The original selling price of a jacket was s dollars. The selling price was then changed on two occasions by the store owner. Its price is now represented by 0. 85 (1. 4s). Which expression could explain what happened to the price of the jacket?

The quadrilateral formed by the vertices A(-2, 4), B(2, 1), C(-1, -3), and D(-5, 0) has an area of 21/2 square units.

To find the area of the quadrilateral with the given coordinates A(-2, 4), B(2, 1), C(-1, -3), D(-5, 0), we can use the formula for the area of a quadrilateral in the coordinate plane:

Area = |(1/2)(x1y2 + x2y3 + x3y4 + x4y1 - x2y1 - x3y2 - x4y3 - x1y4)|

where (x1, y1), (x2, y2), (x3, y3), and (x4, y4) are the coordinates of the vertices of the quadrilateral.

Substituting the given coordinates, we get:

Therefore, the area of the quadrilateral with the given coordinates is 21/2 square units.

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The median of the random variable X with pdf f(x) = 3x−4 for x ≥1 (and 0 is approximately 1.482.

To find the median of a random variable with the given probability density function (pdf) f(x) = 3x - 4 for x ≥ 1 (and 0 otherwise), we need to solve for the constant m such that the cumulative probability P(X ≤ m) = 1/2.

First, we find the cumulative distribution function (CDF) by integrating the pdf:

F(x) = ∫(3x - 4) dx, where the limits of integration are from 1 to x.

F(x) = [(3/2)x² - 4x] evaluated from 1 to x.

Now, set the CDF equal to 1/2 to find the median:

1/2 = [(3/2)m² - 4m] - [(3/2)(1)² - 4(1)]

1/2 = (3/2)m² - 4m - (1/2)

1 = 3m² - 8m

0 = 3m² - 8m - 1

To find the value of m, we solve the quadratic equation above. Unfortunately, it cannot be factored easily, so we use the quadratic formula:

m = (-b ± √(b² - 4ac)) / 2a

In this case, a = 3, b = -8, and c = -1. Plugging in these values:

m ≈ (8 ± √(64 + 12)) / 6 ≈ 1.482

Since the median must be greater than or equal to 1, we take the positive root of the equation: m ≈ 1.482. Thus, the median of the random variable X with the given pdf is approximately 1.482.

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The number of gallons of water the pool can contain is approximately 3393 gallons.

To find the amount of water in gallons the pool can contain, we must find the volume of the cylindrical swimming pool, you can use the formula:

Volume = π * r² * h

Where r is the radius (half the diameter), and h is the height.

In this case, r = 12 feet / 2 = 6 feet, and h = 4 feet.

Volume = π * (6 ft)² * 4 ft ≈ 452.39 ft³

To convert cubic feet to gallons, use the given conversion factor (1 ft³ ≈ 7.5 gal).

Volume ≈ 452.39 ft³ * 7.5 gal/ft³ ≈ 3392.93 gal

Rounding to the nearest whole number, the pool can contain approximately 3393 gallons of water.

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Answer:

y = 1 + 2√7 or y = 1 - 2√7

Step-by-step explanation:

To complete the square, you need to add and subtract the square of half of the coefficient of the y term.

First, you can factor out a 1 from the y^2 - 2y term:

y^2 - 2y - 27 = 0

y^2 - 2y = 27

Next, take half of the coefficient of the y term (-2/2 = -1) and square it (1):

y^2 - 2y + 1 - 1 = 27

The "+1 -1" doesn't change the value of the equation, it's just a way to add 0 to the equation so we can complete the square.

Now you can rewrite the left side as a perfect square:

(y - 1)^2 - 28 = 0

Add 28 to both sides:

(y - 1)^2 = 28

Take the square root of both sides (remembering to include both positive and negative square roots):

y - 1 = ±√28

y = 1 ± 2√7

So the solutions are:

y = 1 + 2√7

y = 1 - 2√7

Answer: y=± 2√7+1

6.29

Step-by-step explanation: Use the formula

(b/2)^2  in order to create a new term. Solve for y by using this term to complete the square.

Using the given information, Riley bought 3.36 pounds of chicken thighs

From the question, we are to calculate the number of pounds of chicken thighs that Riley bought

We can use proportionality to find how many pounds of chicken thighs Riley bought.

If 5 pounds of chicken thighs cost $23.75, then we can write the following proportion:

Cost/Weight = $23.75/5 lb

We can use this proportion to find the cost per pound of chicken thighs:

That is,

Cost/Weight = $23.75/5 lb = $4.75/lb

Now we can use this rate to find how many pounds of chicken thighs Riley bought:

Cost of chicken thighs bought = $15.96

Weight of chicken thighs = Cost of chicken thighs / Cost per pound of chicken thighs

Weight of chicken thighs bought = $15.96 / $4.75/lb ≈ 3.36 lb

Hence, Riley bought 3.36 pounds of chicken thighs.

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The percent of change on the item 15%

the percent of change in price of the item can be expressed as:

percent of change = ( | new value - old value | / old value) × 100%

Where the vertical bars indicate absolute value.

Given that; the old price was $80 and the new price is $68. So, we can plug these values into the formula:

percent of change = ( | new value - old value | / old value) × 100%

percent of change = ( | 68 - 80 | / 80) × 100%

percent of change = ( | -12 | / 80) × 100%

percent of change = ( 12 / 80) × 100%

percent of change = ( 0.15 ) × 100%

percent of change = 15%

Therefore, Amazon reduced the price of the item by 15%.

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Answer:To complete the table using the compound interest table on page 28, we can use the following steps:

Determine the rate per period based on the given annual interest rate and compounding frequency.

Calculate the total number of periods based on the total time and compounding frequency.

Use the compound interest table to find the factor for the rate per period and the total number of periods.

Multiply the factor by the initial amount to find the amount after compound interest.

Subtract the initial amount from the amount after compound interest to find the compound interest.

Using these steps, we can complete the table as follows:

Annual

Interest Compounded

Rate

$900.00 5.50% Quarterly 1.375% 2 years 8

$640.00 6.00% Semiannually 3.00% 4 years 8

$1,340.00 5.00% Quarterly 1.25% 3 years 12

$6,231.40 5.75% Semiannually 2.875% 4 years 8

$3,871.67 12.00% Monthly 1.000% 4 years 48

$9,000.00 18.00% Monthly 1.500% 2 years 24

Quarterly 0.016%

Semiannually 0.033%

Monthly 0.058%

Monthly 0.058%

Monthly 1.500%

Quarterly 0.450%

Total

Time

2 years

4 years

3 years

4 years

4 years

2 years

Total

Number of

Periods

8

8

12

8

48

24

C.

$1,042.36

$812.65

$1,519.39

$7,305.10

$8,980.54

$20,790.56

Amount

Compound

Interest

d.

$42.36

$172.65

$119.39

$3,074.70

$4,109.87

$11,790.56

Note: The values in row C represent the amount after compound interest, and the values in row d represent the compound interest. The quarterly, semiannually, and monthly rates are rounded to three decimal places for convenience.

Step-by-step explanation:

The percent of error in the measurement is 8%. This means that the measured value of 5.52 miles is 8% less than the actual distance of 6 miles.

To find the percent of error, we need to calculate the difference between the measured value and the actual value, divide that by the actual value, and then multiply by 100 to convert to a percentage.

Actual distance around the neighborhood = 6 miles

Measured distance around the neighborhood = 5.52 miles

Difference = Actual distance - Measured distance

Difference = 6 miles - 5.52 miles

Difference = 0.48 miles

Percent of error = (|Difference| / Actual distance) x 100%

Percent of error = (|0.48| / 6) x 100%

Percent of error = 0.08 x 100%

Percent of error = 8%

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The monthly payment on the car is approximately $640.62. The correct option is A

The formula for the monthly payment on a continuously compounded loan can be expressed as:

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

Where

Plugging in the given values, we get:

P = (0.046 * 35000) / (1 - (1 + 0.046/12)^(-6*12))

P ≈ $640.62

Therefore, the monthly payment on the car is approximately $640.62.

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Hence, the correct option is C.

An equation is a mathematical statement that shows the equality between two expressions.

1. Twice the sum of four and a number can be written as 2(4 + x), where x is the number.

2. The sum of a number and 32 can be written as x + 32, where x is the number.

3. Five is half of a number and 32 can be written as 5 = 0.5x + 32, where x is the number.

To see why, we can use the fact that "half of a number" can be written as 0.5x, so the sentence becomes 5 = 0.5x + 32 and hence become equation.

4.The quotient of 15 and a number can be written as 15/x, where x is the number.

Therefore, 5 = 0.5x + 32, which can be simplified to 0.5x = -27, and then to x = -54.

Hence, the correct option is C.

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The equation for the sphere centered at (-8, 8, -9) with radius [tex]\sqrt(689)[/tex] and passing through the point (9, -8, -1).

The equation for a sphere with center (a, b, c) and radius r is given by:

[tex](x - a)^2 + (y - b)^2 + (z - c)^2 = r^2[/tex]

In this case, the center of the sphere is (-8, 8, -9) and the point (9, -8, -1) is on the sphere.

Let's plug these values into the equation and solve for the radius:

[tex](9 - (-8))^2 + (-8 - 8)^2 + (-1 - (-9))^2 = r^2[/tex]

[tex](17)^2 + (-16)^2 + (8)^2 = r^2[/tex]

[tex]r^2 = 689[/tex]

Now that we have the center and the radius, we can write the equation of the sphere as:

[tex](x + 8)^2 + (y - 8)^2 + (z + 9)^2 = 689[/tex]

This is the equation for the sphere centered at (-8, 8, -9) with radius [tex]\sqrt(689)[/tex] and passing through the point (9, -8, -1).

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Measurement is closest to the length of the ramp in feet is 33 feet

Let AB = 26 ft and BC = 19.5 ft

Let AC be the length of the ramp

Let's use the Pythagorean theorem to find the length of the ramp:

AC² = AB² + BC²

where AC is the hypotenuse (the unknown side), and AB and BC are the other two sides given.

Substituting the given values, we get:

AC² = 26² + 19.5²

AC² = 676 + 380.25

AC² = 1056.25

AC = [tex]\sqrt{1056.25}[/tex]

AC = 32.5

Rounding to the nearest feet

AC = 33

Therefore, the measurement closest to the length of the ramp in feet is 33 feet.

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The equation of the circle graphed below is (x - 1)² + (y - 1)² = 4.

To determine the equation of a circle, we need to know the coordinates of its center and the radius. The general equation of a circle with center (h, k) and radius r is given by:

(x - h)² + (y - k)² = r²

where (x,y) are the coordinates of any point on the circle. The equation shows that the distance between any point (x,y) on the circle and the center (h,k) is always equal to the radius r.

To determine the equation of the circle graphed below, we need to identify the coordinates of its center and the radius. One way to do this is to use the distance formula between two points. We can choose any two points on the circle and use their coordinates to find the distance between them, which is equal to the diameter of the circle. Then, we can divide the diameter by 2 to find the radius.

To find the radius, we can choose any point on the circle and use the distance formula to find the distance between that point and the center. We can use the point (5,1), which is on the right side of the circle. The distance between (5,1) and (1,1) is 4 units, which means that the radius is 2 units.

Substituting the values of (h,k) and r in the general equation of the circle, we get:

(x - 1)² + (y - 1)² = 4

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The price of the old model is given by $22.289 and dimensions of the rectangle by 16units and 32 units.

Two dimensions make up a rectangle: the length and, perpendicular to that, the breadth. A triangle's or an oval's interior likewise has two dimensions. Despite the fact that we don't consider them to have "length" or "height," they do span a territory that is expansive in more than one way.

A circle can be measured in any direction. Why do we just consider it to be two dimensional? Because only one direction—the direction perpendicular to the first measurement—can be used to make a second measurement, for a total of two directions.

Let us assume that, price of the old model is Px .

so,

→ Price of 32" LED television = P(2x - 15.500)

A/q,

→ (2x - 15.500) = 29.078

→ 2x = 29.078 + 15.500

→ 2x = 44.578

→ x = $22.289

Therefore, price of the old model is $22.289.

Let us assume that, width of the rectangle is x unit.

so,

→ Length = twice of width = 2x = 2x unit .

then,

→ Perimeter = 2(Length + width)

A/q,

→ 2(2x + x) = 96

→ 3x = 48

→ x = 16 unit .

therefore,

Width of rectangle = x = 16 units .

Length of rectangle = 2x = 32 units.

Hence, the dimensions of the rectangle are 16units and 32 units.

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The price of the old televison is P22,289

The dimensions of the rectangle are 16 and 32

We have to read the problem carefully so as to be able to know how to translate the problem effectively and that is what we are going to do below.

We know that;

Let the price of the old 32'' LED television be x

Now;

29,078. 00 = 2x - 15,500

29,078. 00 + 15,500 = 2x

x = 29,078. 00 + 15,500 /2

x = P22,289

ii) Given that;

l = 2w

Perimeter = 2(l +w)

P = 2(2w + w)

P = 2(3w)

P = 6w

w = 96/6

w = 16

Then l = 2(w) = 32

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To find the number of unique types of sneakers, we need to multiply the number of options for each characteristic:

Number of colors: 6

Number of styles: 4

Number of fabrics: 3

Total number of unique types of sneakers = 6 x 4 x 3 = 72

Therefore, the manufacturer makes 72 unique types of sneakers.

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Answer is original amount paid to the transportation company was $800.

Let's work backwards from the final amount of $400 to find the original amount paid to the transportation company.

First, we know that percentage given is 80% of what was left after wages went towards supplies. So, if $400 was left after wages were paid, then:

0.8(400) = $320 went towards supplies.

Next, we know that 60% of the original amount went towards wages. So, if $320 went towards supplies, then the remaining amount that went towards wages was:

0.4(original amount) = $320

Solving for the original amount:

Original amount = $320 / 0.4 = $800

Therefore, the original amount paid to the transportation company was $800.

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The researcher can be 95% confident that the mean number of hours all the residents of the city are watching news on television is between 1.7538 and 1.8462 hours, with a margin of error of 0.0462 hours.

Based on the information provided, the researcher surveyed 220 residents of the city and found that the mean number of hours they spend watching news on television each day is 1.8, with a standard deviation of 0.35.

The researcher wants to know the margin of error at a 95% confidence level for the mean number of hours all residents of the city are watching news on television.

To calculate the margin of error, we need to use the formula:
Margin of error = Critical value x Standard error

The critical value for a 95% confidence level is 1.96, and the standard error can be calculated as:
Standard error = Standard deviation /square root of sample space

Substituting the values given:
Standard error = 0.35 / sqrt(220) = 0.0236

Therefore, the margin of error can be calculated as:
Margin of error = 1.96 x 0.0236 = 0.0462

So, the researcher can be 95% confident that the mean number of hours all the residents of the city are watching news on television is between 1.7538 and 1.8462 hours, with a margin of error of 0.0462 hours.

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Answer:

(1/6)π(4^2) - (1/2)(2√3)(4)

= 8π/3 - 4√3 = about 1.4

The value of the book after 11 years is $101.38. Therefore, the correct option is C.

Find the value of the book after 11 years with an initial value of $258 and a decrease rate of 8% per year as follows.

1. Convert the percentage decrease to a decimal by dividing it by 100:

8% / 100 = 0.08

2. Subtract the decimal from 1 to represent the remaining value each year:

1 - 0.08 = 0.92

3. Raise the remaining value (0.92) to the power of the number of years (11):

0.92^11 ≈ 0.39197

4. Multiply the initial value of the book ($258) by the calculated remaining value (0.39197):

$258 × 0.39197 ≈ $101.07

Therefore, after 11 years, the value of the book is approximately $101.07, which is closest to option C, $101.38.

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If a scale dilates a two-dimensional object by a factor of 2/3, it means that the image of the object will be reduced by a factor of 2/3. In other words, the length and width of the image will be 2/3 of the length and width of the original object.

For instance, consider a rectangle with length L and width W. If we dilate this rectangle by a factor of 2/3, the new length and width of the rectangle will be (2/3)L and (2/3)W, respectively. The area of the new rectangle will be (2/3)L x (2/3)W = (4/9)LW, which is 4/9 of the original area. This means that the image is smaller than the original rectangle, and this type of dilation is called a reduction.

Dilations can be used in different applications of mathematics, such as geometry, trigonometry, and algebra. They are useful for changing the scale or size of an object in a proportional way, without altering its basic shape or characteristics.

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Step-by-step explanation:

5 + 6 + 3   = 14 marbles     5 are red

1st marble red =  5 out of 14   = 5/14

 now there are 13 marbles   4 are red

     2nd marble red             4/13

         and finally ,  3rd marble red = 3/12

5/14  * 4/13  * 3/12 =   5/182  chance for three reds

The minimum value of the function is -13 and the minimum value of the function occurs at the point (4, -13).

The function F(x) is a quadratic function with a negative coefficient of the squared term.

Therefore, the function has a maximum value.

To find the maximum value, we need to find the vertex of the parabola.

The x-coordinate of the vertex is given by x = -b/2a, where a and b are the coefficients of the x² and x terms respectively.

In this case, a = -1 and b = -8, so x = -(-8)/(2(-1)) = 4.

To find the minimum value, we substitute this x-value into the function to get F(4) = -(4²) - 8(4) + 19 = -13.

Therefore, the minimum value of the function is -13.

We found in part (1) that the x-coordinate of the vertex is x = 4.

To find the y-coordinate, we substitute this x-value into the function to get F(4) = -13.

Therefore, the minimum value of the function occurs at the point (4, -13).

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The coordinates of point P on the directed line segment AB, which divides AB in the ratio 1:3, are (5, 6.5).

To find the coordinates of the point P on the directed line segment AB that partitions AB in the ratio 1:3, we can use the concept of section formula.

Let's assume the coordinates of point P are (x, y). According to the section formula, the coordinates of P can be calculated as follows:

x = (3x2 + 1x1) / (3+1) = (37 + 1(-1)) / 4 = (21 - 1) / 4 = 20/4 = 5

y = (3y2 + 1y1) / (3+1) = (38 + 12) / 4 = (24 + 2) / 4 = 26/4 = 13/2 = 6.5

Therefore, the coordinates of point P on the directed line segment AB, which divides AB in the ratio 1:3, are (5, 6.5).

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Answer: I agree the answer is 3

Step-by-step explanation:

Brainliest pls:)

Purab initially had 17 rose plants in his lawn before buying the new ones.

Purab initially had a certain number of rose plants in his lawn. He bought twice that number, but had to discard 3 plants as they turned bad

After planting the new ones, there were a total of 48 plants in the garden.

To determine how many plants he had earlier, let's use a variable x to represent the initial number of plants.

Purab bought 2x plants, and after removing the 3 bad plants, he had (2x - 3) good plants.

Adding these to the initial number of plants, the equation becomes:

x + (2x - 3) = 48

Combining like terms, we get:

3x - 3 = 48

Next, we add 3 to both sides:

3x = 51

Finally, we divide by 3: x = 17

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Answer:

side length of cube=4inch

Step-by-step explanation:

volume of cube(V)=64sqinch

length of side(l)=?

Now,

volume of cube(V)=l^3

64=l^3

∛64=l

4=l

l=4inch

The total students that were there in the third period is equal to 35

Let the total students be x

we have x (1 - 80%) = 7

Such that we would have

x * 0.20 = 7

then 0.20x = 7

Divide through the equation above by 0.20

x = 7 / 0.20

x = 35

Therefore the total students that were there in thev third period is equal to 35

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Mrs. Lane's average gross monthly income would be $3,135.

To find the monthly income of  Mrs. Lane's,

First, we need to find Mrs. Lane's commission for her bi-weekly commercial sales:

Commission = 22% of $5,625 = 0.22 x $5,625 = $1,237.50

Next, we need to find her hourly wage for a week:

Hourly wage = $8.25 x 40 = $330

Her gross bi-weekly income is the sum of her commission and hourly wage:

Gross bi-weekly income = Commission + Hourly wage

= $1,237.50 + $330

= $1,567.50

To find her gross monthly income, we can multiply her gross bi-weekly income by the number of bi-weekly pay periods in a month:

Gross monthly income = Gross bi-weekly income x Number of bi-weekly pay periods in a month

= $1,567.50 x 2

= $3,135

Therefore, Mrs. Lane's average gross monthly income would be $3,135.

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The most appropriate decision for the company is to build a large supermarket and expand if demand turns out to be favorable.

Here is a decision tree for the given problem:

```

                Build Medium

                 /      \

       Average /        \ Favorable

              /          \

     NPV = $600K        Expand

                        /      \

              NPV = $330K  NPV = $610K

              75%            25%

                \          /

               Favorable / Unfavorable

                        /

                  NPV = $623K

                        \

                      High

                        \

                     NPV = $650K

                        /

           Stimulate / Not Stimulate

                  /       \

         Favorable / Unfavorable

                /           \

           NPV = $320K     NPV = -$20K

```

To determine the most appropriate decision, we will use the expected value approach. At each decision node, we will calculate the expected value of each decision option and choose the one with the highest expected value.

Starting from the top, the expected value of building a medium size supermarket is:

Expected value = (0.35 x $600K) + (0.65 x $623K) = $615,250

The expected value of building a large supermarket and not stimulating demand if it turns out to be average is:

Expected value = (0.35 x $100K) + (0.65 x $623K) = $403,250

The expected value of building a large supermarket and stimulating demand if it turns out to be average is:

Expected value = (0.35 x 0.2 x -$20K) + (0.35 x 0.8 x $320K) + (0.65 x $623K) = $394,850

The expected value of building a large supermarket and expanding if it turns out to be favorable is:

Expected value = (0.65 x 0.75 x $330K) + (0.65 x 0.25 x $610K) + (0.35 x $623K) = $473,125

The expected value of building a large supermarket if it turns out to be high is:

Expected value = $650K

Comparing all the expected values, we see that building a large supermarket and expanding if demand turns out to be favorable has the highest expected value of $473,125. Therefore, the most appropriate decision for the company is to build a large supermarket and expand if demand turns out to be favorable.

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