A use case description documents (among other things) ____.
A. a description of alternative courses of action
B. post conditions
C. preconditions
D. assumptions

The towns Alphaville and Betaville are 2.067 km apart.

Let's d = distance between Alphaville and Betaville

Since the cyclist is traveling at a constant speed of 14 km/h, we can use the formula:

distance = speed x time

Let x =  time it takes for the cyclist to travel from Alphaville to the point where she passes the jogger.

Then, the time it takes for the walker to travel from Betaville to the point where she is passed by the cyclist is (x + 4/60) hours (since 4 minutes is 4/60 hours).

Finally, we can use the formula:

distance = speed x time

to set up two equations, one for the cyclist and jogger, and one for the cyclist and walker:

14x = 10(x + 4/60) ------- (1)

14x - 6(x + 4/60) = d ---- (2)

Simplifying Equation 1:

14x = 10(x + 4/60)

14x = 10x + 2/3

4x = 2/3

x = 1/6.

Substituting x = 1/6 into Equation 2:

14(1/6) - 6(1/6 + 4/60) = d

7/3 - 2/5 = d

d = 31/15 km or approximately 2.067 km

Therefore, the towns Alphaville and Betaville are approximately 2.067 km apart.

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The rectangular prism with the specified length, width, and height has a surface area of 164 in².

A prism is a polyhedron in geometry that has n parallelogram faces that connect the n-sided polygon basis, the second base, which is a translated duplicate of the first base, and the n faces.

The bases are translated into all cross-sections that are parallel to them.

According to their intended use, prisms can be divided into four primary categories: dispersion prisms, deflection or reflection prisms, rotating prisms, and offset prisms.

So, simply said, a rectangular prism is a solid three-dimensional object having six rectangular faces.

The expression for a rectangular prism's surface area is:

S.A = 2( wl + hl + hw )

We enter the values provided into the expression above:

S.A = 2( wl + hl + hw )

S.A = 2( (3in × 10in) + (4in × 10in) + (4in × 3in) )

S.A = 2( 30in² + 40in² + 12in² )

S.A = 2( 82in² )

S.A = 164in²

Therefore, the rectangular prism with the specified length, width, and height has a surface area of 164 in².

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Correct question:

What is the surface area of the prism?

Justin made a total deposit of $1985.66.

A deposit is a sum of money that is added to an account or made available for use in a financial transaction. It can refer to money that is placed into a bank account, such as a savings or checking account, or to a payment made in advance for goods or services. Deposits are often required when b accounts, taking out loans, or making large purchases.

In the context of banking, deposits can earn interest, which can increase the amount of money in the account over time.

Let's start by adding up the bills:

Total amount of bills = 8 x 100 + 27 x 50 + 83 x 5 + 141 x 1

Total amount of bills = 800 + 1350 + 415 + 141

Total amount of bills = 1706

Next, let's add up the coins:

Total amount of coins = 13 x 0.25 + 117 x 0.05

Total amount of coins = 3.25 + 5.85

Total amount of coins = 9.10

Now, let's add up the checks:

Total amount of checks = 317.94 + 57.89 + 527.24 + 77.49

Total amount of checks = 980.56

Finally, let's add up the cash back:

Total amount of cash back = 30 x 20 + 11 x 10

Total amount of cash back = 600 + 110

Total amount of cash back = 710

To find the total deposit, we need to add up all the amounts:

Total deposit = Total amount of bills + Total amount of coins + Total amount of checks - Total amount of cash back

Total deposit = 1706 + 9.10 + 980.56 - 710

Total deposit = 1985.66

Therefore, Justin made a total deposit of $1985.66.

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A 2-column table titled Balloon Payment Mortgage has 7 rows. The first column has entries mortgage amount, term, interest rate, monthly payment, balloon payment, total interest, total payment. The second column has entries 170,000 dollars, 8 years, 4 percent, 811 dollars and 61 cents for 95 months, 143,152.99, 50,256, 220,256. By the end of year 8, Demarco and Tanya would have to pay a final payout of $143,152.

Hence, the correct option is C.

With the help of the given values, we know that the mortgage amount is $170,000 and the interest rate is 4%. The term of the loan is 8 years, which is equivalent to 96 months.

To calculate the monthly payment, we can use the following formula

P = (r * A) / (1 - (1 + r)^(-n))

Where P is the monthly payment, r is the monthly interest rate (which is 4% / 12 = 0.00333), A is the mortgage amount, and n is the total number of months (which is 96).

By putting the values, we get

P = (0.00333 * 170000) / (1 - (1 + 0.00333)^(-96))

P ≈ $811.61

Hence, the monthly payment is $811.61.

The total interest paid over the life of the loan can be calculated as the difference between the total payment and the mortgage amount.

Total interest = Total payment - Mortgage amount

Total interest = $220,256 - $170,000

Total interest = $50,256

Now, we can calculate the balloon payment using the formula

Balloon payment = A * (1 + r)^n - [P * ((1 + r)^n - 1) / r]

Where A is the mortgage amount, r is the monthly interest rate, P is the monthly payment, and n is the number of months until the balloon payment is due (which is 95 in this case).

By substituting the values, we get

Balloon payment = 170000 * (1 + 0.00333)^95 - [811.61 * ((1 + 0.00333)^95    - 1) / 0.00333]

Balloon payment ≈ $143,152.99

Hence, the correct option is C.

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Answer$143,152

Step-by-step explanation:

The measure of central tendency that will change the most in the data set is: Mean

The mean is defined as the average value of a distribution which is obtained by dividing the sum of the values by the frequency.

The median is defined as the number at the middle of the distribution. It is obtained by arranging the values in ascending order and picking the mid value.

The mode is defined as the value which has the most number of occurrences in the distribution.

The set of numbers can be arranged as:

25, 29, 32, 32, 52

The mean = 34

Mode = 32

Median = 32

If we replace 25 with 80, we will have:

Mean = 45

Mode = 32

Median = 32

Thus, the mean will change the most

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X is the adjacent side and is 50 inches long.

Using the trigonometric ratio of cosine:

cos(60 degrees) = adjacent / hypotenuse

cos(60 degrees) = 1/2 (cosine of 60 degrees is 1/2)

So, we can solve for the X, the adjacent:

adjacent = cos(60 degrees) x hypotenuse

adjacent = (1/2) x 100 inches

adjacent = 50 inches

Therefore, the length of the adjacent is 50 inches.

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A polygon with n sides is simply referred to as an n-gon.

A polygon with n sides is simply referred to as an n-gon. This naming convention allows for any polygon to be easily identified based on the number of sides it has, without the need for a specific name for every possible number of sides.

For example, a polygon with 3 sides is called a triangle, a polygon with 4 sides is called a quadrilateral, while a polygon with 5 sides is called a pentagon. However, for polygons with sides greater than 12, the names become less commonly used, and n-gon is often used instead as a general term to describe any polygon with n number of sides.

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A polygon with a number of sides, n, that does not have a special name is typically referred to as an "n-gon".

A polygon is a geometric object with two dimensions and a finite number of sides. A polygon's sides are made up of segments of straight lines that are joined end to end. As a result, a polygon's line segments are referred to as its sides or edges. Vertex or corners refer to the intersection of two line segments, where an angle is created. Having three sides makes a triangle a polygon. A circle is a plane figure as well, but it isn't regarded as a polygon because it's curved and lacks sides and angles. So, while all polygons are two-dimensional shapes, not all two-dimensional figures are polygons.

For example, a polygon with 5 sides would be called a pentagon, but a polygon with 7 sides would simply be called a heptagon or a 7-gon.

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If your friend in college decides to purchase textbooks using his credit card. The number of  year his credit card balance be $1360 is 8 years.

We can use the continuous compounding formula to solve this problem:

A = Pe^(rt)

where A is the ending balance, P is the initial balance, e is Euler's number (approximately 2.71828), r is the interest rate, and t is the time in years.

In this case, we want to solve for t when P = 500 and A = 1360. The interest rate is given as 12.5% compounded continuously, which means r = 0.125. Substituting these values into the formula, we get:

1360 = 500e^(0.125t)

Dividing both sides by 500, we get:

e^(0.125t) = 2.72

Taking the natural logarithm of both sides, we get:

0.125t = ln(2.72)

Solving for t, we get:

t = ln(2.72)/0.125 ≈ 8

Rounding to the nearest year, we get that it will take 8 years for the credit card balance to reach $1360 without making any payments.

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The difference between two observation concerning the values are  68% of observation lie in between 468 and 492 , then 95% of observation lie in 456 and 504.

The normal distribution is considered a continuous probability distribution that has a  different bell-shaped probability density function. Therefore, the mean of a normal distribution is the center of its symmetric bell-shaped curve.


Therefore it is given ,  a normal distribution with mean of  480 and standard deviation 12
Lower limit = Mean - Standard deviation = 480 - 12 = 468

Upper limit = Mean + Standard deviation = 480 + 12 = 492

Following the same procedure then the results to evaluate for 95%
The difference between two observation concerning the values are  68% of observation lie in between 468 and 492 , whereas 95% of observation lie in 456 and 504.

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Before proving that a shape is a rectangle or a rhombus, you must first prove that it is a parallelogram by showing that its opposite sides are parallel and then use specific properties to prove its rectangle or rhombus nature.

Before proving that a given shape is a rectangle or a rhombus, you must first prove that it is a parallelogram. A parallelogram is a quadrilateral with opposite sides parallel to each other. To prove that a shape is a parallelogram, you can show that its opposite sides are parallel by using the slope formula or by showing that the opposite sides have the same length and are parallel to each other.

Once you have established that a shape is a parallelogram, you can then proceed to prove whether it is also a rectangle or a rhombus. To prove that a shape is a rectangle, you must show that it is a parallelogram with four right angles. To prove that a shape is a rhombus, you must show that it is a parallelogram with four sides of equal length.

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To prove that a quadrilateral is a rectangle or a rhombus, you must first establish some key properties. For a rectangle, you need to prove that it has four right angles and opposite sides are parallel. For a rhombus, you must demonstrate that all four sides are of equal length and opposite sides are parallel.

Before proving that something is a rectangle or a rhombus, you must first prove that it is a parallelogram. This means showing that opposite sides are parallel and congruent in length. Once this is established, you can then prove additional properties to determine whether the shape is a rectangle (where all angles are 90 degrees) or a rhombus (where all sides are congruent).
To prove that a quadrilateral is a rectangle or a rhombus, you must first establish some key properties. For a rectangle, you need to prove that it has four right angles and opposite sides are parallel. For a rhombus, you must demonstrate that all four sides are of equal length and that opposite sides are parallel. Once these properties are verified, you can confidently classify the shape as a rectangle or a rhombus.

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The correct answer is: The IQR of 13 is the most accurate to use, since the data is skewed. (Option B).

The correct answer is: Together, Streetcar and Cable Car are the preferred transportation for 168 residents. (Option A).

The correct answer is: The IQR is the best measure of variability, and it equals 6.

1. Since the data is skewed, it is not appropriate to use the range as a measure of variability. The range is sensitive to extreme values and can be misleading in skewed data. The interquartile range (IQR) is a better measure of variability for skewed data since it is not affected by extreme values. Therefore, the charity should use the IQR of 13 as the measure of variability for this data.

2. From the circle graph, we can draw the following conclusion:

Together, Streetcar and Cable Car are the preferred transportation for 27% + 15% = 42% of the residents. 42% of 400 is 168 residents.

3. The line plot shows that the data is discrete and not continuous. Also, the data is not normally distributed and is skewed. Therefore, the range is not an appropriate measure of variability. The interquartile range (IQR) is a better measure of variability for skewed data. The IQR is the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of the data.

From the plot, we can see that Q1 is 2 and Q3 is 8. Therefore, the IQR is 8 - 2 = 6.

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The mass of water vapor (g) / mass of dry air (kg) is the humidity measure of  the mixing ratio

The mixing ratio is defined as the mass of water vapor in grams divided by the mass of dry air in kilograms in a mixture of air and water vapor. It is a useful parameter for meteorologists and atmospheric scientists to describe the amount of water vapor in the atmosphere, particularly in the upper atmosphere where the relative humidity may be very low.

Relative humidity is the ratio of the partial pressure of water vapor in the air to the equilibrium vapor pressure at a given temperature and pressure, expressed as a percentage. Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. Absolute humidity is the mass of water vapor per unit volume of moist air.

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The yearly average inflation rate during that time is 3.75% (option d).

First, we need to adjust the value of $1 in 1860 to its equivalent value in 2018 using the given purchasing power ratio of 1:28.95. This means that $1 in 1860 is equivalent to $28.95 in 2018.

Next, we need to find the CPI for 1860 and 2018. According to the Bureau of Labor Statistics, the CPI for 1860 is not available. However, we can use the CPI for 1913 as a proxy, as it was the year when the CPI was first introduced. The CPI for 1913 was 9.9.

Using the CPI for 1913 as the beginning CPI and the CPI for 2018 as the ending CPI, we can calculate the inflation rate as follows:

Inflation rate = (252.146 - 9.9) / 9.9 x 100% = 3.72%

Hence the correct option D (3.75%).

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(a) Yes, we have enough information to compute Probability P(A or B).

(b) If we know P(A) and P(B), we have enough information to compute P(A or B).

(a) The probability of the union of two events (A or B) is given by the formula P(A or B) = P(A) + P(B) - P(A and B)

We know P(A) and P(B), but we don't know P(A and B) - the probability that both events occur simultaneously. Therefore, we cannot compute P(A or B) with certainty unless we are given additional information about the relationship between A and B.

(b) If we know that events A and B are mutually exclusive, then we have enough information to compute P(A or B). Mutually exclusive events are events that cannot occur simultaneously, which means that P(A and B) = 0.

In this case, the formula for the probability of the union simplifies to:

P(A or B) = P(A) + P(B)

Since we know P(A) and P(B), we can simply add them to obtain P(A or B). Therefore, in this case, we have enough information to compute P(A or B).

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These two events are independent. The action of Rafi downloading a song does not affect the probability of another customer in another city searching for a song on the same site.

The two events, Rafi downloading a song and a customer searching for a song, are independent because the occurrence of one event does not affect the probability of the other event occurring.

In other words, the actions of Rafi do not affect the actions of the customer in another city, and vice versa. The two events are unrelated and can occur simultaneously without affecting each other.

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Answer: no 3 is grade then -6 as 3 is positive number and 6 is negative number so positive is greater then negative number.

Step-by-step explanation:

In order to indicate if a number is greater than or less than another, we use the symbols > and <. For example, 10 is greater than 3, so we write it 10 > 3.

Applying the Angles of Intersecting Chords Theorem, the value of x in the circle is: x = 69 degrees.

The Angles of Intersecting Chords Theorem if two chords intersect inside a circle, then the size of the angle formed by the intersection is equal to half the sum of the sizes of the intercepted arcs, along with the size of its vertical angle.

Apply the theorem to find the value of x by creating the equation below:

x = 1/2 * (86 + 52)

x = 1/2 * (138)

x = 69 degrees.

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5. The value of x in the figure is

7. Length of arc AD is 125 degrees

8. Angle ROT is 36.87 degrees

The length of chord x is solved using Pythagoras theorem as follows

5.

let x/2 = y then we have

y² = 12² - 9 ² = 144 - 81 = 63

y = √63 = 3√7

and x/2 = y = 3√7. so x = 6√7

7. BD is the diameter hence arc BAD = 180 degrees

if arc ABC is 110 then arc BA = 110 /2 = 55

Arc AD = arc BAD - arc BA

Arc AD = 180 - 55

Arc AD = 125 degrees

8. Angle ROT = arc sin (3/5)

Angle ROT = 36.87 degrees

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The area of the plot of land that has a top view as shown on a map above is calculated as: C. 112 square meters

The shape of the plot of land can be decomposed into two different triangles and 1 rectangle.

Area of triangle 1 = 1/2 * base * height

base = 8 m

height = 5 m

Area of triangle 1 = 1/2 * 8 * 5 = 20 square meters

Area of triangle 2 = 1/2 * base * height

base = 8 m

height = 7 m

Area of triangle 2 = 1/2 * 8 * 7 = 28 square meters

Area of the rectangle = length * width = 8 * 8

= 64 square meters.

Therefore, we have:

Area of the plot of land = 64 + 28 + 20

= 112 square meters.

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If in the mail, she received 14 envelopes, and each envelope included $2. 70,Sarah received a total of $37.80 in the mail.

Sarah received a total of 14 envelopes, and each envelope had $2.70. To find out how much money she received in total, we can multiply the number of envelopes by the amount of money in each envelope:

Total money = 14 × $2.70

We can simplify the expression by first multiplying the whole number, 14, by the tenths value of $2.70, which is $0.70:

Total money = $37.80

This amount of money is the sum of all the money in the 14 envelopes she received. It can be useful to double-check the answer by adding up the amounts in each envelope manually, but in this case, it is not necessary since we have already calculated the total.

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The equation that will be  used to determine the population, y, of Log Village x years after 2010 is y= 1800(1.09)ˣ

What is equation?

An equation is a mathematical statement which is made by two expressions connected by an equal sign. For example, 3x – 8 = 16 is an equation. Solving this equation, we get the value of the variable x as x = 8.

The population of Log Village is 1800 in 2010, and the population increases each year by 9%.

Initial population(p)= 1800

rate of increase(r)= 9%

Time(t)= x years.

The formula for the population after n years is p(1+r/100)ⁿ.

To determine the equation for the population after x years we have to put the values in the above expression.

So putting all the values we get,

The population, y, of Log Village x years after 2010 is

          y= 1800( 1+9/100)ˣ

          y= 1800(1.09)ˣ

Hence, The equation that will be  used to determine the population, y, of Log Village x years after 2010 is y= 1800(1.09)ˣ

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The lengths of the base and height are, 13 miles and 52 miles respectively.

Given that;

The area of a parallelogram is, 676 square miles

And, the height is four times the length of the base,

Hence, We get;

Length of base = x

Height = 4x

Since, Area of the parallelogram = Base × Height

Hence, We get;

676 = x × 4x

x² = 676 / 4

x² = 169

x = √169

x = 13 miles

Thus, Length of base = x = 13 miles

Height = 4x = 4 x 13

                  = 52 miles

Thus,, The lengths of the base and height are, 13 miles and 52 miles respectively.

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Answer: the slope of line = y2-y1÷x2-x1

Step-by-step explanation:x1=1 x2=-1 y1=9 y2=6

                                              slope=(6-9)÷(-1-1)

                                               slope= (-3)÷(-2)

                                                answer= 3

                                                               2

The area of the parallelogram is 30 square inch.

A parallelogram is simply a quadrilateral with two pairs of parallel sides.

The area of parallelogram is expressed as:

A = base × height

From the diagram:

Plug the given values into the above equation and solve for area.

Area = base × height

Area = 10 in × 3 in

Area = 30 in²

Therefore, the area is 30 in².

Option D) 30 in² is the correct answer.

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Option D is correct, the area of given parallelogram is 30 square inches

Parallelogram is a simple quadrilateral with two pairs of parallel sides.

The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.

Area of parallelogram =bh

=10×3

=30 square inches

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Thus, the obtained area of sector for the given circle is found as 43.96 in².

Two radii that meet at the centre to form a sector define a circle. The sector is the portion of the circle created by these two radii. Knowing a circle's central angle assessment and radius measurement are both crucial for solving circle-related difficulties.

The curved portion that runs along the circle's perimeter and joins the ends of a two radii that make up a sector is known as the sector arc.

given data:

Formula for the area of sector:

area of sector = Ф /360 * (πr²)

area of sector = 140/360 * (3.14 *6²)

area of sector = 7/18 * 3.14 *36

area of sector = 43.96 in²

Thus, the obtained area of sector for the given circle is found as 43.96 in².

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The electrician needs approximately 296.26 feet of wire.

The links between triangle's sides and angles are studied in the mathematic discipline known as trigonometry. It entails an examination of triangle's angles, lengths, and areas as well as their angles' mathematical properties (such as sine, cosine, and tangent).

The situation described can be modeled as a right triangle, where the wire from the electric box to the pole is the hypotenuse, and the angle of elevation is one of the acute angles. Let x be the length of the wire needed in feet.

Using trigonometry, we can write:

sin(17°) = opposite / hypotenuse

where the opposite side is the height of the connection on the pole above the ground. We can solve for the hypotenuse (the length of wire needed) as follows:

hypotenuse = opposite / sin(17°)

To find the opposite side, we can use the fact that the angle of elevation is 17° and the distance from the pole to the point on the ground directly beneath the connection is 85 feet. This distance is the adjacent side of the triangle, so we can write:

tan(17°) = opposite / 85

Solving for the opposite side, we get:

opposite = 85 tan(17°)

Substituting this into the formula for the hypotenuse, we get:

hypotenuse = (85 tan(17°)) / sin(17°)

hypotenuse ≈ 296.26 feet

Therefore, the electrician needs approximately 296.26 feet of wire.

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The term you're looking for is "uncertain digits."

Uncertain digits refer to the digits in a measurement that exceed the level of certainty provided by the measuring instrument.

Measurements, it is crucial to recognize the limitations of the instruments being used, as this can impact the precision and accuracy of the results.
Precision is the degree to which an instrument can consistently produce the same measurement, while accuracy is the closeness of a measurement to its true value.

Uncertain digits can affect both of these aspects.
To better understand uncertain digits, consider the following step-by-step explanation:
Identify the measuring instrument:

This could be a ruler, thermometer, or any other device used to take measurements.
Determine the instrument's least count:

The least count is the smallest unit the instrument can measure.

A ruler with millimeter markings has a least count of 1 millimeter.
Record the measurement:

When taking a measurement, include all the certain digits (those within the instrument's least count) and one uncertain digit.

The uncertain digit is an estimate, and it represents the best guess within the least count of the instrument.
Keep in mind the limitations:

Recognize that uncertain digits are an inherent part of the measuring process and that they affect the precision and accuracy of the results.
Uncertain digits are the digits that exceed the certainty of a measuring instrument.

It is important to consider these digits and the limitations of the instruments used when conducting experiments or making measurements.

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Answer:

If a person weighs 150 pounds and their shoes weigh 10 pounds, then the person's weight in pounds is 150 x .10 = 15 pounds.