For the case of Theorem 10.14 , write a two-column proof.

Case 1

Given: secants → AD and → AE

Prove: m< A =1/2(m DE -m BC)

Karma can buy 1000 shares of T-Bank.

When something is "invested," money or other resources are used with the intention of making a profit, creating income, or appreciating in value over time.

The price of a share at a 25% premium is calculated as follows:

100 + (25/100) * 100 = 125.

Thus, Karma can purchase the following items for Nu 125,000:

125000 / 125 = 1000

So, Karma can buy 1000 shares of T-Bank.

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Answer:

114

Step-by-step explanation:

first lets add the ones places = 4+0 which is 4

ones place = 4

Then lets add tens places = 2+9 = 11

tens place = 11

so answer will be 114

Answer:

24+90=114 hope that helps

Certify Completion Icon Tries remaining: 3 A high school has 52 players on the football team. The summary of the players' weights is given in the box plot. The median weight of the players on the football team is 160 pounds.

The box plot shows that the median weight of the players is the middle value of the distribution. In this case, the median weight is halfway between the 26th and 27th players, which is 160 pounds.

The box plot also shows that the minimum weight of the players is 150 pounds and the maximum weight is 212 pounds. The interquartile range, which is the range of the middle 50% of the data, is 20 pounds.

In conclusion, the median weight of the players on the football team is 160 pounds. This means that half of the players on the team weigh more than 160 pounds and half of the players weigh less than 160 pounds.

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To calculate the degrees of freedom for a small-sample test of hypothesis, we use the formula:

df = (n1 - 1) + (n2 - 1)

Given that n1 = n2 = 16, we can substitute these values into the formula:

df = (16 - 1) + (16 - 1)

= 15 + 15

= 30

Therefore, the degrees of freedom associated with the small-sample test of hypothesis is 30. So, the correct option is D.

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The distance from -4 to 1 is 5 units.

The correct number line and expression to find the distance from -4 to 1 are:

Number line: -4 -3 -2 -1 0 1

Expression: |-4 - 1|

To find the distance, we subtract the smaller number (-4) from the larger number (1) and take the absolute value:

|-4 - 1| = |-5| = 5

Therefore, the distance from -4 to 1 is 5 units.

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I'll do problem 13 to get you started.

The expression \(4\left(\frac{2^n}{7^n}\right)\) is the same as \(4\left(\frac{2}{7}\right)^n\)

Then we can do a bit of algebra like so to change that n into n-1

\(4\left(\frac{2}{7}\right)^n\\\\4\left(\frac{2}{7}\right)^n*1\\\\4\left(\frac{2}{7}\right)^n*\left(\frac{2}{7}\right)^{0}\\\\4\left(\frac{2}{7}\right)^n*\left(\frac{2}{7}\right)^{1-1}\\\\4\left(\frac{2}{7}\right)^n*\left(\frac{2}{7}\right)^{1}*\left(\frac{2}{7}\right)^{-1}\\\\4*\left(\frac{2}{7}\right)^{1}\left(\frac{2}{7}\right)^n*\left(\frac{2}{7}\right)^{-1}\\\\\frac{8}{7}\left(\frac{2}{7}\right)^{n-1}\\\\\)

This is so we can get the expression in a(r)^(n-1) form

Note that -1 < 2/7 < 1, which satisfies the condition that -1 < r < 1. This means the infinite sum converges to some single finite value (rather than diverge to positive or negative infinity).

We'll plug those a and r values into the infinite geometric sum formula below

S = a/(1-r)

S = (8/7)/(1 - 2/7)

S = (8/7)/(5/7)

S = (8/7)*(7/5)

S = 8/5

S = 1.6

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

Answer in fraction form = 8/5

Answer in decimal form = 1.6

The expression that correctly calculates the perimeter of the shape is given as follows:

P = 2(6s + πr).

In which:

The perimeter of a square of side length s is given as follows:

P = 4s.

Hence, for three squares, the perimeter is given as follows:

P = 3 x 4s

P = 12s.

The perimeter, which is the circumference of a semicircle of radius r, is given by the equation presented as follows:

C = πr.

Hence the perimeter of two semicircles is given as follows:

C = 2πr.

The perimeter of the entire shape is given by the sum of the perimeter of each shape, hence:

P = 12s + 2πr.

P = 2(6s + πr).

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Answer:

t = 56 degree

Step-by-step explanation:

A triangle is 180 degrees.

The angle on the right is a vertical angle to the 34-degree angle, meaning their angles are equal.

We know two angles; one is 90 degrees, and the other is 34 degrees. To find the angle t, we take

180 - 90 - 34 = 56 degree

So, t = 56 degree

The velocity of the top of the ladder is 20.62 feet per second.

We can use the Pythagorean theorem to relate the distance between the wall and the base of the ladder to the height of the ladder. Let h be the height of the ladder, then we have:

h² + 7² = 25²

h² = 576

h = 24 feet

We can then use the chain rule to find the velocity of the top of the ladder. Let v be the velocity of the base of the ladder, then we have:

h² + (dx/dt)² = 25²

2h (dh/dt) + 2(dx/dt)(d²x/dt²) = 0

Simplifying and plugging in h = 24 and dx/dt = -2, we get:

(24)(dh/dt) - 2(d²x/dt²) = 0

Solving for (d²x/dt²), we get:

(d²x/dt²) = (12)(dh/dt)

We can find (dh/dt) using the Pythagorean theorem and the fact that the ladder is sliding down the wall at a rate of 2 feet per second:

h² + (dx/dt)² = 25²

2h(dh/dt) + 2(dx/dt)(d²x/dt²) = 0

Substituting h = 24, dx/dt = -2, and solving for (dh/dt), we get:

(dh/dt) = -15/8

Finally, we can find (d²x/dt²) by plugging in (dh/dt) and solving:

(d²x/dt²) = (12)(dh/dt) = (12)(-15/8) = -45/2

Therefore, the velocity of the top of the ladder is 20.62 feet per second.

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The largest value that f(4) can possibly be is 29.

The mean value theorem states that for a function f(x) that is continuous on the closed interval [a, b] and differentiable on the open interval (a, b), there exists a number c in the open interval (a, b) such that:

f(b) - f(a) = f'(c)(b - a)

In this case, we are given that f(0) = -3 and that f'(x) ≤ 8 for all values of x. To determine how large f(4) can possibly be, we can use the mean value theorem with a = 0 and b = 4:

f(4) - f(0) = f'(c)(4 - 0)

Substituting the given values:

f(4) - (-3) = f'(c)(4)

f(4) + 3 = 4f'(c)

Since f'(x) ≤ 8 for all values of x, we can say that f'(c) ≤ 8. Therefore:

f(4) + 3 ≤ 4f'(c) ≤ 4(8) = 32

Therefore, we have:

f(4) ≤ 32 - 3 = 29

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Answer:

Number of $ 8 priced tickets = 210

Number of $10 priced tickets = 140

Number of $ 12 priced tickets = 70

Step-by-step explanation:

Framing and solving equations with three variables:

Let the number of $ 8 priced tickets = x

Let the number of $10 priced tickets = y

Let the number of $ 12 priced tickets = z

  Total number of tickets = 420

                 x +  y + z = 420           --------------(i)

         Total income = $ 3920

        8x + 10y + 12z = 3920      ----------------(ii)

Combined number of $8 and $10 priced tickets= 5 * the number of $12 priced tickets

                      x + y  = 5z

                x + y - 5z = 0         -------------------(iii)

(i)        x + y + z = 420

(iii)      x + y - 5z = 0

       -     -     +      +   {Subtract (iii) from (i)}

                    6z = 420

                      z = 420÷ 6

                     \(\sf \boxed{\bf z = 70}\)

(ii)            8x + 10y + 12z = 3920

(iii)*8       8x + 8y - 40z   = 0  

             -       -     +            -           {Now subtract}

                     2y  + 52z = 3920   -----------------(iv)

Substitute z = 70 in the above equation and we will get the value of 'y',

                 2y + 52*70 = 3920

                2y + 3640   = 3920

                               2y = 3920 - 3640

                               2y = 280

                                 y = 280 ÷ 2

                                 \(\sf \boxed{\bf y = 140}\)

substitute z = 70 & y = 140 in equation (i) and we can get the value of 'x',

         x +  140 + 70 = 420

                  x + 210 = 420

                          x  = 420 - 210

                          \(\sf \boxed{x = 210}\)

Number of $ 8 priced tickets = 210

Number of $10 priced tickets = 140

Number of $ 12 priced tickets = 70

Answer:

0.56

it's basically the number closest to 50. Don't get tricked by the 0.05 because that's only 5% not 50%

a) 2.7% of mayflies live at least 26.8 hours.

b) 85% of the mayflies die after approximately 26.2 hours.

a) We can begin by standardizing the value of 26.8 hours:

\(z = \frac{26.8 - 23.7}{1.6} = 1.9375\)

Using a standard normal table or a calculator, we can find that the probability of a standard normal random variable being greater than 1.9375 is approximately 0.027, or 2.7%. Therefore, about 2.7% of mayflies live at least 26.8 hours.

b) We want to find the value of x such that 85% of the mayflies have a lifespan less than x. To do this, we need to find the z-score corresponding to the 85th percentile of the standard normal distribution:

\(z = \text{invNorm}(0.85) \approx 1.04\)

Then we can solve for x:

\(x = \mu + z\sigma = 23.7 + 1.04(1.6) \approx 26.2\)

Therefore, 85% of the mayflies die after approximately 26.2 hours.

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Answer:

The center:(20,0.05)

Radius: 9 units

Step-by-step explanation:

Rewrite the equation- (x-20)^2+(y-0.05)^2=81

(x-20)^2+(y-0.05)^2=9^2

Answer:

\(\displaystyle [20, \frac{1}{20}]\)

Explanation:

In a circle equation of \(\displaystyle [x - h]^2 + [y - k]^2 = r^2,\)the centre of the circle is represented by \(\displaystyle [h, k],\)hence, you have your answer.

I am joyous to assist you at any time.

Approximately 4.174 grams of ammonium phosphate ((NH₄)₃PO₄) will be produced by the reaction of 2.8 grams of phosphoric acid (H₃PO₄).

The mole idea is a useful way to indicate how much of a substance there is. Any measurement can be divided into two components: the magnitude in numbers and the units in which the magnitude is expressed.

To determine the mass of ammonium phosphate produced by the reaction of 2.8g of phosphoric acid (H₃PO₄), we need to consider the balanced chemical equation and the molar masses of the compounds involved.

The balanced chemical equation for the reaction is as follows:

H₃PO₄ + 3NH₃ -> (NH₄)₃PO₄

From the balanced equation, we can see that one mole of phosphoric acid (H₃PO₄) reacts with three moles of ammonia (NH₃) to produce one mole of ammonium phosphate ((NH₄)₃PO₄).

Step 1: Calculate the molar mass of H₃PO₄:

H = 1.00794 g/mol (1 hydrogen atom)

P = 30.97376 g/mol (1 phosphorus atom)

O = 15.999 g/mol (4 oxygen atoms)

Molar mass of H3PO4 = (1.00794 * 3) + 30.97376 + (15.999 * 4) = 97.995 g/mol

Step 2: Determine the number of moles of H₃PO₄:

Number of moles = mass / molar mass

Number of moles = 2.8g / 97.995 g/mol ≈ 0.028 moles

Step 3: Use stoichiometry to find the number of moles of ammonium phosphate:

From the balanced equation, we know that the ratio of moles of H₃PO₄ to moles of (NH₄)₃PO₄ is 1:1.

Therefore, the number of moles of (NH₄)₃PO₄ produced is also approximately 0.028 moles.

Step 4: Calculate the mass of (NH₄)₃PO₄:

Molar mass of (NH₄)₃PO₄:

N = 14.0067 g/mol (3 nitrogen atoms)

H = 1.00794 g/mol (12 hydrogen atoms)

P = 30.97376 g/mol (1 phosphorus atom)

O = 15.999 g/mol (4 oxygen atoms)

Molar mass of (NH₄)₃PO₄ = (14.0067 * 3) + (1.00794 * 12) + 30.97376 + (15.999 * 4) = 149.086 g/mol

Mass of (NH₄)₃PO₄ = number of moles * molar mass

Mass of (NH₄)₃PO₄ = 0.028 moles * 149.086 g/mol ≈ 4.174 g

Therefore, approximately 4.174 grams of ammonium phosphate ((NH₄)₃PO₄) will be produced by the reaction of 2.8 grams of phosphoric acid (H₃PO₄).

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Answer:

A because 11 +12 is 23 and A is the closest

An ice cream shop has 10 flavors and one can choose 4 different flavors. The question asks for the total number of possible flavor combinations.Therefore, we need to find the number of ways in which 4 flavors can be chosen from 10 flavors.

In such cases where order does not matter and repetitions are not allowed, we can use the formula for combinations which is as follows:C(n, r) = n! / (r! (n - r)!)Where n is the total number of items, r is the number of items being chosen at a time and ! represents the factorial function.

Using this formula we can find the total number of possible flavor combinations. Substituting the values in the above formula, we get:C(10, 4) = 10! / (4! (10 - 4)!)C(10, 4) = (10 * 9 * 8 * 7) / (4 * 3 * 2 * 1)C(10, 4) = 210Hence, there are 210 possible flavor combinations when one can choose 4 different flavors

.Explanation:The formula to be used for this type of question is combination. Combination is the method of selecting objects from a set, typically without replacement (without putting the same item back into the set) and where order does not matter. The formula for combination is given by C(n,r)=n!/(r!(n-r)!).

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The rate of change for the equation y - x = 10 is 1.

To find the rate of change for the equation y - x = 10, we need to determine how y changes with respect to x.

We can rewrite the equation as y = x + 10 by adding x to both sides.

Now, we can observe that the coefficient of x is 1. This means that for every unit increase in x, y will increase by 1. Therefore, the rate of change for this equation is 1.

In other words, as x increases by 1 unit, y will increase by 1 unit as well.

As a result, 1 represents the rate of change for the equation y - x = 10.

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Answer:

The price of a child ticket in dollars $8.00

Step-by-step explanation:

In mathematics, linear programming is a technique for maximizing operations under certain restrictions.

Using the mathematical modeling technique of linear programming, a linear function is maximized or minimized depending on the restrictions it is subjected to. This method has proved helpful for directing quantitative judgments in business planning, industrial engineering, and—to a lesser extent—in the social and physical sciences.

In mathematics, linear programming is a technique for maximizing operations under certain restrictions. Maximizing or minimizing the numerical value is the primary goal of linear programming. It comprises of linear functions that are subject to restrictions in the form of inequalities or linear equations.

Therefore, the correct answer is option A. this is a binding constraint, so there is no slack or surplus.

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Using the cosine rule, the distance the plane has flown during Jack's phone call can be calculated by taking the square root of the sum of the squares of the initial and final distances, minus twice their product, multiplied by the cosine of the angle difference.

To determine the distance the plane has flown during Jack's phone call, we can use the cosine rule in trigonometry.

The cosine rule relates the lengths of the sides of a triangle to the cosine of one of its angles.

Let's denote the initial distance from Jack to the plane as d1 and the final distance as d2.

We know that the altitude of the plane remains constant at 2400 meters.

According to the cosine rule:

\(d^2 = a^2 + b^2 - 2ab \times cos(C)\)

Where d is the side opposite to the angle C, and a and b are the other two sides of the triangle.

For the initial angle of elevation (70°), we have the equation:

\(d1^2 = (2400)^2 + a^2 - 2 \times 2400 \times a \timescos(70)\)

Similarly, for the final angle of elevation (50°), we have:

\(d2^2 = (2400)^2 + a^2 - 2 \times 2400 \times a \times cos(50)\)

To find the distance the plane has flown, we subtract the two equations:

\(d2^2 - d1^2 = 2 \times 2400 \times a \times (cos(70) - cos(50))\)

Now we can solve this equation to find the value of a, which represents the distance the plane has flown.

Finally, we calculate the square root of \(a^2\) to find the distance in meters.

It's important to note that the angle of elevation assumes a straight-line path for the plane's movement and does not account for any changes in altitude or course adjustments that might occur during the phone call.

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One problem with the arithmetic mean is that it is influenced by outliers. Because with the presence of outliers , the arithmetic mean will be pulled towards the outlier. So, the correct option is A) it is influenced by outliers.

The arithmetic mean is calculated by summing up all the observations in a dataset and dividing by the number of observations. While it is a commonly used measure of central tendency, it has some limitations. One of the main problems with the arithmetic mean is that it can be strongly influenced by outliers.

An outlier is an observation that is very different from the other observations in the dataset. When outliers are present, the arithmetic mean can be pulled towards the outlier and may not be a good representation of the typical value in the dataset.  So, the answer is A) it is influenced by outliers.

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Answer:

a is a rational number

Step-by-step explanation:

A number that can be expressed in the form p/q where p and q are integers and q is not = 0

Above is the definition of rational number.

So, a is a rational number

Strings represented by regular expressions are sequences of characters that match the specified pattern defined by the regular expression. Regular expressions are a powerful tool for pattern matching and string manipulation. They consist of a combination of characters and special symbols that define a pattern to be matched against a string.

The regular expression -?[0-9] (\(\*10^2\))?[1-9]* [a-z] can represent the following strings:

- "5": A single-digit positive number.

- "-42": A negative two-digit number.

- "10": A positive two-digit number.

- "\(7*10^3\)": A number in scientific notation, representing 7 multiplied by 10 raised to the power of 3.

- "-9": A negative single-digit number.

- "123": A three-digit number.

- "a": A lowercase letter "a".

- "x": Any lowercase letter from "a" to "z".

- "12x": A two-digit number followed by a lowercase letter.

- "\(-8*10^2x\)": A negative two-digit number in scientific notation followed by a lowercase letter.

The regular expression ([a-z] |\.\.\.) can represent the following strings:

- "a": A lowercase letter "a".

- "x": Any lowercase letter from "a" to "z".

- "...": An ellipsis representing a sequence or omission of characters.

- "b...z": A lowercase letter "b" followed by any number of characters represented by an ellipsis until lowercase letter "z".

- "cde": A three-letter lowercase string.

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Therefore, the interest on a two-month, 7%, $1,000 note would be calculated at $140. The statement is false. Interest on a two-month, 7%, $1,000 note would be calculated as $1,000  0.07  (2/12), as you need to convert the two months to a fraction of a year (12 months) for the interest calculation.

To calculate the interest on a note, you need to know the principal amount, the interest rate, and the time period for which the interest is being calculated. In this case, the principal amount is $1,000, the interest rate is 7%, and the time period is 2 months.

The formula for calculating simple interest is:
I = P × r × t
Where:
I = interest
P = principal amount
r = Interest rate
t = Time period
Using the given values, we can plug them into the formula:
I = $1,000 × 0.07 × 2
I = $140
Therefore, the interest on a two-month, 7%, $1,000 note would be calculated at $140.
False. Interest on a two-month, 7%, $1,000 note would be calculated as $1,000  0.07  (2/12), as you need to convert the two months to a fraction of a year (12 months) for the interest calculation.

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Answer:

3 times 7 = 21

Step-by-step explanation:

Answer:

3x-21

Step-by-step explanation:

times means multiply and a number means a variable, and difference means subtract

Step-by-step explanation:

the volume of a cylinder is as for any other regular 3D object :

ground area ×height

the ground area of a cylinder is a circle, so it is

pi×radius² × height

the radius is always half of the diameter (of the diameter is airways twice the radius).

radius = 6/2 = 3 ft.

the volume is then

pi × 3² × 9 = pi × 9 × 9 = pi × 81 ft³

so, the answer is 81pi ft³.