While playing a real-time strategy game, Josh created military units for battle: long swordsmen, spearmen, and crossbowmen. Long swordsmen require 45 units of food and 15 units of gold. Spearmen require 30 units of food and 25 units of wood. Crossbowmen require 25 units of wood and 45 units of gold. If Josh used 2025 units of gold, 1375 units of wood, and 1950 units of food to create the units, how many of each type of military unit did he create?

Answers

Answer 1

He creates 30 long swordsmen , 20 spearmen, and 35 crossbowmen in a real-time strategy game.

Let the number of long swordsmen be L, spearmen be S, and crossbowmen be C

Total food used

45L + 30S = 1950

Total gold used

15L  + 45C = 2025

Total wood used

25S + 25C = 1375

From equation 1

30S = 1950 - 45L

S = 65 - 1.5 L

Putting the value of S in Equation 3

25(65-1.5L) + 25C = 1375

1625 - 37.5L + 25C = 1375

-37.5 L + 25C = -250

37.5L - 25C = 250

37.5L = 250 + 25C

L = 6.66 + 0.66C

Putting the value of L in Equation 2

15(6.67 +0.67C)  + 45C = 2025

100 + 10C + 45C = 2025

55C = 1925

C =  35
L = 6.66 + 0.66C

L = 6.66 + 23.1

L = 30

S = 65 - 1.5 L

S = 65 - 1.5(30)

S = 20

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Related Questions

if my father has one copy of the c282y, and my mother does not have it, what is the probability i inherit the c282y?

Answers

The C282Y mutation is a genetic variation that can cause hereditary hemochromatosis, a disorder that causes the body to absorb too much iron from food.

The C282Y mutation is inherited in an autosomal recessive pattern, which means that a person must inherit two copies of the mutation (one from each parent) to develop the disorder.

In this case, your father has one copy of the C282Y mutation and your mother does not have it. This means that your father is a carrier of the mutation, but does not have the disorder. Since your mother does not have the mutation, she cannot pass it on to  you.

Therefore, to determine the probability that you inherit the C282Y mutation, we need to consider the inheritance pattern. You inherit one copy of each gene from each parent, so you have a 50% chance of inheriting the mutated gene from your father and a 50% chance of inheriting a normal gene from your mother.

If you inherit the mutated gene from your father, and a normal gene from your mother, then you will also be a carrier of the C282Y mutation like your father, but you will not have the disorder unless you inherit a second mutated gene from your other parent.

So, the probability that you inherit the C282Y mutation from your father is 50%.

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How many intersections are there between the graphs of f(x) = Ix^2-4I and g(x)+2^x?

Answers

The number of intersections between the graphs of f(x) = Ix² - 4I and g(x) = 2ˣ is 3

Calculating the number of intersections between the graphs

From the question, we have the following parameters that can be used in our computation:

f(x) = Ix² - 4I

g(x) = 2ˣ

Next, we plot the graphs of the functions f(x) and g(x)

From the graph, we have the number of intersections between the graphs to be 3

The points of intersections are approximately (-2.1, 0.2), (-1.9, 0.3) and (1.3, 2.4)

Hence, the number of intersections between the graphs is 3

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A streetlamp illuminates a circular area that is 17 meters across through the center. How many square meters of the street is covered by the light? Round to the nearest hundredth and approximate using π = 3.14.

226.87 m2
453.73 m2
907.46 m2
1,814.92 m2

Answers

The quantity of the street that is being covered by the light would be = 226.87 m². That is option A.

How to calculate the area of a circle?

To calculate the area of the circle, the formula that should be used is given as follows;

Area or circle = π r²

where r = Diameter/2

But diameter = 17/2

radius = 8.5

Area of circle = 3.14×8.5×8.5

= 226.87 m²

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do single-parent families tend to be more impoverished than families with two parents? in order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level.

Answers

Yes, single-parent families tend to be more impoverished than families with two parents.  the findings suggest that family structure is an important factor in understanding the prevalence of poverty in a given population.

The study of the sample of 35 one-parent and 65 two-parent families found that a significantly higher percentage of single-parent families fell below the poverty level compared to two-parent families. This result is consistent with previous research that has shown that single-parent families, particularly those headed by women, are at a greater risk of poverty due to the challenges of raising children alone and the lack of dual incomes. Additionally, single-parent families often face more barriers to obtaining education and employment opportunities that could increase their income. Overall, the findings suggest that family structure is an important factor in understanding the prevalence of poverty in a given population.

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a company advertises that food preparation time can be significantly reduced with the handy dandy slicer. a sample of 12 individuals prepared the ingredients for a meal with and without the slicer. you are given the preparation times below. preparation times person with slicer without slicer 1 20 22 2 12 18 3 20 18 4 14 22 5 19 19 6 20 21 7 19 18 8 15 12 9 22 18 10 19 25 11 21 26 12 23 20 to test the null hypothesis, the appropriate probability distribution to use is a . a. normal distribution b. t distribution c. chi-square distribution d. binomial distribution

Answers

The appropriate probability distribution to use to test the null hypothesis in this scenario is the t distribution. This is because the sample size is small (n = 12) and the population standard deviation is unknown. The t distribution allows for estimation of the population mean based on the sample mean and standard deviation.


To test the null hypothesis for this problem, you should use the t-distribution. Here's an explanation of why:
1. You have a small sample size (n = 12), which is less than 30. When you have a small sample size, the t-distribution is more appropriate than the normal distribution.
2. The data consists of paired samples, with each person using the slicer and not using the slicer. This means you are comparing the mean differences within the paired samples.
3. The problem doesn't involve proportions or frequencies, so the chi-square and binomial distributions are not suitable here.

Based on these reasons, the appropriate probability distribution to use for this problem is the t-distribution (option B).

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The table shows the expenses for Deja's first year of college. Tuition & Fees Housing Books & Supplies Transportation $8,232 $6,540 $1,130 $1,900 If Deja's grandparents are paying for 80% of her first year's expenses, how much will Deja need to pay for?​

Answers

If Deja's grandparents are paying for 80% (percentage) of her first year's expenses, the amount that Deja needs to pay for is $3,560.40.

How is the amount determined?

The amount that Deja needs to pay is computed as the difference between 100% of the total expenses and 80%.

The percentage refers to the ratio of one value, quantity, or number compared to another.

Tuition & Fees = $8,232

Housing Books = $6,540

Supplies = $1,130

Transportation = $1,900

Total expenses = $17,802

80% of first year's expenses = $14,241.60 ($17,802 x 80%)

20% (100% - 20%) of the expenses = $3,560.40 ($17,802 x 20%)

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PLS NEED HELP
Equation of the line with a slope of -3 and passing through the point (4, -5)

Answers

The equation of the line with a slope of -3 and passing through the point (4, -5) is y = -3x + 7.

How to Find the Equation of a Line?

The equation of a line can be expressed in slope-intercept form: y = mx + b, where m represents the slope and b represents the y-intercept.

Given:

Slope (m) = -3

Point (4, -5)

Substituting the given slope and point into the equation, we have:

-5 = -3(4) + b

-5 = -12 + b

b = 7

Now that we have the value of b, we can write the equation of the line:

y = -3x + 7

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the length of a rectangle is six times its width. if the perimeter of the rectangle is , find its area.

Answers

If the perimeter of the rectangle is given, then we can find the sum of all sides, which is 2 times the length plus 2 times the width.

Perimeter = 2l + 2w = 2(6w) + 2w = 14w

Given perimeter = 28

So, 14w = 28, which means w = 2. Then, l = 6w = 12.

Therefore, the area of the rectangle is A = l x w = 12 x 2 = 24 square units.

To find the area of a rectangle, we need to know both the length and width. In this case, we are given a relationship between the length and the width of the rectangle. Specifically, the length is six times the width, or l = 6w.

We are also given the perimeter of the rectangle. The perimeter is the sum of all four sides of the rectangle, which is 2 times the length plus 2 times the width. So, we can write:

Perimeter = 2l + 2w

Substituting l = 6w, we get:

Perimeter = 2(6w) + 2w = 14w

We are told that the perimeter of the rectangle is 28, so we can set 14w equal to 28 and solve for w:

14w = 28

w = 2

Once we know the value of w, we can find the value of l:

l = 6w = 6(2) = 12

Now that we know both the length and the width, we can calculate the area of the rectangle:

A = l x w = 12 x 2 = 24

Therefore, the area of the rectangle is 24 square units.

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Lo
9.
The graph of f(x) = x² was translated 4.5 units to the left to create the graph of function g. Which function represents g?
AO g(x) = (x - 4.5)²
B.Og(x) = (x + 4.5)²
c.O g(x)=x²-4.5
D.O g(x) = x² + 4.5

Answers

When the function is translated 4.5 units to the left to create the graph of function g(x), hence the resulting function will be g(x) = (x + 4.5)²

Given,

The function expressed as

f(x) = x^2

Translation of coordinates:

If the function is translated 4.5 units to the left to create the graph of function g(x), hence the resulting function will be:

g(x) = (x + 4.5)^2

Note that translation to the left means addition of the factor by which the graph is translated.

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Polly Ester is creating a trapezoidal welcome mat. She has enough money to purchase 1114ft2 of material. If the bases of the trapezoid are 5 ft and 4 ft, the height of the welcome mat will be

Answers

The height of the trapezoidal welcome mat that Polly Ester can create with 1114 ft2 of material, with bases of 5 ft and 4 ft, is approximately 247.56 ft.

To find the height of the trapezoidal welcome mat, we can use the formula for the area of a trapezoid, which is:

[tex]$A = \frac{(b_1 + b_2)}{2} \cdot h$[/tex]

where A is the area, [tex]b_1[/tex] and [tex]b_2[/tex] are the lengths of the parallel bases, and h is the height.

We know that the bases of the welcome mat are 5 ft and 4 ft, so we can substitute these values into the formula:

1114 = (5 + 4) / 2 * h

Simplifying this equation, we get:

1114 = 4.5h

Dividing both sides by 4.5, we get:

h = 1114 / 4.5

h ≈ 247.56 ft

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if x is a random variable following the binomial distribution b(n, 3/n), what distribution can you approximate the distribution of x to for large n?

Answers

We can approximate the distribution of x to a normal distribution with mean μ = 3 and variance σ² = 3(1-3/n).

When n is large, the binomial distribution with parameters n and p can be approximated by a normal distribution with mean μ = np and variance σ² = np(1-p). This is known as the normal approximation of the binomial distribution.

In this case, x is a binomial distribution with parameters n and p = 3/n. As n gets larger, p gets smaller and the normal approximation becomes more accurate.

Therefore, we can approximate the distribution of x to a normal distribution with mean μ = 3 and variance σ² = 3(1-3/n).

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Given question is incomplete, the complete question is below

if x is a random variable the binomial distribution, b(n, 3/n). What distribution can you approximate the distribution of x to for large n?

The orthocenter is __________ on the exterior of the triangle. Question 4 options: A) always B) never C) infrequently D) sometimes

Answers

The orthocenter can be located on the exterior of the triangle, but this is not always the case is sometimes. D.

The orthocenter of a triangle is the point of intersection of the three altitudes of the triangle.

An altitude is a line segment drawn from a vertex of the triangle perpendicular to the opposite side or its extension.

The orthocenter can lie on the exterior of the triangle.

This occurs when the triangle is obtuse or when the altitude from one vertex of the triangle intersects the extension of the opposite side.

In such situations, the orthocenter will be located outside the triangle itself.

It is important to note that in other cases, such as with acute or right triangles, the orthocenter will lie within the interior of the triangle and not on the exterior.

The intersection of the triangle's three elevations is known as the orthocenter. A line segment known as an altitude is drawn from the triangle's vertex perpendicular to the other side or its extension.

It is possible for the orthocenter to be outside the triangle.

This happens if the triangle is acute or if the height from one of the triangle's vertices touches the extension of the other side.

The orthocenter will be outside of the triangle in such circumstances.

It's vital to keep in mind that the orthocenter will often reside inside the triangle and not on the outside in other scenarios, such as with acute or right triangles.

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You spin the spinner twice. Find the probability of spinning yellow both times. A spinner with 3 equal parts is shown. The parts are red, yellow, and blue. The probability of spinning yellow both times is

Answers

The probability of spinning yellow both times is approximately 0.1111 or 11.11%.

To find the probability of spinning yellow both times when spinning a spinner with three equal parts (red, yellow, and blue), we need to consider the total number of equally likely outcomes and the number of favorable outcomes.

Since the spinner has three equal parts, there are three possible outcomes each time we spin the spinner.

Thus, the total number of equally likely outcomes for two spins is 3 multiplied by 3, which is 9 (3 outcomes for the first spin and 3 outcomes for the second spin).

Now, let's determine the number of favorable outcomes, which in this case is spinning yellow both times.

Since the spinner has only one yellow part, the probability of spinning yellow on the first spin is 1 out of 3.

Similarly, on the second spin, the probability of spinning yellow again is also 1 out of 3.

Therefore, the number of favorable outcomes is 1 multiplied by 1, which is 1.

Now we can calculate the probability by dividing the number of favorable outcomes by the total number of equally likely outcomes:

Probability = Favorable outcomes / Total outcomes = 1 / 9 ≈ 0.1111 or 11.11% (rounded to four decimal places).

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if the objective function is q=x^2y and you know that x y=10 write the objective function first in terms of x and then in terms of y.

Answers

If the objective function is q=[tex]x^2y[/tex] and you know that x y=10, the objective function first in terms of x is q = 10x and then in terms of y is q = 100/y.

To write the objective function in terms of x, we can use the given value of xy = 10 and solve for y. Dividing both sides by x, we get:
y = 10/x
Now we can substitute this expression for y into the original objective function, q = [tex]x^2y[/tex], to get:
q = x^2(10/x)
Simplifying this, we get:
q = 10x
So the objective function in terms of x is q = 10x.
To write the objective function in terms of y, we can use the same approach. Solving the given equation xy = 10 for x, we get:
x = 10/y
Substituting this into the original objective function, q = [tex]x^2y[/tex], we get:
q = [tex](10/y)^2y[/tex]
Simplifying this, we get:
q = 100/y
So the objective function in terms of y is q = 100/y.

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BRAINIEST TO WHOEVER CAN ANSWER THIS QUESTION!

Answers

Answer:

x = 10.1785714286 which rounds to 10.2

y = 15.25 which rounds to 15.3

Step-by-step explanation:

The 4 angles inside any quadrilateral = 360

We know that 1 angle is 105. So that means the other 3 angles are:

360-105 = 255

Also, any 2 adjacent angles in a quadrilateral = 180.

So 105 + (4y+14) = 180.

Let's solve for y.

105 + (4y+14) = 180

4y+14 = 75

4y=61

y=15.25

Now let's solve for X - - -

We know that the 3 angles OTHER than the 105 add to 255.

4y+14 + 7y+1 + 7x+1 = 255

11y+16+7x=255

11y+7x=239

If y = 15.25, plug that in and solve for x.

11y + 7x = 239

11(15.25) + 7x = 239

167.75 + 7x = 239

7x = 71.25

x = 10.1785714286

Let's double check that everything adds to 360:

105 + 4y+14 + 7y+1 + 7x+1 = 360

105 + 4(15.25) + 14 + 7(15.25) + 1 + 7(10.18) + 1 = 360

HELP PLEASE 50 PTS AND BRAINLIEST


1.) WZ = 6, ZX = 8, and WY = 9. Find XY.
2.) RS = 6, RT = 3, and TS = 4 1/2. Find MR.
3.) Given: DE || AB, AC = 15, DC = 10, and EC = 8. Find BE.
4.) If AC = 12, BE = 3, AD = 4, and EC = 6, is DE parallel to AB?

Answers

XY is less than 14,  MR is less than 10.5, if DE || AB, AC = 15, DC = 10, and EC = 8 then BE is equal to 18.75, the sides are not proportional and DE is not parallel to AB.

To find XY, we can use the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Using this theorem, we have:

WZ + ZX > WY

6 + 8 > 9

14 > 9

XY must be less than the sum of WZ and ZX. Therefore, XY is less than 14.

To find MR,

RS + ST > RT

6 + 4 1/2 > 3

10.5 > 3

Since the inequality holds true, we can conclude that MR must be less than the sum of RS and ST. Therefore, MR is less than 10.5.

By the similar triangles property:

EC/DC = AC/BC

Substituting the given values:

8/10 = 15/BC

Cross-multiplying:

8 × BC = 10 × 15

BC = 150/8

BC = 18.75

BC=BE

BE is equal to 18.75.

If DE is parallel to AB, then the ratio of the lengths of the corresponding sides AD and BE should be equal.

Using the given lengths:

AD/BE = 4/3

Ratio does not equal 1, which means the sides are not proportional and DE is not parallel to AB.

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2. The area of any regular polygon can be calculated based on the following formula, we
and P is the perimeter: A = aP. Calculate the area and perimeter of the shape below
3√3 m
6m

Answers

The area of the hexagon is 81 square meters, and the perimeter is 18√3 meters.

To calculate the area and perimeter of the given shape, we need to identify the shape. Based on the given dimensions of 3√3 m for one side and 6 m for another side, it appears that we are dealing with a regular hexagon.

A regular hexagon has six equal sides and six equal angles. The formula for the area of a regular polygon is A = ½ * a * P, where "a" is the length of one side and "P" is the perimeter.

Given that one side of the hexagon is 3√3 m, we can calculate the perimeter:

Perimeter = 6 * side length = 6 * (3√3) m = 18√3 m

To calculate the area, we use the formula:

Area = ½ * a * P = ½ * (3√3) * (18√3) = 27√3 * √3 = 27 * 3 = 81 m²

Therefore, the area of the hexagon is 81 square meters, and the perimeter is 18√3 meters.

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find parametric equations for the line through (8,-9,9) parallel to the -axis.

Answers

The parametric equations for the line through $(8,-9,9)$ parallel to the $-axis$ are $x = 8$, $y = -9 + t$, and $z = 9$.

Since the line is parallel to the $-axis$, we know that the direction vector of the line is $\langle 0, 1, 0 \rangle$. We can use this information to write the parametric equations of the line as:

x=8+0t+=8

y=-9+1t=-9+t

z=9+0t==9

where $t$ is a parameter. Therefore, the parametric equations for the line through $(8,-9,9)$ parallel to the $-axis$ are $x = 8$, $y = -9 + t$, and $z = 9$.

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Are these two triangles similar?

A. Yes, using AA.
B. Yes, using SAS.
C. Yes, using SSS.
D. No, they are not similar.

Answers

Are these two triangles similar: B. Yes, using SAS.

What are the properties of similar triangles?

In Mathematics and Geometry, two (2) triangles are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.

Additionally, the lengths of corresponding sides or corresponding side lengths are proportional to the lengths of corresponding altitudes when two (2) triangles are similar.

Based on the side, angle, side (SAS) similarity theorem, we can logically deduce that ∆EIF is congruent to ∆HIG when the angles F (∠F) and (∠G) are congruent.

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A = 112,4° and B = 48,6°
sinA ÷2

Answers

The calculated value of the expression sinA ÷2 is 0.8310

Calculating the value of the expression

From the question, we have the following parameters that can be used in our computation:

Measure of angle A = 112,4° Measure of angle B = 48,6°

To calculate sinA ÷2, we substitute 112,4°  for A in the expression

Using the above as a guide, we have the following:

sinA ÷2 = sin(112.4 ÷2)

Evaluate the quotient in the above equation

So, we have

sinA ÷2 = sin(56.2)

Using a calculator, we take the sine value of 56.2 degrees

This gives

sinA ÷2 = 0.8310

Hence, the value of the expression sinA ÷2 is 0.8310

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a parabola opening up or down has vertex (-3,2) and passes through (-7, 2/3) . write its equation in vertex form.

Answers

The equation of the parabola in vertex form is y = (-1/12)(x + 3)^2 + 2, which opens downwards since the leading coefficient is negative.

The equation of the given parabola in vertex form is y = a(x + 3)^2 + 2, where a is a constant that depends on whether the parabola opens up or down.

To determine the value of a, we can use the fact that the parabola passes through (-7, 2/3). Substituting these values into the equation, we get:

2/3 = a(-7 + 3)^2 + 2

2/3 = 16a + 2

16a = -4/3

a = -1/12

Therefore, the equation of the parabola in vertex form is

y = (-1/12)(x + 3)^2 + 2.

The vertex form of a parabola is y = a(x - h)^2 + k, where (h, k) is the vertex of the parabola. In this case, we are given that the vertex is (-3, 2), so we can write the equation as y = a(x + 3)^2 + 2.

To find the value of a, we use the fact that the parabola passes through (-7, 2/3). Substituting these values into the equation, we get 2/3 = a(-7 + 3)^2 + 2. Simplifying this equation, we get 2/3 = 16a + 2, which we can solve for a to get a = -1/12.

Therefore, the final equation of the parabola in vertex form is y = (-1/12)(x + 3)^2 + 2, which opens downwards since the leading coefficient is negative.

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Someone please help me out.

Answers

The probability of randomly choosing a square and the letter "I" together is 0.0227.

What is the probability?

Probability of choosing a given square:

The total number of possible outcomes = 16

The probability of choosing a particular square = 1/16

The probability of choosing a particular letter in MISSISSIPPI:

Let the letter be "I"

There are 4 "I"s in MISSISSIPPI out of a total of 11 letters

The probability of choosing an "I" = 4/11.

The probability of choosing a square and the letter "I" = (1/16) × (4/11)

The probability of choosing a square and the letter "I"  = 4/176 or 0.0227.

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10. Is the relationship between the variables in the table a direct variation, an inverse variation,
both, or neither? If it is a direct or inverse variation, write a function to model it.
x 2 5 15 20
y 20 15 2 2


O inverse variation; y = 10/x
Oneither
O direct variation; y = x + 10
O direct variation; y = 10x

Answers

The relation is neither because correct inverse variation is y=8x.

The relationship between the variables x and y in the table is an inverse variation. We can see that as x increases, y decreases, and vice versa.

To find the equation that models this inverse variation, we can use the formula y = k/x, where k is a constant.

To solve for k, we can use any pair of values from the table:

When x = 2, y = 40

40 = k/2

k = 80

So the equation that models this inverse variation is y = 80/x.

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Complete question:

Is the relationship between the variables in the table a direct variation, an inverse variation, both, or neither? If it is direct or inverse write a function to model it.

x 2 5 20 40

y 40 20 5 2

O inverse variation; y = 10/x

O neither

O direct variation; y = x + 10

O direct variation; y = 10x

a boy owns 1 pairs of pants, 7 shirts, 2 ties, and 5 jackets. how many different outfits can the boy wear to school if each outfit must consist of one of each item?

Answers

Answer:

I believe the boy would have 1 different outfit due to the only pair of pants but there also could be 7 different outfits if he wore the same pants each day with a different shirt and tie or shirt and jacket.

Step-by-step explanation:

I do not know if I’m correct but I hope I am. I still hope this helps! ^.^’

i need help with this​

Answers

a - The lines are parallel

b - The lines perpendicular

c - The lines are perpendicular

When are equations of lines perpendicular or parallel?

Based on their slopes, lines' equations can be categorized as parallel or perpendicular. A line's slope can be used to determine how steep or flat a line is. The slopes of two lines interact to determine whether two lines are parallel, perpendicular, or neither.

We can see that when the slope of the second line is inverse to the slope of the first line then  we can say that the lines are perpendicular but when the slopes are the same, we can say that the lines are parallel.

In a, the slope of tghe first line is 2 and so is the slope of the second line thus they are parallel. In b, the slope of the first line is 3 while the slope of the second line is -1/3 thus they are perpendicular.

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Use Eq. (1) from the text to expand the function into a power series with center c = 0 and determine the set of x for which the expansion is valid. f(x) = 1 / 6 + x^8 The interval of convergence is _____________

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To expand the function f(x) = 1/6 + x^8 into a power series with center c = 0, we can use Eq. (1) from the text, which states that:

f(x) = ∑[n=0 to ∞] (f^(n)(c)/n!)(x-c)^n

Plugging in c = 0 and f(x) = 1/6 + x^8, we get:

f(x) = ∑[n=0 to ∞] [(d^n/dx^n)(1/6) / n!] x^n + ∑[n=0 to ∞] [(d^n/dx^n)(x^8) / n!] x^n

The first term simplifies to (1/6) ∑[n=0 to ∞] (0 / n!) x^n = 1/6, while the second term simplifies to ∑[n=0 to ∞] (x^(n+8) / n!) = ∑[n=8 to ∞] (x^n / (n-8)!).

Therefore, the power series expansion of f(x) is:

f(x) = 1/6 + ∑[n=8 to ∞] (x^n / (n-8)!)

The interval of convergence can be determined using the ratio test, which gives:

lim[n→∞] |(x^(n+1) / ((n-7)!)) / (x^n / ((n-8)!))| = lim[n→∞] |x / (n-7)| = 0

This limit is less than 1 for all values of x, which means that the power series converges for all x. Therefore, the interval of convergence is (-∞, +∞)

To answer the question, we first need to use Eq. (1) from the text to expand the function f(x) = 1/6 + x^8 into a power series with center c = 0. We then simplify the two terms using the derivatives of 1/6 and x^8, respectively. Finally, we determine the interval of convergence using the ratio test.

The power series expansion of f(x) is 1/6 + ∑[n=8 to ∞] (x^n / (n-8)!), and it converges for all values of x, which means that the interval of convergence is (-∞, +∞).

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A cylindrical can of cocoa has the dimensions shown at the right. What is the approximate surface area available for the​ label? 8,9

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The approximate surface area available for the​ label is 26 in²

Finding the approximate surface area available for the​ label

From the question, we have the following parameters that can be used in our computation:

Radius, r = (3/2) meters

Height, h = 2 meters

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Using the above as a guide, we have the following:

Area available for label = Area of cylinder - Circle area

So, we have

Area available for label = 2πr(r + h) - πr²

Substitute the known values in the above equation, so, we have the following representation

Surface area = 2π * (3/2) * (3/2 + 2) - π * (3/2)²

Evaluate

Surface area = 26

Hence, the approximate surface area available for the​ label is 26 in²

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find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 simultaneously. f(x,y) = 2x3 − 8xy y3 (x, y) = ( ) (smaller x-value) (x, y) = ( ) (larger x-value)

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The values of x and y are:

(x, y) Smaller x-value = (0, 0)

(x, y) Larger x-value =  [tex](\frac{4}{3} (2^{1/3} ), \ \frac{4}{3} (2^{2/3} ))[/tex]

Given that f(x, y) = [tex]2x^{2}-8xy+y^{3}[/tex]

Now, [tex]f_{x} (x,y) = \frac{d}{dx} (2x^{3} -8xy+y^{3})[/tex]

[tex]=6x^{2} -8y+0[/tex] (when we take partial derivative with respect to any variable, then the other variables are treated as constants)

[tex]=6x^{2} -8y[/tex]

Similarly, [tex]f_{y} (x,y) = \frac{d}{dy} (2x^{3} -8xy+y^{3})[/tex]

[tex]=0-8x+3y^{2}[/tex]

[tex]=-8x+3y^{2}[/tex]

Now set  [tex]f_{x}[/tex] = 0 and [tex]f_{y}[/tex] = 0

That is [tex]f_{x}[/tex] = 0 ⇒ [tex]6x^{2} -8y=0[/tex] ⇒ [tex]y = \frac{\ 3x^{2} }{4}[/tex] ----------(1)

and [tex]f_{y}[/tex] = 0 ⇒ [tex]-8x + 3y^{2} = 0[/tex] ⇒ [tex]x=\frac{\ 3y^{2} }{8}[/tex] ----------(2)

Solving (1) and (2) we get:

[tex]x=\frac{3}{8}(\frac{3x^{2} }{4} )^{2} \Rightarrow\ x=\frac{\ 27x^{2} }{128} \Rightarrow \ 27x^{2} -128x=0[/tex]

[tex]\Rightarrow x\ (27x^{3} -128)=0[/tex]

x will have two values,

[tex]\Rightarrow x=0[/tex] or,

[tex]x^{3} = \frac{128}{27}\ \Rightarrow\ x^{3} = \frac{2\ \times\ 4^{3} }{3^{3} } \Rightarrow\ x=\frac{4}{3}(\sqrt[3]{2} )[/tex]

Similarly, y will have two values,

[tex]y = \frac{3}{4} (\frac{128}{27} )^{2/3}[/tex] [tex]\Rightarrow \ (\frac{4}{3} )2^{2/3}[/tex] or,

y = 0

Therefore, the final answers are,

(x, y) Smaller x-value = (0, 0)

(x, y) Larger x-value =  [tex](\frac{4}{3} (2^{1/3} ), \ \frac{4}{3} (2^{2/3} ))[/tex]

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Two neighbors in a rural area want to know the distance between their homes in miles. What should the neighbors use as a conversion factor to convert the distance 4224 feet into miles?

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The distance between their homes is approximately 0.8 miles.

To convert feet to miles, the neighbors can use the following conversion factor:

1 mile = 5,280 feet

To convert the distance of 4,224 feet into miles, they can divide the distance by the conversion factor:

Distance in miles = 4,224 feet / 5,280 feet/mile

Calculating this, the neighbors would find:

Distance in miles ≈ 0.8 miles

Therefore, the distance between their homes is approximately 0.8 miles.

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the housing market has recovered slowly from the economic crisis of 2008. recently, in one large community, realtors randomly sampled 49 bids from potential buyers to estimate the average loss in home value. the sample showed the average loss was $8870 with a standard deviation of $1645. can we use this data to make a 95% confidence interval for the mean loss in value for all bids in this community? if so, what is that interval? if not, why not?

Answers

We can be 95% confident that the true mean loss in value for all bids in this community is between $8397.81 and $9342.19 based on the given sample.

Yes, we can use the given data to construct a 95% confidence interval for the mean loss in value for all bids in this community.

To construct the confidence interval, we first need to calculate the standard error of the mean, which is the standard deviation of the sample divided by the square root of the sample size. In this case, the standard error of the mean is:

standard error of the mean = [tex]$\frac{1645}{\sqrt{49}}=235.08$[/tex]

Next, we use a t-distribution with 48 degrees of freedom (since we used a sample size of 49) to find the margin of error for a 95% confidence interval. The t-value for a 95% confidence interval with 48 degrees of freedom is 2.01.

margin of error = 2.01 * (235.08) = 472.19

Finally, we can construct the 95% confidence interval by adding and subtracting the margin of error from the sample mean:

95% confidence interval = $8870 ± $472.19 = ($8397.81, $9342.19)

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