An agent claims that there is no difference between the pay of safeties and linebackers in the NFL. A survey of 15 safeties found an average salary of $501,580 and a survey of 15 linebackers found on average salary of $513,360. If the standard deviation in the first sample was $20,00 and the standard deviation in the second sample is $18,000 is the agent correct? Use a=0. 5

Answer:

8/10

Step-by-step explanation:

Formula

Cosine A = Adjacent side / Hypotenuse

Here,

Adjacent side = 8

Hypotenuse = 10

Answer

Cosine A = 8/10

To find the slope of the secant over the interval from x=2 to x=2.001, we need to use the formula for the slope of a secant line:

slope = (f(2.001) - f(2)) / (2.001 - 2)

First, we need to find the values of f(2.001) and f(2):

f(2) = 2^3 = 8
f(2.001) = 2.001^3 ≈ 8.012006001

Plugging these values into the formula, we get:

slope = (8.012006001 - 8) / (2.001 - 2)
slope ≈ 1.006001

Therefore, the slope of the secant over the interval from x=2 to x=2.001 is approximately 1.006001. So the answer is B. slope = 1.006001.
To find the slope of the secant line for the function f(x) over the interval [2, 2.001], we will use the slope formula:

slope = (f(2.001) - f(2)) / (2.001 - 2)

First, find the values of f(2) and f(2.001) by plugging the values of x into the given function f(x) = x^3:

f(2) = 2^3 = 8
f(2.001) = (2.001)^3 ≈ 8.006012

Now, plug these values into the slope formula:

slope = (8.006012 - 8) / (2.001 - 2) = 0.006012 / 0.001 = 6.012

The slope of the secant line over the interval is approximately 6.012. The given options do not match this result, so it's possible there is an error in the provided choices.

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The ratio expressing the slope of line k is -2/3.

The ratio expressing the slope of k can be found by using the slope formula, which is: slope = (y₂ - y₁) / (x₂ - x₁), where (x₁, y₁) and (x₂, y₂) are the two given points on the line.

Plugging in the given values, we get:

slope = (-1 - 3) / (2 - (-4))

slope = -4 / 6

slope = -2/3

Therefore, the slope of the line passing through the two given points is -2/3.

To express this slope as a ratio, we can write it as:

-2:3

which means that for every decrease of 2 units in the y-coordinate, there is a corresponding decrease of 3 units in the x-coordinate.

This ratio can also be written as 2: -3 to indicate that for every increase of 2 units in the y-coordinate, there is a corresponding decrease of 3 units in the x-coordinate.

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The angle between u and v is approximately 104.66 degrees. To find the angle between two vectors u and v, we can use the dot product formula:

cos(theta) = (u · v) / (||u|| ||v||)

where ||u|| and ||v|| are the magnitudes of u and v, respectively.

First, let's compute the dot product of u and v:

u · v = [tex](4)(5) + (3)(-12) = 20 - 36 = -16[/tex]

Next, we need to find the magnitudes of u and v:

[tex]||u||[/tex] = sqrt([tex]4^2[/tex] + [tex]3^2[/tex]) = 5

[tex]||v||[/tex] = sqrt([tex]5^2[/tex] + (-12[tex])^2[/tex]) = 13

Now we can substitute these values into the formula for cos(theta):

cos(theta) = [tex](-16) / (5 * 13) = -0.246[/tex]

To find the angle theta, we take the inverse cosine of cos(theta):

theta = [tex]cos^-1[/tex](-0.246) = 104.66 degrees

Therefore, the angle between u and v is approximately 104.66 degrees.

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Answer:

A

Step-by-step explanation:

Let's call the length of each of the other two sides x. Since the triangle is isosceles, it has two sides of equal length. Therefore, the perimeter of the triangle can be expressed as 6 + x + x Simplifying this equation, we get  2x + 6 We know that the perimeter is 22 cm so we can set up an equation and solve for x. 22 = 2x + 6 Subtracting 6 from both sides, we get  16 = 2x Dividing both sides by 2, we get x=8

Answer:

Area = Length x Width

Area = 6 feet x 4 feet

Area = 24 square feet

The equation of the line in point-slope form is y - 2 = -3(x + 9), and in slope-intercept form is y = -3x - 25.

To find the equation of the line passing through(- 9,2) and parallel to the line y =  – 3x 3, we need to use the fact that  resemblant lines have the same  pitch.  

The  pitch of the given line y =  – 3x 3 is-3,

so the  pitch of the  resemblant line we want to find is also-3.   Point-  pitch form  Using the point-  pitch form, the equation of the line is given by

 y- y1 =  m( x- x1),

where( x1, y1) is the given point and

m is the  pitch.  

Substituting the given values,

we get   y- 2 = -3( x-(- 9))  

y- 2 = -3( x 9)  

y- 2 = -3 x- 27  

y = -3 x- 25

Hence in slope-intercept form is y = -3x - 25.

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a. In the geometric series for f(x) to be convergent, x < - 1

b.  When x =  1¹/₂, the sum to infinity of the geometric series is f(x) = -1.4

A geometric series is the sum of terms of a geometric sequence.

a. Given the series f(x) = ∑ₙ = ₁⁰⁰(x + 2)ⁿ, we want to determine the value of x for which f(x) converges.

Now, let the general term of the sequence be Uₙ = (x + 2)ⁿ, to determine the value of x for which the series is convergent, we use the D'alembert ratio test which states that for a series to be convergent, then

Uₙ₊₁/Uₙ < 1.

So, we have that Uₙ₊₁ = (x + 2)ⁿ⁺¹

So, Uₙ₊₁/Uₙ =  (x + 2)ⁿ⁺¹/ (x + 2)ⁿ

= x + 2

For convergence

Uₙ₊₁/Uₙ < 1

So,

x + 2 < 1

x < 1 - 2

x < - 1

So, for f(x) to be convergent, x < - 1

b. To find the value of f(x) when x = 1¹/₂, we proceed as folows

Since  f(x) = ∑ₙ = ₁⁰⁰(x + 2)ⁿ, substituting x =  1¹/₂ = 1.5 into the equation, we have

 f(x) = ∑ₙ = ₁⁰⁰(1.5 + 2)ⁿ

f(x) = ∑ₙ = ₁⁰⁰(3.5)ⁿ

= 3.5 + 3.5² + 3.5³ + ...

Since this is a geometric progression with sum to infinity, we see that the first term is a = 3.5 and the common ratio is r = ar/a = 3.5²/3.5 = 3.5

Since the sum to infinity of a geometric progression is

S₀₀ = a/(1 - r)

So, substituting the values of the variables into the equation, we have that

S₀₀ = a/(1 - r)

S₀₀ = 3.5/(1 - 3.5)

S₀₀ = 3.5/-2.5

S₀₀ = -1.4

So, when x =  1¹/₂, f(x) = -1.4

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"The median student height in Class A is equal to the median student height in Class B."

Based on the given information, we can conclude that the median student height in Class A is e.

qual to the median student height in Class B. However, we cannot make any definitive conclusions about the range or mean heights of the two classes based on this limited information.

The range is a measure of the spread of the data and is calculated by subtracting the minimum value from the maximum value. Without knowing the actual height values for each student in both classes, we cannot compare the ranges and determine which class has a greater range.

The mean height is a measure of the central tendency of the data and is calculated by adding up all the heights and dividing by the total number of students. Again, without knowing the actual height values, we cannot calculate the mean heights for each class and compare them.

Therefore, the only conclusion that can be made based on the given information is that the median student height in Class A is equal to the median student height in Class B.

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The interquartile range (IQR) of the given data set {3, 8, 11, 11, 12, 13, 15} is 5.

To find the interquartile range (IQR) of a data set, follow these steps:

Order the data set in ascending order: 3, 8, 11, 11, 12, 13, 15.

Find the first quartile (Q1): This is the median of the lower half of the data set. In this case, the lower half is {3, 8, 11}. Since there is an odd number of data points, the median is the middle value, which is 8.

Find the third quartile (Q3): This is the median of the upper half of the data set. In this case, the upper half is {12, 13, 15}. The median of this set is 13.

Calculate the interquartile range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). In this case, IQR = Q3 - Q1 = 13 - 8 = 5.

Therefore, the interquartile range (IQR) of the given data set {3, 8, 11, 11, 12, 13, 15} is 5.

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it's not possible to sell at least $675 worth of tickets while also staying within the seating limit of 150 tickets. The theater may need to consider raising ticket prices or finding a larger venue to accommodate more audience members.

Let's denote the number of adult tickets sold as "A" and the number of child tickets sold as "C". Then we can set up the following system of equations to represent the given information:

A + C ≤ 150    (limit on seating)

12A + 7.5C ≥ 675   (minimum revenue required)

We want to find the possible values of A and C that satisfy these equations.

One way to solve this system is to graph the inequalities and find the region of overlap. However, since there are only two variables, we can also use substitution or elimination to solve for one variable in terms of the other.

Let's solve for A in terms of C using the first equation:

A ≤ 150 - C

Substitute this expression for A in the second equation:

12(150 - C) + 7.5C ≥ 675

Expand and simplify:

1800 - 12C + 7.5C ≥ 675

-4.5C ≥ -1125

C ≤ 250

So the number of child tickets sold must be less than or equal to 250.

Now we can substitute this inequality into the first equation to find the maximum number of adult tickets sold:

A + 250 ≤ 150

A ≤ -100

This doesn't make sense, since we can't sell negative tickets. Therefore, there is no solution that satisfies the given conditions.

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The full t-table will be:

Hours (x)                               Money (y)

  0                                           $0

  1                                            $7.5

  2                                           $15

  3                                           $22.5

  4                                           $30

  5                                           $37.5

Given that the neighbors paid $45 for 6 hours to babysit their children.

So the rate to babysit is = $45/6 = $7.50 per hour.

So the function rule for the situation is given by,

y = 7.50x, where y is the total earning by babysitting neighbors' children and x is the number of hour to babysit.

when x = 0, y = 7.5*0 = $0

when x = 1, y = 7.5*1 = $7.5

when x =2, y = 7.5*2 = $15

when x = 3, y = 7.5*3 = $22.5

when x = 4, y = 7.5*4 = $30

when x = 5, y = 7.5*5 = $37.5

So the t-table will be:

Hours (x)                               Money (y)

  0                                           $0

  1                                            $7.5

  2                                           $15

  3                                           $22.5

  4                                           $30

  5                                           $37.5

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Answer: [tex](w^{\frac{1}{5} } )^{3}[/tex]

Step-by-step explanation:

The root of a number, say [tex]\sqrt[n]{x}[/tex] is equal to [tex]x^{\frac{1}{n} }[/tex]. So, [tex]\sqrt[5]{w^{3} } = (w^{3} )^{\frac{1}{5} }[/tex]. Since when dealing with an exponent of a number raised to an exponent you multiply the exponents, due to the associative property it does not matter which order you do the exponents in. So, [tex](w^{3} )^{\frac{1}{5} }= (w^{\frac{1}{5} } )^{3}[/tex], which is answer D.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

A probability can be classified as experimental or theoretical, as follows:

The dice has eight sides, hence the theoretical probability of rolling a six is given as follows:

1/8 = 0.125 = 12.5%.

(each of the eight sides is equally as likely, and a six is one of these sides).

The experimental probabilities are obtained considering the trials, hence:

The more trials, the closer the experimental probability should be to the theoretical probability.

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The critical points of f(x) are x = 0 and x = e^(-1/2) / 3, and x = e^(-1/2) / 3 corresponds to a local minimum of f(x). Cmin = e^(-1/2) / 3 and Cmax = 0.

Taking the derivative of f(x) with respect to x using the product rule and the chain rule, we get:

f'(x) = 14x ln(3x) + 7x

Setting f'(x) equal to zero and solving for x, we get:

14x ln(3x) + 7x = 0

Factor out x:

7x(2ln(3x) + 1) = 0

So either x = 0 or 2ln(3x) + 1 = 0.

If x = 0, then f'(x) = 0 and x is a critical point.

If 2ln(3x) + 1 = 0, then ln(3x) = -1/2 and 3x = e^(-1/2). Solving for x, we get:

x = e^(-1/2) / 3

So e^(-1/2) / 3 is also a critical point.

Now we need to apply the second derivative test to determine whether these critical points correspond to a local minimum or maximum.

Taking the second derivative of f(x), we get:

f''(x) = 14 ln(3x) + 21

For x = 0, we have:

f''(0) = 14 ln(0) + 21

The natural logarithm of zero is undefined, so the second derivative does not exist at x = 0. Therefore, we cannot apply the second derivative test at x = 0.

For x = e^(-1/2) / 3, we have:

f''(e^(-1/2) / 3) = 14 ln(1/e^(1/2)) + 21

= -14/2 + 21

= 7/2

Since the second derivative is positive at this point, we can conclude that x = e^(-1/2) / 3 is a local minimum of f(x).

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The value of P from the formula  I= PRT/100 when I = 20, R= 5 and T= 4 is 100.The formula I = PRT/100 is used to calculate the simple interest on a principle amount, where P is the principle amount, R is the interest rate, and T is the time period.

To find the value of P from the formula I = PRT/100 when I = 20, R = 5, and T = 4,

Therefore the value of P is 100.

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Let's assume that the cylindrical can has a height of "h" and a radius of "r". We want to find the values of "h" and "r" that minimize the amount of material needed to manufacture the can.

The amount of material needed to manufacture the can can be represented by the surface area of the can, which is the sum of the area of the top and bottom circles and the lateral area of the cylinder.

The area of the top and bottom circles can be calculated using the formula for the area of a circle:

A_top = A_bottom = πr^2

The lateral area of the cylinder can be calculated using the formula for the lateral surface area of a cylinder:

A_lateral = 2πrh

Therefore, the total surface area of the cylindrical can can be calculated as:

A_total = A_top + A_bottom + A_lateral

= 2πr^2 + 2πrh

Now, we need to express "h" in terms of "r" and the volume of the can, which is given as 180 cm^3. The formula for the volume of a cylinder is:

V = πr^2h

Substituting the given value of the volume and solving for "h", we get:

h = 180/(πr^2)

Substituting this expression for "h" in the equation for the total surface area, we get:

A_total = 2πr^2 + 2πr(180/(πr^2))

= 2πr^2 + 360/r

To find the values of "r" and "h" that minimize the surface area, we need to take the derivative of "A_total" with respect to "r", set it equal to zero, and solve for "r".

dA_total/dr = 4πr - 360/r^2 = 0

Solving for "r", we get:

r = (360/(4π))^(1/3) ≈ 4.35 cm

Substituting this value of "r" in the expression for "h", we get:

h = 180/(π(4.35)^2) ≈ 3.9 cm

Therefore, the height and radius that minimize the amount of material needed to manufacture the can are approximately 3.9 cm and 4.35 cm, respectively.

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To prove that the expression (36^5−6^9)(38^9−38^8) is divisible by 30, we need to show that it is divisible by both 2 and 3.

First, we can factor out a 6^9 from the first term:

(36^5−6^9)(38^9−38^8) = 6^9(6^10-36^5)(38^9-38^8)

Notice that 6^10 can be written as (2*3)^10, which is clearly divisible by both 2 and 3. Also, 36 is divisible by 3, so 36^5 is divisible by 3^5. Thus, we can write:

6^9(6^10-36^5) = 6^9(2^10*3^10 - 3^5*2^10) = 6^9*2^10*(3^10 - 3^5)

Since 2^10 is divisible by 2, and 3^10 - 3^5 is clearly divisible by 3, the whole expression is divisible by both 2 and 3, and therefore divisible by 30.

To prove that the expression is divisible by 37, we can use Fermat's Little Theorem. Fermat's Little Theorem states that if p is a prime number and a is any positive integer not divisible by p, then a^(p-1) is congruent to 1 modulo p, which can be written as a^(p-1) ≡ 1 (mod p).

In this case, p = 37, and 36 is not divisible by 37. Therefore, by Fermat's Little Theorem:

36^(37-1) ≡ 1 (mod 37)

Simplifying the exponent gives:

36^36 ≡ 1 (mod 37)

Similarly, 38 is not divisible by 37, so:

38^(37-1) ≡ 1 (mod 37)

Simplifying the exponent gives:

38^36 ≡ 1 (mod 37)

Now we can use these congruences to simplify our expression:

(36^5−6^9)(38^9−38^8) ≡ (-6^9)(-1) ≡ 6^9 (mod 37)

We know that 6^9 is divisible by 3, so we can write:

6^9 = 2^9*3^9

Since 2 and 37 are relatively prime, we can use Euler's Totient Theorem to simplify 2^9 (mod 37):

2^φ(37) ≡ 2^36 ≡ 1 (mod 37)

Therefore:

2^9 ≡ 2^9*1 ≡ 2^9*2^36 ≡ 2^(9+36) ≡ 2^45 (mod 37)

Now we can simplify our expression further:

6^9 ≡ 2^45*3^9 ≡ (2^5)^9*3^9 ≡ 32^9*3^9 (mod 37)

Notice that 32 is congruent to -5 modulo 37, since 32+5 = 37. Therefore:

32^9 ≡ (-5)^9 ≡ -5^9 ≡ -1953125 ≡ 2 (mod 37)

So:

6^9 ≡ 2*3^9 ≡ 2*19683 ≡ 39366 ≡ 0 (mod 37)

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An inequality to represent this situation is 22.15d + 0.07(275) ≤ 130. Aubrey can afford to rent the car for up to 5 days while staying within her budget.

Let's denote the number of days Aubrey can rent the car as "d". We know that the rental car company charges $22.15 per day and $0.07 per mile. Aubrey has a budget of $130 and plans to drive 275 miles. We can create an inequality to represent this situation:

22.15d + 0.07(275) ≤ 130

Now, let's solve the inequality:

22.15d + 19.25 ≤ 130

Subtract 19.25 from both sides:

22.15d ≤ 110.75

Now, divide by 22.15 to find the maximum number of days Aubrey can rent the car:

d ≤ 110.75 / 22.15

d ≤ 5

So, Aubrey can afford to rent the car for up to 5 days while staying within her budget.

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The average rate of change of the function f(x) in the interval [tex]-3 \leq x\leq -2[/tex] is -15.

We are given an interval in which we have to find the average rate of change of the function f(x) based on the graph given in the question. The interval given is -3 [tex]\leq[/tex] x [tex]\leq[/tex] -2. We are going to apply the formula for an average rate of change to find the rate of change of the given function in the given interval.

The formula we will use is

The average rate of change = [tex]\frac{f(b) - f(a) }{b - a}[/tex]

Identifying the points in the graph,

a = 3, f(a) = -10

b = -2, f(b) = -25

We will substitute these values in the formula for the average rate of change.

The average rate of change = [tex]\frac{-25-(-10)}{-2-(-3)}[/tex]

The average rate of change = ( -25 + 10)/(-2 +3)

= -15/1

= -15.

Therefore, the average rate of change of the function in the interval [tex]-3 \leq x \leq -2[/tex] is -15.

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The complete question is "The function y=f(x)y=f(x) is graphed below. What is the average rate of change of the function f(x)f(x) on the interval -3\le x \le -2 −3≤x≤−2? "

The percent increase in temperature of the liquid is 61.9%. This means that the temperature increased by 61.9% of its original value.

When we want to calculate the percent increase in a value, we need to compare the new value to the old value.

In this case, the old value is the initial temperature of the liquid, which is 63 °F, and the new value is the final temperature of the liquid, which is 102 °F.

To calculate the percent increase, we use the formula I mentioned earlier, which subtracts the old value from the new value, divides the result by the old value.

And then multiplies the quotient by 100% to express the result as a percentage.

So, for this experiment, we can calculate the percent increase in temperature as:

((102 - 63) / 63) x 100% = 61.9%

This means that the temperature of the liquid increased by 61.9% of its original value. Alternatively, we can also say that the final temperature is 161.9% of the initial temperature.

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a. The critical number of f is undefine

b. The open interval(s) on  f is increasing on  (e,∞) and the open interval(s) on which f is decreasing on  (0,1) and (1,e).

c. The local minimum value(s) is 0 and there's no local maximum value.

d. Concave downward on (0, e^1/2) and concave upward on (e^1/2, ∞).

e. The inflection point(s) of the graph of f is (e^1/2, e(ln e^1/2 - 1)^2).

(a) To find the critical numbers of f, we need to find where the derivative of f is zero or undefined.

f'(x) = 2x ln x + x - 2x = 2x (ln x - 1) = 0

This gives us x = 1 or x = e. However, f'(x) is undefined at x = 0, so we also need to check this point.

(b) To determine the intervals of increase and decrease, we need to test the sign of f'(x) on each interval.

When x < 1, ln x < 0, so ln x - 1 < -1, and f'(x) < 0.

When 1 < x < e, ln x > 0, so ln x - 1 < 0, and f'(x) < 0.

When x > e, ln x > 1, so ln x - 1 > 0, and f'(x) > 0.

Therefore, f is decreasing on (0,1) and (1,e), and increasing on (e,∞).

(c) To find the local minimum and maximum values, we need to check the critical points and the endpoints of the intervals.

f(1) = 0 is a local minimum.

f(e) = e^2 (ln e - 1) = e^2 (1 - 1) = 0 is also a local minimum.

(d) To find the intervals of concavity, we need to test the sign of f''(x) on each interval.

f''(x) = 2 ln x - 1

When x < e^1/2, ln x < 1/2, so f''(x) < 0, and f is concave downward on (0, e^1/2).

When x > e^1/2, ln x > 1/2, so f''(x) > 0, and f is concave upward on (e^1/2, ∞).

(e) To find the inflection points, we need to find where the concavity changes.

f''(x) = 0 when ln x = 1/2, or x = e^1/2.

Therefore, the inflection point is (e^1/2, f(e^1/2)) = (e^1/2, e(ln e^1/2 - 1)^2).

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The Taylor series centered at 4 for f(x) = ln(1+x) is: f(x) = ln(5) + (x-4)/5 - (x-4)^2/50 + (2/125)*(x-4)^3 - (6/625)*(x-4)^4 + ... The interval of convergence for this series is (-∞, ∞).

Let's find the Taylor series centered at 4 for the function f(x) = ln(1+x).

We can use the formula for the Taylor series coefficients:

f^(n)(x) = (-1)^(n-1) * (n-1)! / (1+x)^n

where f^(n)(x) denotes the nth derivative of f(x).

Using this formula, we can find the Taylor series centered at 4: f(4) = ln(1+4) = ln(5) f'(x) = 1/(1+x), so f'(4) = 1/5 f''(x) = -1/(1+x)^2, so f''(4) = -1/25 f'''(x) = 2/(1+x)^3, so f'''(4) = 2/125 f''''(x) = -6/(1+x)^4, so f''''(4) = -6/625 and so on.

Putting it all together, the Taylor series centered at 4 for f(x) is:

f(x) = ln(5) + (x-4)/5 - (x-4)^2/50 + (2/125)*(x-4)^3 - (6/625)*(x-4)^4 + ...

To find the interval of convergence, we can use the ratio test:

lim |(f^(n+1)(x) / f^(n)(x)) * (x-4)/(x-4)| = lim |(-1) * (n+1) * (1+x)^2 / (1+x)^n| * |x-4| = lim (n+1) * (1+x)^2 / (1+x)^n * |x-4| = lim (n+1) / (1+x)^(n-2) * |x-4|

Since this limit is zero for all values of x, the interval of convergence is the entire real line, (-∞, ∞).

So the final answer is: The Taylor series centered at 4 for f(x) = ln(1+x) is: f(x) = ln(5) + (x-4)/5 - (x-4)^2/50 + (2/125)*(x-4)^3 - (6/625)*(x-4)^4 + ... The interval of convergence for this series is (-∞, ∞).

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Answer:

Step-by-step explanation:

Let's use a system of equations to solve the problem.

We know that Bonnie bought a total of 12 bottles, so:

p + a = 12

We also know that Bonnie spent a total of $15, so:

1p + 1.75a = 15

We can solve this system of equations by substitution or elimination. Here, we'll use substitution:

p = 12 - a (from the first equation)

1(12 - a) + 1.75a = 15 (substituting p in the second equation)

12 - a + 1.75a = 15

0.75a = 3

a = 4

So Bonnie bought 4 bottles of apple juice. We can find the number of bottles of pineapple juice by substituting a=4 into the first equation:

p + 4 = 12

p = 8

Therefore, Bonnie bought 8 bottles of pineapple juice and 4 bottles of apple juice.

Power is the rate at which work is done or energy is transferred. In this case, the girl used a force of 98 N to lift the painting to a height of 0.5 m in 0.75 seconds, resulting in 49 J of work done. The power used was calculated to be approximately 65.33 watts.

To calculate the power used by the girl while lifting the painting, we need to use the formula: Power (P) = Work (W) / time (t).

Firstly, we need to calculate the work done by the girl in lifting the painting. Work is defined as the product of force and distance. As there is no information about the force applied, we will assume that the girl lifted the painting with a constant force. Therefore, the work done can be calculated as:

Work (W) = force x distance

Here, the distance is 0.5 m, and we can use the formula for weight to calculate the force required to lift the painting. As we know that the mass of the painting is not given, we can assume it to be 10 kg (a medium-sized painting).

Weight (Wt) = mass x acceleration due to gravity
Wt = 10 kg x 9.8 m/s² = 98 N

Therefore, the work done by the girl is:

W = 98 N x 0.5 m = 49 J

Now, we can use the formula for power to calculate the power used by the girl.

P = W / t
P = 49 J / 0.75 s
P = 65.33 W (approx.)

Therefore, the girl used approximately 65.33 watts of power while lifting the painting.

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The girl used 65.3 watts of power to lift the painting.

To calculate power, we need to know the work done and the time taken.

We can use the formula:

power = work/time

The work done is equal to the force applied multiplied by the distance moved. Since we don't know the force, we can use the formula for work in terms of mass, gravity, and height:

work = mgh

where m is the mass, g is the acceleration due to gravity, and h is the height lifted.

Assuming the painting has a mass of 10 kg and the acceleration due to gravity is 9.8 m/s², the work done is:

work = (10 kg) x (9.8 m/s²) x (0.5 m) = 49 J

The time taken is 0.75 seconds.

So the power used is:

power = work/time = 49 J / 0.75 s = 65.3 watts

Therefore, the girl used 65.3 watts of power to lift the painting.

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Answer:

h = 24 cm

Step-by-step explanation:

Given:

C (base) = 60π cm

V (volume) = 21,600π cm^3

Find: h (height) - ?

[tex]c = 2\pi \times r[/tex]

[tex]2\pi \times r = 60\pi[/tex]

[tex]2r = 60[/tex]

[tex]r = 30[/tex]

We found the length of the radius

v = 1/3 × πr^2 × h

1/3 × π × 900 × h = 21600π

Multiply both sides by 3:

2700π × h = 64800π / : 2700π

h = 24 cm

If the eastbound train travels at 75 miles per hour, it will take the two trains 2.8 hours to be 476 miles apart.

To solve the problem, we can use the formula:

distance = rate × time

Let's call the time it takes for the two trains to be 476 miles apart "t".

The westbound train travels at a rate of 95 miles per hour, so in time "t" it will travel a distance of 95t miles. Similarly, the eastbound train travels at a rate of 75 miles per hour, so in time "t" it will travel a distance of 75t miles.

To find the total distance between the two trains after time "t", we add the distances traveled by each train:

95t + 75t = 476

Combining like terms and solving for "t", we get:

170t = 476

t = 2.8 hours

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Answer:

x = 4

Step-by-step explanation:

10 - 4x + 6 - 2x = -2x

10 - 6x + 6 = -2x

16 - 6x = -2x

16 - 4x = 0

-4x = -16

x = 4

Answer:

x = 4

Step-by-step explanation:

Add like terms

-6x + 16 = -2x

Bring like terms to the opposite side

16 = 4x

Divide both sides by 4

x = 4

If the base and slant height both are divided by a factor of 3, the surface area will get multiplied by factor, option b, 3².

Here we are given that the square pyramid has a base of 3m and a slant height of 6 m.

The surface area formula for a square pyramid with square edge a and slant height h is

a² + 2a√(a²/4  + h²)

Here, a = 3 and h = 6. Hence we get

3² + 2X3√(3²/4  + 6²)

= 46.108

Now the base and slant height are multiplied by 3. Hence we will get

9a² + 6a√(9a²/4  + 9h²)

414.972

Now, dividing both obtained we will get

414.972/46.108

= 9

= 3²

Hence, it should be multiplied by 3².

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An equation shows the number of points available, p, in round n of the game show is p=20·5ⁿ. Therefore, option D is the correct answer.

The given geometric sequence is 20, 100, 500, 2500,...

Here, a=20

Common ratio (r) = 100/20 = 5

The formula to find nth term of the geometric sequence is [tex]a_n=ar^n[/tex]. Where, a = first term of the sequence, r= common ratio and n = number of terms.

Here, aₙ=20·5ⁿ

Therefore, option D is the correct answer.

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