The results of an analysis, on the makeup of garbage, done by the Environmental Protection Agency was published in
1990. Some of the results are given in the following table, which for various years gives the number of pounds per
person per day of various types of waste materials.
Waste materials
Glass
Plastics
Metals
Paper
1960
0.20
0.01
0.32
0.91
1970
0.34
0.08
0.38
1.19
1980
0.36
0.19
0.35
1.32
1988
0.28
0.32
0.34
1.60
For metal, calculate the average rate of change between 1980 and 1988. Then interpret what this value means.

a. From 1980 to 1988, the number of pounds of c. From 1980 to 1988, the number of pounds of
metal per person per day decreased by
metal per person per day decreased by
0.125 per year.
0.00125 per year.
b. From 1980 to 1988, the number of pounds d. From 1980 to 1988, the number of pounds
of metal per person per day decreased by
0.071 per year.
of metal per person per day increased by
0.01 per year.

Answer:

The equation of a hyperbola with co-vertices at (0, 7) and (0, -7) and a transverse axis that is 12 units long is:

x²/36 - y²/49 = 1.

Therefore, the correct equation is: x²/36 - y²/49 = 1.

Answer:

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

Angles ABD and DBC form a linear pair, hence their sum is 180°.

Set up an equation and solve for x:

Substitute 40.5 for x and find the measure of ∠DBC:

Answer:

Fractions are like pancakes: you can flatten them horizontally or vertically. Horizontal flattening means you shrink the x-value by multiplying it by a huge number before doing anything else. Vertical flattening means you squish the y-value by multiplying the whole function by a tiny number. For example, if f (x) = x^2, then f (2x) is horizontally flattened by 2 and f (0.5x^2) is vertically flattened by 0.5. Don't worry, it's not rocket science, it's just math.

The difference quotient of the function f(x) = 12x + 1 is 12.

The difference quotient of a function measures the average rate of change of the function between two points. To find the difference quotient of the function f(x) = 12x + 1, we can follow these steps:

Select two points on the function, let's call them x and x + h, where h is a small positive value.

Evaluate the function at those two points to get the corresponding y-values. For f(x) = 12x + 1, we have:

f(x) = 12x + 1

f(x + h) = 12(x + h) + 1

Calculate the difference quotient by subtracting the values and dividing by h:

[f(x + h) - f(x)] / h

= [(12(x + h) + 1) - (12x + 1)] / h

= [12x + 12h + 1 - 12x - 1] / h

= (12h) / h

= 12

In this case, since the function is linear with a slope of 12, the difference quotient is constant and equal to the slope of the function. This means that for every unit increase in x, the function f(x) increases by 12.

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Answer:

None of the given options (A, B, C, D) match the correct investment amount.

Explaination:

A = P * e^(rt),

where:

A = the future amount (in this case, $34,000),

P = the principal amount (the initial investment),

e = Euler's number (approximately 2.71828),

r = the interest rate (2.9% expressed as a decimal, so 0.029),

t = the time period (18 years).

We can rearrange the formula to solve for P:

P = A / e^(rt).

Now we can plug in the given values and calculate the investment amount:

P = $34,000 / e^(0.029 * 18).

Using a calculator, we can evaluate e^(0.029 * 18) and divide $34,000 by the result to find the investment amount.

Calculating e^(0.029 * 18) gives us approximately 1.604.

P = $34,000 / 1.604 ≈ $21,179.55

The solutions of the system of equations are (2, -1) and (-4, 17)

The given system of equations is:

y = x² - x - 3

y = -3x + 5

To find the solutions, we need to solve these equations simultaneously.

Set the equations equal to each other:

x² - x - 3 = -3x + 5

Simplify and rewrite the equation in standard form:

x² - x + 3x - 3 - 5 = 0

x² + 2x - 8 = 0

Factor the quadratic equation:

(x - 2)(x + 4) = 0

Now we can solve for x by setting each factor equal to zero:

x - 2 = 0 or x + 4 = 0

Solving for x, we get:

x = 2 or x = -4

To find the corresponding y-values, we substitute these x-values into either of the original equations. Let's use equation 1):

For x = 2:

y = (2)² - 2 - 3 = 4 - 2 - 3 = -1

For x = -4:

y = (-4)² - (-4) - 3 = 16 + 4 - 3 = 17

As a result, the system of equations has two solutions: (2, -1) and (-4, 17).

The right responses are therefore (2, -1) and (-4, 17).

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The approximate solution to the equation 1/x-1 = |x-2| after three iterations of successive approximation is x ≈ 5/2 or x ≈ 2.5.

To solve the equation 1/x-1 = |x-2| using three iterations of successive approximation, we will start with an initial guess and refine it using an iterative process.

Given that the equation involves absolute value, we will consider two cases:

Case 1: x - 2 ≥ 0

In this case, |x-2| simplifies to x-2, and the equation becomes 1/(x-1) = x-2.

Case 2: x - 2 < 0

In this case, |x-2| simplifies to -(x-2), and the equation becomes 1/(x-1) = -(x-2).

Now, let's perform the successive approximation:

Iteration 1:

Let's start with an initial guess, x = 2.

Case 1: When x - 2 ≥ 0,

1/(2-1) = 2-2,

1/1 = 0,

which is not true.

Case 2: When x - 2 < 0,

1/(2-1) = -(2-2),

1/1 = 0,

which is not true.

Since our initial guess did not satisfy the equation in either case, we need to choose a different initial guess.

Iteration 2:

Let's try x = 3.

Case 1: When x - 2 ≥ 0,

1/(3-1) = 3-2,

1/2 = 1,

which is not true.

Case 2: When x - 2 < 0,

1/(3-1) = -(3-2),

1/2 = -1,

which is not true.

Again, our guess did not satisfy the equation in either case.

Iteration 3:

Let's try x = 2.5.

Case 1: When x - 2 ≥ 0,

1/(2.5-1) = 2.5-2,

1/1.5 = 0.5,

which is true.

Case 2: When x - 2 < 0,

1/(2.5-1) = -(2.5-2),

1/1.5 = -0.5,

which is not true.

Our guess of x = 2.5 satisfies the equation in Case 1.

Therefore, the approximate solution to the equation 1/x-1 = |x-2| after three iterations of successive approximation is x ≈ 5/2 or x ≈ 2.5.

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The equation of the new function after shifting 6 units right and 4 units down is f(x) = (x + 6)² - 4.

If we are to apply the changes below to the quadratic parent function, F(x) = x², what is the equation of the new function, given that we are to shift 6 units to the right and 4 units down? We will approach this question by following the steps outlined below.

Step 1: Identify the parent function F(x) = x² and its transformations

Step 2: Write the equation of the new function

Step 3: Simplify the new equation of the function.Step 1: Identify the parent function F(x) = x² and its transformations

Here, we are given the quadratic parent function F(x) = x² and two transformations: shift 6 units right and shift 4 units down.

The general equation for the horizontal and vertical shifts of a quadratic function is given by:f(x) = a(x - h)² + k, where a, h, and k are constants.

The value of a determines the direction of opening of the parabola, while (h, k) represents the vertex of the parabola.

If a > 0, the parabola opens upwards, while a < 0, the parabola opens downwards. If the values of (h, k) are positive, the parabola is shifted right and up, respectively. On the other hand, if the values of (h, k) are negative, the parabola is shifted left and down, respectively.

Therefore, given the quadratic parent function F(x) = x² and two transformations: shift 6 units right and shift 4 units down, we can represent these changes by the following:

a = 1 (since the parabola opens upwards)h = -6 (since we are shifting the parabola 6 units to the right)k = -4 (since we are shifting the parabola 4 units down)

Step 2: Write the equation of the new function Now that we have identified the constants a, h, and k, we can write the equation of the new function as follows:f(x) = a(x - h)² + kf(x) = 1(x - (-6))² + (-4)Replacing the constants a, h, and k in the equation, we have:f(x) = (x + 6)² - 4

Step 3: Simplify the new equation of the function.f(x) = (x + 6)² - 4= (x + 6)(x + 6) - 4= x² + 12x + 36 - 4= x² + 12x + 32Therefore, the equation of the new function after shifting 6 units right and 4 units down is f(x) = x² + 12x + 32.

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Answer:

x=30 degrees, 2x=60 degrees, 3x=90 degrees

Step-by-step explanation:

in a triangle the sum of angles is 180 so

x+2x+3x=180

6x=180

x=180/6

x=30

so the angle x is 30 degrees, the angle that is 2x is 60 degrees and the angle the angle 3x is 90

Answer:

7

Step-by-step explanation:

In an 30-60-90 right triangle, the longer leg is the shorter leg multiplied by [tex]\sqrt{3}[/tex]

So [tex]7\sqrt{3} =x*\sqrt{3[/tex]

[tex]7=x[/tex]

x=7

Answer:

A. 21

Step-by-step explanation:

This is a 30-60-90 triangle, where you have one 30° angle, one 60°, and one 90° (aka right) angle.  

The sides of a 30-60-90 triangle adhere to the following rules:

Since 7√3 is the length of the side opposite the 30° angle, the entire expression represents x.

Since the length of the side opposite the 60° angle is given by x * √3, the length of this side is (7√3)(√3).

Simplifying gives us 7*3, which is 21.

Thus, the value of x in the triangle is 21 (answer choice A.)

The surface area of the given triangle is approximately 33.74 square centimeters.

To calculate the surface area of a triangle, we need the lengths of two sides and the included angle between them. However, in this case, you provided the lengths of all three sides (6 cm, 7 cm, and 12 cm).

To determine the surface area, we can use Heron's formula, which is applicable to triangles with all three side lengths known.

Heron's formula states that the surface area (A) of a triangle with side lengths a, b, and c is given by:

[tex]A = \sqrt(s \times (s - a) \times (s - b) \times (s - c))[/tex]

where s is the semi perimeter of the triangle, calculated as:

s = (a + b + c) / 2

Plugging in the given side lengths, we have:

s = (6 cm + 7 cm + 12 cm) / 2 = 25 / 2 = 12.5 cm

Now we can substitute the values into Heron's formula:

[tex]A = \sqrt(12.5 cm \times (12.5 cm - 6 cm) \times (12.5 cm - 7 cm) \times (12.5 cm - 12 cm))[/tex]

[tex]= \sqrt(12.5 cm \times 6.5 cm \times 5.5 cm \times 0.5 cm)[/tex]

= √(1137.5 cm^4)

≈ 33.74 cm^2

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Answer:

What is the base, height? Is it a right triangle?

Answer:

x = 11.62

Step-by-step explanation:

opp / adj would be tangent, so the equation would be 4*tan(71) giving us 11.616, and rounding to the nearest hundredth gives you 11.62

Hope this helps :)

The given number 132 from base 6 to base 10 by expanding its digits using powers of 6. The number 132 in base 6 is equal to 211 in base 5.

To express the number 132 in base 6 as a number in base 5, we need to convert the given number from base 6 to base 10 and then from base 10 to base 5.

In base 6, the digits range from 0 to 5. The positional values of the digits increase from right to left by powers of 6. Let's break down the given number 132 in base 6:

1 * 6^2 + 3 * 6^1 + 2 * 6^0

= 1 * 36 + 3 * 6 + 2 * 1

= 36 + 18 + 2

= 56 in base 10

Now, we have the number 56 in base 10. To convert it to base 5, we divide the number by 5 and record the remainders from right to left until the quotient becomes 0.

56 divided by 5 is 11 with a remainder of 1.

11 divided by 5 is 2 with a remainder of 1.

2 divided by 5 is 0 with a remainder of 2.

The remainders in reverse order give us 211 in base 5.

Therefore, the number 132 in base 6 is equal to 211 in base 5.

In summary, we converted the given number 132 from base 6 to base 10 by expanding its digits using powers of 6. Then, we divided the resulting number in base 10 by 5 to obtain the equivalent number in base 5 by recording the remainders. The final result is 211 in base 5.

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Answer:

11? I'm so sorry if it's incorrect. I apologize.

The correct statements are: B. Circle F and circle D are similar and D. The center of circle F is (0, 3).

Explanation:

A. The radius of circle F is not 28. When a circle is translated, the radius remains the same. So, circle F has the same radius as circle D, which is 7.

B. Circle F and circle D are similar. Similarity means that the two shapes have the same shape but possibly different sizes. Since circle F is a translation of circle D, it has the same shape and proportions as circle D. Therefore, they are similar.

C. Circle F and circle D are not congruent. Congruence means that two shapes are identical in both shape and size. While circle F and circle D have the same shape, they have different positions due to the translation. Thus, they are not congruent.

D. The center of circle F is (0, 3). When a circle is translated horizontally by a certain amount, the x-coordinate of the center changes, while the y-coordinate remains the same. Since circle F is translated 2 units to the right, the x-coordinate of the center of circle F would be 2 + 0 = 2. As the y-coordinate remains the same, the center of circle F is (2, 3). Therefore, the statement is incorrect.

In summary, the correct statements are B and D. Circle F and circle D are similar, and the center of circle F is (0, 3). Therefore, Option B and D are correct.

The question was incomplete. find the full content below:

According to these three facts, which statements are true?

• Circle D has center (2, 3) and radius 7.

• Circle F is a translation of circle D, 2 units right.

• Circle F is a dilation of circle D with a scale factor of 4.

Select each correct answer.

A. The radius of circle F is 28.

B. Circle F and circle D are similar.

C. Circle F and circle D are congruent.

D. The center of circle F is (0, 3)

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Answer:

Independent

Step-by-step explanation:

Flipping a coin is independent of each flip.

Answer:

Independent

Step-by-step explanation:

The flipping of two coins are an independent event. The reason for this is that one coin flip does not affect the outcome of the other flip. An example of a dependent event would be coat sales and weather, as cold weather would affect the amount of coats sold.

If this answer helped you, please leave a thanks!

Have a GREAT day!!!

In a Production Possibility Curve (PPC) with product output Y on the vertical axis and product output X on the horizontal axis the following points are described as follows.

- Point Q represents an unemployment rate of 100 percent. It is located at the origin, where both axes intersect, indicating no product output due to complete unemployment.

- Point R signifies full employment and is located at the maximum product output on the X-axis, showing the economy's capacity when all resources are fully utilized.

- Point S indicates where the US economy typically operates, within the usual range of product output levels on the X-axis, reflecting a balanced unemployment rate that includes frictional and structural unemployment.

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Based on the average scores and standard deviations, it appears that Millman's group still has room for improvement before they can reach the level of professional golfers.

To determine whether Millman's golfing group is ready to turn pro, we can compare their performance to that of professional golfers. Based on the provided data, Millman's group consists of 9 amateurs with an average score of 82 and a standard deviation of 2.6.

On the other hand, the professional golfers consist of 500 individuals with an average score of 71 and a standard deviation of 3.1.

To make a meaningful comparison, we can look at the average scores of the two groups. The average score is an indicator of the overall performance, with lower scores being better in golf.

In this case, the professional golfers have an average score of 71, while Millman's group has an average score of 82. This suggests that the professional golfers perform better, on average, than Millman's group.

However, it is also essential to consider the standard deviation, which measures the variability of scores within each group. A smaller standard deviation indicates less variation and greater consistency in performance.

The professional golfers have a standard deviation of 3.1, while Millman's group has a standard deviation of 2.6. This suggests that Millman's group has slightly less variation in scores compared to the professional golfers.

Overall, based on the average scores and standard deviations, it appears that Millman's group still has room for improvement before they can reach the level of professional golfers.

The professional golfers demonstrate better performance, on average, and a slightly higher variability in scores compared to Millman's group. Therefore, it would be advisable for Millman's group to continue refining their skills and striving to improve their scores before considering turning pro.

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A sequence of transformations that maps quadrilateral MATH onto quadrilateral M"A"T"H" is a rotation of 180° about the origin and a translation by 1 unit left and 1 unit up.

In Mathematics and Geometry, the rotation of a point 180° about the origin in a clockwise or counterclockwise direction would produce a point that has these coordinates (-x, -y).

Additionally, the mapping rule for the rotation of a geometric figure 180° counterclockwise about the origin is given by this mathematical expression:

(x, y)                                            →            (-x, -y)

Coordinates of point M (2, 4)  →  Coordinates of point M' = (-2, -4)

By applying a translation to the image (M') vertically upward by 1 unit and horizontally left by 1 unit, the new coordinate M" of quadrilateral M"A"T"H" include the following:

(x, y)                               →                  (x - 1, y + 1)

M' (-2, -4)                        →                  (-2 - 1, -4 + 1) = M" (-3, -3)

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When [tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], the value of [tex]cos(\theta)[/tex] is approximately 0.9071.

To find the value of cos([tex]\theta[/tex]) given[tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], we can use the trigonometric identity:

[tex]sin^2(\theta) + cos^2(\theta) = 1[/tex]

Since we are given sin(theta) = -0.42, we can substitute this value into the equation:

[tex](-0.42)^2 + cos^2(\theta) = 1[/tex]

Simplifying:

[tex]0.1764 + cos^2(\theta) = 1[/tex]

Subtracting 0.1764 from both sides:

[tex]cos^2(\theta) = 0.8236[/tex]

Taking the square root of both sides (since cos(theta) is positive):

[tex]cos(\theta) = \sqrt{(0.8236)} \\cos(\theta) = 0.9071[/tex]

Therefore, when [tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], the value of [tex]cos(\theta)[/tex]is approximately 0.9071.

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The statement that is correct option d: The spread of the number of activities for Class N is less than for Class M.

The term 'spread' in mathematics refers to the difference between the largest and smallest values in a dataset or the range of the data. It's the extent to which the dataset is spread out.The median is the center of a dataset. It's the number that lies in the middle of the sorted values. Half the values are greater than the median, while the other half are lesser than the median.

An outlier is a value that is very different from the other values in the dataset.In class M, there are no outliers. The distribution is skewed to the right since most students have only a few activities, and some have many. The median is between 2 and 3.

In class N, there are no outliers. Most students have a moderate number of activities, and the spread is less than in Class M. The median is between 5 and 6.Hence, the correct statement is The spread of the number of activities for Class N is less than for Class M.The correct answer is d

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The correct solutions to the quadratic equation are:

c. -8

e. 2

To determine the solutions to the quadratic equation 2x^2 + 6x - 10 = x^2 + 6, we need to solve for x.

First, let's simplify the equation by combining like terms:

2x^2 + 6x - 10 - x^2 - 6 = 0

x^2 + 6x - 16 = 0

Now, we can solve this quadratic equation by factoring or by using the quadratic formula.

By factoring:

(x + 8)(x - 2) = 0

Setting each factor equal to zero, we get:

x + 8 = 0 --> x = -8

x - 2 = 0 --> x = 2

So, the solutions to the quadratic equation are x = -8 and x = 2.

Now, let's check the given options:

a. -2: This value is not a solution to the equation.

b. 1/3: This value is not a solution to the equation.

c. -8: This value is a solution to the equation.

d. -1/2: This value is not a solution to the equation.

e. 2: This value is a solution to the equation.

f. 8: This value is not a solution to the equation.

The following are the proper answers to the quadratic equation: c. -8 e.2

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Jacob bought 0.7 yards of ribbon.

To find out how many yards of ribbon Jacob bought, we need to determine 4/5 of the length of ribbon that Cindy bought.

Cindy bought 7/8 yard of ribbon. To find 4/5 of this length, we multiply 7/8 by 4/5:

(7/8) * (4/5) = (7 * 4) / (8 * 5) = 28/40

To simplify the fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 4:

(28/4) / (40/4) = 7/10

Therefore, Jacob bought 7/10 yard of ribbon.

However, we can convert this fraction to a mixed number or decimal to express it in yards.

To convert 7/10 to a mixed number, we divide the numerator (7) by the denominator (10):

7 ÷ 10 = 0 with a remainder of 7

So, 7/10 is equivalent to 0 7/10 or 0.7 yards.

Therefore, Jacob bought 0.7 yards of ribbon.

In summary, Jacob bought 7/10 yard or 0.7 yards of ribbon.

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The probability that less than 10 out of 15 cash register receipts will show the three food items ordered is approximately 0.166.

To calculate the probability that less than 10 out of 15 cash register receipts show that the hamburger, french fries, and a drink were ordered, we can use the binomial probability formula. The formula for the probability of obtaining exactly k successes in n trials is:

P(X = k) = (nCk) * p^k * (1 - p)^(n - k)

where:

P(X = k) is the probability of obtaining k successes,

n is the number of trials,

p is the probability of success in a single trial, and

(nCk) is the binomial coefficient, which represents the number of ways to choose k successes out of n trials.

In this case, we want to find the probability of less than 10 out of 15 receipts showing the three food items ordered. We need to calculate the probabilities for k = 0, 1, 2, ..., 9, and sum them up.

Let's calculate the probabilities using the formula:

P(X < 10) = P(X = 0) + P(X = 1) + P(X = 2) + ... + P(X = 9)

where:

n = 15 (number of trials),

p = 0.60 (probability of success, i.e., ordering hamburger, french fries, and a drink).

Using a binomial calculator or a statistical software, we can calculate each individual probability and then sum them up.  The result will be the probability that less than 10 out of 15 receipts show the three food items ordered.

The probability that less than 10 out of 15 cash register receipts will show the three food items ordered is approximately 0.166.

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The correct answer is Screw option needs to be set to something greater than 0.

To get the vertical movement and create a helix-like shape using the screw modifier, Caroline needs to change the screw option to something greater than 0.

The screw option determines the amount of vertical displacement or height of the helix shape.

By setting the screw option to a value greater than 0, Caroline can control the vertical movement of the model as it spirals along the axis, resulting in a helix-like shape.

Therefore, the correct answer is:

Screw option needs to be set to something greater than 0.

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Answer: seconds

Step-by-step explanation:

Answer:

[tex]\frac{3}{7}[/tex] <  [tex]\frac{3}{5}[/tex]

Step-by-step explanation:

[tex]\frac{3}{7}[/tex] ? [tex]\frac{3}{5}[/tex]

We have to get both fractions with the same denominator to compare them.

[tex]\frac{3}{7}[/tex] = [tex]\frac{15}{35}[/tex]

[tex]\frac{3}{5}[/tex] = [tex]\frac{21}{35}[/tex]

[tex]\frac{15}{35} < \frac{21}{35}[/tex]

So, [tex]\frac{3}{7}[/tex] <  [tex]\frac{3}{5}[/tex]

Answer:

Step-by-step explanation:

To calculate the amount Aditi needs to pay, we need to apply the discounts step by step based on the given offer.

Step 1: 20% discount on all products

The marked price of the goods is Rs 2400. Applying a 20% discount means she will get a reduction of 20% of the marked price.

20% of Rs 2400 = (20/100) * Rs 2400 = Rs 480

After the first discount, the new bill amount is Rs 2400 - Rs 480 = Rs 1920.

Step 2: Additional 20% discount on the bill amount if it exceeds Rs 1000

The new bill amount after the first discount is Rs 1920. If this amount exceeds Rs 1000, Aditi will get a further discount of 20% on this bill amount.

Since Rs 1920 is greater than Rs 1000, we can apply a 20% discount to it.

20% of Rs 1920 = (20/100) * Rs 1920 = Rs 384

The final amount Aditi needs to pay after both discounts is Rs 1920 - Rs 384 = Rs 1536.

Therefore, Aditi needs to pay Rs 1536.

Answer:

21 - 12p

Step-by-step explanation:

I hope this helps and I'm super sorry if I'm wrong!