how to prove the median of a trapezoid is parallel to the bases and equal in length to the average of their lengths?

Answers

Answer 1

The median of a trapezoid is parallel to the bases and equal in length to the average of their lengths. This is due to the midpoint theorem and the definition of the average.

The median of a trapezoid is a line segment that connects the midpoints of the non-parallel sides of the trapezoid. By the definition of a trapezoid, the two parallel sides (the bases) are of equal length.To prove that the median of a trapezoid is parallel to the bases and equal in length to the average of their lengths, we will make use of the midpoint theorem and the definition of the average.First, let's look at the midpoint theorem: If two points are the midpoints of two sides of a trapezoid, then the line connecting them is parallel to the bases. Now, let's look at the definition of the average: The average of two numbers is equal to the sum of the numbers divided by two.Now, let's apply these two concepts to the median of a trapezoid. As stated above, the median of a trapezoid connects the midpoints of the non-parallel sides of the trapezoid. By the midpoint theorem, the line connecting the midpoints of the non-parallel sides of the trapezoid is parallel to the bases. Next, we need to prove that the median of a trapezoid is equal in length to the average of the lengths of the bases. We can do this by noting that the length of the median of a trapezoid is equal to the sum of the lengths of the bases divided by two. This is because the median line segment connects the midpoints of the bases, so the length of the median is equal to half the sum of the lengths of the bases.Therefore, we can conclude that the median of a trapezoid is parallel to the bases and equal in length to the average of their lengths.

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Related Questions

A contruction company take 1/4 hour to remove 1/2 metric ton of dirt from a contruction ite. What i the unit rate in metric ton per hour? Write your anwer in implet form

Answers

The answer is 2 metric tons in an hour.

Units refer to a specific measurement or denomination used to express the size or quantity of something. For example, length can be measured in units of inches, feet, or meters. Time can be measured in units of seconds, minutes, or hours.

The best way to do this is to convert all the fractions to decimals. The problem starts out looking like this.

Formula :

Rate = Tons removed / hours

Tons Removed = 1/2 metric ton

Time taken = 1/4 hour

Rather than doing it with fractions, it is much easier to do it with decimals

1/4 = 0.25

1/2 = 0.5

Now what you get is rate = 0.5 / 0.25 = 2

So, 2 metric tons can be removed in an hour.

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A box contains 12 tickets labeled with numbers. The number on the tickets are -9, -9, -8, -8, -5, -5, -4, 3, 6, 6, 6, 7 . The expected value of the sample sum of the ticket labels in 11 independent random draws with replacement from the box is

Answers

The expected value of the sample sum of the ticket labels in 11 independent random draws with replacement from the box is -16.5

The expected value of the sample sum of the ticket labels in 11 independent random draws with replacement from the box can be calculated by multiplying the expected value of each draw (which is the mean of the numbers on the tickets) by the number of draws.

The mean of the numbers on the given tickets is ( (-9*2) + (-8*2) + (-5*2) + (-4) + (3) + (6*3) + (7) )/12 = (-18 - 16 - 10 - 4 + 3 + 18 +7)/12 = -1.5

So the expected value of the sample sum of the ticket labels in 11 independent random draws with replacement from the box is 11*-1.5 = -16.5.

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An Isosceles triangle and a square have the same perimeter. Find the side lengths of the triangle.

triangle base: 3x

triangle height: 2x+1

square length: 4

Answer: 5, 5, 6

How you get this answer?

Answers

If the perimeters are the same. Then the dimension of the triangle will be 5, 5, and 6.

What is the perimeter of the geometry?

The peripheral of a form is defined in mathematics as the entire length of its boundaries. The surrounding of a form is calculated by summing the lengths of all the vertices and edges that surround it. It is measured in linear quantities like cm, meters, inches, and feet.

Let 'x' be the isosceles sides and the 'y' be the third side. Then the equation is given as,

x + x + y = 4 × 4

2x + y = 16

2x + y = 2(5) + 6

Then the dimension of the triangle will be 5, 5, and 6.

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monica has a goal to complete a triathlon. the race consists of a 0.93-mile swim, a 24.8-mile bike ride, and a 6.2-mile run. in training, monica can swim at an average pace of 2.1mph. she rides her bike at an average of 18.8mph and runs at 5.1mph. estimate how long it will take her to complete the triathlon.

Answers

3.31 it will take her to complete the triathlon.

To find this, we can apply the equation distance = rate x time.

We are aware of the length and pace of each triathlon leg. Let's name them, respectively, d and r. We must locate the time, which we shall designate as t.

d = r x t    or

t = d/r

The distance is 0.93, or 93/100, and the rate is 1.2, or 12/10 when swimming. As a result of our formula, we have:

12/10 divided by 93/100 yields the same result as

93/100 * 10/12

time to swim = 93/120 = 31/40

We have a distance of 24.8 miles, or 248/10, and a speed of 18.8 miles, or 188/10, for biking. Using the same formula, we obtain:

248/10 divided by 188/10 or

248/10 * 10/188 = 248/188 = 62/47 = time to bike

Finally, for the run, the distance is 6.2 = 62/10 and the rate is 5.1 or 51/10. Plugging this into the formula gives:

62/10 divided by 51/10 or

62/10 * 10/51 = 62/51 = time to run

= 31/40 + 62/47 + 62/51

=3.31

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color each of the six faces of a cube with either blue or red. note that two colorings are regarded the same if the cube looks identical after some rotation. how many different colorings can be made?

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There are 8 different colorings that can be made.

Color each of the six faces of a cube with either blue or red. note that two colorings are regarded the same if the cube looks identical after some rotation.

The number of colorings can be calculated by using the equation 2^6 = 64. This is because each of the six faces of the cube can be colored either blue or red, giving two options for each face.

As there are six faces, the total number of colorings is 2^6 = 64. However, some of these colorings are the same after a rotation, so the total number of distinct colorings is 8.

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andrew is moving to nashville TN. he decides to hire a moving company and gets two quotes. the first quote is $340 which includes 10 hours of packing and 3 hours of loading tje truck. the second quote is for $495 which includes 15 hours of packing and 4 houra of loading the moving truck. determine the hourly rates the moving company charges for packing and loading the truck

Answers

Answer: $26.094 an hour

Step-by-step explanation:

First, add up the total hours:

10 + 3 + 15 + 4 = 32

Now, add up the total amount charged:

340 + 495 = 835

Now, divide the amount charged by the number of hours:

835 / 32 = *26.094

* or 26.09375 if it needs to be exact.

Write the next three terms of the geometric sequence. 81, - 27, 9, - 3

Answers

The next 3 terms of the given geometric sequence are:

... 1, -1/3, 1/9

How to find the next three terms of the geometric sequence?

A geometric sequence is a sequence where to get the next term, we need to multiply the previous term by a constant number.

Such that the general recursive formula is:

Aₙ = k*Aₙ₋₁

By using the two first terms:

81 and -27, we can find the value of k.

-27 = k*81

-27/81 = k

-1/3 = k

Now, to get the next 3 terms we can use the recursive formula:

A₅ = -3*(-1/3) = 1

A₆ = (-1/3)*1 = -1/3

A₇ = (-1/3)*(-1/3) = 1/9

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11 Mark the givens in the diagram. Then copy the proof on paper, and fill in the blanks to complete the proof. Chapter Reference c Given that AR ∩ DC = M, AD = RC and ∠A ≅ ∠R, prove that △MAD ≅ △MRC. A D M R C 1. AD = ____ 1. Given 2. ∠A ≅ ∠____ 2. Given 3. ∠AMD ≅ ∠____ 3. ________ 4. △MAD≅ △____ 4. ________ Answer: 1. AD = RC 1. Given 2. ∠A≅∠ 2. Given 3. ∠ AM D = ∠ 3. 4. △ MAD ≅△ 4.

Answers

Answer:

AD=RC,        GIVEN

∠A≅∠R      GIVEN

∠AMD=∠RMC    VERtical angles

△MAD△MRC   ASA/SAA

Step-by-step explanation:

Tell the maximum number of zeros that the polynomial function may have. T f(x)=4x^9+5x^8+4x^6+9x+1

Answers

Answer:  the maximum number of zeros that the polynomial function

f(x)= 4x^9+5x^8+4x^6+9x+1  is 9

Step-by-step explanation:

Firstly, it is important to rearrange the function in decreasing order. The function will now be f (x) = 4x^9+5x^8+4x^6+9x+1

Secondly, for finding the zeros, it is necessary to find the degree of the function. The maximum number of zeroes in a polynomial is the degree of the function. The degree of a function is the highest value of exponents in the function. Here, in this function, the degree is 9.

Lastly, the degree of the function is the number of zeroes. Since the degree is 9, the number of zeroes possible is also 9.

which geometric series should you use to find total amount of money after 30 days after 30 days the total is

Answers

Geometric series should you use to find total amount of money after 30 days geometric series should you use to find total amount of money after 30 days

after 30 days the total is 0737418.23

Given that

A geometric series is a collection of terms in mathematics that have an unlimited number and a fixed ratio between each term. Because each succeeding term may be produced by doubling the previous term by half, for instance, the series

1/2+1/4+1/8+1/16+ ..........is geometric, because each successive term can be obtained by multiplying the previous term by 1/2.

The geometric series had an important role in the early development of calculus, is used throughout mathematics, and can serve as an introduction to frequently used mathematical tools such as the Taylor series, the complex Fourier series, and the matrix exponential.

Each term in a geometric series is the geometric mean of its two adjacent terms, as indicated by the name.

now, we need to find geometric series  should you use to find total amount of money after 30 days

geometric series = Σ[tex]\left \ {{30} \atop {n=1}} \right.[/tex]

= (1)[tex](2)^{1-1}[/tex] + (1)[tex](2)^{2-1}[/tex] + (1)[tex](2)^{3-1}[/tex] + (1)[tex](2)^{4-1}[/tex] + ......................+(1) [tex](2)^{29-1}[/tex] +(1)[tex](2)^{30-1}[/tex]

= 10737418.23

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Answer:

A and then the 2nd one is 10737418.23

Step-by-step explanation:

yw

Why is the absolute value of 5 and 5 the same answer?

Answers

The absolute value of a number is the distance of that number from 0 on the number line. Since 5 and -5 are both 5 units away from 0, the absolute value of both numbers is 5. Therefore, |5| = |-5| = 5.

The absolute value of a number is a non-negative value that represents the distance of that number from zero on the number line. It is denoted by two vertical bars "||" surrounding the number. For example, the absolute value of 5 is written as |5|.

For positive numbers, the absolute value is simply the number itself. For example, |5| = 5.

For negative numbers, the absolute value is the numerical value of the number but with the opposite sign. For example, |-5| = 5.

In other words, the absolute value of a number removes any negative sign and gives the distance of the number from 0, regardless of its sign. So, the absolute value of 5 is 5 and the absolute value of -5 is also 5. They are the same distance from 0 on the number line.

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Convert $2525 US to Argentine peo uing the converion $0. 23364 US per 1 Argentine peo. Round your anwer to the nearet peo

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The expression of $2525 US in Argentine peso is 5,788,660 peso, calculated using the conversion rate of $0.23364 US to 1 Argentine peso.

2525 US x 0.23364 Argentine peso = 5,888.85 Argentine peso

Rounded to the nearest peso = 5,788,660 Argentine peso

The conversion rate of US Dollars to Argentine Peso is $0.23364 US per 1 Argentine peso. This means that for every 1 Argentine peso, you would need to spend $0.23364 US. To calculate the equivalent amount of Argentine peso for $2525 US, we need to multiply $2525 US by 0.23364 Argentine peso. This gives us a total of 5,888.85 Argentine peso. However, when making monetary calculations, it is important to round the result to the nearest peso, so the equivalent of $2525 US in Argentine peso is 5,788,660 peso. This means that for every $2525 US, you can purchase 5,788,660 peso in Argentine currency.

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1. which game are the men playing? chess dominoes poker 2. what kind of cuban food is shown? fried plantains rice and black beans a sandwich with pork, ham, and cheese 3. what is the man in the yellow shirt and white pants doing? dancing eating waving a cuban flag 4. how many stars does the cuban flag have? one

Answers

1. The men are playing Dominos in the game.

2. A sandwich with pork ham and cheese is the kind of Cuban food shown.

3. The man in the yellow shirt and white pants is shown Dancing.

4. The Cuban flag has one star.

Dominoes refers to a group of tile-based games with playing pieces that resemble dominoes. A line usually divides the two square ends of each rectangular domino tile. Either a blank space or a series of dots designate each end. Each tile in a set has a back that is either blank or has a similar design, making them all identical.

The playing pieces are what make up a domino set, sometimes referred to as a deck or pack. The typical European domino set consists of 28 tiles with spot counts ranging from zero to six in all possible combinations. Some other names for these tiles are pieces, bones, rocks, stones, men, cards, and simply dominoes.

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i opened a grocery account at my bank with $150. every week thereafter, i withdraw $85 from the account to pay for groceries. if x is the number of weeks i've had the account, then y is the amount in the account. find an equation of a line in the form y

Answers

The equation of a line in the form y is y = 150 - 85x.

This equation can be used to determine the amount of money in the grocery account at any given week, x. To solve, we will use the information given in the question.

We know that the initial amount in the account is $150. This is the y-intercept of the line. Therefore, 150 = 150 - 85x. Solving this equation for x, we get x = 0. This means that at week 0 the account has a balance of $150.

Next, we know that money is withdrawn from the account every week. We can use this information to solve for the slope of the line. We know that every week $85 is withdrawn from the account, so the slope of the line is -85. Therefore, the equation of the line is y = 150 - 85x.

Using this equation, we can determine the amount in the account at any given week. For example, at week 5, y = 150 - 85(5) = $25. This means that the account has a balance of $25 at week 5.

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Sadie is 63.5 inches tall. if 2.54 cm equals 1 inch, what is sadie's height in centimeters?
a. 5.29 cm
b. 25 cm
c. 161.29 cm
o d. 635 cm
plssss help

Answers

The centimeter equivalent of Sadie's height is 142.875 cm.

(63.5×2.25) cm.

= 142.875 cm.

∠A and B∠ are vertical angles. If m∠A = (3x+9) and m∠B=(4x-7) , then find the measure of angle B∠.

Answers

Answer:

57 degrees

Step-by-step explanation:

vertical angles are equal. thus, 3x+9 = 4x-7

subtract 3x from both sides to put all x values and their coefficients on one side

9 = x-7

add 7 to both sides to isolate x

x = 16

B = 4x-7 = 4 * 16 - 7 = 57

This is the question

Answers

The equation of the tangent line at x = 4 is:

y = 179*x  - 490

(your teacher or the person who wrote this problem made a mistake somewhere, as none of the options is near correct)

How to find the equation of the tangent line?

We have:

f(x) = 4x³ - 2x² + 3x - 10

When x = 4 we have:

f(4) = 4*4³ - 2*4² + 3*4 - 10 = 226

So we want a line tangent to the curve at the point (4, 226)

To find the slope of that line, we need to evaluate the derivative of f(x) in x = 4.

The derivative is:

f'(x) = 3*4x² - 2*2x + 3

f'(x) = 12x² - 4x + 3

Then the slope is:

f'(4) = 12*4² - 4*4 + 3 = 179

Then the tangent line is something like:

y = 179*x + b

To find the value of b, we replace the values of the point (4, 226)

226 = 179*4 + b

226 - 179*4 = b = -490

The line is:

y = 179*x  - 490

Notice that this is not in the options, meaning that the problem (or the options) are written incorrectly.

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99/12 in long division please!

Answers

This is your answer in a decimal in long division
Answer : 8.25

how much does 12 go to 99
8 times then it 3 then add dismal then add zero it’s 30 how much does 30 go in to 12 2 times then it’s 6 then bring down the zero and now it’s 60 how much does 60 go in to 12 5 times it’s 60 then 0 then ur done :)

How would the dx2−y2 orbital in the n=5 shell compare to the dx2−y2 orbital in the n=3 subshell?

a) The contour of the orbital would extend further out along the x and y axes.

b) The value of ℓ would increase by 2.

c) The radial probability function would include two more nodes.

d)The orientation of the orbital would be rotated 45∘ along the xy plane.

e) The mℓ value would be the same.

**Which statements above are correct?

Answers

A. The contour of the orbital would extend further out along the x and y axes and the mℓ value would be the same.

The dx2−y2 orbital in the n=5 shell will have a higher principal quantum number (n=5) than the dx2−y2 orbital in the n=3 subshell (n=3). This means that the contour of the orbital in the n=5 shell will extend further along the x and y axes, as the orbital size increases with increasing n.

However, the mℓ value will remain the same, as the angular momentum quantum number (ℓ) remains constant at two and mℓ can only take values between -ℓ and +ℓ.

The value of ℓ will not increase by two, as stated in option B, and the radial probability function will not include two more nodes, as stated in option C. Furthermore, the orientation of the orbital will not be rotated 45∘ along the xy plane, as stated in option D.

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At a local play, student tickets cost $5 each and adult tickets cost $10 each. if ticket sales were $3,000 for 500 tickets, how many students attended the play?
a. 100
b. 200
c. 300
d. 400

Answers

Answer:

To solve this problem, we can use algebra. Let x be the number of student tickets sold and y be the number of adult tickets sold. We know that:

x + y = 500 (the total number of tickets sold)

5x + 10y = 3000 (the total revenue from ticket sales)

We can use the first equation to solve for one of the variables in terms of the other. For example, we can use the first equation to solve for y in terms of x:

y = 500 - x

Now we can substitute this expression for y into the second equation:

5x + 10(500 - x) = 3000

5x + 5000 - 10x = 3000

-5x = -2000

x = 400

So, the number of student tickets sold is 400. The answer is d) 400

Total 400 students attended the play.

What is function?

A function is a relation between a dependent and independent variable.

Mathematically, we can write → y = f(x) = ax + b.

Given is that student tickets cost $5 each and adult tickets cost $10 each. The total ticket sales were $3,000 for 500 tickets.

We can write the system of equations as -

5x + 10y = 3000

x + y = 500

Now -

x = 500 - y

So -

5(500 - y) + 10y = 3000

2500 - 5y + 10y = 3000

5y = 500

y = 100

x = 400

Therefore, total 400 students attended the play.

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A map’s scale of cm to miles is ½ cm equal 10 miles. If the distance from City A to City B is 3.7 cm on the map, what is the actual distance?

Answers

Answer: 74 miles

Step-by-step explanation:

3.7 divided by 0.5 = 7.4

7.4 x 10 = 74

74 miles

Solve for X, Leave in simplest radical form

Answers

The value of y is 2. The study of triangular relationships between angles and side lengths is known as trigonometry.

What are trigonometric relations?When the number under the root sign has no square factors, a radical is said to be in its simplest form. For instance, 72 can be divided by 4 to get 218. Radicals - The symbol nx used to denote a root is referred to as a radical and is thus interpreted as "x radical n" or "the nth root of x." The horizontal line, the quantity underneath it, and the quantity n printed to the left are referred to as the vinculum, radicand, and index, respectively, in the radical symbol. The square root symbol, which has the value of 1.414, is used to symbolise the square root of 2, also known as root 2. Mathematicians frequently utilise this number.

The study of triangular relationships between angles and side lengths is known as trigonometry.

The six trigonometric functions are cosec, sec, cot, sin, and tan.

Allow the angle to be, so that

The opposite or hypotenuse of sin

sin θ = opposite / hypotenuse

cos θ = adjacent / hypotenuse

tan θ = opposite / adjacent

tan θ = sin θ / cos θ

cosec θ = 1/sin θ

sec θ = 1/cos θ

cot θ = 1/tan θ

Given data ,

Let the triangle be ΔABC

The triangle ABC is a right angled triangle and the angles inside the triangles are 45° , 45° and 90°

Now , from the given figure

From the trigonometric relations

tan θ = x / √2

Now , θ = 45°

So , tan 45° = x / √2

And , tan 45° = 1

So , the value of x = √2

And from trigonometric relations ,

hypotenuse² = base² + length²

y = √ ( √2 )² + ( √2 )²

y = √4

y = 2

Hence , The value of x = √2

The value of y = 2

The complete question is,

Solve for X. Leave your answer in simplest radical form if necessary.

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Phoebe, Andy and Polly share £270

Phoebe gets three times as much as Andy who gets twice as much as Polly.

Work out how much they each get.

Answers

Using the provided condition and values, This is solved using the concept of word problem, The answer is Polly gets £30, Andy gets £60 and Phoebe gets £180.

What is word problem?

A word problem in mathematics is a problem that is written in natural language (i.e., words) rather than in mathematical notation. It presents a real-world scenario that requires the use of mathematical concepts and skills to solve. Word problems often involve finding unknown quantities based on given information, and they can be challenging because they require students to understand the problem and translate it into mathematical equations or formulas. They are often used in primary and secondary education to help students apply their math skills to real-world situations and develop critical thinking skills.

What do you mean by mathematical expression?

A mathematical expression is a combination of numbers, variables, and mathematical operations (such as addition, subtraction, multiplication, and division) that represents a mathematical statement or equation. Mathematical expressions can be evaluated to find a numerical value. They can also be simplified by applying the order of operations (PEMDAS) to combine like terms or to remove unnecessary parentheses. Additionally, mathematical expressions can also be used to represent the relationship between different variables.

Let x be the amount that Polly gets.

Andy would get 2x and Phoebe would get 3(2x) = 6x

So the total amount would be x + 2x + 6x = 9x

Therefore, x + 2x + 6x = £270

9x = £270

x = £30

So Polly gets £30, Andy gets £60 and Phoebe gets £180.

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what number represents an area receiving several weeks (to months) of constant daylight during their summer?

Answers

The number that represents an area receiving several weeks (to months) of constant daylight during their summer is 10.

The number 10 is typically found at latitudes above the Arctic Circle (about 66.5 degrees North) during the summer solstice, the longest day of the year.

During the summer solstice, the tilt of the Earth's axis is such that the North Pole is tilted towards the sun, providing more direct sunlight to areas within the Arctic Circle. This results in several weeks to months of constant daylight, known as the "midnight sun."

On the other hand, areas south of the Antarctic Circle, which is located at about 66.5 degrees South latitude, experience "polar night" or 24-hour darkness during the winter solstice.

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Use the diagram below to find x.
Then, find the angle measures.
(x-6)⁰
2x

Answers

The sum of the angles equals 540

How to find the value of the angle?

There are 3 angles that measure (x - 6) and 2 angles that measure (x)

We should know that the question address a pentagon

3(x - 6) + 2(x) = 540

Simplify the equation

3x - 18 + 2x = 540

Collecting the like terms to have

5x - 18 = 540

5x = 598

Making x the subject of the relation we have

x = 120⁰

Bu substitution, put x in the value x-6 to have the value of the angle

x - 6   = 120 - 6   = 114

Conclusively,  the value of x  = 114

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a researcher is 95% confident that the interval from 2.9 minutes to 6.83 minutes captures mu the true mean amount of time mice take to complete a maze for a piece of cheese. is it plausible that the true mean number of times for all mice to complete this maze may be less than 7 minutes?

Answers

The correct option is option a) Yes, this is plausible for the population mean because the upper boundary of the 95% confidence interval is below 7 minutes.

A confidence interval is a range of values, derived from a sample of data, that is used to estimate an unknown population parameter. The interval has an associated confidence level, such as 90%, 95%, or 99%, which indicates the level of confidence that the interval contains the true population parameter.

The most commonly used method to calculate a confidence interval is the method of maximum likelihood estimation. The wider the interval, the less certain the estimate, and the narrower the interval, the more certain the estimate.

It is plausible that the true mean number of times for all mice to complete the maze may be less than 7 minutes, as the interval provided by the researcher (2.9 minutes to 6.83 minutes) does not include 7 minutes as an upper bound.

A 95% confidence interval indicates that if the study were to be repeated multiple times, 95% of the intervals created would contain the true mean, so there is a 5% chance that the true mean falls outside of the interval provided.

Therefore, The correct option is option a) Yes, this is plausible for the population mean because the upper boundary of the 95% confidence interval is below 7 minutes.

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Answer:Yes, this is plausible for the population mean because the upper boundary of the 95% confidence interval is below 7 minutes

Step-by-step explanation:

i took the quiz

Explain the significance of standard error and 2 different sets of data with different sample sizes that have the same Mean (in terms of precision).

Answers

The significance of standard error and 2 different sets of data with different sample sizes that have the same Mean is explained below.

The term mean in math is known as the process of adding all numbers in the data set and then dividing by the number of values in the set.

Here we have know that the significance of standard error and 2 different sets of data with different sample sizes that have the same Mean in terms of precision.

And then it is defined as standard error is a measure of precision.

Where on the other hand it defines a way to better understand data and it also helps to understand how far the data is spread throughout the graph.

As for example while we take his first set had a sample size of two then while his second set had a sample size of 10.

Hence the first sample set had more precision, or a higher standard error.

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A line passes through the point (4,8) and has a slope of 5. Write and equation in point slope form

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Answer:

y - 8 = 5(x -4)

Step-by-step explanation:

(4,8) 4 is the x value and 8 is the y value.

You subtract 8 from y and subtract 4 from x.  The slope is after the equal sign.

Answer:

Step-by-step explanation:

The point slope form is y- y₁ = m(x - x₁)

m is the slope or 5 here.

It is given that (x₁ , y₁) = (4, 8)

Just put the values there.

y - 8 = 5(x - 4)

5x - 40 - y + 8 = 0

5x - y - 32 = 0

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Work out the volume and surface area of each prism:

Answers

The volumes of the prisms are 12 cm³, 135 cm³ and 1200 cm³

What are prisms?

A prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases. All cross-sections parallel to the bases are translations of the bases.

Given are prisms, We need to find their volumes,

Volume of a prism = 1/2 × area of the base × height

1) Area of the base = 1/2 × 3 × 4 = 6 cm²

Height = 4 cm

Volume = 1/2 × 4 × 6 = 12 cm³

2) Area of the base = 1/2 × 5 × 12 = 30 cm²

Height = 9 cm

Volume = 1/2 × 9 × 30 = 135 cm³

3) Area of the base = 1/2 × 15 × 16 = 120 cm²

Height = 20 cm

Volume = 1/2 × 20 × 120 = 1200 cm³

Hence, the volumes are 12 cm³, 135 cm³ and 1200 cm³

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Adding and subtracting mixed fractions

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Answer:

what do yuo mean by adding and subtracting mixed fractions

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