how do you find volume and surface area of this figure? ​

The height of the cone is 24 centimetres.

A cone has a volume of 392π cubic centimetres and a radius of 7 centimetres. Therefore, the height of the cone can be found as follows;

Hence,

volume of a cone = 1 / 3 πr²h

where

Therefore,

volume = 392π

r = 7 cm

392π = 1 / 3 × π × 7² × h

392π = 49 / 3 πh

cross multiply

1176π = 49πh

divide both sides by 49π

h = 1176π / 49π

h = 24 cm

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The field is full of 18 horses and 15 geese.

Let's assume that there are x horses and y geese in the field. The number of heads can be represented as x + y = 33. The number of feet can be represented as 4x + 2y = 102.

We can use substitution to solve for one variable in terms of the other. From the first equation, we can solve for y in terms of x:

y = 33 - x

Substituting this expression for y into the second equation, we get:

4x + 2(33 - x) = 102

Expanding and simplifying the expression, we get:

4x + 66 - 2x = 102

Solving for x, we get:

2x = 36

And x = 18

So there are 18 horses in the field. Substituting this value for x into the expression for y, we get:

y = 33 - x = 33 - 18 = 15

So there are 15 geese in the field. Thus, the field is full of 18 horses and 15 geese.

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Step-by-step explanation:

To calculate the potential energy of the ball at its highest point, we first need to find the gravitational potential energy of the ball. Gravitational potential energy is given by the equation:

PE = mgh

where m is the mass of the ball, g is the acceleration due to gravity (9.8 m/s^2 on the surface of the earth), and h is the height of the ball above the ground.

At its highest point, the height of the ball is 80 m, so the gravitational potential energy can be calculated as:

PE = m * g * h = m * 9.8 * 80

where m is the mass of the ball.

Since the ball was thrown at an angle of 30 degrees with the horizontal, its initial velocity can be broken down into horizontal and vertical components:

v0x = v0 * cos(30) = 10 * cos(30) = 10 * sqrt(3)/2 m/s

v0y = v0 * sin(30) = 10 * sin(30) = 10/2 m/s

The potential energy of the ball at its highest point can be found by adding the initial kinetic energy of the ball to its gravitational potential energy. The kinetic energy of the ball can be calculated as:

KE = 1/2 * m * v0y^2

where m is the mass of the ball and v0y is the vertical component of its initial velocity.

The total potential energy of the ball at its highest point is given by:

PE = KE + mgh = 1/2 * m * v0y^2 + m * g * h

Substituting in the given values, we find:

PE = 1/2 * m * (10/2)^2 + m * 9.8 * 80

Note: The mass of the ball (m) is not given, so the answer is given in terms of m.

Answer:

Step-by-step explanation:

PE = 1/2 * m * (10/2)^2 + m * 9.8 * 80

Using equations, we know that the age of Geraldine and Steven is t - 4 and 2t - 8 respectively.

It basically consists of a variable, perhaps with an additional numerical constant.

To easily understand this concept, consider the example below. 3x – 4 = 5. It is a straightforward class 7 equation.

The equals sign is a symbol used in mathematical formulas to denote the equality of two expressions.

So, we have the following algebraic expression after converting the word problem:

To Geraldine:

g = t - 4

To Steven:
s = 2g

Inputting Tom's age into equation 1 results in:

g = t - 4

To determine Steven's age:

s = 2(t-4)

s = 2t - 8

Therefore, using equations, we know that the age of Geraldine and Steven is t - 4 and 2t - 8 respectively.

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Answer: The expression (-14) - 8 has the same value as -22.

Answer: [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

1) Subtract Michael's voters from all the voters 56/56 - 42/56. When you have the same denominator, subtract the numerator and keep the denominator the same to get 14/56.

2) Simplify, both the numerator and denominator is divisible by 14, so divide 14/14 to get 1 as our new numerator and divide 56/14 to get 4 as our denominator leading us to our answer of 1/4

Answer:

4.5 inches

Step-by-step explanation:

Answer:

  (x, y) = (4, 0)

Step-by-step explanation:

You want the solution to the system of equations ...

It often works well to start the solution process by putting both equations into standard form. We do that by removing any common factors from the coefficients. Here, we see that the second equation's coefficients each have a factor of 3, so we can remove that and rewrite the system as ...

Changing the coefficient of the y-term has no effect, telling us that y=0, and the equation reduces to ...

  5x = 20

  x = 4

More formally, if we subtract the first equation from the second, we get ...

  (5x +2y) -(5x -3y) = (20) -(20)

  5y = 0 . . . . . . simplify

  y = 0 . . . . . . . divide by 5

The solution is (x, y) = (4, 0).

The solution of the system of equations is:

x = 3

y = 2

Here we want to solve the system of equations below:

2x + y = 8

x - 3y = -3

First, let's isolate one variable in one of the equations, I will isolate y on the first one.

y = 8 - 2x

Now we can replace that in the other one to get:

x - 3*(8 - 2x) = - 3

x - 24 + 6x = -3

7x = -3 + 24

7x = 21

x = 21/7 = 3

And the value of y is:

y = 8 - 2x = 8 - 2*3 = 2

The solution is x = 3 and y = 2.

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Answer:

In the case presented, the range is the difference between the maximum value and the minimum value of the data. The range describes the breadth of the data and how much they vary from the minimum value to the maximum value. Therefore, the range indicates the dispersion of the data.

The statement indicates that the range is 5, which means that the most flights made by students is 5. Since the data has a narrow dispersion, we can conclude that most students have taken a similar number of flights, implying that most students have flown an amount close to the maximum number observed.

Therefore, the option that best describes the dispersion of the data is: "The data has a range of 5, which is a narrow dispersion. This means that most students have taken a similar number of flights."

Step-by-step explanation:

Answer:

0 < a < 6

or

(0, 6) in interval notation

Step-by-step explanation:

The area of the triangle is
[tex]Area \;A = \dfrac{1}{2}(base \cdot height)\\[/tex]

We are given base = 6 in, height = a and area A < 18 in²

Using the formula for area we get

[tex]A = (1/2)(6 \cdot a) = 3a[/tex]

We know this area is < 18

So 3a < 18

Dividing both sides by 3 gives us
3a/3 < 18/3

a < 6

So height a must be less than 6 inches.
Height cannot be 0 so the lower bound on height is

a > 0

Putting these together we get the rang of a as
0 < a < 6

In Interval notation this is written as (0, 6)

Hope that helps you. Have confidence in yourself and seek help for your doubts here or elsewhere on the net. You will succeed

Answer: It is 34$ per one ticket

Step-by-step explanation:

$374 divided by 11 is 34

Answer:

$34 per ticket

Step-by-step explanation:

We were told $374/11tickets.

We are looking for how much per 1 ticket.

Divide to find the per-ticket cost.

Use either 374÷11

374/11 .

374÷11 = 34

This means $34 per ticket.

One of the numbers is 21, and the other number is 2.5

What is an algebraic expression?

An algebraic expression is when we combine numbers and words to solve a mathematical problem.

Let's call one of the numbers "x". We know that x is 8 times greater than the other number, which we'll call "y". So we have:

y = x / 8

The product of x and y is 57, so:

x * y = 57

Substituting y = x / 8 into the equation above:

x * (x / 8) = 57

Expanding the right side of the equation:

[tex]x^2 / 8 = 57[/tex]

Multiplying both sides by 8:

[tex]x^2 = 8 * 57[/tex]

Solving for [tex]x^2[/tex]:

[tex]x^2 = 456[/tex]

Taking the square root of both sides:

[tex]x =\sqrt{456}[/tex]

x = 21

So, One of the numbers is 21, and the other number is 21 / 8 = 2.5.

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Answer:

(7^2)^2

Step-by-step explanation:

(7^-2)*(7^6)=7^-2+6

......since the base 7 is the same, when u multiply them, you should add the exponents and keep 7 as it is. That will be 7^4, which in equivalent to ans D(7^2)^2

Answer:

160 tourists like only one place. This can be determined by using a Venn diagram. Of the 500 tourists surveyed, 350 like Pokhara, 200 like Chitwan, and 50 like both places. That leaves 20 who like neither of the two places. To get the number of tourists that like only one place, subtract the number of tourists who like both (50) and the number of tourists who like neither (20) from the total number of tourists surveyed (500), resulting in a total of 160 tourists who like only one place.

To verify if the representation is a function for this problem, we should verify if each input is mapped to a single output. If there is an input that is mapped to more than one output, then the relation is not a function.

A relation represents a function when each input value is mapped to a single output value.

On a graph, a function is represented if the graph contains no vertical aligned points, that is, if there are no values of x at which we could trace a vertical line that would cross the graph of the function more than once.

With arrows, only one arrow can depart from each value of x, or more than one arrow departing from the same value of x but necessarily arriving at the same value of y.

The problem is incomplete, hence the general procedure to verify if a relation represents a function was presented.

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Answer:

For exercise 11: x = 64

For exercise 12: x = 66

For exercise 13: x = 89

For exercise 14: x = 99

Step-by-step explanation:

The sum of interior angles of an n-sided polygon = [tex](n- 2 )[/tex] x [tex]180^{o}[/tex]

where n = number of sides

For all the four figures in this exercise, n = 4

Therefore, Sum of interior angles = [tex](4 - 2)[/tex] x [tex]180^{o}[/tex]

                                                          = 2 x [tex]180^{o}[/tex]

                                                          = [tex]360^{o}[/tex]

For Exercise 11:

[tex]x^{o} + 100^{o} + 130^{o} + 66^{o} = 360^{o}[/tex]

[tex]x^{o} + 296^{o} = 360^{o}[/tex]

[tex]x = 360 - 296[/tex]

x = [tex]64^{o}[/tex]

Apply the above stated concept in the other three exercises

Answer: $3,000

(There are 7 days in a week) I don't know if i'm correct or not but it should be the answer.

Answer:

C

Step-by-step explanation:

3607 ( "7" ones)

7391 ( "7" thousands)

1738 ( "7" hundreds)

7246 ( "7" thousands)

Step-by-step explanation:

2.5:10 = 1/4

1.4:1.8 = 7/10

0.04: 0.3 = 2/50

1/5: 4/5 = 1/5

3/4: 1/2 = 3/2

6.2:5 2/5 = 12/5

Answer:

x = -16 and x = 1

Step-by-step explanation:

"Finding the roots" means solving the equation. We'll set the equation equal to 0 (replace f(x) with zero) and factor.

0 = x^2 + 15x - 16

0 = (x + 16)(x - 1)

This is factored.

Using the Zero Product Property, we separate this into two small equations.

x+16 = 0 and x-1 = 0

Solve these one-step equations.

x = -16 and x = 1

These are the roots (and roots are solutions, are zeros, are x-intercepts) If the question ask for zeros, roots, solutions or x-intercepts, set it equal to 0, factor and solve.

Answer:

y = - [tex]\frac{5}{2}[/tex] x - 2

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 2, 3) and (x₂, y₂ ) = (0, - 2) ← 2 points on the line

m = [tex]\frac{-2-3}{0-(-2)}[/tex] = [tex]\frac{-5}{0+2}[/tex] = - [tex]\frac{5}{2}[/tex]

the line crosses the y- axis at (0, - 2 ) ⇒ c = - 2

y = - [tex]\frac{5}{2}[/tex] x - 2 ← equation of line

The area of the given parallelogram is 6.6 square units.

The region or space occupied by a parallelogram in a two-dimensional plane is referred to as the area of a parallelogram. A unique category of a quadrilateral is a parallelogram.

A quadrilateral is referred to as a parallelogram if it has two sets of parallel opposite sides. A parallelogram can be anything from a rectangle to a square to a rhombus.

The area of the partogram is calculated as:-

Area =  Base x Height

Area = 2.2 x 3

Area = 6.6 square units

Therefore, the parallelogram will have an area of 6.6 square units.

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Work Shown:

A = the 1st marble is blue

B = the 2nd marble is green

Replacement is applied. This makes A and B independent.

P(A) = (4 blue)/(10 total) = 4/10 = 2/5

P(B) = (2 green)/(10 total) = 2/10 = 1/5

P(A and B) = P(A)*P(B) ... see note below

P(A and B) = (2/5)*(1/5)

P(A and B) = 2/25

Note: The equation is valid because events A and B are independent.

Answer:

1.106209714987%

Step-by-step explanation:

Negative values detected. All input values threated as percentages (e.g. an input of 0.1 is threated as 0.1%, -10 is threated as -10%).

Answer: Let's call the measure of the angle x.

The complement of the angle is (90 - x) degrees, and the supplement is (180 - x) degrees.

So, using the information given in the problem, we can set up an equation:

5 * (90 - x) = 2 * (180 - x) - 24

Expanding both sides and simplifying, we get:

450 - 5x = 360 - 2x - 24

Solving for x, we get:

6x = 294

x = 49

Therefore, the measure of the angle is 49 degrees.

Step-by-step explanation:

Answer: a) It costs more money to make 101 photocopies than 100 photocopies. This can be seen from the graph as the cost increases as the number of photocopies increases.

b) You cannot buy more than 500 photocopies with $40. This can be seen from the graph as the cost of making photocopies exceeds $40 when the number of photocopies is more than 500.

Step-by-step explanation:

The solution is,

a)  it costs more money to make 100 photocopies

b) you can buy more than 500 photocopies for $40

Here, we have,

we know that,

A pair of numbers that use the separations between the two reference axes to define the location of a point on a coordinate plane. usually represented by the x- and y-values, respectively, (x, y).

a) In the  graph , 100 photocopies cost $10,

For 101  photocopies, the point on the line comes below of 10 on y axis

So, it costs more money to make 100 photocopies

b)  graph arrow shows line moves on...

so, you can buy more than 500 photocopies for $40

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Step-by-step explanation:

Find 1/4 of 56

56 / 4 = 14

Now

56-14=42

Now

42/7=6

6x4=24

42-24=18

18 copies left

Step-by-step explanation:

x=97+40 degree (being sum of two interior angle is equal to one exterior angle)

The expression for the statement is 20 - (6 + b).

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

Given statement is 20 decreased by the sum of 6 and b.

Sum means adding two or more numbers or expressions.

Sum of 6 and b means 6 + b.

Decreased means some number is subtracted.

The expression is 20 - (6 + b).

Hence the expression for the phrase is 20 - (6 + b).

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Your options for the question seems a little confusing. Probably the options for the question is given below :