I REALLY NEED HELP

it’s number 13

Answer: its 0 right or is it supposed to be a face or sumthin

Step-by-step explanation:

See attachment for the graph of the inequality -1 ≤ x ≤ 3

A linear inequality is an inequality that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

In this question, the expression of the inequality is given as:

-1 ≤ x ≤ 3

The above means that the set of values of x is between -1 and 3 (-1 and 3 are inclusive of the values of x)

So, the possible values of x are -1, 0, 1, 2 and 3

When the graph of the inequality is plotted, the graph would have the following properties:

Next, we plot the graph of the inequality -1 ≤ x ≤ 3

See attachment for the graph of the inequality -1 ≤ x ≤ 3

Read more about inequality at

https://brainly.com/question/25275758

#SPJ1

Answer:

Step-by-step explanation:

 a : b

 9 : 6

 2 : x

Cross multiply

6*2 = 9x

12 = 9x

12/9 = x

4/3 = x

Answer:

Complementary

Step-by-step explanation:

49°+41° = 90°

Responder:

Por favor, consulte la explicación.

Explicación paso a paso:

Dado lo siguiente:

Número de bailarines = 156

Sea número de bailarines en una columna = c

Número de bailarines seguidos = c + 20

Multiplicar el número de bailarines en fila y columna dará el número total de bailarines.

Por lo tanto,

c * (c + 20) = 156

c² + 20c = 156

c² + 20c - 156 = 0

c² + 26c - 6c - 156 = 0

c (c + 26) - 6 (c + 26) = 0

(c + 26) = 0 o (c - 6) = 0

c = - 26 o c = 6

C no puede ser negativo

Por lo tanto,

Número de bailarines en columna = 6

Número de bailarines en fila = 20 + 6 = 26

Based on the definition of congruent angles, the value of x is: 23.

Congruent angles have the same measure. Examples of angles that are congruent are:

Thus:

(5x + 16) = (6x - 7) -- congruent angles

Combine like terms

5x - 6x = -16 - 7

-x = -23

x = 23

Therefore, based on the definition of congruent angles, the value of x is: 23.

Learn more about congruent angles on:

https://brainly.com/question/1675117

The volume of the solid enclosed by the paraboloids is (16/3)π cubic units.

To find the volume of the solid enclosed by the paraboloids y = x^2 + z^2 and y = 8 - x^2 - z^2, we can set up a triple integral using cylindrical coordinates. This will allow us to find the volume by integrating over the region enclosed by the two surfaces.

First, we need to find the intersection of the paraboloids to determine the limits of integration. We set them equal to each other:

x^2 + z^2 = 8 - x^2 - z^2

Solve for x^2 + z^2:

x^2 + z^2 = 4

In cylindrical coordinates, we let x = rcos(θ) and z = rsin(θ), so r^2 = x^2 + z^2. The intersection becomes:

r^2 = 4
r = 2

Now, we can set up the triple integral:

Volume = ∫∫∫ (8 - x^2 - z^2 - (x^2 + z^2)) rdrdθdz

Substitute x = rcos(θ) and z = rsin(θ):

Volume = ∫∫∫ (8 - r^2cos^2(θ) - r^2sin^2(θ) - (r^2cos^2(θ) + r^2sin^2(θ))) rdrdθdz

Simplify and integrate over the region with r going from 0 to 2, θ going from 0 to 2π, and z going from x^2 to 8 - x^2:

Volume = ∫(θ=0 to 2π) ∫(r=0 to 2) ∫(z=x^2 to 8-x^2) 4r dr dθ dz

Evaluating the triple integral, we obtain:

Volume = (16/3)π

To learn more about paraboloids click here

brainly.com/question/30925041

#SPJ11

The length of the second lawn, L2, is three times the length of the first lawn, L1, for the given rectangular lawn.

To find the length of the second lawn, we need to determine the area of the first lawn and then calculate the length of the second lawn based on that.

The area of a rectangle can be found by multiplying its length by its width. Given that the width of the first lawn is 60 feet, we can find its area by multiplying 60 feet by the length of the first lawn.

Let's assume the length of the first lawn is L1. So, the area of the first lawn is 60 feet * L1.

The area of the second lawn is three times as big as the area of the first lawn. So, we can write the equation:

Area of second lawn = 3 * Area of first lawn

Substituting the values we know, we have:

60 feet * L2 = 3 * (60 feet * L1)

Now, let's simplify this equation:

L2 = 3 * L1

Know more about the Area

https://brainly.com/question/25292087

#SPJ11

The surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 24 meters is 1,670.5 square meters.

The surface area of a cone is calculated using the following formula:

Surface area = πr² + πrl, where π is approximately equal to 3.14, r is the radius of the base of the cone, and l is the slant height of the cone.

In this problem, we are given that the height of the cone is 42 meters and the diameter of the base is 24 meters. The radius of the base is half of the diameter, so the radius is 12 meters. The slant height of the cone can be calculated using the Pythagorean theorem.

l² = 12² + 42²

l² = 1764

l = 42.01 meters

The surface area of the cone is then calculated as follows:

Surface area = πr² + πrl

Surface area = 3.14 * 12² + 3.14 * 12 * 42.01

Surface area = 1,670.5 square meters

Here are some additional explanations:

To know more about area click here

brainly.com/question/13194650

#SPJ11

Answer:C. Easy

Step-by-step explanation:

Answer:

The correct answer is B.8v

Step-by-step explanation:

8v would equal multiplication, also heres the image showing so

Step-by-step explanation:

20=4*1.95+1.99n

n=6

Audrie can buy 6 notebooks

Answer:

4u+12

Step-by-step explanation:

2(2u+6)

4u+12

Answer:

4u + 12

Step-by-step explanation:

2(2u + 6)

=> 2(2u) + 2(6)

=> 4u + 12

Answer:

Increasing the sampling error (se) will lead to a larger sample size n.

Step-by-step explanation:

True. When determining the sample size n for the purpose of estimating a population mean, a fixed level of confidence (1-alpha) and population standard deviation are typically specified.

The sampling error (se) represents the maximum distance between the sample mean and the true population mean, which is typically set to a desired level of precision.

As the sampling error decreases (i.e., more precision is desired), the sample size n needs to increase in order to achieve the same level of confidence.

Therefore, increasing the sampling error (se) will lead to a larger sample size n.

To know more about standard deviation refer here

https://brainly.com/question/23907081#

#SPJ11

fractions with the same denominator added together

You must add the numerators and keep the same denominator when adding fractions with the same denominator. Since the denominators of the two fractions are the same, we must add the numerators while maintaining the same denominator, which is 4.

What are the parts of fraction?

A fraction consists of two components. The numerator is the figure at the top of the line. It details the number of equal portions that were taken from the total or collection. The denominator is the figure that appears below the line.

The number below the bar is called the denominator . It tells the number of equal parts into which the whole has been divided. The number above the bar is called the numerator. It tells how many of the equal parts are being considered.

To learn more about  fractions visit:

https://brainly.com/question/8482939

#SPJ4

Answer:

7 in

Step-by-step explanation:

2 in = 5 m8

35 mi/5 mi = 7 in

The equation of the quadratic function f with a vertex at (3, 7) and passing through the point (5, 11) is:

f(x) = (x - 3)^2 + 7

Let's find the equation of the quadratic function using the given information.

Given:

The quadratic function has a vertex at (3, 7) and passes through the point (5, 11).

We can use the vertex form of a quadratic function, which is given by:

f(x) = a(x - h)^2 + k

Where (h, k) represents the vertex of the parabola.

Using the vertex (3, 7), we have:

f(x) = a(x - 3)^2 + 7

Now, let's substitute the coordinates of the point (5, 11) into the equation to find the value of 'a'.

11 = a(5 - 3)^2 + 7

11 = a(2)^2 + 7

11 = 4a + 7

4a = 11 - 7

4a = 4

a = 4/4

a = 1

Now that we have the value of 'a', we can rewrite the equation:

f(x) = (x - 3)^2 + 7

Learn more about  quadratic function here

https://brainly.com/question/29775037

#SPJ11

The value of cos45 will be equal to ( 1 / √2 ).

Trigonometric Identities are equality statements that hold true for all values of the variables in the equation and that use trigonometry functions. There are numerous distinctive trigonometric identities that relate to a triangle's side length and angle.

Let the two sides of the triangle is having a unit length then the hypotenuse of the triangle will be √2.

Apply cosine law for the triangle:-

cos45 = Base / Hypotenuse

cos45 = 1 / √2

Therefore, the value of cos45 will be equal to ( 1 / √2 ).

To know more about trigonometric identities follow

brainly.com/question/22591162

#SPJ1

Answer:

4,144

Step-by-step explanation:

I have no idea what you are trying to say, but if you meant what does 592 x 7 equal to, it will be 4,144.

Check:

4,144 / 7 = 592

4,144 / 592 = 7

Hope this helped!

Have a supercalifragilisitcexpialidocious day!

The standard change in internal energy (ΔU°) for the given reaction is -88.2 kJ.

To calculate the standard change in internal energy (ΔU°) for the given reaction, we can use the following equation:

ΔU° = ΣνΔU°(products) - ΣνΔU°(reactants)

Where ν represents the stoichiometric coefficient of each species in the balanced chemical equation and ΔU° represents the standard change in internal energy for each species.

Given the following values:

ΔU°(CH₃OH(l)) = -277.7 kJ

ΔU°(CH₂(g)) = +52.3 kJ

ΔU°(H₂O(g)) = -241.8 kJ

The balanced chemical equation for the reaction is:

CH₄(g) + H₂O(g) → CH₃OH(l)

The stoichiometric coefficients are:

ν(CH₄) = -1

ν(H₂O) = -1

ν(CH₃OH) = +1

Substituting the values into the equation:

ΔU° = (ν(CH₃OH) * ΔU°(CH₃OH)) + (ν(CH₄) * ΔU°(CH₄)) + (ν(H₂O) * ΔU°(H₂O))

= (1 * -277.7 kJ) + (-1 * 52.3 kJ) + (-1 * -241.8 kJ)

Calculating the expression:

ΔU° = -277.7 kJ - 52.3 kJ + 241.8 kJ

= -88.2 kJ

Therefore, the standard change in internal energy (ΔU°) for the given reaction is -88.2 kJ.

To know more about energy:

https://brainly.com/question/28633890

#SPJ4

The integral ∬N dA over the region D, where D is defined by x² + y² ≤ 1, evaluates to π. This result is obtained by converting to polar coordinates and evaluating the double integral using the appropriate limits of integration.

To evaluate the integral ∬N dA over the region D given by D = {(x, y) : x² + y² ≤ 1}, we can use polar coordinates. In polar coordinates, the integral becomes:

∬N dA = ∫∫N r dr dθ,

where N = xy sin(x² + y²) and we integrate over the region D.

Converting to polar coordinates, we have x = rcosθ and y = rsinθ. The Jacobian of the transformation is r, so the integral becomes:

∫∫N r dr dθ = ∫∫(r²cosθsinθ)(rsin(r²))(r) dr dθ.

Now, let's evaluate the integral step by step:

∫∫N r dr dθ = ∫[0, 2π] ∫[0, 1] (r³cosθsinθsin(r²)) dr dθ.

Integrating with respect to r first, we have:

∫∫N r dr dθ = ∫[0, 2π] [-(1/2)cosθsinθcos(r²)]|[0, 1] dθ.

Applying the limits of integration and simplifying, we get:

∫∫N r dr dθ = ∫[0, 2π] (-(1/2)cosθsinθcos(1) + (1/2)cosθsinθ) dθ.

Integrating with respect to θ, we have:

∫∫N r dr dθ = [-(1/2)sin²θcos(1) + (1/2)θ] |[0, 2π].

Evaluating the limits of integration, we get:

∫∫N r dr dθ = (1/2)(2π) = π.

Therefore, the value of the integral ∬N dA over the region D is π.

To learn more about "integration" refer here:

https://brainly.com/question/30094386

#SPJ11

If 100 students participate in the fundraiser, each student needs to raise $137.50.If 25 students participate in the fundraiser, each student needs to raise amount $550.

Amount = (Total Amount Needed) ÷ (Number of Students)

For 60 students:

Amount = $275 ÷ 60 = $4.58

For 75 students:

Amount = $275 ÷ 75 = $3.67

For 40 students:

Amount = $275 ÷ 40 = $6.88

To solve this problem, we need to use a simple equation: Amount = (Total Amount Needed) ÷ (Number of Students). We can then plug in the given information to calculate the amount each student needs to raise. For example, if 50 students participate in the fundraiser, we can calculate that each student needs to raise $275 ÷ 50 = $5.50. We can then use this equation to calculate the amount that each student needs to raise if there are different numbers of students participating in the fundraiser. For example, if there are 100 students participating in the fundraiser, each student needs to raise $275 ÷ 100 = $2.75. Similarly, if there are 25 students participating in the fundraiser, each student needs to raise $275 ÷ 25 = $11.00.

Learn more about amount here

https://brainly.com/question/8082054

#SPJ4

10 kilowatts of electricity was used by the refrigerator.

Given the following data:

To find how much of a $70 electric bill is due to using the refrigerator:

Mathematically, energy is given by the formula:

\(Energy = power\) × \(time\)

However, we are required to find the amount of energy consumption for a $70 electric bill and as such we would simply divide the given variables as follows:

\(Energy = \frac{70}{7}\)

Energy = 10 kW

Therefore, 10 kilowatts of electricity was used by the refrigerator.

Read more: https://brainly.com/question/12193740

Answer:

y = 5 x + 3  

Step-by-step explanation:

I took the quiz

Thickness of a piece of clear tape: millimeters (mm), Height of a hamster: centimeters (cm), Distance from ground level to airplane in flight: kilometers (km)

Thickness of a piece of clear tape: millimeters (mm)

The thickness of a piece of clear tape is a very small measurement, typically in the range of a few millimeters. Using millimeters as the unit of measurement allows for a precise and accurate measurement of the thickness.

Height of a hamster: centimeters (cm)

The height of a hamster is a measurement of the distance from the ground to the top of its head. This is typically a small measurement, so using centimeters as the unit of measurement is appropriate. It allows for a precise and accurate measurement, while still being manageable in size.

Distance from ground level to airplane in flight: kilometers (km)

The distance from the ground level to an airplane in flight is a very large distance. Using kilometers as the unit of measurement is appropriate as it allows for an appropriate scale for such large distances. Other units, such as meters or feet, would be too small to accurately and effectively measure such distances. Additionally, using kilometers is consistent with other measurements of distance, such as between cities or countries, and allows for easy comparison and understanding.

Learn more about Distance at: brainly.com/question/31713805

#SPJ11

Answer:

answer is 15 and second one i dont know yet sorry am doing scoo

Step-by-step explanation:

Answer: A

The problem says "to the right" which means you will be *SUBTRACTING 4 to x ( the x-axis is left and right )

"down" means you will be subtracting from y ( y-axis is up and down)

Option C shows x - 4 and subtracts 3.

MY DUM B A$.S WASNT THINKING ITS C

Answer:

C

Step-by-step explanation:

fuction y=3/x intersects the coordinate axes at points (3; 1) and (1; 3). These coordinates on request will put 4 units to the right and 3 units down and will now be (5; 0) (7; -2). Try all the alternatives and the correct alternative comes out C: Eg. substitute the coordinate (5: 0) for the function C and it will be 0 = (3 / 5-4) -3 => 0 = 0 (this is the required function; if we replace the other coordinate (7; -2) why both sides of the function are equal)

To evaluate this integral, we need the limits of integration for r and θ, which are not given in the question. Once we have the limits, we can integrate ∫r^4cos(θ)sin(θ) with respect to r and then integrate the result with respect to θ.

To sketch the region of integration, r, we need to analyze the limits of integration. Since the integral is in polar coordinates, we'll have an outer limit, r, and an inner limit, θ. However, the equation of the region is not provided, so we cannot sketch it accurately without more information.

To evaluate the integral ∫∫r^2xy da over r using polar coordinates, we need to express x and y in terms of r and θ. Since r = √(x^2 + y^2) and x = rcos(θ), y = rsin(θ), we can substitute these into the integral.

The integral becomes ∫∫r^2(rcos(θ))(rsin(θ)) r dr dθ. Simplifying further, we have ∫∫r^4cos(θ)sin(θ) dr dθ.

Therefore, to evaluate this integral, we need the limits of integration for r and θ, which are not given in the question. Once we have the limits, we can integrate ∫r^4cos(θ)sin(θ) with respect to r and then integrate the result with respect to θ.

To know more about limits visit:

https://brainly.com/question/12207539

#SPJ11

Answer:

7.81 miles

Step-by-step explanation:

pythagorean theorem, 6 units downwards, and 5 east, so we have to calculate the hypotenuse, or sqrt( 6^2 + 5^2) which is sqrt61 or 7.81 miles