find the length of the arc

(50 points)

can mark brainly

Answer:

A. 2/250

Step-by-step explanation:

So, first use calculator on the multiple-choice question.

Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It has many real-world applications such as in (engineering, architecture, and navigation.)

15. One application of trigonometry is in determining the height of a building. This can be done by measuring the angle of elevation from a known distance away from the building and using trigonometric functions to find the height.
16. Another application of trigonometry is in surveying land. Surveyors use trigonometry to measure distances and angles between different points on a piece of land, which helps them create accurate maps and boundary lines.
17. Trigonometry is also used in physics to calculate the motion of objects that move in a circular or oscillatory motion, such as a pendulum or a rotating wheel.
18. Finally, trigonometry is used in astronomy to calculate the position and movement of celestial bodies. Astronomers use trigonometric functions to measure the distance between stars and galaxies

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Answer:

X=35

Step-by-step explanation:

if the translated part is the full question; the answer is attached ⬆️.

Hope it helps

The answer is 2a + 2b + 3 = 20

In the given figure the similarity is angle-angle property.

An angle is the result of the intersection of two lines.

An "angle" is the length of the "opening" between these two beams.

Angles are commonly measured in degrees and radians, a measurement of circularity or rotation.

In geometry, an angle can be created by joining the extremities of two rays. These rays are intended to represent the angle's sides or limbs.

The two primary components of an angle are the limbs and the vertex.

The joint vertex is the common terminal of the two beams.

Hence, In the given figure the similarity is angle-angle property.

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The area of the unshaded region is 3x²-3x-8

What is area of rectangle?

A rectangle is a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°). The opposite sides of a rectangle are equal and parallel.

The area of a rectangle is expressed as;

A = l× w

Area of the unshaded part = Area of the whole rectangle - area of shaded part

Therefore area of the unshaded part =

5x²+4x-8 -(2x²+7x)

= 5x²+4x-8 -2x²-7x

collect like terms

5x²-2x²+4x-7x-8

= 3x²-3x-8

therefore the area of the unshaded part is 3x²-3x-8

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Using percentage, we can find that:

You need to deposit $833.33 every month and the interest earned will be = $27,000.

The Latin term "per centum," which means "by the hundred," is the source of the English word "percentage." Fractions with a denominator of 100 are percentages. In other words, it is a link where the value of "whole" is always taken to be 100.

Total amount you want to have = $300,000

Time is = 30 years

= 30 × 12

= 360 months.

Interest earned is 9%.

Now, the amount you need to deposit every month =

Total amount/Total time

= 300000/360

= $833.33

So, you need to deposit $833.33 every month.

Now interest earned in 30 years is given = 9%

So, amount earned = 9% of 300,000

= 9/100 × 300,000

= $27,000.

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a. Sm satisfies all three properties of an equivalence relation, it is indeed an equivalence relation on Real numbers[x].

b. The equivalence class of Sm containing f is the set of all polynomials g that satisfy the condition m | (g - f).

c. The equivalence class of Sm containing the polynomial f(x) = x + 1 is the set {g ∈ Real numbers[x] : g(2) = 3}.

Real numbers are those that can be used to calculate constant values like temperature, time, or distance. They are equivalent to countless decimal increases. They are the sum of all positive and negative integers, fractions, decimals, transcendental numbers, and irrational numbers.

(a) To prove that Sm is an equivalence relation on Real numbers[x], we need to show that it satisfies three properties: reflexivity, symmetry, and transitivity.

Reflexivity: For any polynomial f ∈ Real numbers[x], we have f − f = 0, which is clearly a multiple of any polynomial m. Therefore, (f, f) ∈ Sm for all f ∈ Real numbers[x], and Sm is reflexive.

Symmetry: If (f, g) ∈ Sm, then m is a factor of g − f. This means that there exists a polynomial q ∈ Real numbers[x] such that g − f = mq. It follows that f − g = −mq, which is a multiple of m. Therefore, (g, f) ∈ Sm, and Sm is symmetric.

Transitivity: If (f, g) ∈ Sm and (g, h) ∈ Sm, then m is a factor of g − f and m is a factor of h − g. This means that there exist polynomials q1 and q2 ∈ Real numbers[x] such that g − f = mq1 and h − g = mq2. It follows that h − f = (h − g) + (g − f) = mq2 + mq1 = m(q2 + q1). Therefore, m is a factor of h − f, and (f, h) ∈ Sm. Thus, Sm is transitive.

Since Sm satisfies all three properties of an equivalence relation, it is indeed an equivalence relation on Real numbers[x].

(b) The division rule for polynomials states that for any polynomials f and g with g ≠ 0, there exist unique polynomials q and r such that f = qg + r and deg r < deg g. The equivalence class of Sm containing f is the set of all polynomials g that satisfy the condition m | (g - f).

Applying the division rule for polynomials to the polynomial g - f, we can write it as g - f = mq + r, where deg r < deg m. This means that g - r = f + mq, and therefore, any polynomial in the equivalence class of Sm containing f can be written as g = r + f + mq, where deg r < deg m. In other words, every equivalence class of Sm contains a polynomial of the form r + f + mq, where r is a polynomial of degree less than deg m.

(c) Let m(x) = x - 2. Then for any polynomial f(x) ∈ Real numbers[x], we have (f, g) ∈ Sm if and only if g(x) - f(x) is a multiple of x - 2. This means that g(2) - f(2) = 0, or in other words, f(2) = g(2). Therefore, the equivalence class of Sm containing the polynomial f(x) = x + 1 is the set {g ∈ Real numbers[x] : g(2) = 3}.

Justification: Let g(x) = (x - 2) + 3. Then g(2) = 3, and g(x) - f(x) = (x - 2) + 3 - (x + 1) = x - 2, which is a multiple of x - 2. Therefore, (f, g) ∈ Sm, and the set {g ∈ Real numbers[x] : g(2) = 3} is an equivalence class of Sm.

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Answer:

[tex](x + 18)^{2} + (y + 9)^{2} = 1[/tex]

Step-by-step explanation:

In the proportion , in  1 second the position of kite is C)19 feet.

What is proportion?

A percentage is created when two ratios are equal to one another. We write proportions to construct equivalent ratios and to resolve unclear values. a comparison of two integers and their proportions. According to the law of proportion, two sets of given numbers are said to be directly proportional to one another if they grow or shrink in the same ratio.

Here in 3 seconds a kite's position = 57 feet.

Then , in 1 second  a kite's position = x feet.

Now using proportion then,

=> 3 seconds = 57

    1 second   = x

=> x =  57/3 = 19 feet.

Hence In 1 second the position of kite is C)19 feet.

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To document the total daily amount of liquid medication using the metric system, we need to convert teaspoons to milliliters, which is the standard unit of volume in the metric system.

One teaspoon is equal to approximately 5 milliliters, so three teaspoons would be equal to 15 milliliters.

If the patient is taking 15 milliliters every four hours, then they would be taking the medication 6 times a day (24 hours divided by 4 hours per dose).

Therefore, the total daily amount of the medication would be:

15 milliliters per dose x 6 doses per day = 90 milliliters per day

So, the total daily amount of the liquid medication should be documented as 90 milliliters per day in the patient's medical records using the metric system.

Accοrding the given questiοn the x- and y- intercepts, are as fοllοws,

x-intercept =(28, 0), y-intercept = (0, -4)

An intercept is the pοint οf intersectiοn οf the line with the cοοrdinate axes. If the line intersects with the X axis, then the y cοοrdinate οf the pοint οf intersectiοn is zerο and the intercept is called the x intercept.

Tο find the x-intercept, we need tο sοlve fοr x when y = 0:

0 = lοg2(x + 2) - 5

5 = lοg2(x + 2)

[tex]2^5 = x + 2[/tex]

x = 30 - 2 = 28

Therefοre, the x-intercept is (28, 0).

Tο find the y-intercept, we need tο evaluate the functiοn when x = 0:

f(0) = lοg2(0 + 2) - 5

f(0) = lοg2(2) - 5

f(0) = 1 - 5

f(0) = -4

Therefοre, the y-intercept is (0, -4)

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The total amount of water in the pool after 47 minutes is 1,470 gallons.

Determine the initial volume of water in the pool (if any) from Part A.
Calculate the rate at which water is being added to or removed from the pool (in gallons per minute).

This information should also be provided in Part A.
Multiply the rate of water flow by 47 minutes to find the total amount of water added or removed during that time.

For example, if the rate is 10 gallons per minute, you would calculate 10 * 47 = 470 gallons.

Add the initial volume of water to the total amount of water added or removed during the 47 minutes.

If the initial volume was, for example, 1,000 gallons and you added 470 gallons, the total volume would be 1,000 + 470 = 1,470 gallons.
The final result is the total amount of water in the pool after 47 minutes.

In the example above, the total volume would be 1,470 gallons.

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Answer:

We can get creative and use many equations using these numbers.

Step-by-step explanation:

4 more than (addition) the quotiont (division) Of a number (a variable) 6 is equal to 9.

let the variable for number be n.

we can use 4n/6=9

x=13.5

or 13 5/10

Answer:

Step-by-step explanation:

(x ÷ 6) + 4 = 9

(x ÷ 6) +4 - 4= 9 -4

x ÷ 6 = 5

x/6 = 5

x/6 · 6/1 = 5 · 6

x = 30

Answer: We can start by using the zero product property, which states that if the product of two factors is equal to zero, then at least one of the factors must be zero.

So, we can set each factor equal to zero and solve for theta:

Factor 1: cot(theta) - 1 = 0

Using the identity cot(theta) = cos(theta) / sin(theta), we can rewrite this as:

cos(theta) / sin(theta) - 1 = 0

cos(theta) - sin(theta) = 0

cos(theta) = sin(theta)

Dividing both sides by cos(theta), we get:

tan(theta) = 1

The solutions to this equation are theta = 45 degrees and theta = 225 degrees (since tangent is positive in the first and third quadrants).

Factor 2: 2sin(theta) + sqrt(3) = 0

Subtracting sqrt(3) from both sides and dividing by 2, we get:

sin(theta) = -sqrt(3)/2

The solutions to this equation are theta = 240 degrees and theta = 300 degrees (since sine is negative in the third and fourth quadrants, and sin(240) = sin(300) = -sqrt(3)/2).

Therefore, the exact solutions in the interval [0 degrees, 360 degrees) are:

theta = 45 degrees, 225 degrees, 240 degrees, 300 degrees.

Step-by-step explanation:

The mixed number 1 4/10 can be decomposed as 14/10 or 1 2/5.

We may use the fact that a mixed number combines a whole number and a correct fraction to deconstruct the mixed number 1 4/10 in two different ways. So, the mixed number 1 4/10 can be represented as follows:

1 4/10 = 1 + 4/10

The sum of two fractions with a common denominator can be used to decompose this mixed number. This can be accomplished by changing the whole number 1 to a fraction with the same denominator as the fraction 4/10:

1 4/10 = 1 + 4/10 = 10/10 + 4/10 = 14/10

The sum of a whole number and a fraction that is less than one can be used to further break down this mixed number. In order to achieve this, we can take one out of the mixed number and express the resulting fraction in the simplest words possible:

1 4/10 = 1 + 4/10 = 1 + (4/10)/(10/10) = 1 + 2/5 = 1 2/5

The mixed number 1 4/10 can be broken down into 14/10 or 1 2/5 as a result.

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Answer:

improper fraction would be 3 2/3 and mixed number would be 11/3

Step-by-step explanation:

Answer:

Step-by-step explanation:

A) To find the area covered by two-way radio A, we need to calculate the area of a circle with a radius of 8 miles:

Area = πr² = 3.14 x 8² = 200.96 square miles

Rounding to the nearest whole number, two-way radio A covers 201 square miles.

B) To find the area covered by two-way radio B, we need to convert the radius from kilometers to miles and then calculate the area of a circle with that radius:

Radius in miles = 11.27 / 1.61 = 6.9988 miles (rounded to 4 decimal places)

Area = πr² = 3.14 x (6.9988)² = 153.94 square miles

Rounding to the nearest whole number, two-way radio B covers 154 square miles.

C) Two-way radio A covers a larger area than two-way radio B (201 square miles vs 154 square miles).

D) The scale factor relationship between the radio coverages can be found by dividing the radius of radio A by the radius of radio B:

Scale factor = radius of A / radius of B = 8 miles / (11.27 km / 1.61 km/mile) = 4.97

This means that the coverage of two-way radio A is almost 5 times larger than that of two-way radio B.

The standard form of the expression 9t + 6 is:

To write the expression 9t + 6 in standard form, we need to rearrange the terms so that the t-term comes before the constant term:

Therefore, the standard form of an algebraic expression is a way of writing the expression by arranging the terms in a specific order. In the case of linear expressions like 9t + 6, the standard form is to write the t-term before the constant term.

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Since each birth is independent and the probability of giving birth to a boy or a girl is equal, the probability of giving birth to a boy is 0.5, and the probability of giving birth to a girl is also 0.5.

The probability of the first baby being a boy is 0.5. The probability of the second baby also being a boy is also 0.5, since the gender of one baby does not affect the gender of the other.

The probability of both events occurring together (i.e., the probability of having two boys in a row) is equal to the product of their probabilities. Thus, the probability of having two boys in a row is 0.5 x 0.5 = 0.25 or 25%.

Since simultaneous births do not happen (i.e., babies are born one after another), the probability of the first two babies that are born being boys is the same as the probability of any two specific babies being boys. Therefore, the probability of the first two babies being boys is 0.25 or 25%.

Note that the fact that 8 out of the 17 mothers will give birth to girls is irrelevant to this particular probability problem, since we are only interested in the probability of two specific babies being boys.

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the equation [tex]r = 3 - 3cos(\theta)[/tex] is symmetric with respect to the vertical line  but not with respect to the origin or the pole .

Trigonometric functions are mathematical functions that relate the angles of a right triangle to the ratios of the lengths of its sides.  

The equation r = 3 - 3cos(θ) represents a polar curve, where r is the distance from the origin to a point on the curve, and θ is the angle between the positive x-axis and the line connecting the origin to the point.

1. Symmetry with respect to the origin: A curve is symmetric with respect to the origin if replacing (r, θ) with (-r, θ + π) gives the same curve. Substituting -r for r and θ + π for θ in the equation, we get:

[tex]-r = 3 - 3cos(\theta + \pi)[/tex]

[tex]-r = -3 - 3cos(\theta)[/tex]

[tex]r = 3 + 3cos(\theta)[/tex]

This is not the same as the original equation, so the curve is not symmetric with respect to the origin.

2.Symmetry with respect to the pole (x-axis): A curve is symmetric with respect to the pole if replacing (r, θ) with (r, -θ) gives the same curve. Substituting -θ for θ in the equation, we get:

[tex]r = 3 - 3cos(-\theta)[/tex]

[tex]r = 3 + 3cos(\theta)[/tex]

This is not the same as the original equation, so the curve is not symmetric with respect to the pole.

3.Symmetry with respect to the vertical line (y-axis): A curve is symmetric with respect to the vertical line if replacing (r, θ) with (-r, π - θ) gives the same curve. Substituting -r for r and π - θ for θ in the equation, we get:

[tex]-r = 3 - 3cos(π - \theta)[/tex]

[tex]-r = -3 + 3cos(\theta)[/tex]

[tex]r = 3 - 3cos(\theta)[/tex]

This is the same as the original equation, so the curve is symmetric with respect to the vertical line (y-axis).

Therefore, the equation  [tex]r = 3 - 3cos(\theta)[/tex] is symmetric with respect to the vertical line (y-axis) but not with respect to the origin or the pole (x-axis).

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The graph of r = 3 - 3cos(theta) is symmetric about the x-axis but not about the origin or about the y-axis.

Symmetry is described in geometry as a balanced and proportionate likeness seen in two sides of an object. It signifies that one side is a mirror image of the other. The line of symmetry is the imaginary line or axis along which you can fold a figure to obtain the symmetrical halves.

The symmetry equation is r = 3 -3 cosФ depicts a cardioid-shaped polar graph. We can use the following tests to determine symmetry:

1) We can test for symmetry with regard to the origin by seeing if the equation remains the same after substituting r with -r and Ф with Ф + pi.

r = 3 - 3cosФ - r = 3 - 3cos(Ф + pi)

3 - 3(-cos(Ф)) = r

-r = 3 + 3cos(Ф)

Because this is not equal to the original equation, the graph is not symmetric about the origin.

2) Symmetry with respect to the x-axis: We may test for symmetry with respect to the x-axis by seeing if the equation stays unchanged when theta is replaced with -theta.

r = 3 - 3cos(Ф)

r = 3 - 3cos(-Ф)

r = 3 - 3cos(Ф)

This is the same as the original equation, hence the graph is symmetric about the x-axis.

3) Symmetry with respect to the y-axis: We may test for symmetry with respect to the y-axis by seeing if the equation stays unchanged when theta is replaced with pi - theta.

r = 3 - 3cos(Ф)

r = 3 - 3cos(pi - Ф)

r = 3 + 3cos(Ф)

Because this is not equal to the original equation, the graph is not symmetric about the y-axis.

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Megan earned £158,900 before tax last year. Her total tax bill was £53,205, which was calculated by finding the tax on each part of her earnings within different tax brackets and adding them up.

A rate is a measure of how one quantity changes in relation to another quantity. It is usually expressed as a ratio of two different units, such as miles per hour or dollars per pound. Rates can be used to compare different values and to make predictions about future outcomes. Common examples of rates include interest rates, exchange rates, and tax rates.

To calculate Megan's tax bill, we need to find the tax on each part of her earnings that falls within the different tax brackets, and then add them up.

For the first £11,000 of Megan's earnings, there is no tax.

For the next £32,000 of Megan's earnings (from £11,001 to £43,000), the tax rate is 20%, so the tax on this portion of her earnings is:

0.2 x 32,000 = £6,400

For the next £107,000 of Megan's earnings (from £43,001 to £150,000), the tax rate is 40%, so the tax on this portion of her earnings is:

0.4 x 107,000 = £42,800

For the portion of Megan's earnings over £150,000, the tax rate is 45%, so the tax on this portion of her earnings is:

0.45 x 8,900 = £4,005

Therefore, Megan's total tax bill is:

£6,400 + £42,800 + £4,005 = £53,205

So, Megan paid £53,205 in total tax for the last year.

Therefore, Megan earned £158,900 before tax last year. Her total tax bill was £53,205, which was calculated by finding the tax on each part of her earnings within different tax brackets and adding them up.

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The names of the terms stated on the circle are radius = DB, chord = GE, tangent = IF and point of tangency = H

A radius is a line segment that connects the center of a circle to any point on the circle's circumference.

So, the radius is DB

A chord is a line segment that connects two points on the circumference of a circle.

So, the chord is GE

A tangent is a line that intersects a circle at exactly one point, called the point of tangency.

So, the tangent is IF and the point of tangency is H

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Answer:

y = -7x - 3

Step-by-step explanation:

The slope-intercept form of the equation of a line is:

y = mx + b where m is the slope and b is the y-intercept.

Given the slope m = -7 and the y-intercept b = -3, we can write the equation of the line in slope-intercept form as:

y = -7x - 3

Therefore, the equation of the line with slope -7 and y-intercept -3 in slope-intercept form is y = -7x - 3.

The value of the account at the end of 50 years is $432,125.19.

1. For the first 20 years:

The monthly contribution is $110, and the interest rate is 5.5% compounded monthly.

Using the formula:

FV = P  [[tex](1 + r)^n[/tex] - 1] / r

where:

FV = Future value

P = Monthly payment

r = Monthly interest rate

n = Number of months

Plugging in the values:

FV1 = $110 x [tex][(1 + 0.055/12)^{(20)(12)[/tex] - 1] / (0.055/12)

= $67,100.54

2. For the next 25 years:

The monthly contribution increases to $225, and the interest rate remains the same at 5.5% compounded monthly.

Plugging in the values:

FV2 = $225  [[tex][(1 + 0.055/12)^{(25)(12)[/tex] - 1] / (0.055/12)

= $307,527.10

3. For the last 5 years:

The monthly contribution further increases to $350, and the interest rate is still 5.5% compounded monthly. Again, we will use the same formula to calculate the future value of the contributions made during this period.

Plugging in the values:

FV3 = $350  [[tex][(1 + 0.055/12)^{(5)(12)[/tex] - 1] / (0.055/12)

       = $57,497.55

Finally, the total value of the account at the end of 50 years

Total Value = FV1 + FV2 + FV3

                    = $67,100.54 + $307,527.10 + $57,497.55

                     = $432,125.19

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Answer: x=1, y=-6

Step-by-step explanation:

YESSIR

The description table or graph or equation with the correct type of function:

Linear function table: A

Non-linear function graph: B

Linear function equation: C

Non-linear function equation: D

Linear function graph: E

Non-linear function table: F

A function is a mathematical concept that describes a relationship between two sets of values, where each input value (independent variable) corresponds to exactly one output value (dependent variable). In other words, a function is a rule or a formula that takes an input value and produces a unique output value.

Here,

The table of values shows a constant rate of change, which indicates a linear function. We can verify this by calculating the slope between any two points, which should be the same. For example, the slope between (-2, -8) and (2, 0) is (0 - (-8))/(2 - (-2)) = 8/4 = 2. So the function is of the form y = mx + b, where m = 2 and b = -4. This gives us the equation y = 2x - 4, which is a linear function. Therefore, the correct match is A.

The graph shows a curve, which indicates a non-linear function. It does not resemble a straight line, so we can eliminate linear functions. The shape of the graph suggests that it might be a quadratic function, which has a U-shaped curve. Quadratic functions can be represented by an equation of the form y = ax² + bx + c. We can't determine the equation of the function from the graph alone, but we can conclude that it is a non-linear function. Therefore, the correct match is B.

The equation 3x - 4y = 27 can be rearranged to solve for y in terms of x: y = (3/4)x - (27/4). This equation is of the form y = mx + b, where m = 3/4 and b = -27/4, which indicates a linear function. Therefore, the correct match is C.

The equation 3x² - 2x = 4y is a quadratic equation, which has a variable raised to the second power. Quadratic functions are non-linear, so the correct match is D.

The graph shows a straight line, which indicates a linear function. We can determine the equation of the line by finding the slope and y-intercept. The slope is (5 - (-1))/(2 - (-2)) = 6/4 = 3/2, and the y-intercept is -1. So the equation of the line is y = (3/2)x - 1, which is a linear function. Therefore, the correct match is E.

The table of values does not show a constant rate of change, which indicates a non-linear function. For example, between x = -2 and x = -1, y changes by 5, but between x = 0 and x = 1, y changes by only 1. This suggests that the function is not linear. We can't determine the exact form of the function from the table alone, but we can conclude that it is a non-linear function. Therefore, the correct match is F.

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The distance between the two cruise ships after 2 hours is approximately 4.201 miles.

How to find distance?

To solve this problem, we need to use trigonometry to find the distance between the two cruise ships after 2 hours.

In the diagram, A and B are the two cruise ships, and D is the distance between them after 2 hours. The angle between their paths is 35 degrees.

We can use the formula: distance = speed x time

to find how far each cruise ship travels in 2 hours. For Cruise A, the distance it travels is

[tex]distance_A = 18 \times 2 = 36 \: miles[/tex]

For Cruise B, the distance it travels is

[tex]distance_B = 15 \times 2 = 30 \: miles

[/tex]

Now we can use trigonometry to find the distance between the two cruise ships. We can use the tangent function, since we know the angle and the opposite and adjacent sides of the triangle formed by the two cruise ships and the distance between them:

tan(35°) = D / (36 - 30)

Simplifying this equation, we getting,

D = (36 - 30) x tan(35°)

D = 6 x 0.7002

D ≈ 4.201 miles

Therefore, the distance between the two cruise ships after 2 hours is approximately 4.201 miles.

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