how do i answer this

How Do I Answer This

Answers

Answer 1

The mass of the solid copper cuboid with dimensions length = 10cm, breadth = 5cm, and height = 3cm, is 1.479 kg.

What is a Cuboid?

A cuboid is a three-dimensional geometric shape that has six rectangular faces. It is also known as a rectangular parallelepiped. A cuboid has six rectangular faces, where opposite faces are congruent and parallel. The cuboid has eight vertices, twelve edges, and six rectangular faces.

How to Calculate Mass of a Cuboid?

To calculate the mass of a cuboid, you need to know its volume and density. The volume of a cuboid is the product of its length, width, and height. The density of a material is its mass per unit volume. Once you have these values, you can use the following formula to calculate the mass of the cuboid:

Mass = Density x Volume

where Mass is the mass of the cuboid, Density is the density of the material of which the cuboid is made, and Volume is the volume of the cuboid.

In the given question,

Using the given values, we can now calculate the mass of the solid copper cuboid in kg.

The volume of the copper cuboid is:

Volume = Length × Breadth × Height = 10 cm × 5 cm × 3 cm = 150 cm³

The mass of the copper cuboid can be calculated by multiplying its volume with its density. We are given that the density of copper is 9.86 g/cm³. Therefore, we have:

Mass = Volume × Density = 150 cm³ × 9.86 g/cm³ = 1479 g

To convert the mass in grams (g) to kilograms (kg), we need to divide the mass by 1000. Therefore:

Mass in kg = Mass in g / 1000 = 1479 g / 1000 = 1.479 kg

Therefore, the mass of the solid copper cuboid with dimensions length = 10cm, breadth = 5cm, and height = 3cm, is 1.479 kg.

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Related Questions

The code for a lock consists of 4 digits. The last number cannot be 0 or 1. How many different codes are possible?

Answers

The total number of codes possible is 9 × 10 × 10 × 8.

To find the total number of codes possible, we need to multiply the number of choices for each digit.

For the first digit, there are 9 choices (0 is not allowed).

For the second and third digits, there are 10 choices each (0-9).

For the last digit, there are 8 choices (0 and 1 are not allowed).

So the total number of codes possible is 9 × 10 × 10 × 8 = 7200.

Therefore, there are 7200 different codes possible for the lock.

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Identify the initial value and rate of change for the graph shown. (4 points) A coordinate plane graph is shown. A line passes through the y-intercept at 1 and through the point 5 comma 4. a Initial value: 1, rate of change 3 over 5. b Initial value: 3 over 5., rate of change: 0 c Initial value: 1, rate of change 5 over 3. d Initial value: 5 over 3., rate of change: 0

Answers

The correct answer is c: Initial value: 1, rate of change 5 over 3. In this case, the change in y is 3 (from 1 to 4) and the change in x is 5 (from 0 to 5).

What is a linear equation?

A linear equation is an equation that describes a straight line when it is graphed. It has the form y = mx + b, where m is the slope of the line and b is the y-intercept. Linear equations are used to describe many real-world situations, such as the height of a ball thrown in the air, the distance traveled by a car, or the height of a person over time.

This question is asking for the initial value and rate of change for a linear equation. The initial value is the y-intercept, which is the point at which the line crosses the y-axis. In this case, the y-intercept is 1, so the initial value is 1. The rate of change is the slope of the line, which can be found by calculating the change in y over the change in x. In this case, the change in y is 3 (from 1 to 4) and the change in x is 5 (from 0 to 5). Therefore, the rate of change is 5 over 3, so the correct answer is c: Initial value: 1, rate of change 5 over 3.

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Suppose you applied for positions at four different companies and let X be the number of offers you received.



a- Find the mean

b- standard deviation


of the number of offers you received. Round your answer to two decimal places

Answers

The answer of the number of offers you received are as follow,

1. Mean is equal to 1.96.

2. Standard deviation is equal to 1.17 (rounded to two decimal places) .

1.Mean (or expected value) is represented by E(X)

Formula of the expected value is,

E(X) = ∑xP(x)

Substitute the value from the table we get,

⇒E(X) = (0)(0.19) + (1)(0.12) + (2)(0.38) + (3)(0.16) + (4)(0.15)

⇒E(X)  = 0 + 0.12 + 0.76 + 0.48 + 0.6

⇒E(X)  = 1.96

2. Standard deviation of the number of offers received ,

⇒ Standard deviation 'σ' = √[ Σ(x - E(X))² P(x) ]

Substitute the values from the table we get,

⇒ Standard deviation 'σ'

= √[ (0 - 1.96)² (0.19) + (1 - 1.96)² (0.12) + (2 - 1.96)² (0.38) + (3 - 1.96)²(0.16) + (4 - 1.96)²(0.15) ]

= √[ 1.3728 ]

≈ 1.171665

≈1.17(rounded to two decimal places)

Therefore, the mean and the standard deviation of the number of offers received is approximately 1.96 and 1.17 (rounded to two decimal places) respectively.

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The above question is incomplete, the complete question is:

Suppose you applied for positions at four different companies and let X be the number of offers you received

X      :            0               1               2               3                4

P(x)  :             0.19         0.12           0.38         0.16            0.15

1.  Find the mean

2.  standard deviation

of the number of offers you received. Round your answer to two decimal places

he weighs 280 lbs. After 6 months, he now weighs 238 lbs. By what percent did his weight decrease?

Answers

The  percent decrease in student's weight is 15%.

To calculate this, take the difference between his starting and ending weight and divide it by his starting weight. Multiply the result by 100 to express it as a percent.


To find the percent decrease in his weight, we can use the formula:
percent decrease = (original weight - new weight) / original weight * 100

First, let's plug in the given values:
percent decrease = (280 - 238) / 280 * 100

Next, we can simplify the numerator:
percent decrease = 42 / 280 * 100

Then, we can divide 42 by 280 to get 0.15:
percent decrease = 0.15 * 100

Finally, we can multiply 0.15 by 100 to get the percent decrease:
percent decrease = 15%

Therefore, his weight decreased by 15%.

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Help with geometry. How would I solve this problem with parallelograms?

Answers

Answer:

  see attached

Step-by-step explanation:

Given some of the angles in a parallelogram with diagonals shown, you want the measures of missing angles.

Missing angles

The measures of missing angles are found by making use of triangle and parallelogram angle relations:

the sum of angles in a triangle is 180°alternate interior angles are congruentangles of a linear pair are supplementaryadjacent angles of a parallelogram are supplementaryan exterior angle is equal to the sum of the remote interior angles

In the attached diagram, the given angles are shown in red. The requested angles are shown in blue.

  ∠BDC = 40°, congruent to alternate interior angle ABD

  ∠DEA = 78°, supplementary to adjacent angle AEB

  ∠BDA = 70°, congruent to alternate interior angle DBC

  ∠BCD = 70°, supplementary to adjacent angle ABC = 40°+70°.

We can see here that solving the parallelogram, we have:

∠BDC = 40°, congruent to alternate interior ∠ABD ∠BDA = 70°, congruent to alternate interior ∠DBC ∠DEA = 78°, supplementary to adjacent ∠AEB∠BCD = 70°, supplementary to adjacent ∠ABC = 40°+70°.

What is a parallelogram?

A parallelogram is a quadrilateral (a polygon with four sides) in which opposite sides are parallel to each other. This means that the opposite sides of a parallelogram have the same slope and will never intersect, even if extended infinitely.

A parallelogram has four sides, four angles, and two pairs of opposite sides that are equal in length. The opposite angles of a parallelogram are also equal in measure.

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16. Write the product as a sum: 7 cos(6x)cos (7x) 17. Write the sum as a product: sin (2x) -sin (7x)

Answers

16. The expression of the product as a sum: 7 cos(6x)cos(7x) = 7/2 * (cos(13x) + cos(x))
17. The expression of the sum as a product: sin(2x) - sin(7x) = -2 cos(9x/2) sin(5x/2)

The product as a sum can be written using the formula for the product of two cosines:

cos a * cos b = 1/2 * (cos(a + b) + cos(a - b))

Using this formula, we can write the product 7 cos(6x)cos(7x) as a sum:

7 cos(6x)cos(7x) = 7/2 * (cos(6x + 7x) + cos(6x - 7x))
= 7/2 * (cos(13x) + cos(-x))
= 7/2 * (cos(13x) + cos(x))


The sum as a product can be written using the formula for the difference of two sines:

sin a - sin b = 2 cos((a + b)/2) sin((a - b)/2)

Using this formula, we can write the sum sin(2x) - sin(7x) as a product:

sin(2x) - sin(7x) = 2 cos((2x + 7x)/2) sin((2x - 7x)/2)
= 2 cos(9x/2) sin(-5x/2)
= 2 cos(9x/2) (-sin(5x/2))
= -2 cos(9x/2) sin(5x/2)

So the final answers are:
7 cos(6x)cos(7x) = 7/2 * (cos(13x) + cos(x))
sin(2x) - sin(7x) = -2 cos(9x/2) sin(5x/2)

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Let \( \vec{a}=\langle 1,-3\rangle \) and \( \vec{b}=\langle 3, k\rangle \). Find \( k \) so that \( \vec{a} \) and \( \vec{b} \) will be orthogonal (form a 90 degree angle). \( k= \) Question Help: Mesege instructor

Answers

The value of \( k \) that makes \( \vec{a} \) and \( \vec{b} \) orthogonal is \( k=1 \).

Two vectors are orthogonal if their dot product is zero. The dot product of two vectors \( \vec{a}=\langle a_1,a_2\rangle \) and \( \vec{b}=\langle b_1,b_2\rangle \) is given by \( \vec{a}\cdot\vec{b}=a_1b_1+a_2b_2 \).

In this case, we have \( \vec{a}=\langle 1,-3\rangle \) and \( \vec{b}=\langle 3, k\rangle \). So the dot product is:

\( \vec{a}\cdot\vec{b}=(1)(3)+(-3)(k)=3-3k \)

We want this dot product to be zero, so we can set it equal to zero and solve for \( k \):

\( 3-3k=0 \)

\( 3k=3 \)

\( k=1 \)

Therefore, the value of \( k \) that makes \( \vec{a} \) and \( \vec{b} \) orthogonal is \( k=1 \).

Answer: \( \boxed{k=1} \).

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Write a number to complete each sentence. The polynomial 7x^(7)-9x^(5)+3x^(4)+12x+1 has roots.

Answers

The polynomial 7x^(7)-9x^(5)+3x^(4)+12x+1 has four roots. Roots are the values of x that make the polynomial equal to zero. To find these values, one can use a variety of methods, such as factoring, graphing, and the quadratic formula.

Factoring is the simplest method to use, and it involves breaking the polynomial down into simpler terms. In this case, the polynomial can be broken down into the product of two linear polynomials (7x^(7)-9x^(5) and 3x^(4)+12x+1). By setting each factor equal to zero and solving for x, you can find the roots.

Graphing is also a useful tool for finding the roots of a polynomial. By graphing the polynomial, you can see the x-intercepts, which are the values at which the graph crosses the x-axis. These are the roots.

Finally, the quadratic formula can be used to find the roots of this polynomial. This formula is a general solution for any quadratic equation, and it can be applied to the polynomial by replacing the coefficients of x^2 with those of x^7 and solving for x.

In conclusion, the polynomial 7x^(7)-9x^(5)+3x^(4)+12x+1 has four roots. These can be found using factoring, graphing, or the quadratic formula.

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Create Frequency tables to represent the morning and afternoon dogs as two sets of data. Group the weights into classes that range 10 pounds. Josue's Dogs

Answers

The frequency of a repeated event is its number of instances for every unit of time. In below given way frequency table can be constructed.

What is frequency?

The frequency of a repeated event is its number of instances for every unit of time. It differs from angular frequency and is sometimes made reference to as temporal resolution for clarification. The unit of frequency is hertz (Hz), or one occurrence per second.

The time elapsed between events is measured by the period, which is the opposite of the frequency. For instance, the period, T—the time between beats—is equal to half a second if a heart beats 120 times per minute. Frequency tables to represent the morning and afternoon dogs as two sets of data are:

range        frequency

0- 9             2

10- 19           3

20-29         1

30-39         2

40-49         1

50-59         1

Therefore, in above given way frequency table can be constructed.

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2. In how many ways can the 18 members of a Boy Scout troop elect a president, a vice-president, and a secretary, assuming that no member can hold more than one office?
3. If a family has three children, find the probability that the two of the children are girls?
4. In how many ways can we seat 7 people at a round table with a certain 3 people side by side?
5. In testing an HP printer, the Quality Inspector found that 25% of the printers fail to pass the test
print. Of the next 15 printers tested, find the probability that fewer than 4 fail to pass the test print.

Answers

1. There are 4896 possible ways for the 18 members of a Boy Scout troop to elect a president, a vice-president, and a secretary, assuming that no member can hold more than one office.

2. The probability that two of the three children are girls is 3/8.

3. There are 144 possible ways to seat 7 people at a round table with a certain 3 people side by side.

4. The probability that fewer than 4 out of the 15 printers tested fail to pass the test print is 0.8539.

1. The number of ways to elect a president, vice-president, and secretary from 18 members is 18 * 17 * 16 = 4896. This is because there are 18 choices for president, 17 choices for vice-president (since one person has already been chosen for president), and 16 choices for secretary (since two people have already been chosen for the other offices).

2. The probability of having two girls out of three children is 3/8. This is because there are eight possible outcomes for the genders of three children (BBB, BBG, BGB, GBB, GGB, GBG, BGG, GGG), and three of these outcomes have two girls (BBG, BGG, GBG).

3. The number of ways to seat 7 people at a round table with a certain 3 people side by side is 4! * 3! = 144. This is because there are 4! ways to arrange the other 4 people around the table, and 3! ways to arrange the 3 people who are side by side.

4. The probability that fewer than 4 out of 15 printers fail to pass the test print is 0.8539. This can be found using the binomial probability formula: P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = (15 choose 0)(0.25^0)(0.75^15) + (15 choose 1)(0.25^1)(0.75^14) + (15 choose 2)(0.25^2)(0.75^13) + (15 choose 3)(0.25^3)(0.75^12) = 0.8539.

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"1.find the result of 4/5-1/3-1/15
a.1/5
b. 2/3
c. 7/15
d. 3/4
e.4/5"

Answers

Answer:

See below.

Step-by-step explanation:

We are asked to find the result of the expression.

We have 3 proper fractions, and they don't have a common denominator.

Meaning, that in order to simply subtract the Numerators, we should have the same Denominator for each.

We can find the Denominator simplify by finding the LCM.

What is the Least Common Multiple (LCM)?

The LCM is the smallest multiple that 2 or more numbers share.

We can easily find the LCM by making a list of numbers that adds the number to itself. The previous explanation is simpler, but what really is happening is we're multiplying the number with a number that grows by 1 each time; A common multiple.

The list should look like;

[tex]4; 4 \times 1 ,\ 4 \times 2, \ 4 \times 3, \ 4 \times 4, \ 4 \times 5, \ 4 \times 6, \ 4 \times 7.\\4; 4, 8, 12, 16, 20, 24, 28.[/tex]

Let's find the LCM of 5, 3, and 15:

[tex]5; 5, 10, [15], 20, 25\\3; 3, 6, 9, 12, [15]\\15; [15], 30, 45, 60, 75[/tex]

These numbers share a LCM of 15.

Multiply the fractions by setting up a proportion:

[tex]\frac{4}{5} -\frac{1}{3} -\frac{1}{15} \\\frac{4 \times 3}{5 \times 3} = \frac{12}{15} \checkmark \\\frac{1 \times 5}{3 \times 5} = \frac{5}{15} \checkmark\\\frac{1}{15} \ stays \frac{1}{15} \checkmark[/tex]

Subtract:

[tex]\frac{12}{15} - \frac{5}{15} - \frac{1}{15} = \frac{6 \div 3}{15 \div 3} = \frac{2}{5} .[/tex]

Your final answer is [tex]\frac{2}{5} .[/tex]

The correct answer is c. 7/15.

To find the result of 4/5 - 1/3 - 1/15, you need to first find a common denominator for all three fractions. The smallest common denominator for these fractions is 15.

Next, you need to convert each fraction to an equivalent fraction with a denominator of 15.

4/5 = 12/15
1/3 = 5/15
1/15 = 1/15

Now you can subtract the numerators of each fraction and keep the common denominator of 15.

12/15 - 5/15 - 1/15 = 6/15 - 1/15 = 5/15

Finally, you can simplify the fraction by dividing both the numerator and denominator by their greatest common factor, which is 5.

5/15 = 1/3

So the result of 4/5 - 1/3 - 1/15 is 7/15, which is answer choice c.

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Complete a dilation with scale factor of 1/2 around the origin and then reflect over the y-axis. What are the new ordered pair of A’?

Answers

The new ordered pair of A’ are (-1, -2.25). Hence the correct option is b.

What are cο-οrdinates?

A cοοrdinate system in geοmetry is a technique that uses οne οr mοre integers οr cοοrdinates tο establish the accurate pοsitiοning οf geοmetrical οbjects οn a manifοld, such as Euclidean space. When lοcating a pοint οr οbject οn a twο-dimensiοnal plane, cοοrdinates—pairs οf numbers—are utilized.

The x and y cοοrdinates serve as a representatiοn οf a pοint's lοcatiοn οn a 2D plane. a grοup οf numbers used tο denοte certain lοcatiοns. The figure usually cοnsists οf twο integers. The frοnt-tο-back and tοp-tο-bοttοm distances are represented by the first and secοnd numbers, respectively. When there are 12 units belοw and 5 abοve, as in (12.5), the ratiο is 1.

Tο cοnduct a dilatiοn with a scale factοr οf 1/2 arοund the οrigin, multiply each pοint's cοοrdinates by 1/2. If the initial cοοrdinates οf pοint A are (x, y), then the dilated pοint A' cοοrdinates are:

A' = (1/2 * x, 1/2 * y)

We negate the x-cοοrdinate while keeping the y-cοοrdinate cοnstant tο represent the dilated pοint A' οver the y-axis. As a result, the final cοοrdinates οf A" are:

A'' = (-1/2 * x, 1/2 * y)

As a result, Anew "'s οrdered pair is (1/2 * x, 1/2 * y)

= ((1/2 × -2), (1/2 × -5))

= (-1, -2.25)

Thus, the new ordered pair of A’ are (-1, -2.25). Hence the correct option is b.

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may someone please give me the answer to this question?

Answers

Answer:

[tex]\huge\boxed{\sf 116\ in.\²}[/tex]

Step-by-step explanation:

The composite figure is made up of two shapes.

RectangleSemicircleArea of rectangle:

= Length × Width

Where L = 13 in., W = 7 in.

= 13 × 7

= 91 in.²

Area of semi-circle:

[tex]\displaystyle =\frac{\pi r^2}{2} \\\\\underline{Where \ r:}\\\\= \frac{13-5}{2} \\\\= \frac{8}{2} \\\\= 4 \ in.\\\\So,\ the \ above\ equation \ becomes\\\\= \frac{(3.14)(4)^2}{2} \\\\= \frac{(3.14)(16)}{2} \\\\= (3.14)(8)\\\\= 25.13 \ in.^2[/tex]

Area of composite figure:

= Area of rectangle + Area of semi-circle

= 91 + 25.13

= 116.13 in.²

≈ 116 in.²

[tex]\rule[225]{225}{2}[/tex]

The measures of two supplementary angles are m

Answers

The addition of the two supplementary angles will be equal to 180 degrees,

What is an angle?

The tilt is the partition caught between lines, surfaces, or vectors that intersect. Degrees are another mode to reveal the slant. For a full rotation, the arc is 360°.

A tilt is a figure in Geometric shapes created by two rays, called the flanks of the arc, that share a common termination, called the apex of the angle.

Two slants are said to be supplementary tilts if their totality is 180 degrees.

Let ∠1 and ∠2 be the supplementary angles. Then the equation is written as,

∠1 + ∠2 = 180°

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Let u = 2i + 3j and v = 4i + B j. Determine B such that:
a.) u and v are orthogonal.
b.) u and v are parallel.
c.) the angle between u and v is π/6

Answers

a) B = -8/3.

b) B = 3.

c) B = √(13 - 8) = √5.

a), u and v are orthogonal if and only if their dot product is 0. To calculate the dot product, multiply the corresponding components of u and v and then add them together. Therefore, u · v = 2i · 4i + 3j · Bj = 8 + 3B = 0, so B = -8/3.

b), u and v are parallel if and only if all components are equal. Therefore, 2i = 4i and 3j = Bj. To solve for B, we have B = 3.

c), the angle between u and v is π/6 if and only if their dot product is equal to the product of their magnitudes. The magnitude of u is |u| = √(2^2 + 3^2) = √13 and the magnitude of v is |v| = √(4^2 + B^2) = √(16 + B^2). To solve for B, we have u · v = √13 · √(16 + B^2) = 2cos(π/6), so B = √(13 - 8) = √5.

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 can someone help me with these two questions I don’t need any explanation just answer and I would really appreciate you.

Answers

(a) m∠BAC = 73°

(b) The value of y is 2.

What is an isosceles triangle?

A triangle that has two equal lengths of sides and two equal measures of angles is called an isosceles triangle.

(a) Given:

m∠BEA = 62°.

Assuming ABCD is a square.

The diagonal of the square divides the square into two isosceles right-angled triangles.

So, m∠BAD = 90° and m∠ABD = m∠ADB = m∠ABE = 45°.

So, the angle measure of ∠BAC,

m∠BAC = 180° - (45 + 62)

m∠BAC = 180° - 107°

m∠BAC = 73°

(b) Given:

BE = 6y + 2 and CE = 4y + 6.

Assuming ABCD is a square.

The diagonals of squares divide the diagonals into two equal parts.

So, BE = CE

6y + 2  = 4y + 6.

2y = 4

y = 2

Therefore, the value of y is 2.

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The question is in the screenshot:

Answers

the complete question in the attached figure

Part 1) find sec (theta)

we know that

sec (theta)=1/ cos (theta)

cos (theta)=adjacent side angle theta/hypotenuse

adjacent side angle theta=5

hypotenuse=13

so

cos (theta)=5/13

sec (theta)=1/(5/13)-------> sec (theta)=13/5

the answer Part 1) is

sec (theta) = 13/5

Part 2)simplify sec(theta)*cos (theta)

sec (theta)=13/5

cos (theta)=5/13

so

sec(theta)*cos (theta)=(13/5)*(5/13)----> 1

the answer part 2) is 1

Part 3)simplify cot(theta)/cos(theta)

cot (theta)=5/12

cos (theta)=5/13

so

cot(theta)/cos(theta)=(5/12)/(5/13)----> 13/12

we know that

sin (theta)=opposite angle theta/hypotenuse

opposite side angle theta=12

hypotenuse=13

sin (theta)=12/13

csc (theta)=1/sin (theta)------> csc (theta)=1/(12/13)----> csc (theta)=13/12

therefore

cot(theta)/cos(theta)=csc (theta)

the answer Part 3) is

csc (theta)

Part 4)simplify cot(theta)*sin(theta)

cot (theta)=5/12

sin (theta)=12/13

so

cot(theta)*sin(theta)=(5/12)*(12/13)----> 5/13

cos (theta) =5/13

therefore

cot(theta)*sin(theta)=cos (theta)

the answer part 4) is

cos (theta)

Regular hexagon ABCDEFG in inscribed into circle O and AB=8cm. Calculate each of the following:

(a)What is the radius of circle O

(b)What is the area of circle O

(c)What is m
(d)What is m
(e)What is the measure of arc AB

(f)What is the measure of arc ACE

(g)What is the length of arc AB

(h)What is the area of sector AOB

Answers

From the diagram of a Regular hexagon ABCDEFG in inscribed into circle O, we can state that the radius of circle O is 8/√3 cm

How to calculate radius, area and arc of the diagram?

1. (a) The radius of circle O is equal to the length of OB, which is also equal to the length of OA.

Since OA = OB = OC, and OC is the perpendicular bisector of AB, triangle OAB is equilateral.

Thus, using the formula for the length of the side of a regular hexagon, we get:

AB = 8cm

OA = OB = OC = AB/√3

OA = OB = OC = 8/√3 cm

Radius of circle O = OA = OB = OC = 8/√3 cm

We only need to focus on triangle AOB to calculate the radius of the circle.

Since OA, OB, and AB are all known (OA and OB being equal to each other, and AB being given as 8 cm), we can use the Pythagorean theorem to solve for the length of AO (which is the same as the length of BO), and hence the radius of the circle.

b. The area of circle O can be calculated using the formula:

Area = πr²

Area = π(8/√3)²

Area = 64π/3 square cm.

The measure of arc AB is equal to twice the measure of angle BOC, since arc AB subtends angle BOC:

m(arc AB) = 2m∠BOC

m(arc AB) = 2(60°)

m(arc AB) = 120°f.

The measure of arc ACE is equal to the sum of the measures of angles BOC and COE, since arc ACE subtends both of these angles:

m(arc ACE) = m∠BOC + m∠COE

m(arc ACE) = 60° + 60°

m(arc ACE) = 120°g.  

The length of arc AB is equal to the circumference of circle O times the fraction of the circle subtended by arc AB:

Length of arc AB = (m(arc AB)/360°) x 2πr

Length of arc AB = (120°/360°) x 2π(8/√3) cm

Length of arc AB = (1/3) x (16π/√3) cm

Length of arc AB = (16π)/(3√3) cm.

The area of sector AOB is equal to the fraction of the circle subtended by arc AB times the area of circle O:

Area of sector AOB = (m(arc AB)/360°) x πr²

Area of sector AOB = (120°/360°) x π(8/√3)^2 cm²

Area of sector AOB = (1/3) x (64π/3) cm²

Area of sector AOB = 64π/9 square cm

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Which shape possesses a set of parallel cross sections that are congruent circles

Answers

The shape with a series of parallel cross sections that are congruent circles is a cylinder.

The cross-section that results from cutting a cylinder parallel to its base is a circle that is congruent to all other parallel cross-sections. This is true for any plane that is perpendicular to the cylinder's base. The only shape that has parallel cross-sections that are congruent circles is a cylinder, for this reason.

Two parallel, congruent circular bases that lay on the same plane make up the three-dimensional shape of a cylinder. A curved rectangle connecting the bases makes up the cylinder's lateral surface. Congruent circles are produced when a cylinder is cut in half parallel to its base.

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what is the 20th term of the sequence 1,3,9,27

Answers

Answer:

1162261467

Step-by-step explanation:

Note that this is a geometric sequence.

1,3,9,27
The pattern is to multiply the number by 3 to get to the next term.
a = 1

r = 3

n=20

arⁿ⁻¹ = nth term

You then substitute the values of a,r and n into the nth term:

arⁿ⁻¹=3¹⁹

3¹⁹=1162261467 which is the 20th term of the sequence

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Answer:

To find the 20th term of the sequence 1, 3, 9, 27, we need to first identify the pattern of the sequence. It appears that each term of the sequence is obtained by multiplying the previous term by 3. This means that the sequence is a geometric sequence with first term (a) = 1 and common ratio (r) = 3.

Using the formula for the nth term of a geometric sequence:

an = a * r^(n-1)

where an is the nth term of the sequence, a is the first term, r is the common ratio, and n is the term number.

Substituting the values we have:

a = 1, r = 3, and n = 20

an = 1 * 3^(20-1) = 1 * 3^19 = 1162261467

Therefore, the 20th term of the sequence 1, 3, 9, 27 is 1162261467.

Step-by-step explanation:

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which equation represents the rule

Answers

The equation that represents a linear function rule for the following set of ordered pairs is  A. y = -3x + 2

How can the equation that represents a linear function rulebe determined?

We can express the Equation of a linear function, as y = mx + b.

m= slope

b= y-intercept

We can determine the slope (m):

= (change in y)/(change in x )

then we can substitute the values as :

= (-7 -(-4)) / (3 - 2)

= -3/1

= -3

Then thevalue of b can be found through the substituting of  m = -3  into the  equation knowing that  (1, -1) = (x, y)

Then we have;

-1 = [-3(1) + b]

-1 = [-3 + b]

[-1 + 3] = b

b = 2

In this case ,  we can put m = -3 , b = 2

y = mx + b

y = [-3(x) + 2]

Therefore, we have

y = -3x + 2

Hence option A is correct.

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complete question:

Which equation represents a linear function rule for the following set of ordered pairs?

x y

1 -1

2 -4

3 -7

A. y = -3x + 2

B. y = -3x - 2

C. y = -2x + 3

D. y = -2x - 3

solve for x (interior and exterior angles)​

Answers

Answer:

-11

Step-by-step explanation:

*The sum of all three angles of a triangle is 180*

So,

80+60

140 + (x + 51) = 180

-140 -140

x + 51 = 40

- 51 - 51

x = - 11

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The mean of 4 numbers is 19. What would the new mean be if the number 28 is added to the data set?
A)16.8
B)20.8
C)26
D)74

Answers

The revised mean is thus 20.8, which is consistent with choice (B).

How can you calculate the mean?

Simply dividing the total number of values in a data collection by the aggregate of all of the values yields it. The computation can be performed on unprocessed data or data that has been combined into a frequency chart.

We must first compute the average of the dataset such as the new number, then split by the overall number of data points in order to determine the innovative mean within a week of adding a count to the dataset.

Let's call the four original numbers in the dataset A, B, C, and D. We know that their mean is 19, so we can write:

(A + B + C + D)/4 = 19

Multiplying both sides by 4 gives us:

A + B + C + D = 76

Now, if we add the number 28 to the dataset, we get a new sum:

A + B + C + D + 28

To find the new mean, we need to divide this sum by the total number of values in the dataset, which is 5 now:

(A + B + C + D + 28)/5

Substituting in our earlier expression for A + B + C + D, we get:

(76 + 28)/5 = 104/5 = 20.8

Therefore, the new mean is 20.8, which corresponds to option (B).

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You borrow $8000 to help pay your college expenses. You agree to repay the loan at the end of 5 years at 11% interest, compounded monthly. (Round your answers to two decimal places.)
(a) What is the maturity value of the loan?
$ _____
(b) How much interest are you paying on the loan? $ _____

Answers

The maturity value of the loan is $13487.58 and the interest paid on the loan is $5487.58.

The maturity value of a loan is the amount that will be due at the end of the loan period. To calculate the maturity value of the loan, we will use the formula:
Maturity Value = Principal x (1 + Interest Rate/Compounding Periods)^(Compounding Periods x Number of Years)
(a) Maturity value of the loan
Maturity Value = 8000 x (1 + 0.11/12)^(12 x 5)
Maturity Value = 8000 x (1 + 0.0091666667)^60
Maturity Value = 8000 x 1.685947578
Maturity Value = $13487.58
The maturity value of the loan is $13487.58.
(b) Interest are you paying on the loan
To calculate the interest paid on the loan, we will subtract the principal from the maturity value.
Interest = Maturity Value - Principal
Interest = 13487.58 - 8000
Interest = $5487.58
The interest paid on the loan is $5487.58.

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Rewrite without parentheses. (3x^(4)z^(2)-8x^(5))(-6xz^(6)) Simplify your answer as much as possible.

Answers

The equation (3x⁴z² - 8x⁵)(-6xz⁶) is rewritten without parenthesis as 48x⁶z⁶ - 18x⁵z⁸

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables. Equations can either be linear, quadratic, cubic and so on depending on the degree.

Given the equation:

(3x^(4)z^(2)-8x^(5))(-6xz^(6))

Simplifying gives:

= (3x⁴z² - 8x⁵)(-6xz⁶)

Opening the parenthesis gives:

= -18x⁵z⁸ + 48x⁶z⁶

= 48x⁶z⁶ - 18x⁵z⁸

The equation is equivalent to 48x⁶z⁶ - 18x⁵z⁸

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coretta buys a pair of jeans that is on sale for 20% off. the regular price is marked $27.00 find the amount of discount on the jeans

Answers

Answer: $21.60

Step-by-step explanation: This is a similar way I solve this problem..

You take 20%, notice is it 20% of 100%, our 100% in this case is $27.00, our 20% is missing.. so.. divide 27.00 by 5, because 5 20%'s is 100%, after you divide by 5 you will end up with $5.40, so we know that 20% of $27.00 is $5.40..

Take $27.00 and take $5.40 away, and you will be left with 21.60

20%x5=100%

27.00/5=5.40

27.00-5.40=21.60

Coretta's pair of jeans is $21.60 when it is on sale for 20% off.

The farmer purchased 215 acres of land for $4,100 acre. He paid 25% down and obtained a loan for the balance at 6.75 APR over 20 year period. How much is the annual payment? (Simplify your answer completely.) Round your answer to the nearest cent.

Answers

The annual payment for the loan is $48,867.89.

To find how much is the annual payment for the loan, we must first find the total cost of the land and the loan amount.

The total cost of the land is $4,100 × 215 = $881,500.

The down payment is 25% of the total cost, so the down payment is $881,500 × 0.25 = $220,375.

The loan amount is the total cost minus the down payment, so the loan amount is $881,500 - $220,375 = $661,125.

To find the annual payment, we can use the formula A = P(1 + r)^n / [(1 + r)^n - 1], where A is the annual payment, P is the loan amount, r is the annual interest rate (APR), and n is the number of years.

Plugging in the values, we get:

A = $661,125(1 + 0.0675)^20 / [(1 + 0.0675)^20 - 1]

A = $661,125(1.0675)^20 / [(1.0675)^20 - 1]

A = $661,125(3.0878) / (3.0878 - 1)

A = $2,040,756.55 / 2.0878

A = $977,357.72

So the annual payment is $977,357.72 / 20 = $48,867.89.

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From a hot-air balloon, Violet measures a 27° angle of depression to a landmark
that's 790 feet away, measuring horizontally. What's the balloon's vertical distance above the ground? Round your answer to the nearest tenth of a foot if necessary. Do NOT say 402.53 - says it’s wrong.

Answers

Answer:

358.65

Step-by-step explanation:

sin27 = x/790

so x = sin27 × 790 = 358.65

Present a quadratic equation in the form ax2 + bx + c = 0 where a > 1.
How many solutions does your quadratic have based on the discriminant?
Pick TWO ways to find the specific solutions or show that there is no solution:
Quadratic Formula
Graphing
Factoring
Square Root Property
Completing the Square
Why did you choose those two specific methods versus the others?
Make sure that you do NOT use the same quadratic equation presented by one of your peers.

Answers

I chose the Quadratic Formula and Graphing because they are both straightforward methods that can give us the exact solutions.

A quadratic equation in the form ax^2 + bx + c = 0 where a > 1 is 2x^2 + 5x + 3 = 0.

To find the number of solutions based on the discriminant, we can use the formula D = b^2 - 4ac. In this case, D = (5)^2 - 4(2)(3) = 25 - 24 = 1. Since D > 0, the quadratic equation has two distinct real solutions.

Two ways to find the specific solutions or show that there is no solution are the Quadratic Formula and Graphing.

The Quadratic Formula is x = (-b ± √D)/2a. Plugging in the values from the equation, we get x = (-5 ± √1)/4 = (-5 ± 1)/4. This gives us the two solutions x = -1 and x = -2.

Graphing is another way to find the solutions. We can graph the equation y = 2x^2 + 5x + 3 and find the x-intercepts, which are the solutions to the equation. The graph shows that the x-intercepts are -1 and -2, which are the same solutions we found using the Quadratic Formula.

I chose the Quadratic Formula and Graphing because they are both straightforward methods that can give us the exact solutions. The Quadratic Formula is a formula that can be applied to any quadratic equation, and Graphing allows us to visually see the solutions. The other methods, such as Factoring, Square Root Property, and Completing the Square, may not always be applicable or may require more steps to find the solutions.

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What are the quotient and remainder when 3x^(4)-x^(2) is divided by x^(3)-x^(2)+1 ?

Answers

The quotient and remainder when 3x^(4)-x^(2) is divided by x^(3)-x^(2)+1 is x+1 and 2x^2-3, respectively.

To find the quotient and remainder, use long division. First, divide the leading terms of both polynomials. 3x^4 divided by x^3 gives x.


Next, multiply the quotient by the divisor and subtract from the dividend. x(x^3-x^2+1) subtract from 3x^4-x^2 gives x+1.

Finally, divide the remainder by the divisor to get the remainder. x+1 divided by x^3-x^2+1 gives 2x^2-3. Therefore, the quotient and remainder when 3x^(4)-x^(2) is divided by x^(3)-x^(2)+1 is x+1 and 2x^2-3, respectively.

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