In a circle, an angle measuring 2.2radians intercepts an are of length 11.9.Find the radius of the circle to the nearest
10th.

Answer:

The equation provided is y = 1200x + 7000, where y is the yearly income and x is the number of years of education.

To determine how much 1 year of education adds to a person's yearly income, we need to find the change in y when x increases by 1.

Let's plug in x and x+1 into the equation to find the corresponding yearly incomes:

When x = 1, y = 1200(1) + 7000 = $8200

When x = 2, y = 1200(2) + 7000 = $9400

The difference between these two yearly incomes is:

9400 - 8200 = $1200

Therefore, 1 year of education adds $1200 to a person's yearly income according to the model.

The answer is (A) $1200.

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Answer:

Step-by-step explanation:

5 6 7

To determine the exact distance and bearing of the island from Miami, we can use basic trigonometry and vector addition.

First, we need to break down the flight path into its components. The initial bearing of E 20 S can be broken down into an eastward component of 600 mph [tex]cos(20°) = 562.57[/tex] mph and a southward component of 600 mph [tex]sin(20°) = 208.38[/tex] mph.

After flying for 4 hours, the plane has traveled a distance of 600 mph × 4 = 2400 miles, with a displacement of 562.57 mph × 4 = 2250.28 miles eastward and 208.38 mph × 4 = 833.52 miles southward.

When the pilot adjusts the bearing to S 5'E, the plane travels 600 mph × 2 = 1200 miles with a displacement of 600 mph cos(5°) × 2 =996.18 miles eastward and 600 mph sin(5°) × 2 = 104.57 miles southward.

Finally, when the pilot adjusts the bearing to E 5°S, the plane travels 600 mph × 1 = 600 miles with a displacement of 600 mph cos(5°) = 598.31 miles eastward and 600 mph sin(5°) = 52.42 miles southward.

To find the total displacement from Miami to the island, we can add up the eastward and southward components:

Total eastward displacement = 2250.28 + 996.18 + 598.31 = 3844.77 miles

Total southward displacement = 833.52 + 104.57 + 52.42 = 990.51 miles

Using the Pythagorean theorem, we can find the total distance from Miami to the island:

[tex]Distance = sqrt((3844.77)^2 + (990.51)^2) =3985.21 miles[/tex]

To find the bearing from Miami to the island, we can use inverse trigonometry:

[tex]Bearing = tan^{-1} (\frac{990.51}{3844.77}) = 14.76°[/tex]

Therefore, you should tell the rescue authorities in Miami that you are approximately 3985.21 miles away from Miami and the bearing to the island is approximately N 75°E.

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Therefore, the probability of the curious pattern occurring is 1/36.

Probability theory is an important branch of mathematics that is used to model and analyze random phenomena, such as the outcomes of games of chance, the behavior of particles in physics, or the performance of complex systems in engineering. It has many practical applications in fields such as statistics, finance, economics, and computer science.

Here,

The probability of rolling a number greater than 3 on a fair die is 3/6 = 1/2, since there are three numbers (4, 5, 6) that satisfy this condition out of the six possible outcomes.

Similarly, the probability of rolling a number greater than 4 on a fair die is 2/6 = 1/3, and the probability of rolling a number greater than 5 is 1/6.

Since each roll is independent, we can multiply these probabilities together to get the probability that all three conditions are satisfied:

P = (1/2) × (1/3) × (1/6)

= 1/36

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From the given data, the statement "A higher percentage of 8th graders than 7th graders prefer Math/Science" is correct. So, correct option is C.

To calculate the relative frequencies, we need to divide the frequency of each category by the total number of responses.

For 7th grade:

Relative frequency of English: 38/116 = 0.3276

Relative frequency of History: 36/116 = 0.3103

Relative frequency of Math/Science: 28/116 = 0.2414

Relative frequency of Other: 14/116 = 0.1207

For 8th grade:

Relative frequency of English: 47/182 = 0.2582

Relative frequency of History: 45/182 = 0.2473

Relative frequency of Math/Science: 72/182 = 0.3956

Relative frequency of Other: 18/182 = 0.0989

From the data, we can see that a higher percentage of 8th graders prefer Math/Science than 7th graders. Therefore, the statement "A higher percentage of 8th graders than 7th graders prefer Math/Science" correctly describes the association between favorite subject and grade.

The statements "A higher percentage of 8th graders than 7th graders prefer History" and "A higher percentage of 7th graders than 8th graders prefer English" are incorrect as the relative frequencies for these subjects are similar in both grades.

Overall, we can conclude that the choice of favorite subject is not strongly associated with the grade level of the students.

So, correct option is C.

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Complete question is:

Calculating the relative frequencies from the data given in the table. Choose all that correctly describe an association between favorite subject and grade.

A) A higher percentage of 8th graders than 7th graders prefer History.

B) A higher percentage of 7th graders than 8th graders prefer English.

C) A higher percentage of 8th graders than 7th graders prefer Math/Science.

2)By using Comparison Test,the series 23-1 5k-1 k=1,is divergent.

3)By using Integral Test the series Ink k k=1 is divergent.

2) To determine the convergence or divergence of the series 23-1 5k - 1 k=1:

For the first series, 23-1 5k-1 k=1, we can use the Limit Comparison Test.

Let's compare it to the series 5k-1 k=1.

We take the limit as k approaches infinity of the ratio of the two series:
lim(k->∞) [(23-1 5k-1) / (5k-1)] = lim(k->∞) [23 / 5] = 23/5
Since this limit is finite and positive, and the series 5k-1 diverges (as it is a p-series with p=1),

we can conclude that the given series also diverges.

3)To determine the convergence or divergence of the series Ink k k=1:
For the second series, Ink k=1, we can use the Integral Test.

We need to check if the following improper integral converges or diverges:
∫(1 to ∞) ln(x) dx
Integrating by parts, we get:
∫(1 to ∞) ln(x) dx = [xln(x) - x]1∞ + ∫(1 to ∞) dx/x
The first term evaluates to -∞, and the second term is the divergent harmonic series.

Therefore, the improper integral and the series both diverge.

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Therefore, the height of the cone is approximately 4.23 centimeters.

Volume is a measure of the amount of space occupied by a three-dimensional object or region. It is the total amount of space enclosed by the boundaries of the object or region. Volume is usually measured in cubic units, such as cubic centimeters (cm³) or cubic meters (m³). Knowing the volume of an object can be useful for many purposes, such as determining how much material is needed to fill a container or how much space is needed to store a certain quantity of objects.

Here,

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

V = (1/3)πr²h

where V is the volume, r is the radius, and h is the height.

We are given that the volume of the cone is 3.0144 cubic centimeters, so we can plug this into the formula:

3.0144 = (1/3)πr²h

Next, we need to find the radius of the cone. Since we are not given the radius directly, we may need to use other information that is not given in the problem. If we assume that the cone is a right circular cone, then we can use the fact that the radius and height are proportional to find the radius:

r/h = 1/3

r = (1/3)h

We can substitute this expression for r into the volume formula:

3.0144 = (1/3)π((1/3)h)²h

Simplifying this equation:

3.0144 = (1/27)πh³

Multiplying both sides by 27/π:

h³ = 84.96

Taking the cube root of both sides:

h = 4.23 (rounded to the nearest hundredth)

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The style that will be least expensive for the project, based on the product of the fractions representing the dimensions is the Style D that will yield a total cost of $25.92

A fraction is a representation of a part of a whole. It is a quantity which forms part of a whole number.

The area Qiang wants to tile = 3 ft × 3 ft

The price list and area of each tile, based on the product of the fractions of the tile dimensions are;

A; (5/6) × (1 1/12) = 65/72 cost 3.25

B; (5/6) × (2 1/12) = 125/72 cost 6.20

C; (5/6) × (5/6) = 5/16 cost  2.75

D; (5/12) × (3/4) = 5/16 cost 0.90

E; (5/12) × (5/12) = 25/144 cost 0.65

The areas of the tiles are;

The number of tiles required,  are;

Cost of tiles style A = 9/(65/72) × 3.25 = 32.4

Cost of tiles style B = 9/(125/72) × 6.20 = 32.14

Cost of tiles style C = 9/(5/16) × 2.75 = 79.2

Cost of tiles style D = 9/(5/16) × 0.90 = 25.92

Cost of tiles style E = 9/(25/144) × 0.65 = 33.696

The least expensive style for the project is style D

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The number of people at the convention are bored by cable news are 11079

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

Proportion = Nine out of eleven people at a math convention are bored to tears by cable news.

This means that

Proportion = 9/11

If 2462 people at the convention are not bored by cable news, then we have

(1 - 9/11) * x = 2462

This gives

x = 2462/(1 - 9/11)

Evaluate

x = 13541

Next, we have

Bored = 13541 - 2462

Bored = 11079

Hence, the number of people is 11079

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The couple needs to invest $9,060.52 per year to have enough money to send their daughter to university.  The couple needs to invest an additional $1,322.18 per year if they wait one year to start saving for their daughter's university education.

a. The amount of money the couple needs to invest each year can be calculated using the present value of annuity formula. The future value of the university cost after 10 years can be calculated by compounding the current cost for 10 years at an annual inflation rate of 5.6%.

Then, the present value of this future cost can be found by discounting it back to the present using the effective annual interest rate of 6.75%. Finally, this present value can be divided by the present value of an annuity factor for 9 years (one year before the university starts) at an effective annual interest rate of 6.75%.

Using these calculations, the couple needs to invest $9,060.52 per year to have enough money to send their daughter to university.

b. If the couple waits for one year, they will have nine years to save for their daughter's university education. This means they will have one less year to invest, so they will need to invest more each year to have enough money for their daughter's university education.

The additional amount they need to invest can be found by subtracting the present value of an annuity of $9,060.52 for 9 years from the present value of an annuity of $9,060.52 for 8 years.

Using these calculations, the couple needs to invest an additional $1,322.18 per year if they wait one year to start saving for their daughter's university education.

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a. The initial height of the bouncing ball is 15 feet.

b. The percent rate of change is 85%.

c. The height of the bouncing ball after 5 seconds is approximately 6.79 feet (rounded to the nearest hundredth).

In mathematics, a function is a rule that assigns each element in a set (the domain) to a unique element in another set (the range). The domain and range can be any sets, but they are typically sets of real numbers.

The function f(x) = 15 (0.85)ˣ models the height, in feet, of a bouncing ball after x seconds.

a. The initial height of the bouncing ball is given by f(0). Plugging in x = 0, we get:

f(0) = 15*1

f(0) = 15(1)

f(0) = 15

Therefore, the initial height of the bouncing ball is 15 feet.

b. The percent rate of change is given by the coefficient of the base, which is 0.85 in this case. To convert this decimal to a percentage, we can multiply by 100:

0.85 × 100 = 85

Therefore, the percent rate of change is 85%.

c. The height of the bouncing ball after 5 seconds is given by f(5). Plugging in x = 5, we get:

f(5) = 15

f(5) ≈ 6.79

Therefore, the height of the bouncing ball after 5 seconds is approximately 6.79 feet (rounded to the nearest hundredth).

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To show that the decision boundary of the CLOSE classifier is a linear hyperplane, we need to show that it can be represented as sign(w · x + b), where w is the weight vector, b is the bias term, and sign is the sign function that outputs +1 or -1 depending on whether its argument is positive or negative.

Let x be a test example, and let d+ = ||x - C+|| be the distance from x to the center of the positive examples, and d- = ||x - C-|| be the distance from x to the center of the negative examples. The CLOSE classifier assigns x to the positive class if d+ < d-, and to the negative class otherwise. Equivalently, it assigns x to the positive class if

||x - C+[tex]||^2[/tex] - ||x - C-[tex]||^2[/tex] < 0.

Expanding the squares and simplifying, we get

(x · x - 2C+ · x + C+ · C+) - (x · x - 2C- · x + C- · C-) < 0,

which is equivalent to

2(w · x) + (C+ · C+ - C- · C-) - 2(w · (C+ - C-)) < 0,

where w = C+ - C- is the vector pointing from the center of the negative examples to the center of the positive examples. Rearranging, we get

w · x + b < 0,

where b = (C- · C-) - (C+ · C+) is a constant.

Thus, the decision boundary of the CLOSE classifier is a hyperplane defined by the equation w · x + b = 0, and the classifier assigns a test example x to the positive class if w · x + b > 0, and to the negative class otherwise.

To compute the values of w and b in terms of C+ and C-, we can use the definition of w and b above. We have

w = C+ - C-,

b = (C- · C-) - (C+ · C+).

To compute the dual weights α's, we need to solve the dual optimization problem for the support vector machine (SVM) with a linear kernel:

minimize 1/2 ||w||^2 subject to yi(w · xi + b) >= 1 for all i,

where yi is the class label of the i-th training example, and xi is its feature vector. The dual problem is

maximize Σi αi - 1/2 Σi Σj αi αj yi yj xi · xj subject to Σi αi yi = 0 and αi >= 0 for all i,

where αi is the dual weight corresponding to the i-th training example. The number of support vectors is the number of training examples with nonzero dual weights.

In our case, the training examples are the positive and negative centers C+ and C-, so we have n+ + n- = 2 training examples. The feature vectors are simply the centers themselves, so xi = C+ for i = 1 and xi = C- for i = 2. The class labels are yi = +1 for i = 1 (positive example) and yi = -1 for i = 2 (negative example). Plugging these into the dual problem, we get

maximize α1 - α2 - 1/2 α[tex]1^2[/tex] d(C+, C+) - 2α1α2 d(C+, C-) - 1/2 α[tex]2^2[/tex] d(C-, C-) subject to α1 - α2 = 0 and α1,

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Answer:

a) The number of groups are 11.

b) For Aadya, there are 12 stamps in each group. For Sumit, there are 19 stamps per group.

Step-by-step explanation:

Aadya: 143 - 11 = 132 stamps.

Sumit: 220 - 11 = 209 stamps.

Greatest Common Factor of 132 and 209 = 11 group for both

Aadya: Let a = # of stamps in each group.; 11a = 132; a = 12 stamps per group

Sumit: Let s = # of stamps in each group.; 11s = 209; s = 19 stamps per group.

To find the probability P(X < 4) for the given probability model, where X represents the number of cups of coffee an adult aged 18 or over drinks on average per day in the United States. The probabilities for each number of cups are given in the table:
- 2 cups: 0.36
- 3 cups: 0.19
- 4 or more cups: 0.11

To find P(X < 4), we need to sum the probabilities of X being 2 or 3 cups, as those are the only values less than 4:

P(X < 4) = P(X = 2) + P(X = 3)
P(X < 4) = 0.36 + 0.19

Now, we just need to add these probabilities together:

P(X < 4) = 0.55

So, the probability that a randomly chosen adult drinks fewer than 4 cups of coffee per day is 0.55 or 55% when expressed as a percentage.

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Alexander stacked  16 unit cubes required to build the rectangular prism.

A three-dimensional solid object called a prism has two identical ends. It consists of equal cross-sections, flat faces, and identical bases. Without bases, the prism's faces are parallelograms or rectangles.

Here we need to find the number of cubes required to build the rectangular prism.

Here first we need to find how many cubes stack in the base layer

Number of unit cubes in the base layer = Number of cubes along the length * Number of cubes along the width

The number of unit cubes in the base layer = 2 * 4 = 8 cubes.

Total number of unit cubes in prism =Number of unit cubes in the base layer *Number of layers = 8 * 2 = 16 unit cubes

So, there are 16 unit cubes are required to build the rectangular prism.

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Complete question :

Alexander stacked unit cubes to build the rectangular prism below. Use the rectangular prism to answer​ the question.

How many cubes are required to build the rectangular prism?

The area of the playground include the following: 900 square yards.

In Mathematics and Geometry, the area of a regular polygon can be calculated by using this formula:

Area = (n × s × a)/2

Where:

In Mathematics and Geometry, the area of a parallelogram can be calculated by using the following formula:

Area of a parallelogram, A = base area × height

Area of playground, A = 45 × 20

Area of a playground, A = 900 square yards.

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The following are correct about the triangle;

1. angle C is 60°

2. angle B is 60°

3. The length of segment DB is 3

4. The length of side x is 3√3

An equilateral triangle is a type of triangle in which all it's sides and angles are equal.

Since all the angles of an equilateral triangle are equal, then,

x+x+x = 180

3x = 180

x = 180/3 = 60°

therefore each angle is 60°

angle C and angle B are 60°

Using Pythagorean theorem

x² = 6²- 3²

x² = 36-9

x² = 27

x = √27

x = √9×3

x = 3√3

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This is the derivative of f(x) with respect to x:

f'(x) = (-2e^(-x) + 1/x)·(9x^2.5) + (2e^(-x) + ln(x))·(22.5x^1.5)

To find the derivative of f(x) = g(x) · h(x), we'll use the product rule, which states that (u·v)' = u'·v + u·v'. Let u = g(x) and v = h(x).

u = g(x) = 2e^(-x) + ln(x)
v = h(x) = 9x^2.5

Now, find the derivatives of u and v:

u' = g'(x) = -2e^(-x) + 1/x
v' = h'(x) = 22.5x^1.5

Now apply the product rule:

f'(x) = u'·v + u·v'
f'(x) = (-2e^(-x) + 1/x)·(9x^2.5) + (2e^(-x) + ln(x))·(22.5x^1.5)

This is the derivative of f(x) with respect to x.

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The price of a new ticket after reducing the ticket price by 25% is $6. Maddy will need to sell 400 more tickets this year to raise the same amount of money as last year.

Number of tickets sold = 1200

Cost of each ticket = $8

Part A:

If Maddy lowers ticket costs by 25%, The price of a new ticket will be:

Ticket price = $8 - (25% of $8)

Ticket price = $6

The New ticket price will be calculated by multiplying 0.75 for reducing the 25% tickets

New ticket price = $8 x 0.75 = $6

Part B:

To find how many tickets Maddy requires to sell to equal the same amount of money collected in the previous year:

Total revenue = total number of tickets x Ticket price

1200 tickets x $8 per ticket = $9,600

= $9,600 / $6

= 1,600

Total tickets need to sell = 1600-1200 = 400

Therefore we can conclude that Maddy will need to sell 400 more tickets this year.

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Answer:

Another vehicle has a mass of 1290 kg and uses diesel fuel. 1 L of petrol has a mass of 737 g. 1L of diesel has a mass of 820g.

Using the  Pythagorean theorem we get , the  height of the TV screen is approximately 15.4 inches to the nearest tenth of an inch.

The screen of a 32-inch high definition television has a diagonal length of 31.5 inches. If the TV screen is 27.5 inches wide, you need to find the height of the screen to the nearest tenth of an inch. To do this, you can use the Pythagorean theorem, which states that the square of the length of the hypotenuse (diagonal) of a right triangle is equal to the sum of the squares of the other two sides (width and height).

1. Let the height of the TV screen be h inches.
2. According to the Pythagorean theorem, (width)^2 + (height)^2 = (diagonal)^2.
3. Substitute the given values: (27.5)^2 + (h)^2 = (31.5)^2.
4. Calculate the squares: 756.25 + h^2 = 992.25.
5. Subtract 756.25 from both sides: h^2 = 236.
6. Find the square root of 236: h ≈ 15.4 inches.

The height of the TV screen is approximately 15.4 inches to the nearest tenth of an inch.

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2a) The equation used to answer the question is (1/Time to fill the pool) = (1/Time taken by hose) - (1/Time taken by leak).

2b) It would take 40 minutes to fill the pool with water when there is a small hole causing a leak.

To solve this, we can use the concept of rates of work.

2a) The equation we would use to answer the question is:

(1/Time to fill the pool) = (1/Time taken by hose) - (1/Time taken by leak)

2b) Let's plug in the values given in the question:

(1/Time to fill the pool) = (1/30 minutes) - (1/120 minutes)

To find the time to fill the pool, we first need to find a common denominator for the fractions. The common denominator is 120, so we can rewrite the fractions as:

(1/Time to fill the pool) = (4/120) - (1/120)

Now, add the fractions on the right side:

(1/Time to fill the pool) = (3/120)

Next, take the reciprocal of both sides to solve for the time to fill the pool:

Time to fill the pool = 120/3

Time to fill the pool = 40 minutes

So, it would take 40 minutes to fill the pool.

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Answer:

1email is given by its boss and another email is given by its assistent

Miss Kito will receive $456,789 from her grandfather's estate.

Let's break down the information given in the problem step by step.

The estate was valued at $4,567,890.

3/5 of the estate value would be given to various charities.

To find out how much money is left after 3/5 is given to charities, we can subtract 3/5 from 1:

1 - 3/5 = 2/5

So, 2/5 of the estate value is left. We can find out how much that is by multiplying:

2/5 x $4,567,890 = $1,827,156

Therefore, $1,827,156 is left after 3/5 of the estate value is given to charities.

1/4 of the remaining amount would be used to create a scholarship for mathematics majors at Fishtopia University.

To find out how much money will be used to create the scholarship, we can multiply:

1/4 x $1,827,156 = $456,789

Therefore, $456,789 will be used to create the scholarship.

The rest would be divided evenly among his three grandchildren, of which Miss Kito was one.

To find out how much money Miss Kito will receive, we can subtract $456,789 from $1,827,156:

$1,827,156 - $456,789 = $1,370,367

Finally, we can divide $1,370,367 by 3 to find out how much money each grandchild will receive:

$1,370,367 ÷ 3 = $456,789

Therefore, Miss Kito will receive $456,789 from her grandfather's estate.

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y < four-fifthsx - one-fifth

y < 2x + 6

The given system of inequalities can be represented in slope-intercept form as follows:

y < (4/5)x - 1/5

y < 2x + 6

To convert the given inequalities into slope-intercept form, we rearrange each equation to solve for y

In the first inequality, we add 5y to both sides and then divide by 4 to isolate y. This gives us:

4x - 5y < 1

-5y < -4x + 1

y > (4/5)x - 1/5

In the second inequality, we add x to both sides and then divide by -1/2 to isolate y. This gives us:

1/2y - x < 3

1/2y < x + 3

y > 2x + 6

Therefore, the given inequalities in slope-intercept form are:

y < (4/5)x - 1/5

y > 2x + 6

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Answer:

x=8.31

Step-by-step explanation:

We can use the Proportional Segments Theorem

9/26=x/24

26x=216

x=216/26=8.31

52

There are 52 ways to draw the first card from a standard deck of 52 cards. Each card in the deck is distinct, so there are 52 different possibilities for the first card.

The deck consists of 4 suits (diamonds, hearts, spades, and clubs) with 13 cards in each suit. Therefore, there are 13 cards of the spades suit. Since each card is equally likely to be drawn, the probability of drawing a spade as the first card is 13/52 or 1/4.

This is because out of the 52 possible cards, 13 of them are spades. So, regardless of the specific spade that is drawn, there are 13 ways to draw a spade as the first card.

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There are 616 freshmen in the school according to fraction, percentage and number of different types of student.

Let us represent the total number of students in school as x. So, the equation that will form is -

Number of freshmen + sophomores + juniors + seniors = total number of students

35x/100 + x/4 + 9x/40 + 308 = x

Adding the values and converting into decimal.

0.825x + 308 = x

Rewrite the equation

308 = (1 - 0.825)x

308 = 0.175x

x = 308/0.175

Divide the values

x = 1760

So, number of freshmen = 0.35 × 1760

Multiply the numbers

Number of freshmen = 616

Thus, there are 616 freshmen.

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Answer:

x ≈ 36.87°

Step-by-step explanation:

using the sine ratio in the right triangle

sin x = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{3}{5}[/tex] , then

x = [tex]sin^{-1}[/tex] ( [tex]\frac{3}{5}[/tex] ) ≈ 36.87° ( to the nearest hundredth )