean)/standard deviation

substitute the known values in the above equation, so, we have the following representation

z = (44 - 38)/5

Evaluate

z = 1.2

Hence, the z-score of a time of 44 minutes is 1.2

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1. The partial derivative of ∂R/∂R₁ is [tex]R_2^2R_3^2 / (R_1R_2 + R_1R_3 + R_2R_3)^2[/tex]

2.  by symmetry of the problem, ∂R/∂R₂ and ∂R/∂R₃ will be the same expression, but with the roles of the resistances changed. Therefore

∂R/∂R₂ = R₁²R₃² / (R₁R₂ + R₁R₃ + R₂R₃)² and ∂R/∂R₃ = R₁²R₂² / (R₁R₂ + R₁R₃ + R₂R₃)²

The formula for the net resistance R in a parallel circuit is:

R = (R₁R₂R₃) / (R₁R₂ + R₁R₃ + R₂R₃)

The partial derivative ∂R/∂R₁ we can use the quotient rule, which is given by:

(d/dx)[u(x)/v(x)] = [v(x)u'(x) - u(x)v'(x)] / [v(x)]²

u = R₁R₂R₃

v = R₁R₂ + R₁R₃ + R₂R₃,

so u' = R₂R₃

v' = R₂ + R₃ given that the derivative of R₁R₂ and R₁R₃ with respect to R₁ are R₂ and R₃, respectively, and R₂R₃ does not contain R₁, so its derivative is zero.

Applying the quotient rule gives:

∂R/∂R₁ = [R₂R₃(R₁R₂ + R₁R₃ + R₂R₃) - R₁R₂R₃(R₂ + R₃)] / (R₁R₂ + R₁R₃ + R₂R₃)²

= [R₁R₂²R₃ + R₁R₃²R₂ + R₂²R₃² - R₁R₂²R₃ - R₁R₃²R₂] / (R₁R₂ + R₁R₃ + R₂R₃)²

= R₂²R₃² / (R₁R₂ + R₁R₃ + R₂R₃)²

Now, by symmetry of the problem, we can see that ∂R/∂R₂ and ∂R/∂R₃ will be the same expression, but with the roles of the resistances changed. Therefore:

∂R/∂R₂ = R₁²R₃² / (R₁R₂ + R₁R₃ + R₂R₃)²

∂R/∂R₃ = R₁^2R₂^2 / (R₁R₂ + R₁R₃ + R₂R₃)²

The denominators are the same for the partial derivatives with respect to each of the resistances, but the numerators depend on the squares of the other two resistances, not including the one we are differentiating with respect to.

The above answer is based on the full question below;

Suppose that three resistors are in parallel in an electrical circuit. If the resistances are R₁, R₂ and R₃ ohms, respectively, then the net resistance in the circuit equals R =(R₁ R₂ R₃)/(R₁R₂ +R₁R₃ + R₂R₃). Compute the partial differential of ∂R/∂R₁. Given this partial derivative, explain how to quickly write down the partial derivatives ∂R/∂R₂ and ∂R/∂R₃

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The correct statement that F: "I agree. The ratios of consecutive x-values are constant, and the y-values are increasing at a constant rate."

To determine whether the function shown in the table is exponential, we need to analyze the relationship between the x-values and y-values.

The table shows x-values that are increasing by a power of 2 (1, 2, 4, 8, 16, 32, 64) and y-values that are increasing by a constant rate of 1 (0, 1, 2, 3, 4, 5, 6).

The constant ratio between consecutive x-values indicates exponential growth or decay.

In this case, the function is growing exponentially because the y-values are increasing at a constant rate.

Based on this information, we can conclude that the function is exponential.

Therefore, we agree with statement F: "I agree. The ratios of consecutive x-values are constant, and the y-values are increasing at a constant rate."

The other statements are incorrect because they do not accurately describe the relationship between the x-values and y-values in an exponential function.

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Answer: 19:30 is the current time as per the 24-hour time format

Step-by-step explanation: We know that a day has 24 hours. The time can be shown in two different formats- the 12-hour format and the 24-hour format. 12 hour format ranges only from 1-12 on the hour while 24-hour format varies from 1-24 representing the hour.

      The 24 hour time format is quite simple- marks one number each for one hour. If the Reading says 19:30, it simply means hour 19 of that day. 12-hour time format is different since it makes use of A.M. (Ante Meridiem) and P.M. (Post Meridiem).

Step-by-step explanation:

Let the boys be x

Girls = x - 14 (number of females is 14 less than the number of males)

x + x - 14 = 32

2x - 14 = 32

2x = 32 + 14 (add 14 to both sides or if 14 crosses over the bracket. The sign changes to plus or positive)

2x = 46

Divide both sides by 2

x = 23

Girls = x - 14 = 23 - 14

=9

Therefore, The boys are 23, while the girls are 9

If she decides to trade her in her car 8 years from now then the car will be worth of $8,782.52.

To estimate the future value of Tara's car 8 years from now, we can consider the average depreciation rate of vehicles and assume it applies to her car.

On average, cars tend to depreciate around 15-20% per year.

Let's assume a conservative depreciation rate of 15% per year for Tara's car. We can calculate the future value using the following formula:

Future Value = Current Value× (1 - Depreciation Rate)^Number of Years

Suppose the current value of Tara's car is $20,000.

Plugging in the values, we get:

Future Value = $20,000(1 - 0.15)⁸

Future Value = $20,000(0.85)⁸

Calculating this, we find:

Future Value = $8,782.52

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Answer:

------------------

Let it be x years after that Jack's mother will be 3 times as old as Jack.

Set up equation and solve for x:

After 15 years Jack will be 20 and his mother will be 60 years old.