Calculate the height of a lean-to roof that has a slanted height of 325 cm and an angle of elevation of 22 degrees. Round your answer to the nearest cm. Include a diagram.

Answer:

The decoded message is: "Steve Jobs".

Step-by-step explanation:

The given code is a sequence of binary digits, which represents the ASCII code of a message in binary form. To decode the message, we need to convert each 8-bit binary sequence into its corresponding ASCII character.

1010011 1110100 1100101 1110110 1100101 0100000 1001010 1101111 1100010 1110011

To decode this message, we split it into 8-bit sequences:

01010011 --> 'S'

01110100 --> 't'

01100101 --> 'e'

01110110 --> 'v'

01100101 --> 'e'

00100000 --> ' '

01001010 --> 'J'

01101111 --> 'o'

01100010 --> 'b'

01110011 --> 's'

Therefore, the decoded message is: "Steve Jobs".

Answer:

The decoded message is: "Steve Jobs"

Step-by-step explanation:

Converting the binary code to ASCII, we get:

01010011 = S

1110100 = t

1100101 = e

1110110 = v

1100101 = e

0100000 = (space)

1001010 = J

1101111 = o

1100010 = b

1110011 = s

So the decoded message is: "Steve Jobs"

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

Here are the steps to decode the given binary code:

Break the binary code into groups of 8 digits, as each group represents a single ASCII character.

Convert each group of 8 digits into its corresponding ASCII character using a binary-to-text converter or an ASCII code chart.

Write down the decoded ASCII characters in the order in which they appear in the original binary code.

Let's follow these steps to decode the given binary code:

The given binary code is: 1010011 1110100 1100101 1110110 1100101 0100000 1001010 1101111 1100010 1110011

We break this binary code into groups of 8 digits:

1010011 = 53

1110100 = 74

1100101 = 65

1110110 = 76

1100101 = 65

0100000 = 32

1001010 = 74

1101111 = 111

1100010 = 98

1110011 = 115

We convert each group of 8 digits into its corresponding ASCII character using an ASCII code chart:

53 = S

74 = t

65 = e

76 = v

65 = e

32 = (space)

74 = J

111 = o

98 = b

115 = s

We write down the decoded ASCII characters in the order in which they appear in the original binary code:

Decoded message: "Steve Jobs"

ASCII mean?

ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns unique numeric codes to represent text characters. The ASCII standard includes codes for uppercase and lowercase letters, digits, punctuation marks, and various other symbols. Each ASCII character is represented by a unique 7-bit binary code, allowing computers and other devices to communicate and display text in a consistent manner. The ASCII standard was first published in 1963 and has since been expanded and updated to include additional characters and support for different languages.

Answer:

55 KG

Step-by-step explanation:

To convert pounds to kilograms, we can use the conversion factor 1 kg = 2.2 lbs.So,121 lbs = (121 lbs) * (1 kg/2.2 lbs)Simplifying the expression, we have121 lbs ≈ 55.0 kgRounding to the nearest tenth, we get the final answer:121 lbs ≈ 55.0 kg

Answer:

To convert 121 pounds into kilograms, we can use the conversion factor:

1 kg = 2.2 lb

Dividing both sides of this equation by 2.2, we get:

1 lb = 0.454545 kg (rounded to the nearest tenth, this is 0.5 kg)

Therefore, we can convert 121 pounds to kilograms by multiplying by 0.454545:

121 lb * 0.454545 kg/lb = 54.884545 kg

Rounding this to the nearest tenth gives:

54.9 kg

Therefore, 121 pounds is approximately equal to 54.9 kilograms when rounded to the nearest tenth.

(a) One patient did not receive the medication.

(b) One patient did not get either the medicine or the placebo.

(c) None of the patients took the drug or experienced migraines (or both).

(d) One patient who received a placebo experienced no migraines.

A variable in algebra is an alphabet that is used to symbolize the unknowable integer. It stands in for the value. An amount that can fluctuate depending on the mathematical issue is referred to as a variable. The generic letters x, y, and z are frequently employed in mathematical expressions and equations. A variable, then, is a symbol denoting a number whose value is unknown.

from the question:

(a)

Logical expression: ∀x D(x)

Negation: ¬(∀x D(x))

Applying De Morgan's law: ∃x ¬D(x)

One patient did not receive the medication.

(b)

Logical expression: ∀x (D(x) ∨ P(x))

Negation: ¬(∀x (D(x) ∨ P(x)))

Applying De Morgan's law: ∃x ¬(D(x) ∨ P(x))

Applying De Morgan's law: ∃x (¬D(x) ∧ ¬P(x))

One patient did not get either the medicine or the placebo.

(c)

Logical expression: ∃x (D(x) ∧ M(x))

Negation: ¬∃x (D(x) ∧ M(x))

Applying De Morgan's law: ∀x ¬(D(x) ∧ M(x))

Applying De Morgan's law: ∀x (¬D(x) ∨ ¬M(x))

None of the patients took the drug or experienced migraines (or both)

(d)

Logical expression: ∀x (P(x) → M(x))

Using the conditional identity: ∀x (¬P(x) ∨ M(x))

Negation: ¬∀x (¬P(x) ∨ M(x))

Applying De Morgan's law: ∃x ¬(¬P(x) ∨ M(x))

Applying De Morgan's law: ∃x (P(x) ∧ ¬M(x))

One patient who received a placebo experienced no migraines.

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complete question;

In the following question, the domain of discourse is a set of male patients in a clinical study. Define the following predicates:

P(x): x was given the placebo

D(x): x was given the medication

M(x): x had migraines

Translate each statement into a logical expression. Then negate the expression by adding a negation operation to the beginning of the expression. Apply De Morgan's law until each negation operation applies directly to a predicate and then translate the logical expression back into English.

Sample question: Some patient was given the placebo and the medication.

∃x (P(x) ∧ D(x))

Negation: ¬∃x (P(x) ∧ D(x))

Applying De Morgan's law: ∀x (¬P(x) ∨ ¬D(x))

English: Every patient was either not given the placebo or not given the medication (or both).

(a)Every patient was given the medication.

(b)Every patient was given the medication or the placebo or both.

(c)There is a patient who took the medication and had migraines.

(d)Every patient who took the placebo had migraines. (Hint: you will need to apply the conditional identity, p → q ≡ ¬p ∨ q.)

False, the given two proportions are not equal.

In this section, the terms ratio and percentage are defined. Both ideas play a significant role in mathematics. Many examples where the notion of the ratio is highlighted may be found in daily life, such as the rate of speed (distance/time) or price (rupees/meter) of a substance.

An equation known as proportion shows that the two ratios presented are equal to one another.

The two given proportions are:

100/210 = 290/340

Simplifying the two we have:

100/210 = 10/21

290/340 = 29/34

We see that the simplified form of the two proportions are different.

Hence, False, the two proportions are not equal.

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The man's daily wage is given as follows:

$42.

The wages are obtained applying the proportions in the context of the problem.

The woman receives $24 for 8 hours of work, hence her hourly wage is given as follows:

24/8 = $3 per hour.

(Hourly wage = Total wages/total hours).

Their wages per hour are in the ratio 7:5, hence the man's hourly wage is obtained multiplying the woman's hourly wage by 7/5, hence:

7/5 x 3 = 21/5 = $4.2 per hour.

The man works 10 hours a day, hence the daily wage is given as follows, multiplying the hourly wage by 10:

10 x 4.2 = $42.

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The clerk did not give Mary any change, so that is the correct response.

A price decrease from the normal or list amount or a proportional deduction from such a debt account, typically applied in exchange for on-time or cash payments.

The total cost of the shirt and three skirts before the coupon is:

$22.65 + 3($33.31) = $122.58

With the 10% discount, the total cost becomes:

$122.58 - 0.1($122.58) = $110.32

To find out how much change the cashier gave back to Mary, we need to subtract the total cost from the amount of money Mary's mom gave her:

$100.00 - $110.32 = -$10.32

Since the result is negative, it means Mary did not have enough money to pay for her purchases and would have to give the cashier an additional $10.32 to cover the full cost of her shopping.

Therefore, the answer is that Mary did not receive any change from the cashier.

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We can state that the polynomial [tex]x^3 + 10x^2 + 13x + 36[/tex] is

factored by (x + 9).

the remainder is 0, and the quotient is [tex]x^2 + 9x + 4[/tex]. The outcome can be expressed as

[tex]x^3 + 10x^2 + 13x + 36 = (x^2 + 9x + 4)(x + 9)[/tex]

Algebraic expressions called polynomials include coefficients and variables. Indeterminates are another name for variables. For polynomial expressions, we can do mathematical operations like addition, subtraction, multiplication, and positive integer exponents but not division by variables.

Poly (which means "many") and Nominal (which means "terms") are the two terms that make up polynomials. An expression that consists of variables, constants, and exponents that are combined using mathematical operations like addition, subtraction, multiplication, and division is referred to as a polynomial (No division operation by a variable)

From the question:

We use the long division method to divide polynomials.

[tex]x^2 + 9x + 4[/tex]

_____________________________

[tex]x + 9 | x^3 + 10x^2 + 13x + 36 - (x^3 + 9x^2)[/tex]

   _________________

        [tex]x^2 + 13x - (x^2 + 9x)[/tex]

           ___________

             [tex]4x + 36 - (4x + 36)[/tex]

                  __________

                          0

the remainder is 0, and the quotient is [tex]x^2 + 9x + 4[/tex]. The outcome can be expressed as

[tex]x^3 + 10x^2 + 13x + 36 = (x^2 + 9x + 4)(x + 9)[/tex]

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Cameron can use the boards as they are for his corner shelves.

To determine if the triangular boards can be used for Cameron's corner shelves, check if they satisfy the condition for the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Let's check each combination of sides:

18 inches + 18 inches = 36 inches > 24 inches (satisfied)

18 inches + 24 inches = 42 inches > 18 inches (satisfied)

18 inches + 24 inches = 42 inches > 18 inches (satisfied)

Therefore, all three combinations of sides satisfy the triangle inequality theorem, and the triangular boards can be used for Cameron's corner shelves.

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Answer:

Step-by-step explanation:

Here are the step-by-step instructions to find the number of ear cleanings that the groomer gave:

Start with the given number of nail trims, which is 15.

Divide the number of nail trims by 5 to find out how many groups of 5 nail trims there are. This gives us: 15 ÷ 5 = 3.

Multiply the number of groups of 5 nail trims by the corresponding ratio of ear cleanings per 5 nail trims, which is 3. This gives us: 3 × 3 = 9.

This means that for every 5 nail trims, the groomer gave 3 ear cleanings, and since the groomer gave 15 nail trims, they gave 9 ear cleanings in total.

So, the pet groomer gave 9 ear cleanings in total.

Answer:

We can start by setting up a ratio of the number of fruit skewers made to the number of liters of milkshake made:

fruit skewers : milkshake = 202020 : 444

Simplifying this ratio by dividing both sides by 444, we get:

fruit skewers : milkshake = 455 : 1

This means that for every 1 liter of milkshake made, Atilio makes 455 fruit skewers. Therefore, if Atilio makes 202020 liters of milkshake, they would make:

202020 x 455 = 91919100

So, Atilio would make 91919100 fruit skewers for the party.

Step-by-step explanation:

The length of the third side is 9.

A right-angled triangle is a triangle in which one of its angles is a right angle, meaning it measures exactly 90 degrees (π/2 radians). The other two angles are acute angles, meaning they measure less than 90 degrees.

In a right-angled triangle, the side opposite the right angle is called the hypotenuse. The other two sides are called the legs. The leg opposite to an acute angle is called the opposite side, and the leg adjacent to that angle is called the adjacent side.

The Pythagorean theorem is a fundamental concept in right-angled triangles. It states that the sum of the squares of the lengths of the legs of a right-angled triangle is equal to the square of the length of its hypotenuse. This theorem is often used to calculate the length of one side of a right-angled triangle when the lengths of the other two sides are known.

Let's call the missing side of the right triangle "x". We can use the Pythagorean theorem to solve for x, which states that in a right triangle, the sum of the squares of the two shorter sides (legs) is equal to the square of the length of the longest side (hypotenuse).

So, we have:

x² + 7² = (√130)²

Simplifying:

x² + 49 = 130

x² = 81

Taking the square root of both sides, we get:

x = 9

Therefore, the length of the third side is 9.

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Answer:

The length of the third side of the given right triangle is 9 units.

Step-by-step explanation:

We can use Pythagoras Theorem to find the length of the third side of the given right triangle.

[tex]\boxed{\begin{minipage}{9 cm}\underline{Pythagoras Theorem} \\\\$a^2+b^2=c^2$\\\\where:\\ \phantom{ww}$\bullet$ $a$ and $b$ are the legs of the right triangle. \\ \phantom{ww}$\bullet$ $c$ is the hypotenuse (longest side) of the right triangle.\\\end{minipage}}[/tex]

From inspection of the given right triangle:

Substitute these values into the formula and solve for the third side, b:

[tex]\implies 7^2+b^2=\left(\sqrt{130}\right)^2[/tex]

[tex]\implies 49+b^2=130[/tex]

[tex]\implies 49+b^2-49=130-49[/tex]

[tex]\implies b^2=81[/tex]

[tex]\implies \sqrt{b^2}=\sqrt{81}[/tex]

[tex]\implies b=9[/tex]

Therefore, the length of the third side of the given right triangle is 9 units.

intercept - means to cross through

answer = a - the graph crosses the x=axis

The solution of the evaluated expression, 1 / 3 x² for x = 6 is 12.

An expression is a combination of numbers, variables and operations such as addition, subtraction, multiplication, division etc.

To evaluate an expression means to find the value of the expression when the variable is replaced by a given number.

Therefore, let's evaluate the expression as follows:

1 / 3 x² for x = 6

Hence, let's substitute the value of x in the expression.

1 / 3 (6)² = 1 / 3 (36) = 12

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Bank A's CD would earn a greater amount of interest than Bank B's CD.

The interest is greater by $369.91

To determine which CD will earn the greater amount of interest, we can calculate the interest earned by each CD over the 3-year period.

For Bank A's CD, the interest earned would be:

I = P * r * t

I = $12,000 * 0.03 * 3

I = $1,080

For Bank B's CD, the interest earned would be:

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

A = $12,000 * (1 + 0.025/12)^(123)

A = $12,710.09

The interest earned on Bank B's CD would be the difference between the total amount earned and the original principal:

I = A - P

I = $12,710.09 - $12,000

I = $710.09

Hence, Bank A's CD would earn a greater amount of interest

The interest is greater by

$1,080 - $710.09

= $369.91

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Given- The rectangle that represents the base of right rectangular prism

To find - The volume of the prism.

Explanation- we know that the volume of the right rectangular prism is product of area of rectangle and the height

Area of rectangle is [tex](lb)[/tex]

length (l) = 4.2

breadth = 3

area = 4.2×3=12.6

Volume of prism = 12.6 × height =12.6×6=75.6

Hence the volume of the prism is 75.6 in^3

Final answer - The correct option is D.

Answer:

Below

Step-by-step explanation:

Slope,m, is the 'x' coefficient =  -1   for this line   y = -x+4-2

The percentage did the total yield, by weight, of her fruit harvest declined by approximately 24%, which is option B.

what is percentage ?

Percentage is a way of expressing a number or quantity as a fraction of 100. It is often denoted by the symbol % (percent). For example, 50% means 50 out of 100, or 50/100, or the equivalent fraction 1/2.
Percentages are commonly used in many real-world situations, such as in finance, statistics, and everyday life. They are often used to express changes, differences, or ratios between two values.

According to the question:

To solve this problem, we need to calculate the total weight of fruit harvested in the first year and the total weight of fruit harvested in the second year, and then calculate the percentage decline.

Total weight of fruit harvested in the first year = 40 + 12 = 52 pounds

After a 25% decline, the weight of pears in the second year = 40 - 0.25(40) = 30 pounds

After a 20% decline, the weight of plums in the second year = 12 - 0.20(12) = 9.6 pounds

Total weight of fruit harvested in the second year = 30 + 9.6 = 39.6 pounds

Percentage decline in the total yield of fruit harvest = [(52 - 39.6)/52] x 100% = 23.8%

Therefore, the answer is approximately 24%, which is option B.

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Answer:

Step-by-step explanation:

We can use the formula:

average speed = (speed downstream + speed upstream) / 2

We are given the speed downstream is 8 miles per hour and the speed upstream is 2 miles per hour. Therefore,

average speed = (8 + 2) / 2 = 5 miles per hour

So the answer is (B) 5.0 miles per hour to the nearest tenth.

Your number line can be broken apart by using a measuring thing like a scale.

What is a number line?

By aligning the numbers on a line, a number line allows you to visualize the size of the numbers. Typically horizontal in shape, a number line has zero in the center. The numbers are increasing and positive as you move to the right. The numbers rise and become more and more negative as you move to the left.

Why do we need a number line?

Number lines offer a method for mentally adding and subtracting. It's simple to imagine them as a type of support system for those in need, but this is untrue. These are crucial because they encourage effective mental arithmetic techniques, according to research.

So by using a scale you can measure the distance accurately and place the numbers in accurate positions.

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We need a retirement fund balance of  $714,285.71 in 25 years to generate an annual income of $50,000 at a constant APR of 7%.

percentage, a relative value indicating hundredth parts of any quantity.

To generate an income of $50,000 per year forever, we need to create a retirement fund that can generate this income through interest and not deplete the principal amount.

We can use the following formula to calculate the required balance in the retirement fund:

Balance = Annual income / Annual interest rate

The annual income we need is $50,000, and the annual interest rate is 7%, so we can calculate the required balance as:

Balance = $50,000 / 0.07

= $714,285.71

Therefore, we need a retirement fund balance of  $714,285.71 in 25 years to generate an annual income of $50,000 at a constant APR of 7%.

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The solution to the system of linear equations,

2x - y = - 22 and - 7x + y = 67 is x = - 9 and y = 4.

If a system of equations only contains two linear equations with two variables, the system's equation can be graphed, the graph will have two straight lines, and the intersection point(s) of those lines will be the system's solution.

Given, Two linear equations 2x - y = 22 and y = 7x + 67 in two variable 'x' and 'y'.

Arranging the equation in a similar pattern we have,

2x - y = - 22 and - 7x + y = 67.

Now, Adding these two equations +y and -y will cancel out,

So, We have - 5x = 45.

x = - 9, and 2(-9) - y = - 22 ⇒ y = 4.

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Therefore, there are 278,256 different ways for 5 students to form a group from a class of 34 students.

Factorial, followed by an exclamation point, is the sum of all positive integers that are less than or equal to a specific positive integer in mathematics. Factorial seven is therefore represented by the symbol 7!, which is made up of the letters 1 2 3 4 5 and 7. By definition, factororial 0 is equal to 1.

The number of ways to form a group of 5 students out of a class of 34 students can be calculated using the combination formula:

C(34, 5) = 34! / (5! (34-5)!) = (34 × 33 × 32 × 31 × 30) / (5 × 4 × 3 × 2 × 1) = 278,256.

Therefore, there are 278,256 different ways for 5 students to form a group from a class of 34 students.

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In a right triangle, the tangent of an acute angle is the ratio of the length of the opposite side to the length of the adjacent side, the sine of an acute angle is the ratio of the length of the opposite side to the length of the hypotenuse, and the cosine of an acute angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Using the side lengths given in the problem, we can identify that angle B is the acute angle opposite the side with length 5.

So, we have:

tanB = opposite/adjacent = 12/5

sinB = opposite/hypotenuse = 12/13

cosB = adjacent/hypotenuse = 5/13

Therefore, the values of the trigonometric functions for angle B in this right triangle are:

tanB = 12/5

sinB = 12/13

cosB = 5/13

To find the circle with center (3, -4) and radius 64, we again replace 64 with 64² in the equation, and get:

(x - 3)² + (y + 4)² = 4096

Several everyday items, such as turning ceiling fans, turning car wheels, spinning windmill blades, and turning gas turbine gears, exhibit circular motion. Another is an earth-orbiting satellite that was built by people.

The equation (x + 3)² + (y - 4)² = 64 represents a circle with center (-3, 4) and radius 8.

To find the circle with center (-3, 4) and radius 64, we replace 64 with 64² in the equation and get:

(x + 3)² + (y - 4)² = 4096

This circle has center (-3, 4) and radius 64.

To find the circle with center (3, -4) and radius 8, we replace (x + 3) with (x - 3) and (y - 4) with (y + 4) in the equation, and get:

(x - 3)² + (y + 4)² = 64

This circle has center (3, -4) and radius 8.

To find the circle with center (3, -4) and radius 64, we again replace 64 with 64² in the equation, and get:

(x - 3)² + (y + 4)² = 4096

This circle has center (3, -4) and radius 64.

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Answer:

x=3

Step-by-step explanation:

Let's assume that the customer ordered x burrito bowls.

The cost of x burrito bowls at $6.50 each is 6.50x.

The cost of the plate of corn tacos is $12.96.

The total cost of the order is $32.46.

So we can set up the equation:

6.50x + 12.96 = 32.46

Subtracting 12.96 from both sides, we get:

6.50x = 19.50

Dividing both sides by 6.50, we get:

x = 3

Therefore, the customer ordered 3 burrito bowls.

Answer:

The scale of measurement used by the researcher is interval scale as the data is continuous and there are equal intervals between the values.

Mean = (1+2+4+5+7+11)/6 = 5

Median = (4+5)/2 = 4.5

Mode = There is no mode in the data set as none of the numbers are repeated.

Range = maximum value - minimum value = 11 - 1 = 10

Sample Variance = ((1-5)^2 + (2-5)^2 + (4-5)^2 + (5-5)^2 + (7-5)^2 + (11-5)^2)/(6-1) = 14.67

Standard Deviation = sqrt(sample variance) = sqrt(14.67) = 3.83

Mean + 2SD = 5 + 2*3.83 = 12.66, rounded to the nearest integer = 13.

According to the Empirical Rule, 68% of the sample lies within 1 standard deviation of the mean. Therefore, we need to find the values that are 1 standard deviation away from the mean:

Lower limit = Mean - SD = 5 - 3.83 = 1.17, rounded to the nearest integer = 1.

Upper limit = Mean + SD = 5 + 3.83 = 8.83, rounded to the nearest integer = 9.

So the number of leaves associated with 68% of the sample is between 1 and 9.

Step-by-step explanation:

As a consequence, in a triangle with angles 30-60-90 and legs 6 long and x short, x is equal to 2√3  and y is equal to 12.

Three-sided polygons, which are closed plane figures with straight edges, include triangles. One of the most fundamental and significant geometric and mathematical shapes, triangles have a wide range of useful characteristics and applications. Typically, a, b, and c are used to denote the triangle's three edges, and A, B, and C are used to denote the triangle's three angles. A triangle's inner angles are always added up to 180 degrees.

given

The percentage of the side lengths in a triangle with sides of 30-60-90 is:

Hypotenuse Means 1: Long leg: Short leg: 3: 2

In this quadrilateral, we have the following:

Hypotenuse = y; short limb = x; long leg = 6.

With the number mentioned above, we can write:

x : 6 : y = 1 : √3 : 2

For x and y, we can use cross-multiplication to get the following result:

x/1 = 6/√3

y/2 = 6/1

When we simplify these formulae, we obtain:

x = 6/√3 = 2√3

y = 12

As a consequence, in a triangle with angles 30-60-90 and legs 6 long and x short, x is equal to 2√3  and y is equal to 12.

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The monthly payments are $248.53.

The total amount that he will pay $14911.8.

The amount of interest is $4911.8

What is the interest rate?

The amount of interest due each period expressed as a percentage of the amount lent, deposited, or borrowed is known as an interest rate. The total interest on a loaned or borrowed sum is determined by the principal amount, the interest rate, the frequency of compounding, and the period of time the loan, deposit, or borrowing took place.

The formula of monthly payment is

P = [tex]\frac{r (PV)}{1-(1-r)^{-n}}[/tex]

r is the rate of interest.

PV is the present value

n is the number of terms.

The bank offers you an installment loan with an interest rate of 17% over a 60-month term. The cost of the car is $10,000.

PV = $10,000

n = 60

r = 17%/12 = 0.17/12

The monthly installment is

P = [tex]\frac{ \frac{0.17}{12}\times 10000}{1-(1- \frac{0.17}{12})^{-60}}[/tex]

P = 248.53

The monthly installment is $248.53.

Total payment is (60 ×$248.53) = $14911.8

The interest is $(14911.8 - 10000) = $4911.8

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Answer:

Rosa must save at least $85 to purchase a new MP3 player.

The word "at least" indicates that the amount Rosa needs to save is not less than $85, but it could be more than $85.

Therefore, the inequality that represents the amount of money Rosa must save is:

C) m ≥ 85

This is because the amount Rosa saves, represented by "m", must be greater than or equal to $85 in order to afford the MP3 player.