Keith bought a video game for $660. Amy only spent 1/3 of the cost on hers. How much did Amy spend on her video game system?
A)Choose expression you would use to solve:

1/3 (660)

660 - 1/3

660 ÷ 1/3

B) Simplify your expression from part A)
Make sure to show your work!!!!

The graph of an equation is the collection of all of its solution points.

Consider the function y=f(x). All the ordered pair ( a, b) such that b=f(a) is called the graph of the equation.

The solution set consists of all points whose y-coordinate is greater than or equal to 1.

These points are contained in the shaded region in the graph below. This kind of region is called a half-plane because it is one of two parts of the plane into which a boundary line divides it.

Therefore, the set of all solution points of an equation is the graph of the equation.

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Answer:

4= 61+60=121

180-121=59

m<4= 59°

3=180-61= 119

m<3= 119°

2=180-119=61

m<2= 61°

1=61+60=121

180-121= 59

m<1= 59°

hey, I hope this was helpful:)

The area in square meters will the oil slick cover is 9.5×10⁶ m².

15 barrels of diesel spilt into the ocean, where each barrel contains 42 gallons. Thereby the total volume of the oil spilt by 15 barrels is calculated as follows:

The total volume of the oil spilt by 15 barrels = 15× 42 gallons.

=630 gallons

1 gallon = 3.78541 liters

Volume in L = 630 gallons × 3.78541 liters/ 1 gallon

= 2384.8083 L

1 L = 10⁻³ m³

2384.8083  L = 2384.8083 × 10⁻³ m³

= 2.3848083 m³

The area covered by the oil spill has to be determined, where the thickness of the oil spill is given to be 2.5×10² nm.

1 nm = 10⁻⁹ m

Thereby, 2.5×10² nm = 2.5×10²×10⁻⁹ m

= 2.5×10⁻⁷ m

Area (m²) = volume (m³)/thickness (m)

= 2.3848083 m³/ 2.5×10⁻⁷ m

= 0.95392×10⁷ m²

= 9.5×10⁶ m²

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x=2/3

6(2/3) + 4 9/10 =4 + 4 9/10 = 8 9/10

Answer:

2x-1=y,2y+3=x

Step-by-step explanation:

no explanation

a. To find the direction of the vector p1p2⇀, we subtract the coordinates of p1 from the coordinates of p2: (x2 - x1, y2 - y1, z2 - z1).

For the given points:

1. p1(-1, 1, 5), p2(2, 5, 0): The direction of p1p2⇀ is (2 - (-1), 5 - 1, 0 - 5) = (3, 4, -5).

2. p1(1, 4, 5), p2(4, -2, 7): The direction of p1p2⇀ is (4 - 1, -2 - 4, 7 - 5) = (3, -6, 2).

3. p1(3, 4, 5), p2(2, 3, 4): The direction of p1p2⇀ is (2 - 3, 3 - 4, 4 - 5) = (-1, -1, -1).

4. p1(0, 0, 0), p2(2, -2, -2): The direction of p1p2⇀ is (2 - 0, -2 - 0, -2 - 0) = (2, -2, -2).

b. To find the midpoint of the line segment p1p2⇀, we take the average of the coordinates of p1 and p2: ((x1 + x2)/2, (y1 + y2)/2, (z1 + z2)/2).

For the given points:

1. p1(-1, 1, 5), p2(2, 5, 0): The midpoint of p1p2⇀ is ((-1 + 2)/2, (1 + 5)/2, (5 + 0)/2) = (0.5, 3, 2.5).

2. p1(1, 4, 5), p2(4, -2, 7): The midpoint of p1p2⇀ is ((1 + 4)/2, (4 + (-2))/2, (5 + 7)/2) = (2.5, 1, 6).

3. p1(3, 4, 5), p2(2, 3, 4): The midpoint of p1p2⇀ is ((3 + 2)/2, (4 + 3)/2, (5 + 4)/2) = (2.5, 3.5, 4.5).

4. p1(0, 0, 0), p2(2, -2, -2): The midpoint of p1p2⇀ is ((0 + 2)/2, (0 + (-2))/2, (0 + (-2))/2) = (1, -1, -1).

a. To find the direction of a vector, we subtract the coordinates of its initial point from the coordinates of its terminal point. This gives us a vector that represents the change in position from the initial point to the terminal point. In this case, we subtract the coordinates of p1 from the coordinates of p2. The resulting vector represents the direction of movement from p1 to p2.

b. To find the midpoint of a line segment, we take the average of the coordinates of its

two endpoints. This gives us a point that lies exactly halfway between the two endpoints. In this case, we add the coordinates of p1 and p2 and divide each sum by 2 to find the average. The resulting point represents the midpoint of the line segment p1p2⇀.

By finding the direction and midpoint of a line segment, we can gain insight into its geometric properties. The direction vector provides information about the orientation and magnitude of the line segment, while the midpoint gives us a central reference point. These calculations are fundamental in geometry and can be applied in various contexts, such as determining the slope of a line or finding the center of a line segment.

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The order (p) of an autoregressive (AR) process can be determined by Durbin-Watson Statistic, Box-Pierce Chi-square Statistic, Autocorrelation Function (ACF), and Partial Autocorrelation Function (PACF) coefficients., option E is correct.

The Durbin-Watson statistic is used to test for the presence of autocorrelation in the residuals of a time series model.

It can provide an indication of the order of the AR process if it shows significant autocorrelation at certain lags.

The Box-Pierce test is a statistical test used to assess the goodness-of-fit of a time series model.

It examines the residuals for autocorrelation at different lags and can help determine the appropriate order of the AR process.

Autocorrelation Function (ACF): The ACF is a plot of the correlation between a time series and its lagged values. By analyzing the ACF plot, one can observe the significant autocorrelation at certain lags, which can suggest the order of the AR process.

The PACF measures the direct relationship between a time series and its lagged values after removing the effects of intermediate lags.

Significant coefficients in the PACF plot at certain lags can indicate the appropriate order of the AR process.

By considering all of these methods together and analyzing their results, one can make a more informed decision about the order (p) of an autoregressive (AR) process.

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The order (p) of a autogressiove(AR) process best be determined by the :

A. Durbin-Watson Statistic

B. Box Piece Chi-square statistic

C. Autocorrelation function

D. Partial autocorrelation fuction coeficcents to be significant at lagged p

E. all of the above

Answer:

x=5 y=-5

Step-by-step explanation:

Answer:

15x + 20y

Step-by-step explanation:

First, we need to combine like terms,

10x + 20y + 5x

15x + 20y

Since x and y are different variables, we cannot combine them, meaning that the answer is,

15x + 20y

Answer:

E. 6.28 x 10^-6

Step-by-step explanation:

The option that cannot have a Poisson distribution is The length of a movie. Thus, the correct answer is A.

The Poisson distribution is a discrete probability distribution that is used to describe the probability of a given number of events occurring in a fixed period of time or space if these events occur with a known constant rate and independently of the time since the last event.

In the case of the length of a movie, it is not a discrete event that can be counted, but rather a continuous measurement, so it cannot be described using the Poisson distribution.

Options b, c, and d are all discrete events that can be counted and therefore can be described using the Poisson distribution.

Thus, the correct answer is A. the length of a movie

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a) The rate of change of the drug's concentration at 50 minutes is 1.7 mg/min.

b) The rate of change of the drug's concentration at 85 minutes is 0.2 mg/min.

c) The drug's concentration is decreasing at 115 minutes.

a) The central difference approach can be used to calculate the rate of medication change after 50 minutes.

f'(x) = (f(x+h) - f(x-h))/2 × h    ....(1)

As per the question, we have h = 10 and x = 50

Substitute the values of h = 10 and x = 50 in (1),

f'(40) = (f(50+10) - f(50-10))/2 × 10

f'(40) = (89-55)/20

f'(40) = 1.7 mg/min

b) For the rate of change of concentration at 85 minutes:

Here, f(80) = 111 mg and f(90) = 113.

The concentration at 90 minutes is 113 mg.

Rate of change = (f(90) - f(80)) / h

= (113 - 111) /10

= 2 / 10

= 0.2 mg/min

c) Since the concentration at 120 minutes (68 mg) is lower than the concentration at 110 minutes (103 mg), the drug's concentration is decreasing.

Therefore, the drug's concentration is decreasing at 115 minutes.

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Answer:

x = 3/2

Step-by-step explanation:

9^x = 27 base equation

9^x = 3^3 convert 27 to exponential

3^(2x) = 3^3 convert 9^x to the same base number

2x = 3 drop the bases and compare exponents

x= 3/2 answer

a) When Lily's age is 20, and Raphael's age is divided by 3 then the expression of Lily's age in terms of h is h < 10.

b) Ethan's age is half of Raphael's age therefore, Ethan's age is half Raphael's age.

a) If Raphael is twice as old as his sister Lily, we can represent their ages as 2h and h, respectively, where h is Lily's age. The sum of their ages is less than 30, so we can write the equation:

2h + h < 30

Combining like terms, we get:

3h < 30

Dividing both sides by 3, we get:

h < 10

This is an expression of Lily's age in terms of h.

b) If Ethan's age is 16, and Raphael's age is twice Ethan's age, we can represent Raphael's age as 2 × 16 = 32.

Ethan's age is 16, which is half of Raphael's age of 32. Therefore, Ethan's age is half of Raphael's age.

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The question is -

Raphael is twice as old as his sister. The sum of their ages is less than 30.

a) Lily's age is 20, and Raphael's age is divided by 3. Write an expression in terms of h for Lily's age.

b) An expression for Ethan's age 16. Write a sentence to describe how Ethan's age compares with Raphael's age.

Answer:

\(y=-\frac{3}{2}x+12\)

Step-by-step explanation:

Hi there!

We want to write the equation of a line parallel to y=\(-\frac{3}{2}x-1\) and that passes through the point (4,6)

Parallel lines have the same slopes, but different y intercepts.

The slope of the equation \(y=-\frac{3}{2}x-1\) is \(-\frac{3}{2}\), since the equation is written in y=mx+b format (m is slope and b is y intercept), and \(-\frac{3}{2}\) is in the place where m is.

It's also the slope of the line parallel to it.

So we know the slope of the new line, let's write it down:

y=\(-\frac{3}{2}x\)+b

Let's find b, in order to complete the equation

Since the equation passes through the point (4, 6), we can use it to solve for b.

Substitute 4 as x and 6 as y into the equation:

6=\(-\frac{3}{2}\)(4)+b

Multiply

6=-6+b

Add 6 to both sides

12=b

Substitute 12 as b in the equation.

y=\(-\frac{3}{2}x+12\)

Hope this helps!

Answer:

-12w^8

Step-by-step explanation:

Hope it helps!

Answer:

-19-3x= -1(x+4).

-19-3x= -5(x+4).

-19-3x= -5x-1.

-19+1= -5x+3x.

-18= -2x.

x=9.

a) There are 100 packages with a mass greater than 5.6 kg and 98 packages with a mass less than 5.6 kg.

b) There is 49% of the packages have a mass of less than 5.6 kg.

a) Since two packages have a mass of 5.6 kg and the median mass is also 5.6 kg, there are 100 packages with a mass greater than 5.6 kg and 98 packages with a mass less than 5.6 kg.

b) The percentage of packages with a mass less than 5.6 kg can be calculated as follows:

Percentage = (Number of packages with mass less than 5.6 kg / Total number of packages) x 100%

Percentage = (98 / 200) x 100%

Percentage = 49%

Therefore, 49% of the packages have a mass of less than 5.6 kg.

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Answer:

Let, Nikki's age is 'n'.

Since, Jamie is 5 years younger than Nikki, let Jamie's age be 'n-5'

According to the question,

The product of their age is 126.

which means,

Nikki's Age × Jamie's age = 126

⇒ n × (n-5) = 126

⇒ n² - 5n = 126

⇒ n² - 5n - 126 = 0

Now you can do the middleterm,

⇒n² - 14n + 9n - 126 =0

⇒ n ( n - 14 ) + 9 (n - 14 ) = 0

⇒ ( n - 14 ) ( n + 9 ) = 0

since n's value can not negative

⇒ ( n - 14 ) = 0

∴ n = 14

Nikki's age is 14

and Jamie's age is 9 years

The equation find Nikki's age is n² - 5n = 126

From the given statement we can deduce the following and form equation to find Nikki's age.

Let the age of Nikki = n

Let the age of Jamie = y

From the first statement:

                                                                 n - 5 = y

From the second statement:

                                                      n(n - 5) = 126

Simplify the equation as follows;

n(n - 5) = 126

n² - 5n = 126

Thus, the equation find Nikki's age is n² - 5n = 126

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Answer:

20%

Step-by-step explanation:

50+30=80

100-80=20

so you would pay 20%

There are 56 different ways to choose 5 books from this collection.

In this case, we have 8 subjects from which we need to choose 5 books. Since there are at least 5 copies of each book, we can assume that we have enough copies of each subject to choose from. The formula for combinations is nCr = n! / (r!(n-r)!), where n represents the total number of subjects and r represents the number of books to be chosen.  

In our case, n = 8 and r = 5.

Plugging these values into the formula, we get 8! / (5!(8-5)!) = 8! / (5!3!).

Simplifying further, we get (8 * 7 * 6) / (3 * 2 * 1) = 56.

Therefore, there are 56 different ways to choose 5 books from this collection.

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Answers:

===========================================================

Explanation:

I recommend drawing the two triangles as shown below. The diagram isn't to scale, but all that matters is that we get the general idea down.

Your teacher gave you this info:

These two pieces of info are enough to prove that triangle ABC is similar to triangle EDF. Use the angle angle (AA) similarity theorem to do this proof. The order of the lettering matters because it helps us see how the letters pair up.

Since the triangles are similar, the scale factor to go from ABC to EDF is EF/AC = 2/6 = 1/3

In other words, the side lengths of triangle EDF are exactly 1/3 that of the corresponding lengths of ABC. Or we can reverse things to say the sides of ABC are 3 times longer than the sides of EDF.

----------------------

Use this scale factor to help determine the missing length ED.

(ED)/(AB) = scale factor

(ED)/(AB) = 1/3

(ED)/(3.3) = 1/3

ED = (1/3)*(3.3)

ED = 1.1

Note how ED/AB = (1.1)/(3.3) = 11/33 = 1/3

----------------------

While we don't know how long sides BC or DF are, we are told that DF is 3.2 units shorter compared to BC.

This means

DF = BC - 3.2

DF = x - 3.2

Then we can say,

(DF)/(BC) = scale factor

(x-3.2)/(x) = 1/3

3(x - 3.2) = x*1

3x - 9.6 = x

3x - x = 9.6

2x = 9.6

x = (9.6)/2

x = 4.8

So BC is x = 4.8 units long and DF is x-3.2 = 4.8-3.2 = 1.6 units long

Yes let's find

The fraction is

\(\\ \rm\Rrightarrow 13/2/3\)

\(\\ \rm\Rrightarrow 13(3)/2\)

\(\\ \rm\Rrightarrow 39/2\)

Answer:

39/2 of the class are boys that wear glasses

Step-by-step explanation:

\(\dfrac23 \textsf{ of the class are boys.}\)

\(\textsf{If 13 of them wear glasses, then} \dfrac{13}{\frac23}} \textsf{ wear glasses.}\)

\(13 \div \dfrac23 =13 \times \dfrac32=\dfrac{39}{2}\)

Decision Support Systems (DSS) draw information from a variety of sources, including internal data generated within the organization and external data obtained from outside sources. Internal data encompasses data such as sales figures, financial statements, and customer records, providing an organization-specific view. External data includes market research reports, industry benchmarks, and government data, offering a broader context and insights into market trends and customer preferences. DSS can also utilize external databases and sources, such as data aggregators and public repositories, to access specialized data sets. By combining internal and external data sources, DSS can provide comprehensive decision support, enabling organizations to make informed choices based on a wide range of information.

Decision Support Systems (DSS) rely on a wide range of data sources to provide valuable information for decision-making processes. These sources can be categorized into internal and external data, each offering unique perspectives and insights.

Internal data refers to information generated and stored within an organization. This data can include sales figures, financial statements, customer records, inventory levels, and employee performance data. Internal data provides an organization-specific view and can be readily accessible for analysis within the DSS.

External data, on the other hand, encompasses information obtained from sources outside the organization. It can include market research reports, industry benchmarks, economic indicators, government data, social media feeds, and customer feedback. External data offers a broader context and helps organizations gain insights into market trends, competitor analysis, customer preferences, and regulatory changes.

Furthermore, DSS can also tap into various external databases, such as data aggregators, research institutions, and public repositories. These sources provide specialized data sets related to specific industries, demographics, geographies, or subjects of interest. By integrating these external sources, DSS can enhance its analytical capabilities and provide comprehensive decision support.

In conclusion, the information used in a Decision Support System can be obtained from both internal and external sources. By leveraging internal data and tapping into external databases and sources, DSS can provide a holistic and informed perspective for decision-making processes.

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Answer:

D

Step-by-step explanation:

D is more appropriate for distance formula because you are looking for the whole length between two points rather than the point in between the the two points such as in the other answers.

Let length, l=8 mm.

Braedth, b=2 mm.

The perimeter of the rectangle is,

Therefore, the perimeter of the rectangle is 20 mm^2.

Answer:

25 Tickets

Step-by-step explanation:

120+30=150

150/6=25

Answer:

True

Step-by-step explanation:

A cylinder has two circles as its bases, and the diameter formula is:

2r = d

So if you plug in:

2r = 18

---    ---

2     2

r = 9

So it will be true.

Hope this helped.

Answer:

A not enough

Step-by-step explanation:

The player has a total of 18 goals scored and 6 assists made.

Equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the number of goals scored and y represent the number of assists. Since the combined goals and assist is 24, hence:

x + y = 24     (1)

Also:

2x + y = 42    (2)

From equation 1 and 2:

x = 18, y = 6

The player has a total of 18 goals scored and 6 assists made.

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