question 17 suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. after hours of burning, a candle has a height of centimeters. after hours of burning, its height is centimeters. what is the height of the candle after hours? clears your work. undoes your last action.

Answer:

(8.666666667, -15.66666667)

or in fraction form

(26/3, -47/3)

Step-by-step explanation:

First we want to get both of the equations into y-intercept form

x + y = -7

subtract x from both sides

y = -x - 7

and the other

4x + y = 19

subtract 4x from both sides

y = -4x +19

now we can graph them

(See attached screenshot)

[tex]\left[\begin{array}{ccc}-1&5\\7&-2\end{array}\right]\left[\begin{array}{ccc}x\\y&\end{array}\right] =\left[\begin{array}{ccc}7\\3&\end{array}\right][/tex] is the representation of system of equation x+5y=7, 7x-2y=3

A matrix is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and columns.

The system of linear equations

-x + 5y = 7

7x - 2y = 3

can be represented in matrix form as:

[tex]\left[\begin{array}{ccc}-1&5\\7&-2\end{array}\right]\left[\begin{array}{ccc}x\\y&\end{array}\right] =\left[\begin{array}{ccc}7\\3&\end{array}\right][/tex]

The matrix on the left represents the coefficients of the variables x and y, and the matrix on the right represents the constants on the right-hand side of each equation.

The vector on the left contains the variables x and y, and the vector on the right contains the constants.

Hence, [tex]\left[\begin{array}{ccc}-1&5\\7&-2\end{array}\right]\left[\begin{array}{ccc}x\\y&\end{array}\right] =\left[\begin{array}{ccc}7\\3&\end{array}\right][/tex] is the representation of system of equation x+5y=7, 7x-2y=3

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The percentage of students doing cycles is 37.98% ((204/535)*100).

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" is also used, the percent symbol, "%," is frequently used to indicate it.

A % is a number without dimensions and without a measurement system.

The other answers are:

After the dealer discount, the car will cost €10,540 (€12,400 * 0.85).

The current price of the television is €638.50 (€510.80 * 1.25).

The Netflix connection will cost €13.80 after the discount (€17.25 * 0.8).

The family will pay €252 in cash (30% of €840), and the amount of each monthly installment will be €126.

You have been discounted by 20% ((60-48)/60*100).

The car will cost €9,000 with the bonus (€12,000 - €3,000), and the family will save 25% of the original price (€3,000/€12,000*100).

The capital will produce €683.10 of interest (€3000 * 0.045 * 5).

The capital that the bank will return is €3,855 (€3700 + (€3700 * 0.075 * 6/12)).

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Cindy spent a total of $128.09 on ingredients for pies. She will be able to make 18 slices of pie with this amount of ingredients.

1. Cindy spent $65.25 on ingredients for blueberry pies and $62.84 on ingredients for cherry pies.

2. Add the two amounts together: $65.25 + $62.84 = $128.09

3. Each slice of pie sells for $3.50.

4. Divide the total spent on ingredients by the cost of a slice of pie: $128.09 / $3.50 = 18 slices of pie.

the complete question is :

Cindy spent $65. 25 on ingredients for blueberry pies and $62. 84 on

ingredients for cherry pies. Each slice of pie sells for $3. 50.How much did Cindy spend on ingredients for blueberry and cherry pies, and how many pies can she make from that?

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On solving the provided question, we can say that Amount of commission = Total sales value x Rate of commission = 3,200

aggregate attempting to calculate the time required, total number or quantity. The quantity at hand or under consideration is incredibly energetic. the overall result, importance, or import. Principal, interest, and a third accounting. amounts, amounting, and amounted are word forms. flexible noun The quantity of something is how much there is, how much you have, how much you require, or how much you obtain. He requires that sum of money to get by.

[tex]Amount of commission = 3,200\\Total sales value = 80,000//[/tex]

Rate of commission = 4% on sales

Amount of commission = Total sales value x Rate of commission

Amount of commission = 80,000 x 4%

Amount of commission = 3,200

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Answer:44

Step-by-step explanation:44444444

The independent variable of the question is c:the number of cars Lamar and Allie wash while the dependent variable is s: the number of hockey sticks Lamar and Allie will be able to purchase

The independent variable is defined as the variable that you change and control in your experiment. The dependent variable is defined as the variable that you don't have control over and is affected by the way that the independent variable reacts.

The parameters given are;

s = the number of hockey sticks Lamar and Allie will be able to purchase

c = the number of cars Lamar and Allie wash

Now, since the number of cars they wash determines how much money they will get to buy a new car, then we can say that c is the independent variable while s is the dependent variable as it depends on c to be actualized.

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The coordinates of N are (-38.4, -18.4)

From the question, we have the following parameters that can be used in our computation:

M = (-26, -14)

P = (6, -2).

m : n = 2 : 3 i.e. 2/5

The coordinate is then calculated as

N = 1/(m + n) * (mx2 + nx1, my2 + ny1)

substitute the known values in the above equation, so, we have the following representation

N = 2/5 * (2 * 6 + 3 * -36, 2 * -2 + 3 * -14)

Evaluate

N = (-38.4, -18.4)

Hence, the coordinate is (-38.4, -18.4)

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Complete question

The point N lies on the segment MP.

Find the coordinates of N so that MN is of MP. 2/5

M- (-26, 14) P- (6,-2)

N(?,?)

The solution of the system of equation y - 10 = 2x and 1/2 y = x + 5 is

The simultaneous equation is solved by substitution method as follows

y - 10 = 2x and

1/2 y = x + 5

Isolate y in the first equation to get

y = 2x + 10

substitute y in 1/2 y = x + 5

1/2 (2x + 10) = x + 5

x + 5 = x + 5

x = 0

substitute x = 0 into y = 2x + 10

y = 2(0) + 10

y = 10

hence the solution is (0, 10)

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In order to determine whether a critical point of a loss function is a global minimum, it is necessary to consider the second derivative of the function.

If the second derivative is positive at the critical point, then we can say with certainty that the critical point is a local minimum. However, this does not necessarily mean that it is a function function. This is because there may be other local minima at points which the second derivative is negative, and in this case, the critical point must be compared to these points to determine if it is indeed the global minimum.

In order to assess whether a local minimum is a global minimum, we must first identify any other local minima. This can be done by locating the points at which the first derivative of the function is equal to zero and then evaluating the second derivative of the function at these points. If the second derivative is negative at any of the points, then we have identified a local minimum. Then, we can compare the value of the loss function at the points function as local minima to the value of the loss function at the critical point. If the value of the loss function at the critical point is lower than the value of the loss function at the other local minima, then the critical point is the global minimum. If the values are equal, then the critical point is a global minimum if and only if it is the only local minimum.Overall, identifying whether a critical point of a loss function is a global minimum requires both sufficiency and necessity. It is necessary to evaluate the second derivative of the function at the critical point in order to determine whether it is a local minimum, and it is also necessary to identify any other local minima and compare the value of the loss function at the critical point to the value of the function at the other local minima in order to determine whether the critical point is the global minimum.

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The height of the cylinder whose volume has been given above would be = 50cm

The volume of a cylinder can be calculated with the formula = πr²h

Where Volume = 157cm³

radius = 1 cm

height = X cm

π = 3.14

That is, 157 = 3.14 × 1² × X

make X the subject of formula;

X = 157 /3.14

X = 50cm

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The sketch of the front elevation and the side elevation of the prism are added as an attachment

From the question, we have the following parameters that can be used in our computation:

The prism

Using the figure as a guide, we understand that:

The front elevation is a rectangle of 2m by 0.5m

While the side elevation is a rectangle merged with a trapezoid

Next, we draw the elevations (see attachment)

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Jerome saves 337.5$ on the computer.

Jerome buys the computer for 1912.5$.

The total cost of the computer is 2056$ including sales tax.

The total price of the computer not on sale is 2418.75$.

The discount is 15% of the original price:

0.15 x $2250 = $337.50.

If the sales tax is 7.5%,

The price of the computer after the discount is $2250 - $337.50 = $1912.50.

The amount of tax on the computer is 7.5% of $1912.50:

0.075 x $1912.50 = $143.44.

The total cost for the computer is the discounted price plus the tax: $1912.50 + $143.44 = $2055.94.

The total price for the computer not on sale would be the original price plus the tax:

$2250 + $169.13 = $2419.13 (where tax is 7.5% of $2250).

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Answer:

256 text

Step-by-step explanation:

Let's call the number of text messages Sarah sends in a month as "x".
So, the total cost of the text messages is $0.25 * x.

The total cost of the phone service and text messages is $35 + $0.25 * x = $99.

So, $35 + $0.25 * x = $99.

Subtracting $35 from both sides, we have:$0.25 * x = $99 - $35 = $64

Dividing both sides by $0.25, we have:x = 256

So, Sarah sent 256 text messages in one month.

Answer:

25%

Step-by-step explanation:

Let Dawn’s monthly allowance be 5x. Let Evelyn’s monthly allowance then be 8x.

Percentage increase by 20% is the same as multiplying a number by 1.2

To find the percentage decrease of Evelyn’s monthly allowance, we can equate their allowances after the change of their initial allowance.

1.2 * 5x = k/100 * 8x

k represents the percentage

6x = 8xk/100

Cancel the x’s from both sides

6 = 8k/100

600 = 8k

k = 75

Therefore since 75% of Evelyn’s monthly allowance is equal to Dawn’s increased monthly allowance, this means Evelyn’s monthly allowance was decreased by 25%.

Mei concluded that

We are 90% confident that the true proportion of times the die would land on the number 4 is between 0.398 and 0.562. Since this includes 0.5, the die appears to be fair.

It is based on a statistical analysis of the data collected by Mei.

The proportion of times the die landed on the number 4 is calculated as 48/100 = 0.48.

Using a statistical method called a confidence interval, we can estimate the range of values that the true proportion of times the die would land on the number 4 is likely to fall within, with 90% confidence.

The confidence interval calculated for this data is 0.398 to 0.562.

Since this interval includes the value of 0.5  (which would be the proportion of times a fair die would land on the number 4), By using statistical method we cannot reject the hypothesis that the die is fair.

Hence,

By using statistical method, we can conclude that the die would land on the number 4 is between 0.398 and 0.562 as 0.5 the die appears to be fair.

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Answer:

there is no solution

Step-by-step explanation:

Answer: 10 times

Step-by-step explanation:

The probability that it is likely that a randomly selected cookie from the batch will be a chocolate chip cookie.

Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.

If P(chocolate chip) = 0.50, it means that the probability of randomly selecting a chocolate chip cookie from the batch is 0.50 or 50%.

Interpreting this probability, we can say that it is likely that a randomly selected cookie from the batch will be a chocolate chip cookie since the probability is relatively high.

Therefore, the correct answer would be an option (B) Likely.

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Answer:

(175, 175) -> $3,150

(200, 150) -> $3,300

(225, 125) -> $3,450

Explain: I hope this helps

1. In his newspaper, Peter Zenger published articles criticizing the Governor's use of arbitrary power

2. Because it was against the law to criticize the king or his appointees, the Attorney General accused Peter Zenger of committing" libel.

3. Hamilton believed Zenger was not guilty of this charge because in Zenger's newspaper articles the "truth is told

4. Hamilton felt that more than just Peter Zenger was on trial. He felt that the larger concept of American" liberty was at stake.

Hamilton and Morris agreed that the trial of Peter Zenger was important for American freedom and the defense of liberty.

As for the question about television and newspaper reporters, it is a matter of opinion. Some people believe that the freedom of the press is an important part of democracy, and that reporters should be able to criticize anyone in power, including the president. Others believe that criticism of the president should be limited to protect the dignity and stability of the office. In either case, it is important to strike a balance between free speech and responsible journalism.

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Answer:

C) E=118°, T=118°

Step-by-step explanation:

The angles inside a quadrilateral (shape with four sides) always add to 360°. So this means:

W+E+S+T=360°

29°+E+95°+T=360°

E+T=360°-124°=236°

Note that the shape contains two congruent triangles (they share equal sides) ΔEWS and ΔTWS. This means their angles are the same so E=T

If E=T and E+T=236°, then E=T=236°/2=118°

Answer:

C) E-118°, T=118° is the answer

1. To get System BBB from System AAA, we can divide both sides of the first equation in System AAA by -3:

-3x + 12y = 15

-3x/ -3 + 12y/ -3 = 15/ -3

x + 4y = -5

So System BBB is obtained by dividing both sides of the first equation in System AAA by -3.

2. Are Systems AAA and BBB equivalent?

Yes, Systems AAA and BBB are equivalent. This means that they have the same solution set, despite having different coefficients in their equations. Equivalent systems of linear equations are systems that have the same solution set, regardless of the coefficients of the equations.

Answer:

2x^2 - 12*x/2= Area For Shaded Region

Step-by-step explanation:

This works because you find tha area of both and subtract the shaded area by the unshaded area

Answer: Expression for the area of shades region of the figure = 2[tex]x^{2}[/tex] - 6x

Step-by-step explanation: Area of shaded region = Area of big rectangle - Area of small rectangle

Area of rectangle = length.breadth

Area of big rectangle = 2x.x                                  { . means multiply}

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

Area of small rectangle = 12.(x/2)

                                         =6x

∴ Area of shaded region = 2[tex]x^{2}[/tex] - 6x

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The probability of a player spinning the color green and then rolling an even number is 1/12.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

We have,

Spinner:

= {red, purple, blue, green, white, orange}

Cube:

= {1, 2, 3, 4, 5, 6}

Now,

The sample space of spinning and rolling a cube.

= {red, purple, blue, green, white, orange} x {1, 2, 3, 4, 5, 6}

The number of outcomes.

= 6 x 6

= 36

Now,

The outcome of spinning a green and an even number.

= (green, 2), (green, 4), (green, 6)

Number of outcomes = 3

Now,

The probability of a player spinning the color green and then rolling an even number.

= 3/36

= 1/12

Thus,

The probability of a player spinning the color green and then rolling an even number is 1/12.

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The number of hours taken to have the same number of pages completed is 5 hours.

The solution to the system of equations is (5, 50).

In order to write a system of linear equations that could be used to model the situation and determine the number of hours it would take to complete the workbook, we would assign variables to the number of hours and the number of pages respectively as follows:

Next, we would translate the word problem into system of linear equations as follows:

Isaiah: y = x + 45

Brenna: y = 9x + 5

When the same number of pages are completed, the number of hours taken can be calculated as follows;

x + 45 = 9x + 5

9x - x = 45 - 5

8x = 40

x = 5 hours.

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The expression that shows an equivalent expression include the following:

1/4(14x - 8 + 6x) = 5x - 2.

In Mathematics, an expression is sometimes referred to as an equation and it can be defined as a mathematical equation which is typically used for illustrating the relationship that exist between two (2) or more variables and numerical quantities (number).

Based on the information provided above, we have the following mathematical expression:

1/4(14x - 8 + 6x)

By opening and expanding the bracket, we have the following mathematical expression:

1/4(14x - 8 + 6x) = 1/4(20x - 8)

1/4(20x - 8) = 5x - 2

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The graph of the inequality is added as an attachment

From the question, we have the following parameters that can be used in our computation:

yz|x+2

Express properly

So, we have the following representation

y < x + 2

The above expression is an inequality that implies that

The value of y does not exceed 2 added to x

Next, we plot the graph

See attachment for the graph of the inequality

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Answer:

x = 2 and y = -4

Step-by-step explanation:

To solve using substitution, we define one unknown variable in terms of another and sub this into a second equation with both.

We are told y=2x-8 and -3x+4y=-22, so let's sub '2x-8' in for y in -3x+4y=-22:

-3x+4y=-22

-3x+4(2x-8)=-22

-3x+8x-32=-22

5x=10

x=2

If x=2 and y=2x-8, let's sub 2 in for x to find y:

y=2x-8

y=2(2)-8=4-8=-4