13. A Commercial bank buys and sells foreign exchange using the rates shown below; IUS$ Buying rate Kshs.83.25 selling rate Kshs.84.05 An American tourist arrived in the country, with Us$8175 and exchanged 80% of the cash to local currency. While in country he spend kshs.443,595 and bought USA dollar ($) with the remaining amount. Determine the USA dollars he had as he left the country. (4 marks)​

Answer:

No solution to any of the variables or equation

Step-by-step explanation:

Answer: [tex](x+4)^2 + (y+2)^2 = 9[/tex]

Step-by-step explanation:

The general form for the equation of a circle is:

[tex](x-h)^2 + (y-k)^2 = r^2[/tex], where (h,k) is the center, and r is the radius:

We see the center to be at the point (-4,-2). and the radius can also be seen to be 3 units:

with this in mind:

[tex](x-(-4))^2 +(y-(-2))^2 = 3^2[/tex]

[tex](x+4)^2 + (y+2)^2 = 9[/tex]

you can select from the dropdowns accordingly.

Answer:

a. There are 720 different ways to arrange the bands. This can be calculated as 6! (6 factorial), which equals 6 x 5 x 4 x 3 x 2 x 1 = 720.

b. We can simplify the problem by treating bands 3 and 5 as a single entity that must be placed at the beginning and end of the lineup, respectively. That leaves four remaining bands, which can be arranged in 4! = 24 different ways. Therefore, there are 24 different ways to arrange the bands if band 3 is performing first and band 5 last.

The number of ways to arrange 6 bands is 720 (calculated as 6!). If the first and last bands are predetermined, the number of ways to arrange the remaining 4 bands is 24 (calculated as 4!).

This question pertains to the concept of permutations, a topic in Mathematics. In part a, with 6 bands to arrange in different ways, we are wanting to find the number of permutations of 6 items, which is calculated as 6 factorial (notated as 6!), which equals 720. Therefore, there are 720 different ways to arrange the 6 bands.

For part b, if band 3 must play first and band 5 must play last, we only need to find the distinct orderings of the remaining 4 bands, which is 4 factorial (notated as 4!). This equals 24. Consequently, while imposing these restrictions, there are 24 different ways to arrange the bands.

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taking a peek at the quadratic graph, we can see it has a vertex at (-2 , 2) and it has a couple of points, hmmm we only need one, say we'll use (-3 , -1)

[tex]~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{a~is~negative}{op ens~\cap}\qquad \stackrel{a~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} h=-2\\ k=2\\ \end{cases}\implies y=a(~~x-(-2)~~)^2 + 2\hspace{4em}\textit{we also know that} \begin{cases} x=-3\\ y=-1 \end{cases}[/tex]

[tex]-1=a(-3-(-2))^2+2\implies -1=a(-1)^2 + 2\implies -3=a \\\\[-0.35em] ~\dotfill\\\\ y=-3(~~x-(-2)~~)^2 + 2\implies y=-3(x+2)^2 +2 \\\\\\ y=-3(x^2+4x+4)+2\implies y=-3x^2-12x-12+2 \\\\\\ ~\hfill {\Large \begin{array}{llll} y=-3x^2-12x-10 \end{array}}~\hfill[/tex]

Check the picture below.

Hence, the probability of choosing 8 numbers that match 8 randomly selected balls when the balls are numbered 1 through 33 is given by (1/33)^8 x C(33,8) which is approximately equal to 0.000000206.

The probability of choosing 8 numbers that match 8 randomly selected balls when the balls are numbered 1 through 33 can be calculated using the formula for combination. There are a total of 33 balls and we need to choose 8 out of them. The total number of possible combinations of 8 balls out of 33 is given by C(33,8) which is equal to 69,090,840. Now, if we assume that all the balls are equally likely to be selected, then the probability of selecting a particular ball is 1/33. Therefore, the probability of choosing 8 specific balls out of 33 is (1/33)^8. Hence, the probability of choosing 8 numbers that match 8 randomly selected balls when the balls are numbered 1 through 33 is given by (1/33)^8 x C(33,8) which is approximately equal to 0.000000206. In other words, the probability of this event occurring is very low, which means it is very unlikely to happen.

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The length of the curve for t∈[0,1] is 4/9. To find the length of the curve defined by x(t)=[tex]2t^3[/tex] and y(t)=[tex]4t^2[/tex]+2, we need to use the arc length formula:

L = ∫√[tex](dx/dt)^2 + (dy/dt)^2[/tex] dt from t=0 to t=1.
First, let's find dx/dt and dy/dt:
dx/dt = [tex]6t^2[/tex]
dy/dt = 8t
Now we can plug these into the arc length formula:
L = ∫√[tex](6t^2)^2[/tex]+ [tex](8t)^2[/tex] dt from t=0 to t=1
L = ∫√([tex]36t^4 + 64t^2[/tex]) dt from t=0 to t=1
L = ∫√([tex]4t^2(9t^2 + 16)[/tex]) dt from t=0 to t=1
L = 2∫√([tex]9t^2[/tex] + 16) dt from t=0 to t=1
To integrate this expression, we can use a trig substitution. Let u = (3/4)[tex]t^2[/tex] and du = (3/2)t dt. Then:
L = 2∫√(9(4/3)u + 16) (2/3) du from u=0 to u=3/4
L = (4/3)∫√(12u + 48) du from u=0 to u=3/4
L = (4/3)∫√(12(u + 4)) du from u=0 to u=3/4
L = (4/3)∫2√(u + 4) du from u=0 to u=3/4
L = (8/3)[(2/3)[tex](u + 4)^{(3/2)}[/tex]] from u=0 to u=3/4
L = (8/3)[(2/3)[tex](3/4 + 4)^{(3/2)}[/tex] - [tex](2/3)(4)^{(3/2)}[/tex]]
L = (8/3)[(2/3)[tex](25/4)^{(3/2)}[/tex] - (2/3)(8)]
L = (8/3)[(25√25)/6 - 16/3]
L = (8/3)(25/6 - 16/3)
L = (8/3)(1/6)
L = 4/9

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The length of /BD/ in the similar shapes shown is 3.6.

Similar shapes are enlargements of each other using a scale factor.

Note: All the corresponding angles in the similar shapes are equal and the corresponding lengths are in the same ratio.

To calculate the length of BD, we use the formula below.

Note: ΔDAC is similar to ΔBAD

Formula:

From the question,

Given:

Substitute these values into equation 1 and solve for /BD/

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when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one.  Check the picture below.

[tex]\cfrac{24}{y}=\cfrac{y}{30}\implies 720=y^2\implies \sqrt{720}=y\implies 12\sqrt{5}=y\implies 26.83\approx y[/tex]

The expression can be simplified as:

-9x² +  6x

An algebraic expression is an expression that is made up of variables and constants, along with algebraic operations like addition, subtraction, square root, etc.

The expression can be simplified by adding or subtracting like terms. That is:

3x³ + 9x² + 30x -3x³-18x² - 24x =  3x³-3x³ + 9x²-18x² + 30x -24x

                                                   = -9x² +  6x

Substituting x = -4, -2, 0 into -9x² +  6x:

x = -4:

-9x² +  6x = -9(-4)² +  6(4)

                = -144 + 24

                = -120

x = -2:

-9x² +  6x = -9(-2)² +  6(2)

                = -36 + 12

                = -24

x = 0:

-9x² +  6x = -9(0)² +  6(0)

                = 0

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The price that maximizes profit in this submarket is $10. (e) The firm's total economic profit can be found by subtracting total cost.

The total revenue schedule for the first submarket can be obtained by multiplying the price and quantity demanded in each row. The results are entered in the third column of the table below:

Quantity Price Total Revenue

0 20 0

1 19 19

2 18 36

3 17 51

4 16 64

5 15 75

The marginal revenue schedule can be obtained by calculating the change in total revenue when one more unit is sold. The results are entered in the fourth column of the table below:

Quantity Price Total Revenue Marginal Revenue

0 20 0 -

1 19 19 19

2 18 36 17

3 17 51 15

4 16 64 13

5 15 75 11

b. To maximize profit, the firm should produce where marginal cost equals marginal revenue.

Since marginal cost is constant and equal to $8, the profit-maximizing output level is where marginal revenue equals $8, which is at a quantity of 3. Therefore, the price that maximizes profit in this submarket is $17.

c. The demand schedule for the second submarket is given by the first two columns of the table below:

Quantity Price

0 12

1 11

2 10

3 9

4 8

5 7

d. The total revenue schedule and marginal revenue schedule for the second submarket can be obtained in the same way as in part a. The results are entered in the third and fourth columns of the table below:

Quantity Price Total Revenue Marginal Revenue

0 12 0 -

1 11 11 11

2 10 20 9

3 9 27 7

4 8 32 5

5 7 35 3

To maximize profit, the firm should produce where marginal cost equals marginal revenue.

Since marginal cost is constant and equal to $8, the profit-maximizing output level is where marginal revenue equals $8, which is at a quantity of 2. Therefore, the price that maximizes profit in this submarket is $10. e. The firm's total economic profit can be found by subtracting total cost

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The situation that describes exponential decay is (a) The value of a piece of machinery decreases by 19% every year.

What is the exponential function?

An exponential function is a mathematical function of the form:

f(x) = aˣ

where "a" is a constant called the base, and "x" is a variable. Exponential functions can be defined for any base "a", but the most common base is the mathematical constant "e" (approximately 2.71828), known as the natural exponential function.

Exponential decay is a mathematical term used to describe the process of decay that happens at an exponential rate.

In this case, the value of the machinery decreases by a percentage every year.

Since the percentage decrease is constant over time, this is an example of exponential decay.

On the other hand, option (b) describes a linear decrease in value since the value decreases by a constant amount of $5000 every year.

Hence, the situation that describes exponential decay is (a) The value of a piece of machinery decreases by 19% every year.

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C. If the conditional proposition p is a contingency, it means that there are some truth values of p that make the proposition true and others that make it false. To determine whether -p is also a contingency, we need to consider the truth values of -p for all possible truth values of p.

if we negate a contingency, there will still be some truth values that make the negation true and others that make it false. Therefore, at least one entry in the truth table for p will be T and at least one entry will be F. This means that -p is also a contingency.

if the conditional proposition p is a contingency, then -p is also a contingency because there will be some truth values of p that make the negation true and others that make it false. The correct answer to the question is C.

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The source of bias most relevant to this situation is "perceived lack of anonymity."

When both members of a couple are asked to indicate if they have remained monogamous in their current relationship, they may be hesitant to answer truthfully due to concerns about their privacy or potential repercussions. They might feel that their responses could be traced back to them, which could lead to negative consequences in their relationship. This fear of not being anonymous can result in participants providing inaccurate or dishonest responses.

In a study asking couples about their monogamy, the most relevant source of bias is perceived lack of anonymity, as it may affect the accuracy and honesty of participants' responses.

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Answer: 1% off

Step-by-step explanation:

541 is about 99% of 454, leaving 1% discount

The most appropriate phrase that summarizes the most important aspect of survey design is option c. keep it simple.

Survey design requires careful consideration of various factors.

Such as the target population, the research objectives, the types of questions, and the mode of data collection.

However, the fundamental principle of survey design is to keep the survey simple and straightforward.

The survey should be easy to understand, answer, and navigate, ensuring that participants can complete it with ease and accuracy.

When designing a survey, it is essential to prioritize simplicity over complexity.

A survey that is too complicated or difficult to complete can discourage participation, lead to inaccurate responses, and result in biased data.

Therefore, survey designers should aim to create clear, concise, and unambiguous questions that are easy to comprehend and answer.

Survey design should prioritize simplicity, ensuring that the questions are easy to understand, answer, and navigate.

And the survey is straightforward and concise.

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The Law of Sines and the Law of Cosines are essential mathematical tools in trigonometry that play a significant role in solving triangles and analyzing their properties.

The Law of Sines and the Law of Cosines enable us to solve triangles when we have limited information about their angles and sides. They provide formulas that relate the lengths of the sides of a triangle to the measures of its angles, or vice versa.

The Law of Sines is particularly important when dealing with the ambiguous case of solving triangles. This occurs when we have information about an angle, its opposite side, and one other side.

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The standard deviation for this probability distribution is 0.79. The standard deviation is a measure of the variability or spread of a probability distribution. It tells us how far the data is from the mean or expected value.

To calculate the standard deviation, need to calculate the expected value or mean of the distribution, which is given by:

E(x) = Σ(x * p(x))

where x is the possible number of defective computers and p(x) is the probability of x defective computers.

E(x) = (00.533333) + (10.233333) + (20.233333) + (30) = 0.7

Next, calculate the variance using the formula:

Var(x) = Σ[(x-E(x))^2 * p(x)]

Var(x) = (0-0.7)^2 * 0.533333 + (1-0.7)^2 * 0.233333 + (2-0.7)^2 * 0.233333 + (3-0.7)^2 * 0 = 0.49

Finally, the standard deviation is the square root of the variance:

SD = sqrt(Var(x)) = sqrt(0.49) = 0.7

Therefore, the standard deviation for this probability distribution is 0.79 when rounded to the nearest hundredth.

In summary, the standard deviation is a measure of the variability or spread of a probability distribution. It tells us how far the data is from the mean or expected value. To calculate the standard deviation, we need to first find the expected value, then the variance, and finally take the square root of the variance. In this problem, we used the given probabilities to calculate the expected value and variance and then found the standard deviation as 0.79.

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The 70th percentile of X is approximately 100.73.
P(X > 97)=0.9838
P(99 < X < 102)=0.7841


a. Using the Central Limit Theorem, we can assume that the sample mean follows a normal distribution with mean 100 and standard deviation 10/sqrt(50) = 1.41. Therefore,

P(99 < X < 102) = P((99 - 100)/(1.41) < (X - 100)/(1.41) < (102 - 100)/(1.41))

= P(-0.71 < Z < 1.41)

= 0.7841 (using standard normal table or calculator)

b. Using the same reasoning as in part (a),

P(X > 97) = P((X - 100)/(1.41) > (97 - 100)/(1.41))

= P(Z > -2.12)

= 0.9838 (using standard normal table or calculator)

c. To find the 70th percentile of X, we need to find the value x such that P(X < x) = 0.70. Using the same normal distribution with mean 100 and standard deviation 10/sqrt(50) = 1.41, we can find the z-score that corresponds to the 70th percentile:

P(Z < z) = 0.70 => z = 0.52

Then, using the formula (x - 100)/(1.41) = z, we can solve for x:

x = 100 + 0.52(1.41) = 100.73

Therefore, the 70th percentile of X is approximately 100.73.

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Aaron is responsible for paying the sum of $10,700 for his surgery.

Aaron's deductible = $5,500. Thus means he is responsible for paying first $5,500 of his medical bills.

Coinsurance = 80%. Insurance cover 80% of remaining cost and he is responsible for 20%.

Aaron's out-of-pocket maximum is computed as follows

= Surgery cost - Deductible

= $12,000 - $5,500

= $6,500

Amount payable * Coinsurance

= $6,500 x 0.8

= $5,200

So, Aaron's insurance will cover the remaining $19,800 of his $25,000 surgery.

So, he is responsible for paying:

= $5,500 (deductible) + $5,200 (out-of-pocket maximum)

= $10,700

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The expression that is equivalent to 135−−−√5–√ is: 131.764.

An equivalent expression is one that has the same value as another. To evaluate the given expression, the three minus signs all equate to -. So, the question is asking that we subtract the root of 5 from 135.

Also, the root of minus 1 will be subtracted from the answer that we arrive at.

135−−−√5 = 132.764

132.764 - √1 = 131.764

So, the decimal equivalent of this expression is 131.764.

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After considering all the given data we conclude that the current measured temperature in degree Fahrenheit is 91°F, under the condition that the midday temperature in Palm Beach was 86 °F and the given expression is 86 -|-2-3| which represents current temperature.

To evaluate the temperature let us first consider the expression 86 -|-2-3| which represents the current temperature after 3 hours of temperature change of 2°F per hour from an initial temperature of 86°F.

The given expression can be again simplified as

86 -|-2-3| = 86 -|-5|

= 86 - (-5)

= 91°F

Hence, after evaluating we finally measured the current temperature as 91°F.

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Answer:

90 minutes

Step-by-step explanation:

it will take twice as long therefore 90 minutes

The function f(x) = (x - 9)(x + 9)x is an odd function.

Given the function in the question:

f(x) = (x - 9)(x + 9)x

To determine whether the function f(x) = (x - 9)(x + 9)x is even, odd, or neither, we need to check if it satisfies the conditions for even or odd functions.

An even function is symmetric with respect to the y-axis, meaning f(x) = f(-x) for all x in the domain.

An odd function is symmetric with respect to the origin, meaning f(-x) = -f(x) for all x in the domain.

Let's analyze the given function:

f(x) = (x - 9)(x + 9)x

f(x) = x³ - 81x

To check if it's even, we substitute -x for x:

f(x) = x³ - 81x

f(-x) = -x³ + 81x

Since -x³ + 81x is not equal to x³ - 81x, the function is not even.

To check if it's odd, find -f(x):

f(x) = x³ - 81x

-f(x) = -( x³ - 81x )

-f(x) = -x³ + 81x

Since  -x³ + 81x equals -x³ + 81x, the function is odd.

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A dot plot can be created by drawing a number line and then adding one dot per value, the first statement is true but the second one is not.

The basic steps to draw this type of graph is:

Now, let's interpret the information:

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Answer:

B. 25 m²

Step-by-step explanation:

área del trapecio= A= a+b/2 ×h

a=4, b= 6 and h=5

A=4+6/2×5

A= 10/2×5

A= 5×5

A=25 m²

The statement "The initial temperature inside the oven was 78 degrees" is true of the equation (option 3)

The equation T = 0.63s + 78 shows that the initial temperature inside the oven is 78 degrees. The temperature inside the oven increases by 0.63 degrees every second. So, after one minute (60 seconds), the temperature inside the oven would be 141 degrees. However, this is not stated in the equation.

Therefore the third statement if true of the equation (The initial temperature inside the oven was 78 degrees" is true of the equation)

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Complete question:

The equation T = 0.63s + 78 can be used to determine the temperature in degrees, inside an oven s seconds after the oven is turned on. Which statement relative to this equation is true?

1. The temperature inside the oven increased by 78 degrees every 63 seconds.

2. The temperature inside the oven in one minute was 141 degrees

3. The initial temperature inside the oven was 78 degrees.

The equilibrium wage rate is $6 per hour. This is found by observing the point where the labor demanded and labor supplied curves intersect, which is at a wage rate of $6 and a quantity of labor of 35.

In a competitive labor market, the equilibrium wage is the wage rate at which the quantity of labor demanded equals the quantity of labor supplied. In other words, it is the wage rate that clears the labor market.

To find the equilibrium wage in this problem, we need to compare the labor demanded and the labor supplied at each wage rate. We can see from the table that at a wage rate of $3 per hour, the labor demanded is 50 and the labor supplied is only 20.

This means that the quantity of labor demanded exceeds the quantity of labor supplied, and there will be upward pressure on the wage rate. As the wage rate increases, the quantity of labor demanded decreases and the quantity of labor supplied increases.

From the table, we can see that at a wage rate of $6 per hour, the quantity of labor demanded (35) equals the quantity of labor supplied (50), which is the equilibrium condition. Therefore, the equilibrium wage is $6 per hour.

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--The given question is incomplete, the complete question is given below " Assume that the following data describe labor-market conditions:

Wage rate (per hour) $3 $4 $5 $6 $7 $8 $9 $10

Labor demanded 50 45 40 35 30 25 20 15

Labor supplied 20 30 40 50 60 70 80 90

Find the equilibrium wage.

Instructions: Enter your response as a whole number."--

The sentiment score for the review on forest.com would depend on the specific algorithm and weighting system used for the sentiment analysis.

However, a basic calculation could be done by assigning a numerical value to each positive and negative word (e.g. +1 for positive, -1 for negative) and adding them up. In this case, the sentiment score would be +1 (3 positive words) -2 (2 negative words) = -1. However, it's important to note that sentiment analysis is not always straightforward and can be influenced by factors such as context, sarcasm, and language nuances.

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Using the normal vector of the parallel plane <7, -1, -1>. By Substituting the given points (9, -9, -6) in the plane equation and got the new plane equation: 7x - y - z = 69.

To find an equation of the plane passing through a given point and parallel to another plane, we need to use the normal vector of the parallel plane and substitute the given point in the equation of the plane.

A plane is defined by a point and a normal vector perpendicular to it. Therefore, to find an equation of the plane passing through the point (9, −9, −6), we need to determine its normal vector.

The given plane 7x − y − z = 1 can be written in the form Ax + By + Cz = D, where A = 7, B = -1, C = -1 and D = 1. The coefficients of x, y, and z in this equation give the components of the normal vector to the plane. Thus, the normal vector is N = (7, -1, -1).

Since the plane we want to find is parallel to the given plane, it has the same normal vector. Therefore, we can write its equation as 7x - y - z = D, where D is a constant. To determine D, we substitute the coordinates of the given point into the equation:

7(9) - (-9) - (-6) = 69

Thus, the equation of the plane passing through the point (9, −9, −6) and parallel to the plane 7x − y − z = 1 is 7x - y - z = 69.

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the coordinates of point S are (6, -18).To find the coordinates of points S and T, we need to use the midpoint formula.

Given that the midpoint of ST is (3, -6) and the coordinate of point T is (0, 6), we can calculate the coordinates of point S.

The midpoint formula states that the coordinates of the midpoint (M) of two points (P and Q) can be found using the following formula:

M = ((Px + Qx) / 2, (Py + Qy) / 2)

Let's substitute the given values into the formula:

(3, -6) = ((0 + Sx) / 2, (6 + Sy) / 2)

Simplifying the equation, we have:

3 = (0 + Sx) / 2    and    -6 = (6 + Sy) / 2

Multiplying both sides by 2, we get:

6 = 0 + Sx    and    -12 = 6 + Sy

Solving for Sx and Sy, we find:

Sx = 6    and    Sy = -18

Therefore, thethe coordinates of point S are (6, -18).

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