given m||n, find the value of x

In ∆DEF, DG−→− bisects ∠EDF. ∆FDG is similar to ∆EDG; ∆FDG and ∆EDG may not be congruent, but they are similar by the ASA Similarity Postulate. Therefore, the correct option is B.

1. Since DG bisects ∠EDF, it means that ∠EDG = ∠FDG. This is the Angle Bisector Theorem.

2. In triangles FDG and EDG, we know that ∠FDG = ∠EDG (from step 1) and ∠DFG = ∠DEG (both are vertical angles and therefore congruent).

3. Now we have two pairs of congruent angles: ∠FDG = ∠EDG and ∠DFG = ∠DEG.

4. According to the (Angle-Side-Angle) or  ASA Similarity Postulate, if two angles in one triangle are congruent to two angles in another triangle, then the triangles are similar. Therefore, ∆FDG is similar to ∆EDG.

Hence, the correct answer is option B: Yes; ∆FDG and ∆EDG may not be congruent, but they are similar by the ASA Similarity Postulate.

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Step-by-step explanation:

x = sqrt (y-9)     square both sides

x^2 = y-9           add 9 to both sides

y = x^2 + 9        <====== this parabola has a POSITIVE x^2 coefficient ( +1)...

                                      so it is bowl shaped and opens UPWARD

The greatest common what is the greatest common factor of 6a2b2 and 15a4b37 is option d.

To find the greatest common factor (GCF) of 6a^2b^2, 15a^4b^3, 7a^3b, and 3a^2b^2, follow these steps:

Step 1: Find the GCF of the numerical coefficients: The GCF of 6, 15, 7, and 3 is 1.

Step 2: Find the GCF of the 'a' terms: The lowest power of 'a' is a^2, so the GCF is a^2.

Step 3: Find the GCF of the 'b' terms: The lowest power of 'b' is b, so the GCF is b.

Combine the results from steps 1, 2, and 3: The GCF of 6a^2b^2, 15a^4b^3, 7a^3b, and 3a^2b^2 is 1a^2b.

Therefore, the GCF of 6a^2b^2 and 15a^4b^3 is 3a^2b^2, which is option (d).

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A nonspecific defense, also known as innate immunity, is the first line of defense that the body uses against pathogens, such as bacteria, viruses, and fungi.

This defense is considered nonspecific because it is not targeted towards a particular pathogen but rather provides a general defense mechanism that helps the body to prevent and fight infections. Examples of nonspecific defenses include physical barriers such as skin and mucous membranes, chemical barriers such as stomach acid and lysozyme, and cellular defenses such as phagocytic cells and natural killer cells.

2. The body's second line of defense is also part of the innate immune system and involves the activation of nonspecific leukocytes, including neutrophils, monocytes/macrophages, and natural killer cells. This defense takes effect when pathogens manage to breach the physical and chemical barriers of the body and enter into the tissues. These leukocytes then recognize and attack the invading pathogens through various mechanisms such as phagocytosis, release of cytotoxic substances, and activation of the complement system.

3. Nonspecific leukocytes play critical roles in the body's second line of defense by recognizing and attacking foreign pathogens. Neutrophils are the most abundant leukocytes in the body and are the first responders to infection. They are recruited to the site of infection and destroy pathogens through phagocytosis and release of antimicrobial substances. Monocytes/macrophages also play a crucial role in phagocytosis and release cytokines that activate other immune cells. Natural killer cells are responsible for recognizing and killing virus-infected cells and tumor cells.

Lastly, question 4. When Jera's skin became red and warm around the cut, it was a sign of inflammation, which is a normal response of the immune system to infection. Inflammation is characterized by redness, heat, swelling, and pain, and is caused by the release of chemicals such as histamine and cytokines in response to infection. The purpose of inflammation is to increase blood flow to the site of infection, bringing immune cells and nutrients to aid in the fight against the invading pathogens.

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If an 'I' statement is true, then the truth value of its corresponding E statement is equals to the true. So, option(a) is right answer of this problem.

Truth value : The truth value of a statement is either true or false, depending on whether the logic makes sense or not. Let us assume two statements, p : Ram goes to school daily

q : Ram will get good marks

We use implication for determining value. In logic, implication is relationship between different propositions in which the second proposition is a logical consequence of the first.

first case : If Ram does not go to school daily then he will get good marks. That is p is false and q is true, ¬ p --> q ⇒ true ( using implication rule)

second case : If Ram does not go to school daily then he will not get good marks. That is p is false and q is false , ¬ p --> ¬ q ⇒ true ( using implication rule)

Hence, required value of statement is true.

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To find the first derivative of the equation x cos(14x + 13y) = y sin x, we will need to use the chain rule and product rule.

First, we will differentiate each term separately:

d/dx(x) = 1

d/dx(cos(14x + 13y)) = -sin(14x + 13y) * d/dx(14x + 13y)
= -sin(14x + 13y) * 14

d/dx(y) = 0 (since y is a constant)

d/dx(sin(x)) = cos(x)

Next, we will apply the product rule to differentiate the left-hand side of the equation:

d/dx(x cos(14x + 13y)) = cos(14x + 13y) + x * (-sin(14x + 13y) * 14)

Now, we can set this expression equal to the derivative of the right-hand side of the equation and solve for the first derivative:

cos(14x + 13y) - 14x sin(14x + 13y) = y cos(x)

Our final answer for the first derivative is:

cos(14x + 13y) - 14x sin(14x + 13y) = y cos(x)

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The options that are statistical are:

how many pets do you have?

what time do you go to sleep?

how many siblings do you have?

The options that are non-statistical are:

what kind of dog does bruno have?

what is clara's brother's name?

what time did javed go to sleep?

A statistical question is defined as one that will obtain the data that will vary from one particular response to another. However, a non-statistical question is defined as one that will obtain data that is basically exact and then has only one response.

A question that will not provide a variety of different answers is referred to as not a statistical question. For example, we can say that 'how many siblings do I have?' is not referred to as statistical. The answer will definitely have just one response, and not many.

A non-statistical question in math is defined as a question that will not provide a variety of answers. Finally, non-statistical questions provide us with exact answers that do not change.

Thus, the options that are statistical are:

how many pets do you have?

what time do you go to sleep?

how many siblings do you have?

The options that are non-statistical are:

what kind of dog does bruno have?

what is clara's brother's name?

what time did javed go to sleep?

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Tina walks to the library for her studies three times a week. During each visit, she walks 3/10 mile to the library and then walks 4/10 mile back home. Therefore, Tina walks a total of 1.4 miles each week for her library studies (3 times a week x (3/10 mile to library + 4/10 mile back home) = 1.4 miles).

If Tina wants to win a prize for walking, she would need to walk more than 1.4 miles per week. The amount of additional distance she needs to walk depends on the requirements for the prize.

For example, if the prize requires her to walk 2 miles per week, Tina would need to walk an additional 0.6 miles (2 miles - 1.4 miles) to meet the goal. This could be achieved by adding an extra walk to her routine or extending the distance of her existing walks.

It is important to note that walking is a great form of exercise and can have many benefits for overall health and well-being. By incorporating regular walks into her routine, Tina can improve her physical fitness and potentially achieve her goal of winning a prize.

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x^(1/2) = 0

This equation has no real solutions, since no real number raised to any power can equal 0.

Therefore, the sum of all values of x satisfying r*(x) = 0 or P(x) is undefined is just 2, the only value of x for which r*(x) - 0.

To find the values of x for which r*(x) - 0 or P(x) is undefined, we first need to determine what r*(x) and P(x) are.

r*(x) is the derivative of f(x), which we can find using the product rule:

r*(x) = (1/2)x^(-1/2)(x-4) + x^1/2(1)

Simplifying this expression, we get:

r*(x) = (x-2)/sqrt(x)

To find the values of x for which r*(x) - 0, we can set r*(x) equal to 0 and solve for x:

(x-2)/sqrt(x) = 0

x - 2 = 0

x = 2

So the only value of x for which r*(x) - 0 is x = 2.

Next, we need to find the values of x for which P(x) is undefined. P(x) is undefined when the denominator of the expression for f(x) is equal to 0, since division by 0 is undefined. The denominator of f(x) is x^(1/2), so we need to solve the equation x^(1/2) = 0:

x^(1/2) = 0

This equation has no real solutions, since no real number raised to any power can equal 0.

Therefore, the sum of all values of x satisfying r*(x) = 0 or P(x) is undefined is just 2, the only value of x for which r*(x) - 0.

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Answer:

point form - (2,2)

x=2 y=2

The derivative of (f∘g)(x) can be found using the chain rule, which states that the derivative of (f∘g)(x) is (f'(g(x)))(g'(x)).

In this case, (f∘g)(x) = f(g(x)) = 3(5^x) + 3cos(x), so we need to find f'(g(x)) and g'(x) and then multiply them together. The derivative of f(x) is f'(x) = 15^x * ln(5) + 1, so the derivative of f(g(x)) with respect to g(x) is f'(g(x)) = 15^(g(x)) * ln(5) + 1. The derivative of g(x) is g'(x) = -3sin(x). Therefore, using the chain rule, we have:(f∘g)'(x) = f'(g(x)) * g'(x) = (15^(g(x)) * ln(5) + 1) * (-3sin(x))Substituting g(x) = 3cos(x), we get:(f∘g)'(x) = (15^(3cos(x)) * ln(5) + 1) * (-3sin(x))So the correct answer is: (3(5^3cos(x)) ln(5) + 1) * (-3sin(x))

For more similar questions on topic a) The intervals for which f(x) = -5.5sin(x) + 5.5cos(x) is concave up and concave down on [0,2π] can be found by analyzing the second derivative of the function. Taking the second derivative of f(x), we get:

f''(x) = -5.5cos(x) - 5.5sin(x)

To find the intervals of concavity, we need to determine where f''(x) is positive and negative.

When f''(x) > 0, the function is concave up. When f''(x) < 0, the function is concave down.

Setting f''(x) = 0, we get:

-5.5cos(x) - 5.5sin(x) = 0

Simplifying, we get:

cos(x) + sin(x) = 0

Solving for x, we get:

x = 3π/4, 7π/4

These are the possible points of inflection for the function.

Using test intervals, we can determine the intervals of concavity:

When 0 ≤ x < 3π/4 or 7π/4 < x ≤ 2π, f''(x) < 0, so f(x) is concave down.

When 3π/4 < x < 7π/4, f''(x) > 0, so f(x) is concave up.

b) The possible points of inflection for f(x) on [0,2π] are x = 3π/4 and x = 7π/4. To find the coordinates of these points, we can substitute each value of x into the original function f(x):

f(3π/4) = -5.5sin(3π/4) + 5.5cos(3π/4) = 5.5√2 - 5.5√2/2 = 5.5√2/2

So the coordinates of the point of inflection at x = 3π/4 are (3π/4, 5.5√2/2).

Similarly, we can find the coordinates of the point of inflection at x = 7π/4:

f(7π/4) = -5.5sin(7π/4) + 5.5cos(7π/4) = -5.5√2 - 5.5√2/2 = -5.5(3/2)√2

So the coordinates of the point of inflection at x = 7π/4 are (7π/4, -5.5(3/2)√2).

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The equation required to modelled sound waves is given by y₁ + y₂ = 40 sin 3x cos θ.

Equations used to modelled sound waves are,

y₁= 20 sin (3x + θ)

A waves travelling in the opposite direction are,

y₂ = 20 sin (3x - θ)

To show that y₁ + y₂ = 40 sin 3x cos θ,

Simply substitute the given expressions for y₁ and y₂ and simplify using trigonometric identities.

sin A + sinB = 2 sin  [(A + B)/2] cos [(A - B)/2].

y₁ + y₂ = 20 sin (3x + θ) + 20 sin (3x - θ)

⇒y₁ + y₂ = 20 ( sin (3x + θ) + sin (3x - θ) )

Using the identity for the sum of two sines, simplify this expression,

⇒y₁ + y₂ = 2 ×20 × sin (3x + θ + 3x -  θ)/2 cos (3x + θ - 3x + θ)/2

⇒ y₁ + y₂ = 2 ×20 × sin (3x) cos (θ)

⇒ y₁ + y₂ = 40 sin (3x) cos (θ)

Therefore, for the sound waves y₁ + y₂ = 40 sin 3x cos θ, as required.

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The above question is incomplete, the complete question is:

Sound waves can be modeled by the equations of the form y₁= 20 sin (3x + θ). a wave traveling in the opposite direction can be modeled by y₂ = 20 sin (3x - θ). show that y₁ + y₂ = 40 sin 3x cos θ.

The domain of the rational function is: option (2)  {x ∈ ℝ | x ≠ -4, 3, 4}

A rational number is any number that can be expressed as the ratio or fraction of two integers, where the denominator is not zero. In other words, a rational number is a number that can be written in the form of p/q, where p and q are integers, and q is not equal to zero.

The domain of a rational function is the set of all real numbers for which the function is defined, and the denominator is not equal to zero. So, we need to find the values of x for which the denominator of the given rational function is not zero.

The denominator of the given rational function is:

x³ - 3x² - 16x + 48

We can factor this polynomial using synthetic division or polynomial long division:

x³- 3x² - 16x + 48 = (x - 4)(x - 3)(x + 4)

So, the denominator of the rational function is not defined when:

x - 4 = 0 or x - 3 = 0 or x + 4 = 0

Solving these equations, we get:

x = 4 or x = 3 or x = -4

Therefore, the domain of the given rational function is:

{x ∈ ℝ| x ≠ –4, 3, 4}

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Two triangles have perimeters that can be expressed as 12x + 12 and 8x - 2,  with a difference of 4x + 14, and have perimeters of 47 and 28 when x = 3.

a. The perimeter of each triangle can be found by adding up the lengths of all three sides:

Triangle 1: (4x+2) + (7x+7) + (x+3) = 12x + 12

Triangle 2: (2x-5) + (x+7) + (5x-4) = 8x - 2

b. To find the difference in perimeter between the larger triangle and the smaller triangle, we can subtract the smaller perimeter from the larger perimeter:

(12x + 12) - (8x - 2) = 4x + 14

c. To find the perimeter for each triangle when x = 3, we can substitute x = 3 into the expressions found in part (a):

Triangle 1: (4(3)+2) + (7(3)+7) + (3+3) = 47

Triangle 2: (2(3)-5) + (3+7) + (5(3)-4) = 28

Therefore, the perimeter of Triangle 1 is 47 units and the perimeter of Triangle 2 is 28 units when x = 3.

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The potters are qualified for the home loan as their total monthly payment is $831.02, which is less than $1000.00.

The total cost of the cottage along with the annual insurance and taxes is $118,000 + $710 + $2800 = $121,510.

The down payment made by the potters is $14,000. Therefore, the amount to be financed through a mortgage is $121,510 - $14,000 = $107,510.

Using the formula for the monthly payment of a mortgage, which is given by:

M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1]

where P is the principal (amount to be financed), i is the monthly interest rate, and n is the total number of monthly payments.

For a 5%, 15-year mortgage, the monthly interest rate is 0.05/12 = 0.0041667, and the total number of monthly payments is 15 x 12 = 180.

Plugging in the values, we get:

M = $107,510 [ 0.0041667 (1 + 0.0041667)^180 ] / [ (1 + 0.0041667)^180 - 1 ]

M = $831.02

Therefore, the total monthly payment for the mortgage and the annual insurance and taxes is $831.02 + $59.17 + $233.33 = $1123.52, which is more than the maximum allowed payment of $1000.00. Hence, the potters are qualified for the home loan.

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The complete factorization of the expression is  (m+n)(x-y).

The complete factorization of the expression is determined as follows;

To factorize the expression (m+n)(2x-y)-x(m+n), we can first factor out the common factor (m+n):

(m+n)(2x-y)-x(m+n) = (m+n)(2x-y-x)

Next, we will factorize completely as follows;

2x - x - y = x - y

(m+n)(2x-y-x)  = (m+n)(x-y)

Therefore, the fully factorized form of the expression is (m+n)(x-y).

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For the first equation, we can use the product rule. Let f(x) = 2x+ and g(x) = 5x+2. Then, f'(x) = 2 and g'(x) = 5. Using the product rule formula, we get:

k'(x) = f(x)g'(x) + g(x)f'(x)
k'(x) = (2x+)(5) + (5x+2)(2)
k'(x) = 10x+ + 4x+10

For the profit function, P(x) = -2x^2 + 6x + 7, we can use the derivative to find the marginal profit. The derivative of P(x) is:

P'(x) = -4x + 6

To find the marginal profit when 4 units are produced and sold, we plug in x = 4 into P'(x):

P'(4) = -4(4) + 6
P'(4) = -10

Therefore, the marginal profit when 4 units are produced and sold is -10 hundred dollars or -$1,000. This means that for each additional unit produced and sold beyond the initial 4 units, the profit will decrease by $1,000.
Hi! It seems that your question has some missing information and typos, but I'll try my best to help you with the given data. The main task here is to find the marginal profit when 4 units are produced and sold, and interpret the answer.

The profit function P(x) appears to be incomplete. However, since we're asked to find the marginal profit, we need to take the derivative of the profit function with respect to x. Marginal profit is the derivative of the profit function with respect to the number of units sold (x). We can use the chain rule, product rule, or quotient rule to find the derivative, depending on the given profit function.

Once we have the derivative, we can evaluate it at x = 4 to find the marginal profit when 4 units are produced and sold. The result will indicate how much additional profit (in hundreds of dollars) the company will gain for producing and selling one more unit.

Please provide the complete profit function P(x), and I will be glad to help you find the marginal profit and interpret the answer.

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The measure of angles ADC is 30⁰.

The measure of angles DCA is 120⁰.

The measure of angles DCB is 180⁰.

The measure of angles AEB is 30⁰.

The measure of each of the angles is calculated as follows;

if length AB = length CD, then AC = AB

Also triangle ACB = equilateral triangle, and each angle = 60⁰.

Angle DAB = 90 (since line DB is the diameter)

Angle DAC = angle ADC

DAC = 90 - 60 = 30 = ADC

DCA = 180 - (30 + 30) (sum of angles in a triangle)

DCA = 120⁰.

The value of angle DCB is calculated as follows;

DCB = 180 (sum of angles on straight line)

angle AEB = angle ADC (vertical opposite angles )

angle AEB = 30⁰

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We can prove that 25k² + 15k is an even integer whenever 5k - 3 is an integer by considering two cases: when k is even and when k is odd.

Let's assume that 5k - 3 is an integer. Then, we can write k as k = (5k - 3 + 3)/5 = (5k - 3)/5 + 3/5. Since (5k - 3)/5 is an integer, we can write it as (5k - 3)/5 = n, where n is an integer. Thus, we have k = n + 3/5.

Now, we can substitute this expression for k into 25k² + 15k as follows:

25k² + 15k = 25(n + 3/5)² + 15(n + 3/5)

Expanding the square, we get:

25(n² + 6n/5 + 9/25) + 15n + 9 = 25n² + 45n/5 + 34/5

Simplifying, we get:

25k² + 15k = 5(5n² + 9n) + 34/5

Since 5n² + 9n is an integer, we can write it as m, where m is an integer. Thus, we have:

25k² + 15k = 5m + 34/5

Now, we can consider two cases:

Case 1: k is even. In this case, k can be written as k = 2p, where p is an integer. Substituting this expression into 5k - 3, we get:

5k - 3 = 5(2p) - 3 = 10p - 3

Since 10p is even, we can conclude that 10p - 3 is odd. Therefore, m must be odd, since 5m + 34/5 is even. Thus, 25k² + 15k is even, since it can be written as 5m + 34/5, where 5m is even and 34/5 is even.

Case 2: k is odd. In this case, k can be written as k = 2p + 1, where p is an integer. Substituting this expression into 5k - 3, we get:

5k - 3 = 5(2p + 1) - 3 = 10p + 2

Since 10p is even, we can conclude that 10p + 2 is even. Therefore, m must be even, since 5m + 34/5 is even. Thus, 25k² + 15k is even, since it can be written as 5m + 34/5, where 5m is even and 34/5 is even.

In both cases, we have shown that 25k² + 15k is an even integer whenever 5k - 3 is an integer. Therefore, the statement is proved.

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Applying the concept of combination, the number of different sandwiches that can be created is determined as: D. 6.

To determine the number of different sandwiches that can be created with two different meats, we can use the concept of combinations.

In this case, we need to choose 2 meats out of 4 options. The number of combinations of 2 items that can be chosen from a set of 4 items is given by the formula:

nCr = n! / r!(n-r)!

where n is the total number of items, r is the number of items to be chosen, and the exclamation mark (!) denotes the factorial function.

In this case, we have:

n = 4 (since there are 4 meat options)

r = 2 (since Regan wants to choose 2 meats)

Therefore, the number of different sandwiches that can be created is:

4C2 = 4! / 2!(4-2)! = 6

This means there are 6 different ways to choose 2 meats out of 4, and hence 6 different sandwich options.

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The colony will need to triple in number after about 7.58 days.

Since the number of bacteria doubles every 5 days, we can write the relationship between the number of bacteria and time as an exponential function:

N(t) = N0 x 2^(t/5)

where N0 is the initial number of bacteria and t is the time in days.

To find out how long it will take for the colony to triple in number, we need to solve the equation:

N(t) = 3N0

Substituting the expression for N(t) from above, we get:

N0 x 2^(t/5) = 3N0

Dividing both sides by N0, we get:

2^(t/5) = 3

Taking the logarithm of both sides (with base 2) gives:

t/5 = log2(3)

Multiplying both sides by 5, we get:

t = 5 x log2(3)

Using a calculator or a computer program to evaluate the logarithm, we get:

t ≈ 7.58

Therefore, the colony will need to triple in number after about 7.58 days.

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Answer:

B

Step-by-step explanation:

1 1/2 x 1/3

=1/2

So therefore the answer is B (1/2 cup)

Answer:

The answer is B ( 1/2 cup)

The measure of angle A is 20 degrees, the measure of angle B is 65 degrees, and the measure of angle C is 95 degrees.

To find the measure of the angles in triangle ABC, we first need to determine the total ratio of measures.

The total ratio is 4 + 13 + 19 = 36.

Next, we can use the ratios to find the measure of each angle.

Let x be the measure of the smallest angle in triangle ABC.

Then the measures of the angles are:

Angle A = 4x
Angle B = 13x
Angle C = 19x

We know that the sum of the angles in a triangle is 180 degrees, so we can set up the equation:

4x + 13x + 19x = 180

Simplifying, we get:

36x = 180

Dividing both sides by 36, we get:

x = 5

Therefore, the measures of the angles in triangle ABC are:

Angle A = 4x = 4(5) = 20 degrees
Angle B = 13x = 13(5) = 65 degrees
Angle C = 19x = 19(5) = 95 degrees

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Answer:

3/5

Step-by-step explanation:

If it takes 15 minutes to complete one lap around the park, then the runner completes 1/15 of a lap in 1 minute.

To find out what fraction of a lap the runner completes in 9 minutes, we can multiply the fraction completed in 1 minute by the number of minutes elapsed:

Fraction completed in 9 minutes = (1/15) x 9 = 9/15 = 3/5

Therefore, the runner has completed 3/5 of a lap in 9 minutes

-43x < 79 - 16

To solve the inequality −43x + 16 < 79, we need to isolate the variable x.

Let's begin by subtracting 16 from both sides of the inequality:

−43x + 16 - 16 < 79 - 16

Simplifying the equation, we have:

−43x < 63

Next, we divide both sides of the inequality by -43. However, when we divide by a negative number, the direction of the inequality sign will be flipped:

x > 63 / -43

Simplifying further, we have:

x > -1.465

Therefore, the solution to the inequality is x > -1.465.

In interval notation, we can represent the solution as (-1.465, ∞), indicating that x is greater than -1.465 and extends indefinitely towards positive infinity.

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The measure of a central angle of a regular polygon with 7 sides is approximately 51.4 degrees.

For a regular polygon with 7 sides, we can substitute n = 7 into the formula:

central angle = 360 degrees / 7

central angle ≈ 51.4 degrees

A regular polygon is a polygon with equal sides and equal angles. The measure of each interior angle of a regular polygon with n sides is given by the formula:

interior angle = (n-2) x 180 degrees / n

For example, for a regular polygon with 7 sides:

interior angle = (7-2) x 180 degrees / 7

interior angle = 5 x 180 degrees / 7

interior angle ≈ 128.6 degrees

Since a central angle of a regular polygon is an angle formed by two consecutive radii from the center of the polygon, the measure of a central angle is equal to the measure of the exterior angle.

The measure of an exterior angle of a regular polygon with n sides is given by the formula:

exterior angle = 360 degrees / n

For a regular polygon with 7 sides, we can use the formula above to find the measure of each exterior angle:

exterior angle = 360 degrees / 7

exterior angle ≈ 51.4 degrees

Therefore, the measure of a central angle of a regular polygon with 7 sides is approximately 51.4 degrees, rounded to the nearest tenth of a degree as requested.

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To generate the sequence, we start with a1 = 4, and then use the formula an = an-1 + 7 for n > 1.

So, to find the first 3 terms of the sequence, we can use the formula:

a2 = a1 + 7 = 4 + 7 = 11

a3 = a2 + 7 = 11 + 7 = 18

The first 3 terms of the sequence are 4, 11, and 18.

So, the answer is 4, 11, 18, which corresponds to the third option.

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The volume of the frustum is approximately 634.3 cubic centimeters.

Let the radius of the smaller cone be 'r' and the radius of the bigger cone be 'R'.

Since the height of the smaller cone is 8 cm and its volume is 160 cm³, we have:

1/3 * π * r² * 8 = 160

r² = 60/π

r ≈ 4.03 cm

Now, using similar triangles, we can find the radius 'R' of the bigger cone:

(R - r)/16 = R/24

24R - 24r = 16R

R = 2r/3

R ≈ 2.69 cm

Therefore, the volume of the frustum is:

1/3 * π * (2.69² + 2.69*4.03 + 4.03²) * 16 - 1/3 * π * 4.03² * 8

≈ 634.3 cm³

So, the volume of the frustum is approximately 634.3 cubic centimeters.

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