Abby has been keeping an eye on an emerald ring she likes. Its original price was $5,300, but it is now on clearance, marked down by 64%. What is the price of the ring now?

The area of the sector with angle 50 degrees is determined as 9.15 cm².

The radius of the circle is calculated as follows;

Area of sector = θ/360 x πr²

where;

Area of sector = θ/360 x πr²

56.87 =  310⁰/360  x  πr²

56.87 = 2.71r²

r² = 56.87/2.71

r² = 20.985

r = √(20.985)

r = 4.58 cm

The area of the minor arc is calculated as follows;

A = 50/360 x π(4.58)²

A = 9.15 cm²

Thus, the area of the minor arc is determined as 9.15 cm².

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Step-by-step explanation:

24 times, as there are no orange marbles in the set.

so, every pull will produce a marble that is not orange with 100% certainty.

in general, we have 12 marbles.

let's change the problem description into picking a marbles that is not blue.

we have 6 blue marbles.

the chance to pick a blue marble is therefore 6/12 = 1/2.

and the probability to not pick a blue marbles is 1 - 1/2 = 1/2.

so, in 24 pulls, we expect 24× 1/2 = 12 times to get a marble that is not blue.

or change it to "not green" marbles.

5 green marbles.

the probability to pick a green marble is 5/12.

the probabilty to not pick a green marble = 1 - 5/12 = 7/12.

in 24 pulls we expect 24 × 7/12 = 14 times to get a marble that is not green.

it change it to "not purple" marbles.

1 purple marble.

the probability to pick a purple marble is 1/12.

the probabilty to not pick a purple marble = 1 - 1/12 = 11/12.

in 24 pulls we expect 24 × 11/12 = 22 times to get a marble that is not purple.

The balance of the account after all the deposits is given as follows:

B = 800.25 + x + y + b.

The balance of an account refers to the amount of money that is currently in the account, taking into account all the transactions that have been made on the account, that is, adding all the money that has been deposited on the account.

Considering the initial balance of the account of b dollars, plus all the deposits listed on the problem, the expression is given as follows:

B = 750.25 + x + y + 100 + b

B = 800.25 + x + y + b.

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The pair of required complementary angles are 26.2° and 63.8° respectively.

Two angles are said to be supplementary angles because they combine to generate a linear angle when their sum is 180 degrees.

When two angles add up to 90 degrees, however, they are said to be complimentary angles and together they make a right angle.

If the total of two angles is 90o (ninety degrees), then the angles are complementary.

A 30-angle and a 60-angle, for instance, are two complementary angles.

So, to find the 2 angles which are complementary:

x + x + 37.6 = 90

Now, solve it as follows:

x + x + 37.6 = 90

2x = 90 - 37.6

2x = 52.4

x = 52.4/2

x = 26.2

Now, x = 26.2 and the second angle x + 37.6 is = 26.2 + 37.6 = 63.8°.

Therefore, the pair of required complementary angles are 26.2° and 63.8° respectively.

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Answer:

m = 4

Y-intercept: 2

Step-by-step explanation:

8x + 4 = 2y

We rewrite the equation in slope-intercept form y = mx + b

m = the slope

b = y-intercept

8x + 4 = 2y

-2y + 8x + 4 = 0

-2y = -8x - 4

y = 4x + 2

m = 4

Y-intercept: 2

Rewriting the equation in slope-intercept form (y = mx + b) makes it easier to tell the slope and y-intercept. The rewritten form is y = 4x + 2. Since 'm' represents the slope, the slope of the equation is 4. 'b' represents the y-intercept, so the y-intercept is 2.

(a) The probability that this genetic disease can be present is that at least someone in the town is 2.8% of the total population.

To compute the possibility that at least one person in town has the sickness, we may first calculate the probability that no one in town has the disease and then deduct that from 1. The probability that no one in the town has the disease is calculated by binomial distribution formula.

P(X ≥ 1) = 1 - P(X = 0)

where X is the number of people in the town with the disease.

P(X = 0) is the probability that nobody in the town has the disease. When we calculate P(X = 0) as:

P(X = 0) = (15000 chooses 0) * (1/5000)⁰ * (4999/5000)¹⁵⁰⁰⁰

P(0) ≈0.972

The probability that at least one person in the town has the disease is:

P(X ≥ 1) = 1 - P(X = 0)

≈ 1 - 0.972

P(X ≥ 1)  ≈ 0.028

As a result, there is a 2.8% probability that at least one person in town has the condition.

(b) The probability that this genetic disease can be present is that at most 2 people in the town is 99.9% of the total population.

To compute the probability that no more than two persons in the town have the sickness, we must sum the probabilities of none, one, and two people having the condition. The binomial distribution gives the chance that precisely x persons have the disease:

P(x) = (n choose x) * pˣ * (1-p)ⁿ⁻ˣ

where n is the sample size (15,000)

p is the illness probability (1/5000)

(n pick x) is the binomial coefficient, which is the number of ways to select x items from a collection of n items.

We can calculate using this formula:

P(0) = (15000 choose 0) * (1/5000)⁰ * (4999/5000)¹⁵⁰⁰⁰

P(0) ≈ 0.972

P(1) = (15000 choose 1) * (1/5000)¹ * (4999/5000)¹⁴⁹⁹⁹

P(1) ≈ 0.027

P(2) = (15000 choose 2) * (1/5000)² * (4999/5000)¹⁴⁹⁹⁸

P(2) ≈ 0.001

So the probability of at most 2 people in the town having the disease is:

P(0) + P(1) + P(2) ≈ 0.999

As a result, there is a 99.9%  probability that at most 2 people in the town have the disease.

(c) The expected number of people in the town who have the disease is 3 among the 15000 people.

The mean of the binomial distribution gives the expected amount of persons in the town who have the disease.

E(X) = n*p

where X is the random variable representing the number of people in the town with the disease.

Substituting n = 15,000 and p = 1/5000, we get:

E(X) = 15,000 * (1/5000) = 3

E(X) = 3

So we would expect about 3 people in the town to have the disease among the total population.

(d) The variance for the number of people in the town with the disease is 2.998 among the total population.

The binomial distribution's variance is given by:

Var(X) = n*p*(1-p)

considering n = 15,000 and p = 1/5000, we get:

Var(X) = 15,000 * (1/5000) * (4999/5000)

Var(X)  ≈ 2.998

So the variation in the number of persons in the town infected with the illness is around 2.998.

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The measures of central tendency are

Mode, Median, μ

The measures of spread are;

Range, IQR

Neither of the measures are;

MAD, Outliers

Central tendency is defined as a central or typical value for a probability distribution. These measures of central tendency are often called averages.

The common measures of central tendency are the arithmetic mean, the median, and the mode.

The measures of spread simply describes how similar or varied the set of observed values are for a particular variable (data item).

Measures of spread include the range, quartiles and the interquartile range, variance and standard deviation.

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The expression that is equal to (7b)c is option D, 7(bc).

The expression (7b)c means that 7b is being multiplied by c.

So, the expression that is equal to (7b)c is option D, 7(bc).

In the expression (7b)c, 7b is being multiplied by c.

To simplify this expression, we can use the associative property of multiplication, which states that the way we group the factors does not affect the result of the multiplication.

Therefore, we can write (7b)c as 7(bc), which shows that 7 is being multiplied by the product of b and c.

This is represented by option D, 7(bc). The other options do not represent the correct multiplication of 7b and c.

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The greatest number of 27-inch pieces that she can cut from three pieces of ribbon is found to be 19. So, option B is the correct answer choice.

Each yard is equal to 36 inches, so 5 yards are equal to 180 inches. Therefore, each piece of ribbon is 180 inches long.

To find out how many 27-inch pieces Lucia can cut from each piece of ribbon, we divide 180 by 27.

180/27 = 6.67

Since Lucia can only cut whole pieces, she can cut 6 pieces of ribbon from each piece of ribbon.

Therefore, she can cut a total of 6 x 3 = 18 pieces of ribbon from the three separate pieces of ribbon.

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The probability that the weight of a randomly selected newborn baby boy born at the local hospital will be greater than 2620 grams is 0.9099 (rounded to four decimal places).

The probability can be calculated using the standard normal distribution as follows:

P(Z > (2620 - 3245) / 625) = P(Z > -1.335)

Using a standard normal distribution table, we find that the probability of Z being greater than -1.335 is 0.9099.

We use the standard normal distribution because we know the mean and standard deviation of the population of newborn baby boys' weights. We convert the raw score of 2620 grams to a z-score, which tells us how many standard deviations the raw score is away from the mean.

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Carlos is 5 years old.

The quadratic formula is a mathematical formula used to find the solutions (or roots) of a quadratic equation of the form ax² + bx + c = 0, where a, b, and c are coefficients and x is the variable. The formula is:

x = (-b ± √(b²- 4ac)) / 2a

Let's assume that Adriel's age is x. Then, Carlos's age would be x+2 (since they are consecutive odd integers and Carlos is older).

According to the problem, the product of their ages is 15. So we can set up the equation:

x(x+2) = 15

Expanding the left side of the equation, we get:

x² + 2x = 15

Subtracting 15 from both sides, we get:

x² + 2x - 15 = 0

Now we can solve for x using the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a

In this case, a = 1, b = 2, and c = -15. Substituting these values, we get:

x = (-2 ± √(2²- 4(1)(-15))) / 2(1)

x = (-2 ± √64) / 2

x = (-2 ± 8) / 2

x = -5 or x = 3

Since Adriel's age cannot be negative, we can discard the first solution. Therefore, Adriel's age is 3, and Carlos's age is x+2 = 5. So Carlos is 5 years old.

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The graph of the given function f(x) = -2 is as attached .

The general formula for the equation of a line in slope intercept form is:

y = mx + c

where:

m is slope

c is y-intercept

We are given the function as:

f(x) = -2

Thus, this means that the graph will be a straight horizontal line cutting across the point -2 on the y-axis which is indicated in the graph attached

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To calculate the probability of selecting a boy or a red-haired person as a homeroom representative to student council, we need to find the probability of each event and then use the formula P(A or B) = P(A) + P(B) - P(A and B).

There are 31 students in total (16 girls + 15 boys). The probability of selecting a boy is 15/31.

There are 5 red-haired students (3 girls + 2 boys). The probability of selecting a red-haired person is 5/31.

However, we need to account for the overlap between boys and red-haired students. There are 2 red-haired boys, so the probability of selecting a red-haired boy is 2/31.

Now we can use the formula: P(boy or red-haired) = P(boy) + P(red-haired) - P(boy and red-haired) = (15/31) + (5/31) - (2/31) = 18/31.

So, the probability of selecting a boy or a red-haired person as a homeroom representative to student council is 18/31.

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Answer: the 90% confidence interval for the mean number of tongue flicks per 20 minutes for all juvenile common lizards is (369.4, 588.6).

Step-by-step explanation:

Answer:

To find the average rate of change of the function f(x) = 1.5x² over the interval [10, 11], we need to calculate the change in f(x) over the interval, and divide by the change in x.

The change in f(x) over the interval [10, 11] is:

f(11) - f(10) = (1.511^2) - (1.510^2) = 165 - 150 = 15

The change in x over the interval [10, 11] is:

11 - 10 = 1

Therefore, the average rate of change of the function over the interval [10, 11] is:

(15/1) = 15

This means that for every 1 cm increase in diameter (i.e., for every 1 unit increase in x), the number of calories in the pancake increases by an average of 15 calories per cm of diameter.

Therefore, the answer is (A) 150 calories per cm of diameter.

If p is a prime number and a is a positive integer, then pa has (a+1) distinct positive divisors.

A prime number is a positive integer greater than 1, which is divisible only by 1 and itself. Divisors are the numbers that evenly divide a given number.

For a prime number p raised to the power of a (p^a), the number of distinct positive divisors can be found using the following formula:

Number of divisors = (a + 1)

This is because each power of p from 0 to a can divide p^a without any remainder, giving us a total of a + 1 distinct divisors. These divisors are:

1, p, p^2, p^3, ..., p^(a-1), p^a

For example, if p = 2 (a prime number) and a = 3 (a positive integer), then the number of distinct positive divisors for 2^3 (which is 8) would be:

Number of divisors = (3 + 1) = 4

The divisors for 2^3 (8) are 1, 2, 4, and 8.

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If the area of the base is 19. 6 ft^2 and the height of the pyramid is 11. 6 ft, the volume of the pyramid is approximately 79.1 cubic feet.

The formula for the volume of a pyramid is given by:

V = (1/3) × base area × height

In this case, we are given that the pyramid has a square base, so the base area is simply the area of a square with side length s:

base area = s^2 = 19.6 ft^2

We are also given the height of the pyramid:

height = 11.6 ft

Substituting these values into the formula for the volume of a pyramid, we get:

V = (1/3) × base area × height

= (1/3) × 19.6 ft^2 × 11.6 ft

≈ 79.1 ft^3 (rounded to the nearest tenth)

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Using the centers we know that the equation of the circle is (x+2)²+(y−3)² =40.

A circle is a two-dimensional, symmetrical figure in mathematics.

The circle's center is a place inside the circle from which all points on the circle's edge are equally far.

A circle's general equation is (x - h)² + (y - k)² = r², where (h, k) denotes the circle's center's location and r denotes the radius.

So, the equation of the circle form:

(x−h)² +(y−k)² =r²

The centers we have: (-2, 3)

(x+2)²+(y−3)²=r²

It passes through points (4, 5). Now:

(4+2)² +(5−3)²=r²

6²+2²=r²

r² =36+4

r² =40

Then, equation: (x+2)²+(y−3)² =40

Therefore, using the centers we know that the equation of the circle is (x+2)²+(y−3)² =40.

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Correct question:

Find the Equation of the circle whose center is (−2,3) which passes through the point (4,5).

A line graph would be an appropriate data display to show the average height of all the plants during the month and how the heights vary.

A line graph is a visual representation that displays the relationship between two variables, in this case, the weekly heights of the sunflowers and the time in weeks. The x-axis would represent the weeks, and the y-axis would represent the height in inches. The line graph would show the trend in the data over time, and it would be easy to see how the heights of the sunflowers change over the weeks. Additionally, it would be possible to calculate the average height of all the plants during the month by adding up the heights of all the plants at each time point and dividing by the total number of plants. This average could then be represented on the graph as a horizontal line, showing how it compares to the actual heights of the sunflowers. Furthermore, the line graph could also be used to show the variability in the data by plotting error bars around the average line or displaying individual data points as dots or small lines. This would allow viewers to see how much the heights vary between plants and how consistent the growth is over time.

Here,

In summary, a line graph would be an appropriate data display to show the average height of all the plants during the month and how the heights vary. It would allow viewers to easily see the trends in the data over time, and how much the heights vary between plants, making it a useful tool for visualizing the growth of sunflowers.

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The tent with the assumed parameters is tall enough for the sisters to stand up inside.

Assuming a reasonable height for a typical tent, which is around 6 feet, it should be tall enough for both sisters to stand up inside if they are both over 5 feet tall.

In this case, we can imagine the tent as a triangular prism, with the sloping sides forming a right triangle.

Let's call the height of the tent "h," the length of the base "b," and the length of the sloping side "s."

Using the Pythagorean theorem, we can write:

s^2 = h^2 + (b/2)^2

Since we know that each sister is over 5 feet tall, we can set h = 5 feet. We also know that the base of the tent is usually wider than it is tall, so we can assume a reasonable value for b, such as 8 feet.

Substituting these values into the equation above, we get:

s^2 = 5^2 + (8/2)^2

s^2 = 25 + 16

s^2 = 41

Taking the square root of both sides, we get:

s ≈ 6.4 feet

Since this is greater than the height of both sisters (which is 5 feet), we can conclude that the tent is tall enough for them to stand up inside.

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Answer:

7

Step-by-step explanation:

58 divided by 8 equals 7 use a calculator and you get your answer.hope it helps

The sum of the first 10 terms of the sequence is 20.

The sequence is made up of alternating blocks of 's and 's, with the 's occurring in the blocks.

In other words, the sequence might look something like this:
[tex]s, sss, s, sss, s, sss, s, sss, ...[/tex]
Assuming that this is indeed the case, we can try to find the sum of the first terms of the sequence using a couple of different methods.
One way to approach the problem is to simply add up the first n terms of the sequence by hand.

The sum of the first 10 terms, we could write out the sequence like this:
[tex]s + sss + s + sss + s + sss + s + sss + s + sss[/tex]
and then add up the individual terms:
[tex]1 + 3 + 1 + 3 + 1 + 3 + 1 + 3 + 1 + 3 = 17[/tex]
So, the sum of the first 10 terms of the sequence is 17.
The problem is to look for a pattern in the sequence and use that pattern to find the sum of the first n terms more quickly.

In this case, we can see that each block of 's contributes 3 to the sum (since there are three 's in each block), while each individual s contributes 1.

So we can break the sum down into two parts:

the sum of the blocks of 's, and the sum of the individual s's.
The sum of the blocks of 's can be found by dividing n (the number of terms we want to sum) by 2 and rounding up to the nearest integer (since there are two terms per block).

The sum of the first 10 terms, we have 5 blocks of 's, so the sum of the blocks is:
[tex]5 * 3 = 15[/tex]
The sum of the individual s's is simply n minus the number of blocks, since each block contains three terms.

So in this case:
[tex]10 - 5 = 5[/tex]
Putting it all together, we get:
[tex]15 + 5 = 20[/tex]

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Answer to the question is (a) longest path. The critical path is determined by identifying all the possible paths and calculating their durations, and the one with the longest duration is identified as the critical path.

The number of paths can vary depending on the specific situation or system being analyzed.

The critical path is the longest path in terms of duration or time required to complete all its activities. It is the sequence of tasks or activities that must be completed in order to complete the project within the minimum possible time.

The critical path determines the total duration of the project, and any delay in the critical path activities will cause a delay in the project's completion time.

Therefore, the answer to the question is (a) longest path. The critical path is determined by identifying all the possible paths and calculating their durations, and the one with the longest duration is identified as the critical path.

The critical path method (CPM) is a popular technique used in project management to identify and manage the critical path.

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False. All values in a dataset with a normal distribution can be converted to a z-score.

False. All values in a dataset with a normal distribution can be converted to a z-score. The z-score standardizes the data, allowing for comparisons across different distributions by representing the number of standard deviations a data point is away from the mean.

A continuous random variable that tends to cluster around a centre or average value with a particular degree of spread or variation is described by the normal distribution, commonly referred to as the Gaussian distribution. The maximum frequency is near the mean and decreases in frequency as one moves farther away from the mean in both directions. It is a symmetrical bell-shaped curve.

The standard normal distribution, in which the mean and standard deviation are both 0, is a particular instance of the normal distribution. The standard score, also referred to as the z-score, is a measurement of how many standard deviations a data point deviates from the distribution's mean. The difference between the observation's value and the mean is used to calculate it.

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False. All values in a dataset with a normal distribution can be converted to a z-score.

The z-score transformation is used precisely to transform values from a normal distribution to a standard normal distribution, which has a mean of 0 and a standard deviation of 1.

All values in a dataset with a normal distribution can be converted to a z-score.

The statement "not all values in a dataset with a normal distribution can be converted to a z-score" is false.

A z-score represents the number of standard deviations a data point is away from the mean of a distribution and can be calculated for any value within a normal distribution.

In fact, the conversion of values to z-scores is a common method of standardizing data for statistical analysis.
To calculate a z-score, you subtract the mean of the distribution from the individual value and then divide the result by the standard deviation of the distribution.

This transformation allows for easier comparison between data points and across different datasets.

Z-scores can also be used to calculate probabilities and determine the likelihood of certain events occurring within a distribution.
While it is true that some datasets may not follow a normal distribution, this does not mean that z-scores cannot be calculated for all values within the dataset.

The distribution is not normal, other statistical techniques such as transformation or non-parametric tests may be necessary.

A normally distributed dataset, every value can be converted to a z-score, allowing for standardized comparisons and analysis.

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The total number of monotonous positive integers either a strictly increasing or a strictly decreasing sequence is equal to 90.

Let us consider the cases of monotonous numbers with increasing digits and monotonous numbers with decreasing digits separately.

For a monotonous number with increasing digits, we can start with any digit from 1 to 9, and for each subsequent digit.

Choose any number from the set of remaining digits.

For example, if we start with 1, we have 8 choices for the second digit, 7 choices for the third digit, and so on.

Until we have only one choice left for the last digit.

There are a total of 9 + 8 + 7 + ... + 1 = 45 monotonous numbers with increasing digits.

For a monotonous number with decreasing digits, we can start with any digit from 9 to 1, and for each subsequent digit.

Choose any number from the set of remaining digits that is smaller than the previous digit.

For example, if we start with 9, we have only one choice for the second digit 8, one choice for the third digit 7, and so on.

Until we have only one choice left for the last digit.

There are a total of 9 + 8 + 7 + ... + 1 = 45 monotonous numbers with decreasing digits.

The number 0 cannot be the first digit of a monotonous number with increasing digits, because it is not a positive integer.

No need to consider this case separately.

Therefore, the total number of monotonous positive integers is 45 + 45 = 90.

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The simplified expression is[tex]135v^12y^10u^5[/tex].

A mathematical expression is simplified when it is replaced with a

simpler, typically shorter, equivalent statement. to make it simpler, more

understandable, or easier. arithmetic to eliminate similar elements,

regroup terms in the same variable, etc. to simplify (an equation, fraction, etc.).

To simplify the expression, we'll combine the like terms:

Your expression:

[tex]15v^4y^7u^5 \times 9v^8y^3[/tex]

Multiply the coefficients (15 and 9):

15 × 9 = 135

Add the exponents of the like terms [tex](v^4 and v^8, y^7 and y^3[/tex]):

[tex]v^(4+8) = v^12\\y^(7+3) = y^10[/tex]

Combine the simplified terms:

[tex]135v^12y^10u^5[/tex]

The simplified expression is[tex]135v^12y^10u^5[/tex].

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Triangle PQR's perimeter is **60 inches**.

The lengths of a triangle's sides added together form its perimeter.

The Pythagorean theorem asserts that in a right-angled triangle, the square of the hypotenuse's length (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides 1. A Pythagorean triplet is a group of three positive integers that satisfies this condition.

Triangle PQR has sides PQ = 15 inches, QR = 20 inches, and PR = 25 inches.

A triangle's perimeter is equal to the sum of its sides. Triangle PQR's perimeter is 15 + 20 + 25= **60 inches**.  as a result.

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The total areas of each composite shape are:

1) 121 in²

2) 150m²

3) 14.03 ft²

4) 538.36 cm²

1) Formula for area of a rectangle is:

Area = Length * width

Thus:

Area of composite shape = (9 * 8) + (7 * 7)

= 121 in²

2) Formula for area of rectangle is:

Area = Length * width

Area = 12 * 5 = 60 m²

Area of triangle = ¹/₂ * base * height

Area = ¹/₂ * 12 * 15

Area = 90 m²

Area of composite shape = 60 + 90 = 150m²

3) Area of triangle = ¹/₂ * 3 * 7 = 10.5 ft²

Area of semi circle = ¹/₂ * πr²

= ¹/₂ * π * 1.5²

= 3.53 ft²

Total composite area = 10.5 ft² + 3.53 ft²

Total composite area = 14.03 ft²

4) Total composite area = (¹/₂ * π * 7.5²) + (30 * 15)

= 538.36 cm²

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