the ratio of fiction books to non-fiction
books in Roxanne's library is 7 to 9.
If Roxanne owns 182 fictions books
how many non-fiction books does she​

The conversion of 240 minutes in hours is 4 hours.

Hours and minutes are units of time used to measure the duration of events or the amount of time that has elapsed. An hour is a unit of time equal to 60 minutes or 3,600 seconds. It is typically used to measure the duration of longer events, such as a movie, a class, or a workday.

To convert 240 minutes to hours, you can divide 240 by 60 (since there are 60 minutes in one hour).

240 minutes / 60 = 4 hours

Therefore, 240 minutes is equivalent to 4 hours.

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Answer:

Approximately 11 inches

Step-by-step explanation:

Answer: d 11.1 inches

Step-by-step explanation:

Cute

Answer:

y=3x+15

Step-by-step explanation:

Answer:

A is the correct answer

have a nice day

The solution of the given system is x ≤  -4 or x  ≥  4.

Hence, option A is correct.

Use the concept inequalities defined as:

An inequality is a mathematical statement that uses the inequality symbol to indicate the relationship between two expressions. Both sides of an inequality sign have different expressions.

It signifies that the expression on the left should be more or smaller than the expression on the right, or vice versa. Literal inequalities occur when the relationship between two algebraic expressions is defined using inequality symbols.

The given system is,

4x ≤  -16 or 3x + 5 ≥ 17

Proceed with,

4x ≤  -16

Divide both sides by 4,

x ≤  -4

Now proceed with,

3x + 5 ≥ 17

Subtract 5 on both sides we get,

3x  ≥ 12

Divide both sides by 3

x  ≥  4

Hence,

For the given system x ≤  -4 or x  ≥  4 which is option A.

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The angle measures for this problem are given as follows:

Then the four letter code is given as follows:

FBCA.

For angle A, first we have that (2x + 35)º and (8x - 40)º are vertical angles, hence the value of x is obtained as follows:

8x - 49 = 2x + 35

6x = 84

x = 84/6.

x = 14

This means that the measure of angle A is obtained as follows:

m<A = 2(14) + 35 = 28 + 35 = 63º.

For angle B, the two angles are supplementary, hence the value of x is given as follows:

10x - 18 + 15x + 48 = 180

25x = 150

x = 150/25

x = 6.

Then the measure of angle B is given as follows:

m < B = 15x + 48 = 15(6) + 48 = 138º.

For angle C, the alternate interior angles are congruent, hence the value of x is obtained as follows:

7x + 5 = 12x - 75

5x = 80

x = 16.

Then the measure of angle C is obtained as follows:

m<C = 7x + 5 = 7(16) + 5 =  117º.

For item 4, the angles form a linear pair, meaning that they are supplementary and the value of x is obtained as follows:

27x - 21 + 10x + 16 = 180

37x = 185

x = 185/37

x = 5.

Then angle D is calculated as follows:

m < D = 27x - 21 = 27(5) - 21 = 114º.

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(27d^(2))/(8c^(2)) contains the C term with the same exponent and the d term with a different exponent as compared to the given expression.  The correct is option (C).

The given expression is ((3C^(4)d^(4))/(2d^(9)))^(3).

We need to find the expression that is equivalent to the given expression. Here, we will use the properties of exponents to simplify the given expression, and then we will compare it with the expressions .

Let us simplify the given expression.

((3C^(4)d^(4))/(2d^(9)))^(3) = (3C^(4)d^(4)/2d^(9))^(3) = (3/2)(C^(4)d^(4-9))^(3) = (3/2)(C^(4)d^(-5))^(3) = (3/2)C^(4*3)d^(-5*3) = (3/2)C^(12)/d^(15)

Now, we need to compare this expression with the expressions given in the answer choices.

Option (A) (3d^(4))/(2c^(2)) cannot be the equivalent expression because it does not contain C and d terms with the same exponents.

Option (B) (81d^(6))/(8C^(6)) cannot be the equivalent expression because it contains the C term with a different exponent as compared to the given expression.

Option (C) (27d^(2))/(8c^(2)) contains the C term with the same exponent and the d term with a different exponent as compared to the given expression. Hence, this expression is equivalent to the given expression.

Hence, this expression is equivalent to the given expression .Therefore, the correct is option (C) (27d^(2))/(8c^(2)).

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\( \red { \green {\boxed {\boxed{Answer}}}}\)

\(x + 3 > 10\)

\(x > 10 - 3\)

\(x > 7\)

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Answer:

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

hope this helps

In order to add or subtract matrices, the matrices must have the same dimensions.

When adding or subtracting matrices you need to add/subtract corresponding elements.

In order to add or subtract matrices, the matrices must have the same dimensions.

When multiplying a matrix by a scalar you are multiplying by a constant.

If A is a matrix and you need to find 4A, you should multiply each element of A by 4.

If A is a matrix and you need to find \(A^T\) (transpose of A), you should interchange the rows and columns of A.

That means row 1 will become column 1, row 2 will become column 2, and so on.

Column 3 will become row 3.

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128 gallons

Explanation: 20 X 4= 80

12 X 4= 48

80+48= 128

To find the value of h such that the system has infinitely many solutions, the two equations must be equivalent, meaning they represent the same line. Let's analyze the given equations:

Equation 1: -9x - 21y = -12
Equation 2: 27x + hy = 36

First, we can simplify Equation 1 by dividing by -3:
3x + 7y = 4

Now, let's compare the coefficients of the x and y terms in both equations. We can notice that the coefficient of x in Equation 2 is 9 times the coefficient of x in the simplified Equation 1. To make the two equations equivalent, the coefficient of y in Equation 2 should also be 9 times the coefficient of y in the simplified Equation 1:

9 * 7y = hy
9 * 7 = h
h = 63

So, when h = 63, the two equations represent the same line, and the system has infinitely many solutions.

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To evaluate dw/dt at t=4, we need to find the derivative of w(x, y) with respect to t and then substitute t=4.

Given:

w(x, y) = e^y - ln(x)

x = t^2

y = ln(t)

First, let's find the partial derivatives of w with respect to x and y:

∂w/∂x = -1/x

∂w/∂y = e^y

Next, let's find the derivatives of x and y with respect to t:

dx/dt = 2t

dy/dt = 1/t

Now, we can use the chain rule to find dw/dt:

dw/dt = (∂w/∂x)(dx/dt) + (∂w/∂y)(dy/dt)

= (-1/x)(2t) + (e^y)(1/t)

Substituting the given values of x and y:

= (-1/(t^2))(2t) + (e^ln(t))(1/t)

= -2/t + t/t

= -2/t + 1

Finally, substituting t=4:

dw/dt = -2/4 + 1

= -1/2 + 1

= 1/2

Therefore, the value of dw/dt at t=4 is 1/2.

So, the answer is: (a) 1/2.

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The heat loss rate (Q) in units of watts per square meter (W/\(m^2\)) for the given double-pane window is approximately 35.91 * A W/\(m^2\), where A is the area of the window in square meters.

Given:

Thickness of glass layers = 3mm

Thickness of air layer = 3mm

Outside temperature = -20°F = -28.9°C

Inside temperature = +72°F = 22.2°C

To calculate the heat loss rate, we will use the formula for heat conduction:

Q = (k * A * ΔT) / d

Where:

Q is the heat loss rate

k is the thermal conductivity

A is the area of the window

ΔT is the temperature difference between the inside and outside

d is the total thickness of the window

We need to convert the thicknesses of the glass and air layers to meters:

Thickness of glass layers = 3mm = 0.003m

Thickness of air layer = 3mm = 0.003m

We can now calculate the total thickness (d) of the window:

d = 2 * thickness of glass layers + thickness of air layer

d = 2 * 0.003m + 0.003m

d = 0.009m

Assuming the dimensions of the window are provided, let's consider:

Length = L meters

Width = W meters

The area of the window (A) is given by:

A = Length * Width

The thermal conductivity values in SI units are approximately:

k_glass ≈ 0.8 W/(m·K)

k_air ≈ 0.024 W/(m·K)

Now, let's calculate the temperature difference (ΔT) in Celsius:

ΔT = 22.2°C - (-28.9°C)

ΔT = 51.1°C

Substituting the values into the heat conduction formula:

Q = (k * A * ΔT) / d

Q = (0.8 W/(m·K) * A * 51.1°C) / 0.009 m

Simplifying further, we have:

Q = 44.89 * (0.8 * A) W

Therefore, the heat loss rate (Q) in units of watts per square meter (W/\(m^2\)) for the given double-pane window is approximately 35.91 * A W/\(m^2\), where A is the area of the window in square meters.

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For question 9 the answer is option D.63cm

\(\pi x 3^2 x 7= 197.92\\\)

\(197.92/Pi=62.77\) Which would get rounded up to 63cm^2

Answer:

The correct answer is B. Hope this helps. Can I have brainliest if I am right please?

Step-by-step explanation:

Answer:

Answer is B baguettes.

Step-by-step explanation:

A ray has only one endpoint. A segment has two endpoints.

What is a line?

A line is an object in geometry that is infinitely long and has neither width nor depth nor curvature. Since lines can exist in two, three, or higher-dimensional spaces, they are one-dimensional objects. In everyday language, a line segment with two points designating its ends is also referred to as a "line."

A ray and a segment are parts of a line.

This line segment has two fixed-length endpoints, A and B. The distance between this line segment's endpoints A and B is its length.

In other words, a line segment is a section or element of a line with two endpoints. A line segment, in contrast to a line, has a known length.

A line segment's length can be calculated using either metric units like millimeters or centimeters or conventional units like feet or inches.

Ray has only one endpoint and the other ends go infinity.

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Answer:

7 and 8

Step-by-step explanation:

7^2=49

8^2=64

49+64=113

Answer:

7 and 8

Step-by-step explanation:

The leftmost vertex is (0, 4), and the rightmost vertex is (2.5, 0). Therefore, the smallest x-value (a, b) is 0, and the largest x-value (a, b) is 2.5.

The extreme points of the feasible region in linear programming are the vertices of the polygon formed by the constraints. The smallest x-value is the leftmost vertex, and the largest x-value is the rightmost vertex.

The extreme points of the feasible region are the vertices of the polygon formed by the constraints of the linear programming problem. Each vertex represents a unique combination of values for the decision variables that satisfies all of the constraints.

The smallest x-value (a, b) of the extreme points corresponds to the leftmost vertex of the feasible region, and the largest x-value (a, b) corresponds to the rightmost vertex of the feasible region.

For example, consider the following linear programming problem:

Maximize 3x + 2y

Subject to:

x + y ≤ 4

2x + y ≤ 5

x, y ≥ 0

The feasible region is a polygon with vertices at (0, 0), (0, 4), (1.5, 2.5), and (2.5, 0). The leftmost vertex is (0, 4), and the rightmost vertex is (2.5, 0). Therefore, the smallest x-value (a, b) is 0, and the largest x-value (a, b) is 2.5.

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Answer:

A.1/10 is close to 0, and 4/9 is close to 1/2.

Step-by-step explanation:

Sandy and Brett are painting a house. Sandy painted 1/10 of the house and Brett painted 4/9 of the house. To estimate how much more Brett painted than Sandy, which statement is true?

To estimate how much more Brett painted than Sandy, which statement is true?

A.1/10 is close to 0, and 4/9 is close to 1/2.

B.1/10 is close to 1/2, and 4/9 is close to 1/2.

C.1/10 is close to 0, and 4/9 is close to 1.

D.1/10 is close to 12, and 4/9 is close to 1.

How much more Brett painted than Sandy is calculated as:

The fraction Brett painted - Fraction Sandy painted

= 4/9 - 1/10

The Lowest Common Denominator = 90

Hencd:

= 4 × 10 - 1 × 9/90

= 40 - 9 /90

= 31/90

Therefore, we convert each fraction to decimal

1/10 = 0.1

4/9 = 0.444

Hence, the correct option is Option A

Answer: c

Step-by-step explanation:

A. 52.50

B. 54.40

C. 51.00

D. 52.00

Answer:

220.455

Step-by-step explanation:

The number of ways coach can select students to compete in the race are 1820.

The selections are another name for combinations. The choice of items from a predetermined group of items corresponds to combinations. We don't want to organize anything here. We are going to choose them. We use the notation nCr to indicate how many distinct r-selections or combinations there are among a set of n objects. A combination is distinct from an arrangement or a permutation. No matter how the objects are arranged, combinations are produced by choosing some or all of them.

Given;

There are 16 students on your track team with  4 runners who run different parts of the race.

Now, n=16 and r=4;

nCr = 16C4

=16*15*14*13/4*3*2*1

=4*5*7*13

=1820

Therefore, by combination there are 1820 ways.

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Answer:

its b

Step-by-step explanation:

trust mee

Answer:

3,240

Step-by-step explanation:

Answer: i think it's v^4w^2 + 15v^2w^3 +2

Step-by-step explanation:

i simplified it on a math app

Given:

Please find the question.

To find:

non real complex number=?

Solution:

The non real complex number are imaginary number containing negative numbers in root.  

Here,

\(\to \frac{8}{3} +\sqrt{- \frac{7}{3}}\)

In this option it include the negative term that is in root so this is imaginary, therefore, the answer is "Option B".

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The standard form is 4x- y= 3.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

y-1=4(x-1)

Now, writing the above equation in standard form

y- 1 = 4x -4

y = 4x - 4 +1

y= 4x - 3

4x - y = 3

Hence, the standard form is 4x- y= 3.

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According to the question The equilibrium constant \((K_{eq})\) relates the concentrations of reactants and products \(K_{eq} \ for\ 2AB \rightleftharpoons 2A + 2B \ is\ 49.\)This indicates that the equilibrium position favors formation of products.

The equilibrium constant \((K_{eq})\) relates the concentrations of reactants and products in a chemical reaction at equilibrium. In the given reaction,

\(A + B \rightleftharpoons AB, the\ K_{eq}\ is\ 7\).

When considering the reaction \(2AB \rightleftharpoons 2A + 2B\), the stoichiometric coefficients are doubled on both sides. According to the principles of equilibrium, the equilibrium constant for the modified reaction can be obtained by squaring the original \(K_{eq}\).

Therefore, the \(K_{eq}\) for \(2AB \rightleftharpoons 2A + 2B is (K_{eq})^2 = (7)^2 = 49\). This indicates that the equilibrium position favors the formation of products in the double reaction compared to the original reaction.

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