A circle has a radius of 4.5 cm.
Calculate the circumference of the circle.
Write your answer rounded to 1 decimal
place.

Give your answer in cm.

Answer:

e^1.4 = 4.05519

to 3dp = 4.055

Step-by-step explanation:

3dp meaning 3 decimal places counting according to the value of 5

The container with the greater volume is cylinder A and it is 176.6 cm³ greater than cylinder B

A cylinder is made up of a rolled surface with a circular top and a circular base. A cylinder can also be called a circular based prism.

The volume of a cylinder is expressed as;

V = πr²h

where r is the radius and h is the height.

Volume of cylinder A

V = 3.14 × 6² × 10

V = 360 × 3.14

V = 1130.4 cm³

Volume of cylinder B

V = 31.4 × 4.5²× 15

V = 953.78 cm³

Therefore cylinder A has a greater volume and it's 176.6cm³ more than cylinder A

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The statement that explains why some elements decay and others do not is: "Elements that decay have a proton to neutron ratio that is too high or too low."

Decay of elements refers to the process of spontaneous transformation where an unstable atomic nucleus undergoes a change, often resulting in the emission of radiation or the formation of a new element.

The stability of an atomic nucleus depends on the balance between the strong nuclear force, which holds protons and neutrons together, and the electromagnetic force, which repels protons due to their positive charge.

Elements with a proton to neutron ratio that is too high or too low are generally more likely to decay.

This is because the imbalance in the ratio affects the stability of the nucleus.

A high proton to neutron ratio means that there are more protons than neutrons, leading to increased electrostatic repulsion between protons. On the other hand, a low proton to neutron ratio means there are more neutrons than protons, which can result in an unstable nucleus.

To achieve a more stable configuration, elements with an imbalanced proton to neutron ratio can undergo radioactive decay processes such as alpha decay, beta decay, or gamma decay.

These processes help the nucleus reach a more favorable balance of protons and neutrons, ultimately increasing its stability.

It's important to note that not all elements with an imbalanced proton to neutron ratio decay.

Some isotopes may have a slightly unstable configuration but still exist for long periods or even indefinitely.

The specific factors contributing to the stability or decay of an element involve the exact balance of nuclear forces, the energy differences between nuclear configurations, and other considerations that are governed by the fundamental laws of physics.

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Answer:

step-by-step:

Solution: y = 4x - 3

The ordered pair (0, -3) satisfies the relation 2x + y = -3.

To determine which ordered pair satisfies the relation 2x + y = -3, we can substitute the values of x and y from each option into the equation and check if the equation holds true.

a) (-1, 4):

2(-1) + 4 = -2 + 4 = 2 (not equal to -3)

b) (-2, -1):

2(-2) + (-1) = -4 - 1 = -5 (not equal to -3)

c) (0, -3):

2(0) + (-3) = -3 (equal to -3)

d) (-3, -3):

2(-3) + (-3) = -6 - 3 = -9 (not equal to -3)

Therefore, the ordered pair (0, -3) satisfies the relation 2x + y = -3.

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The graph of the function g(x) = 7cosx after the shift of 5/3 is shown by the second graph.

A right-angled triangle's relationship between its angle and sides is represented by a series of functions known as trigonometric functions.

What is Cosine (Cos) Function?

The ratio of the neighbouring side to the hypotenuse is known as the cos function (cosine function) in a triangle.

The range of cosine function lies between -1 to 1.

Calculation for the range of given function:

The given function is, g(x) = 7cosx  

Consider x = 0, put in the function.

g(x) = 7cos0

g(x) = 7×1

g(x) = 7

As, for the domain of x = 0 range is 7. the graph will shift upward with 7 units from origin.

Now, according to question, there is a shift of  5/3 of the graph, which means this 7 shift upward will move to  5/3 .

This condition is satisfied by the second graph.

Therefore, the shift for the function g(x) = 7cosx is shown correctly by the second graph.

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Answer:

B

Step-by-step explanation:

I took the test and graph B was the correct one

The probability of rolling a number greater than 2 on a standard number cube is 2/3.

Since we are interested in the probability of rolling a number greater than 2, we need to count the favorable outcomes and divide them by the total number of possible outcomes.

The numbers greater than 2 on the cube are 3, 4, 5, and 6, which means there are four favorable outcomes.

Since the cube has six possible outcomes in total, the probability of rolling a number greater than 2 is 4/6, which simplifies to 2/3.

Therefore, the probability of rolling a number greater than 2 on a standard number cube is 2/3.

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We are able to count the frequency of ages falling within each interval using class of 10 years. The histogram is drawn for the frequency table as well below.

To create class intervals, we will use range of 10 years each. Starting from the minimum age of 6, we can use the following intervals [tex]6-15, 16-25, 26-35, 36-45, 46-55, 56-65, 66-75.[/tex]

Now, we can count the frequency of ages falling within each interval:

Class - Frequency

6-15:      3

16-25:    3

26-35:   4

36-45:   2

46-55:   2

56-65:   1

66-75:   1

To create histogram, we will represent the class intervals on the x-axis and the frequency on the y-axis. Each interval's frequency is represented by the height of a bar.

The representation of the histogram using the frequency table i as follows:

  4 |

  3 |             x

  2 | x        x     x

  1 |  x

    -----------------------------

       6-15   16-25 26-35

The x represent the bars of the histogram.

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This study uses a repeated measures design, random sampling, and a control group.

Repeated measures design is used because each child experiences all treatments over time. Random sampling is present as children were randomly selected.

The control group is the group with no screen time. Blocking isn't used as participants aren't grouped based on shared characteristics affecting the response. Blinding isn't used as it's not mentioned that participants or researchers are unaware of the treatment given, which would prevent bias.

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Answer:

Let’s use x to represent the number of goats and y to represent the number of chickens. We know that there are 62 animals in total, so x + y = 62. We also know that there are 148 legs in total, so 4x + 2y = 148 (since goats have four legs and chickens have two).

We can solve for x and y by using substitution or elimination method. Let’s use substitution method here. From x + y = 62, we can get x = 62 - y. Substituting this into 4x + 2y = 148 gives us:

4(62 - y) + 2y = 148 248 - 4y + 2y = 148 248 - 2y = 148 100 = 2y y = 50

So there are 50 chickens on the farmyard. Substituting this into x + y = 62 gives us:

x + 50 = 62 x = 12

So there are 12 goats in the farmyard.

Therefore, there are 12 goats and 50 chickens on the farmyard.

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The number of professionals in the office, given that 8 professionals is 20 % would be 40 professionals.

To calculate the total number of staff in the office, use the following formula :

Total staff = ( Professionals / Percentage ) x 100

Professionals = 8 professionals

Percentage = 20 %

Plugging in the values, we get :

Total staff = ( 8 / 20 ) x 100

Total staff = 0. 40 x 100

Total staff = 40 professionals

In conclusion, the office would have a total of 40 professionals if 8 professionals are 20 % of staff.

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Full question is:

en una oficina trabajan 8 profesionales haciendo un porcentaje de 20%. calcular el numero del personal de tal oficina

Translated is:

8 professionals work in an office making a percentage of 20%. Calculate the number of staff in such an office.

Answer:

A.  -0.693147

Step-by-step explanation:

Replace f(x) with y in the given function:

[tex]y=\left(\dfrac{1}{2}\right)^x[/tex]

Take natural logs of both sides of the equation:

[tex]\ln y=\ln \left(\dfrac{1}{2}\right)^x[/tex]

[tex]\textsf{Apply the log power law:} \quad \ln a^n=n \ln a[/tex]

[tex]\ln y=x\ln \left(\dfrac{1}{2}\right)[/tex]

Differentiate using implicit differentiation.

Place d/dx in front of each term of the equation:

[tex]\dfrac{\text{d}}{\text{d}x}\ln y=\dfrac{\text{d}}{\text{d}x}x\ln \left(\dfrac{1}{2}\right)[/tex]

Differentiate with respect to x:

[tex]\dfrac{1}{y} \dfrac{\text{d}y}{\text{d}x}=\ln \left(\dfrac{1}{2}\right)[/tex]

[tex]\textsf{Apply the log quotient law:} \quad \ln \left(\dfrac{a}{b}\right) = \ln a - \ln b[/tex]

[tex]\dfrac{1}{y} \dfrac{\text{d}y}{\text{d}x}=\ln(1)-\ln(2)[/tex]

[tex]\dfrac{1}{y} \dfrac{\text{d}y}{\text{d}x}=0-\ln(2)[/tex]

[tex]\dfrac{1}{y} \dfrac{\text{d}y}{\text{d}x}=-\ln(2)[/tex]

Multiply both sides by y:

[tex]\dfrac{\text{d}y}{\text{d}x}=-y\ln (2)[/tex]

Substitute back in the expression for y:

[tex]\dfrac{\text{d}y}{\text{d}x}=-\left(\dfrac{1}{2}\right)^x\ln (2)[/tex]

Therefore, the differentiated function is:

[tex]f'(x)=-\ln(2)\left(\dfrac{1}{2}\right)^x[/tex]

To find f'(0), substitute x = 0 into the differentiated function:

[tex]\begin{aligned}x=0 \implies f'(0)&=-\ln(2) \left(\dfrac{1}{2}\right)^0\\&=-\ln(2) \cdot 1\\&=-\ln(2) \\&=-0.693147\; \sf (6\;d.p.)\end{aligned}[/tex]

The height of the rectangular chest should be 2 feet.

To determine the height of the rectangular chest, we can use the formula for the volume of a rectangular prism:

Volume = Length * Width * Height

We are given that the length is 6 feet, the width is 2 feet, and the volume is 24 cubic feet. Let's substitute these values into the formula and solve for the height:

24 = 6 * 2 * Height

Dividing both sides of the equation by (6 * 2):

24 / (6 * 2) = Height

24 / 12 = Height

2 = Height

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The altitude of each trapezoid is 4 feet.

We are given that;

The cost for paint to cover the exterior=$80

A can of paint cost= $20

Now,

We can find the total area of all four sides:

80 / 20 = 4 cans of paint

4 cans * 24 sq ft/can = 96 sq ft

Each side has an area of 96 / 4 = 24 sq ft.

Now we can use the formula for the area of a trapezoid to find the altitude:

24 = (5 + 7) * h / 2

24 = 6h

h = 4

Therefore, by area the answer will be 4 feet.

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The correct representation of the function g(x) as a translation 2 units right and 5 units up of f(x) = -√√x is:

g(x) = -√√(x - 2) + 5.

To perform a translation 2 units right, the x-coordinate needs to be replaced with (x - 2). This shift moves the entire graph horizontally to the right by 2 units.

Additionally, to shift the graph 5 units up, we add 5 to the function. Thus, the function g(x) is obtained by taking the negative square root of the square root of (x - 2) and then adding 5 to the result.

Among the given options, g(x) = -√√(x - 2) + 5 accurately represents the translation described, while the other options either have incorrect sign placement, incorrect order of operations, or an incorrect translation direction.

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Answer:

Step-by-step explanation:

To pack six chocolate bars to take up as little room as possible, we can arrange them in two layers of three bars each. Here is a sketch of one possible way to pack six chocolate bars:

```

_______ _______ _______

| || || |

| C || C || C |

|_______||_______||_______|

| || || |

| C || C || C |

|_______||_______||_______|

```

In this arrangement, the bars are packed tightly together and take up the least amount of space.

To find the size of the box needed for 48 chocolate bars, we first need to find the volume of one chocolate bar. The dimensions of each chocolate bar are given as 2.1 cm x 3 cm x 12 cm, so the volume is:

V = l x w x h = 2.1 cm x 3 cm x 12 cm = 75.6 cm^3

To pack 48 chocolate bars, we need to find the total volume they occupy:

Total volume = 48 x V = 48 x 75.6 cm^3 = 3,628.8 cm^3

Since the chocolate bars are packed into cuboid-shaped boxes, we need to find the dimensions of the box that can accommodate the total volume of the bars. Let's call the length, width, and height of the box L, W, and H, respectively. Then we have:

L x W x H = 3,628.8 cm^3

We want to find the smallest possible box, so we need to minimize each of the dimensions. We can start by setting two of the dimensions equal to each other and solving for the third. Let's set L = W and solve for H:

L x L x H = 3,628.8 cm^3

H = 3,628.8 cm^3 / L^2

Substituting L = W, we get:

H = 3,628.8 cm^3 / W^2

Now we can express the volume of the box in terms of just one variable:

L x L x H = L^2 x H = L^2 x (3,628.8 cm^3 / L^2) = 3,628.8 cm^3

Simplifying, we get:

L^3 = 3,628.8 cm^3

Taking the cube root of both sides, we get:

L = 16 cm (rounded to the nearest whole number)

So the length and width of the box should be 16 cm, and the height can be calculated as:

H = 3,628.8 cm^3 / (16 cm x 16 cm) = 14.2 cm (rounded to one decimal place)

Therefore, a box with dimensions 16 cm x 16 cm x 14.2 cm can accommodate 48 chocolate bars packed as described earlier.

Answer: Range is 8 and median is 7

Step-by-step explanation:

To find the range is to take the number with the highest value and subtract that from the number with lowest value. So you would take 9 and 1 (9-1) and would get 8

To find the median, you need to rearrange the numbers from lowest to highest, and find the middle of it. Since the order of numbers is perfectly arranged, the median is 7

Answer:

translation

Step-by-step explanation:

The ratio of EG = 36.

Let's assign variables to the lengths of the line segments:

EF = x

FG = 5x

GH = 3x

We know that EH = EF + FG + GH.

Substituting the given values, we have:

54 = x + 5x + 3x

Combining like terms, we get:

54 = 9x

To isolate x, we divide both sides of the equation by 9:

54/9 = x

Simplifying, we find:

6 = x

EF = 6, FG = 5(6) = 30, and GH = 3(6) = 18.

Since EG is the sum of EF and FG, we can calculate it as follows:

EG = EF + FG = 6 + 30

= 36

EG = 36.

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The distance between line and the point P(4,1) is,

⇒ d = 4.47

We have to given that;

Line contains points (- 4,0) and (0, - 2).

Since, The equation of line in point-slope form passing through the points  (x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Hence, The equation of line is,

⇒ y - 0 = (- 2 - 0) / (0 - (- 4)) (x - (- 4))

⇒ y = - 2/4 (x + 4)

⇒ y = - 1/2 (x + 4)

⇒ y = - 1/2x - 2

⇒ 2y = - x - 4

⇒ 2y + x + 4 = 0

So, The distance between the line 2y + x + 4 = 0 and the point P(4, 1) is:

⇒ d = (2 × 1 + 4 + 4) / √(2² + 1)

⇒ d = 10 / √5

⇒ d = 2√5

⇒ d = 2 x 2.23

⇒ d = 4.47

Thus, The distance between line and the point P(4,1) is,

⇒ d = 4.47

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Answer: 2.✅ 4.✅

Step-by-step explanation: Pythagorean Theorem.
1. 3^2+5^2=√34❌

2. 5^2+4^2=√41✅

3. 6^2+8^2=10❌; it is only 10 NOT √10

4. 3^2+3^2=3√2; 45-45-90 triangle (always right triangle)

The equation for the instantaneous velocity, v(t), of the bumblebee at any point in time is v(t) = 12 - 18t²

To find the equation for the instantaneous velocity of the bumblebee at any point in time, we need to take the derivative of the distance function, p(t), with respect to time (t).

Given that p(t) = 12t - 6t³ + 1, we can find the derivative using the power rule of differentiation.

Derivative of p(t) with respect to t:

p'(t) = d/dt (12t - 6t³ + 1)

= 12 - 18t²

Therefore, the equation for the instantaneous velocity, v(t), of the bumblebee at any point in time is:

v(t) = 12 - 18t²

That the velocity function v(t) is the derivative of the distance function p(t).

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The statement is saying that the Separation Axioms are not strong enough to develop set theory with its usual operations and constructions.

The Separation Axioms are a set of axioms that allow us to define subsets of sets. However, they are not strong enough to allow us to define the union of two sets, or the notion of a real number.

The union of two sets is the set that contains all the elements that are in either set, or in both sets. For example, the union of the set {1, 2, 3} and the set {4, 5, 6} is the set {1, 2, 3, 4, 5, 6}.

A real number is a number that can be represented on a number line. Real numbers include all the rational numbers (numbers that can be written as a fraction of two integers), as well as all the irrational numbers (numbers that cannot be written as a fraction of two integers).

The Separation Axioms are not strong enough to define the union of two sets or the notion of a real number because they do not allow us to define arbitrary subsets of sets. For example, the Separation Axioms do not allow us to define the subset of all real numbers that are greater than 0.

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Answer:

Part A:

122.5 cubic inches

Part B:

No

Step-by-step explanation:

Part A:

The volume of a rectangular prism is the product of its length, width, and height. Volume = 5 x 3.5 x 7 = 122.5 cubic inches Since the volume of the box is less than 22 cubic inches.

Part B:

Answer:

The temperature change from noon to midnight is 50 degrees. The temperature at noon was 40 degrees and at midnight it was -10 degrees. Therefore, the change in temperature is 40 - (-10) = 50 degrees.

The ranking from the lowest to highest APR for the given companies is A, B, D, C.

The correct option is b.

To rank the companies from the lowest to highest Annual Percentage Rate (APR) based on a $600 loan amount, we need to calculate the APR for each company. The formula to calculate APR is APR = (Fees / Loan Amount) * (365 / Terms of Loan).

Let's calculate the APR for each company:

For Company A:

APR_A = ($60 / $600) x (365 / 18) = 0.1 x 20.28 = 2.028%

For Company B:

APR_B = ($80 / $600) x (365 / 12) = 0.1333 x 30.42 = 4.054%

For Company C:

APR_C = ($90 / $600) x (365 / 10) = 0.15 x 36.5 = 5.475%

For Company D:

APR_D = ($110 / $600) x (365 / 14) = 0.1833 x 26.07 = 4.79%

Now, we can rank the companies from the lowest to highest APR:

Company A - APR: 2.028%

Company B - APR: 4.054%

Company D - APR: 4.79%

Company C - APR: 5.475%

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The complement of the set {2,4,11,14,17} is {3, 6, 9, 19}.

The complement of set A is defined as a set that contains the elements present in the universal set but not in set B.

In other words, the complement of a set is the difference between the universal set and the set itself.

Therefore,

U = universal set =  {2, 3, 4, 6, 9, 11, 14, 17, 19}

Therefore,

complement of {2,4,11,14,17} is the values that are not in the universal set.

Therefore,

complement of  {2,4,11,14,17}  = {3, 6, 9, 19}

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Arithmetic sequence and Geometric sequence a₁ is an integer, the numerator must be divisible by -21.

Let's denote the common difference of the arithmetic sequence as 'd' and the common ratio of the geometric sequence as 'r'.

Since a4, a7, and a12 form a geometric sequence, we can express the terms as follows:

a4 = a₁ + 3d

a7 = a₁ + 6d

a12 = a₁ + 11d

We know that a7 = 30, so we can substitute it into the equation:

a₁ + 6d = 30

Now, let's examine the ratio between consecutive terms in the geometric sequence:

(a7 / a4) = (a12 / a7)

Substituting the expressions for the terms, we get:

[(a₁ + 6d) / (a₁ + 3d)] = [(a₁ + 11d) / (a₁ + 6d)]

Cross-multiplying, we have:

(a₁ + 6d)(a₁ + 6d) = (a₁ + 3d)(a₁ + 11d)

Expanding the equation, we get:

a₁² + 12ad + 36d² = a₁² + 14ad + 33d²

Simplifying and rearranging terms, we obtain:

2ad = -3d²

Since the sequence is non-constant, the common difference 'd' cannot be zero. Therefore, we can divide both sides of the equation by 'd':

2a = -3d

Substituting the value of 'd' from the equation a₁ + 6d = 30, we have:

2a = -3(a₁ + 6d)

Expanding and simplifying:

2a = -3a₁ - 18d

Now, we can substitute the value of 'd' from the equation a₁ + 6d = 30:

2a = -3a₁ - 18(a₁ + 6d)

Expanding and simplifying further:

2a = -3a₁ - 18a₁ - 108d

Since a₁ + 6d = 30, we can substitute it again:

2a = -3a₁ - 18a₁ - 108(a₁ + 6d)

Expanding and simplifying:

2a = -3a₁ - 18a₁ - 108a₁ - 648d

Combining like terms:

2a = -129a₁ - 648d

Now, we can substitute the known value of a₇ = 30 into the equation a₁ + 6d = 30:

a₁ + 6d = 30

Rearranging the equation:

a₁ = 30 - 6d

Substituting this into the previous equation:

2a = -129(30 - 6d) - 648d

Expanding and simplifying:

2a = -3870 + 774d - 648d

Combining like terms:

2a = -3870 + 126d

Now, we can substitute the value of 2a = -3a₁ - 18a₁ - 108d into the equation:

-3a₁ - 18a₁ - 108d = -3870 + 126d

Expanding and simplifying:

-21a₁ - 108d = -3870 + 126d

Rearranging the equation:

-21a₁ = 234d - 3870

Dividing both sides by -21:

a₁ = (234d - 3870) / -21

Since arithmetic sequence and geometric sequence a₁ is an integer, the numerator must be divisible by -21

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