In Juan's coin bank there are nickels (n),
dimes (d), and quarters (q). The number of
quarters is one-quarter the number of dimes, and
the number of nickels is twice the number of
quarters. The total value of the coins is $6.00.
Find the number of each type of coin. [Show all
work.]

Answer:

The linear equation is y = 450 - 30 x, where y is the number of pages

Lourdes has left to read after x days

Step-by-step explanation:

Each day, Lourdes reads 30 pages of a 450-page book

- We need to write a linear equation to represent the number of pages

 Lourdes has left to read after x days

∵ Lourdes reads 30 pages each day

∵ Lourdes will read for x days

∴ The number of pages Lourdes will read in x day = 30 x

- The left pages will be the difference between the total pages of the

 book and the pages Lourdes read

∵ The book has 450 pages

∵ Loured will read 30 x in x days

∴ The number of pages left = 450 - 30 x

- Assume that y represents the number of pages Lourdes has left

 to read after x days

∴ y = 450 - 30 x

The linear equation is y = 450 - 30 x, where y is the number of

pages Lourdes has left to read after x days

Answer:

X = 16

Step-by-step explanation:

These are supplementary angles, so they equal 180.

5x + 27 + 5x - 7 = 10x + 20

10x + 20 = 180

10x + 20 - 20 = 180 - 20

10x = 160

10x ÷ 10 = 160 ÷ 10

X = 16

Hope that helped you and have a good day!

The graph of an inequality is shown below -

The graph of a two-variable inequality is the set of points that describe all solutions to the inequality. The coordinate plane is split in half by a boundary line created by a linear inequality, with one-half representing the solutions to the inequality.

It's a line with a shaded side on one side to show which x-y pairings are the inequality's solutions.

Example -

Let us take a equation, 4x + 8y ≤ -24

Now, solve the above equation in the form of slope-intercept.

4x + 8y ≤ -24

or, 8y ≤ - 4x - 24

or, y ≤ -(1/2)x - 3

Now, the graph becomes according to the slope-intercept form is:

Here we noticed that,

This side of the inequality is shaded below (instead of above) because y is lower than (or equal to) the other side.

Because working with a "or equal to" inequality, draw a solid line rather than a dashed one. Points on the solid line denote locations where the inequality has been solved.

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Answer:

Step-by-step explanation:

the first pic

2b-a

2(7)-3

14-3

answer is 11

second pic

the answer is b^5/a

third pic

the last one 1.13 ft

Answer: No

Step-by-step explanation:

37 degrees Celsius to Fahrenheit is 98.6 degrees.

Answer:

.5 = 50%

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

So probabilityof getting a head or tail, when an unbiased coin is tossed is = 1

Answer:

The volume of the hemisphere is 496741.6 m³

Step-by-step explanation:

The volume of an sphere is given by:

In which  and r is the radius.

An hemisphere is half of an sphere, so it's volume is half the sphere's volume. So

In this question:

. So

The volume of the hemisphere is 496741.6 m³

Answer:

x=2

Step-by-step explanation:

Answer:

Domain: [-4,4]

Range: [-4,6]

Step-by-step explanation:

To domain pertains to the x-coordinates, while the range pertains to the y-coordinates.

Looking at the graph, we can see that the farthest point to the left is (-4,3) and the farthest point to the right is (4,6). Now, we know that the domain is [-4,4].

Looking at the graph, we can see the highest point is (4,6) and the lowest point is (0,-4). Now, we know the range is [-4,6].

Now, we know that the domain is [-4,4] and the range is [-4,6].

Answer:

D

Step-by-step explanation:

7x - 4 = -18            (add 4 to both sides)

7x = -14                  (divide both sides by 7)

x = -2

the answer is D

Answer:

G because y+y+y is the exact same as 3 y

Answer:

x = 20°

Step-by-step explanation:

Lines and Angles

Rays PM and MQ divide the straight-line LN angle of 180° into three angles: 45°, 6x-5, and x.

Thus, we have:

45 + 6x - 5 + x = 180

Simplifying:

40 + 7x = 180

Subtracting 40:

7x = 180 - 40

7x = 140

Dividing by 7:

x = 140/7 = 20

x = 20°

Answer: y=-3x-5

Step-by-step explanation:

(0,-5)   (-1,-2)

\(\displaystyle\\\frac{x-x_1}{x_2-x_1} =\frac{y-y_1}{y_2-y_1}\)

x₁=0     x₂=-1     y₁=-5    y₂=-2

\(\displaystyle\\\frac{x-0}{-1-0}=\frac{y-(-5)}{-2-(-5)} \\\\\frac{x}{-1} =\frac{y+5}{-2+5} \\\\-x=\frac{y+5}{3}\)

Multiply both parts of the equation by 3:

\(-3x=y+5\\\\-3x-5=y+5-5\\\\-3x-5=y\)

\(Thus,\ y=-3x-5\)

The required match of exponents is below the description with the correct solving steps in the solution part.

The product rule is an exponent rule that states that when you multiply similar bases, the add exponents.

For example, (a²)·(a³) = a²⁺³ = a⁵

1. How many times larger is 2 x 10⁻² then 3 x 10⁻⁶

Subtract by getting the same exponent to be like terms.

2. What is the difference between 2 x 10⁻² and 3 x 10⁻⁶?

Subtract coefficients and then add the exponents.

3. If you are 400 times 2 x 10⁻² away from the sun, how far are you?

Multiply by changing the number to Scientific Notation - multiply coefficients and add exponents.

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A. True. A compound event may consist of two dependent events. Dependent events are those in which the outcome of the first event affects the outcome of the second event. For example, drawing a card from a deck and not replacing it before drawing a second card would be an example of dependent events.

The area of the enclosure is approximately 128.6 acres

To find the area of the trapezoid ABCD, we first need to find the lengths of its parallel sides. Let's use the fact that the angles of a quadrilateral add up to 360 degrees:

Angle ABC = 124 degrees

Angle BCD = 85 degrees

Angle CDA = 96 degrees

Angle DAB = 360 - 124 - 85 - 96 = 55 degrees

Now we can use the tangent function to find the lengths of the sides:

tan(2 degrees) = (height of AB) / (distance between Anna and Benito)

(height of AB) = (distance between Anna and Benito) × tan(2 degrees)

(distance between Anna and Benito) = (713 - 690) / tan(2 degrees) ≈ 18490.3 ft

(height of AB) ≈ 429.4 ft

Similarly, we can find the height of CD:

tan(3 degrees) = (height of AD) / (distance between Anna and Deon)

(height of AD) = (distance between Anna and Deon) × tan(3 degrees)

(distance between Anna and Deon) = (725 - 690) / tan(3 degrees) ≈ 8639.5 ft

(height of AD) ≈ 459.6 ft

Now we can use the trapezoid area formula:

Area = (height of AB + height of CD) × (sum of the parallel sides) / 2

Area = (429.4 + 459.6) × ((18490.3 + 8639.5) / 2) / 5280 ≈ 128.6 acres

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Using the given ratio we will get that:

We know that there are a total of 210 points to be divided.

Gerardo gets 4 fails

Rubén gets 6 fails.

Sara gets 12 fails.

Then we have the ratio 4 : 6 : 12

The total of that is 4 + 6 + 12 = 22 fails.

Then; Gerardo gets (4/22) of the points:

G = (4/22)*210 = 38

Ruben gets (6/22) of the points:

R = (6/22)*210 = 57

Sara gets (12/22) of the points:

S = (12/22)*210 = 115

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Answer:

4 (8) - 3 x 81 is equivalent

Step-by-step explanation:

4 (3 + 5) - 3 x \(9^{2}\)

4 (8) - 3 x 81

32 - 3 x 81

31 - 243

-212

The product of the equations is A = ( k - 1 ) / k²

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.

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 data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

Let the first variable be p = ( 3k / ( k + 1 ) )

Let the second variable be q = ( k² - 1 ) / 3k³

And , A = p x q

Substituting the values in the equation , we get

A = ( 3k / ( k + 1 ) ) x ( k² - 1 ) / 3k³

On simplifying the equation , we get

A = ( 3k / ( k + 1 ) ) [ ( k + 1 ) ( k - 1 ) ] / 3k³

A = ( 1 ) ( k - 1 ) / k²

On further simplification , we get

A = ( k - 1 ) / k²

Hence , the equation is A = ( k - 1 ) / k²

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Edward has 12 coins of the quarter and 8 coins of nickel with him

Total number of coins = 20

The total amount of money = $3.40

Let x represent the number of quarters and y represent the number of nickels

Formulating the equations we get:

x + y = 20-------(1)

0.25x + 0.05y = 3.40

Simplifying by removing the decimals and solving

25x + 5y = 340------(2)

Multiplying equation (1) by 5 and subtracting with equation (2) we get the following:

5x + 5y = 100

25x + 5y = 340

= 20x = 240

x = 12

So, y = 8

So, the number of quarters is 12 and the number of nickels is 8

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The expected value of sales at a price of $1 is 11.015 for the given regression demand equation.

In the regression demand equation e(log(sales | price)) = 11.015 - 2.442 log(price), you want to find the expected value of sales at a price of $1. To find the expected value of sales, you need to substitute the given price of $1 into the equation and solve for the sales. Substituting the price of $1 into the equation, you get: e(log(sales | 1)) = 11.015 - 2.442 log(1). Since log(1) = 0, the equation simplifies to: e(log(sales | 1)) = 11.015 - 2.442 * 0, e(log(sales | 1)) = 11.015
Therefore, the expected value of sales at a price of $1 is 11.015.

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Answer:

I think its C. because slope is the rate of change and that graph has a decreasing slope. C makes sense to me but not 100% sure.

Answer:

7.50

Step-by-step explanation

Multiply 1.50 by 5 and you get 7.50.

As per the sample this is an example of a random sampling method.

The random sampling method is a type of probability sampling technique in which all members of the population have an equal chance of being selected for the sample.

A marketing researcher is interested in drawing a sample of 30 participants out of the 100 potential participants who are present.

To do this, the researcher writes each participant's name on a separate, identical piece of paper and places all the names in a bowl.

The researcher then proceeds to pick names arbitrarily until she has chosen 30 participants.

The researcher can then analyze the data from the chosen sample to gain insights into the larger population.

1. Identify the population of potential participants (e.g. 100).

2. Write each participant's name on a separate, identical piece of paper.

3. Place all the names in a bowl.

4. Pick names arbitrarily until 30 participants are selected.

5. Analyze the data.

This method is used to ensure that the sample is representative of the population and that the results of the study are unbiased.

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-4x + y = 7 is the line parallel tο the line graphed. Optiοn D is cοrrect.

Parallelism is a writing style that uses similar grammatical structures, phrases, οr wοrds tο make a pοint. It is used tο emphasize a pοint and make the writing mοre interesting and easier tο understand. Parallelism is used in different types οf writing such as persuasive writing, pοetry, stοries, and legal dοcuments.

Parallelism can alsο be used in speech, allοwing the speaker tο emphasize their pοint. It creates balance and structure in the writing, making it mοre οrganized and easier tο read. Parallelism can alsο be used tο create rhythm in the writing. By creating rhythm, the writing becοmes mοre memοrable and easier tο understand.

The line parallel will have a same slοpe

Lets find the slοpe

Any two pοints form the graph are, (1, 1) and (0, -3)

Slope m = \($ \frac{y_2 - y_1}{x_2 - x_1}\)

Slope m = \($ \frac{-3 -1}{0 - 1}\)

m = 4

Nοw, frοm the given οptiοns,

a. y=x+3 is nοt parallel as it have a οppοsite slοpe.

b. 4x + 3y = 6, write in y-intercept fοrm

   y =  (-4x + 6)/y. Nοt parallel

c. y =- 3x+2 is nοt parallel as it have a οppοsite slοpe.

d. -4x + y = 7, write in y-intercept fοrm

   y = 4x + 7, That is parallel as the slοpe is same.

Therefοre, -4x + y = 7 is the line parallel tο the line graphed.

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Complete question:

Answer:

The measure is the measure that it is you forgot the picture

Step-by-step explanation:

Answer:

a; r=1 is the answer

Step-by-step explanation:

Answer:

c).r=1

Step-by-step explanation:

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By mathematical induction, we have shown that A^p is symmetric for any positive integer p.

To prove that A^p is symmetric for any positive integer p, we will use mathematical induction.

Base case: p = 1

Since A is symmetric, we have A = A^T. Therefore, A^1 = A is also symmetric.

Inductive step

Assume that A^k is symmetric for some positive integer k. That is, (A^k)^T = A^k.

We want to show that A^(k+1) is symmetric as well. That is, we want to show that (A^(k+1))^T = A^(k+1).

We have

(A^(k+1))^T = (A^k × A)^T (by definition of A^(k+1))

= A^T × (A^k)^T (by the transpose of a product rule)

= A^T × A^k (since we assumed (A^k)^T = A^k)

= (A^k × A)^T (since A is symmetric)

= A^(k+1)

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The given question is incomplete, the complete question is:

If A is a symmetric matrix, use mathematical induction to show that the matrix A^p is also symmetric for any positive integer p.

Answer:

x = complement

x + 5.2 = first angle (5.2 more than complement)

measure of two complementary angles add up to 90.

x + x+ 5.2 = 90

2x = 84.8

x = 42.4

other angle = x + 5.2 = 42.4 + 5.2 = 47.6

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Step-by-step explanation:

Hope it will help you .

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