1. Leslie visits a local department store in order to purchase summer clothes. The

price of the dress is $40. The dress is marked up 25%. What is the selling price of

the dress?

The correct option is the standard deviations of the variables.

What is correlation?

Any statistical relationship between two random variables or bivariate data, whether causal or not, is referred to in statistics as correlation or dependence.

Correlation is a term used to describe the linear relationship between two entities. When using a correlation tool, the variables must be present in quantities of two or more to test their relationship (degree of association).

In order to scale the measurement between two variables connected to a similar sample, the standard deviation measures dispersion.

The variables' standard deviations are the best choice as a result.

Option involving the standard errors of the variables is incorrect because standard error, which stands for standard deviation, determines the relationship between dependent and independent variables.

Option involving the coefficients of variation of two variables is incorrect because the coefficient expressing standard deviation and mean ratio determines how much variation there is.

Option The means of the variables are incorrect because they are not a scale for determining the correlation between two variables.

Hence, the correct option is the standard deviations of the variables.

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Complete question:

The correlation between two variables related to the same sample is a scaled quantitative measure. What is used to scale this measurement?

- the standard deviations of the variables

- the standard errors of the variables

- the coefficients of variation of the two variables

- the means of the variables

Answer:

Step-by-step explanation:

4x+y=-18

4x+8y=-32

Subtracting the equations we get

-7y = 14

y=-2

4x+(-2)=-18

4x = -18+2

4x=-16

x=-4

The function is an exponential growth since it is increasing with time and k is positive

Given that at t =6, P = 167075

Then;

167075 =110.8e^6k

167075/110.8 = e^6k

1507.9 = e^6k

ln(1507.9) = 6k

k = ln(1507.9)/6

k = 1.2

Thus in the year 2020;

P = 110.8e^20(1.2)

P = 2.9 * 10^12

In the year 2025;

P = 110.8e^25(1.2)

P = 1.18 * 10^15

To reach 290,000

290,000 = 110.8e^1.2t

290000/110.8 = e^1.2t

2617.3 = e^1.2t

t = ln(2617.3 )/1.2

t = 7 years

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Answer:

S=2t

or

T=1/2 S

The area of each k-th rectangle is

Thus, after summing the areas of the n rectangles, we obtain:

Then, to find the area under the curve we need to take the limit as n approaches infinity. So, we obtain:

Therefore, option A is correct.

Answer:

The answer is A in the picture above

Step-by-step explanation:

I took the test with 100 percent, im confident in my answer.

have a great day

We can see that the first component of the vector equation is always zero, so the parabola lies in the xz-plane.

Moreover, the second component is a quadratic function of t, which gives us a vertical parabola when plotted in the yz-plane. The third component is a linear function of t, so the curve extends infinitely in both directions. Therefore, we have a vertical parabola in the xz-plane.

This statement is referring to a specific vector-valued function, which we can write as:

f(t) = (0, t^2, ct)

where c is a constant.

The second component of this vector function is t^2, which is a quadratic function of t. When we plot this function in the yz-plane (i.e., we plot y = t^2 and z = 0), we get a vertical parabola that opens upward. This is because as t increases, the value of t^2 increases more and more quickly, causing the curve to curve upward.

The third component of the vector function is ct, which is a linear function of t. When we plot this function in the xz-plane (i.e., we plot x = 0 and z = ct), we get a straight line that extends infinitely in both directions. This is because as t increases or decreases, the value of ct increases or decreases proportionally, causing the line to extend infinitely in both directions.

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Answer:

2600 meters

Step-by-step explanation:

2.6x1000

Answer:

The number of tickets is increasing by 97% each year

Step-by-step explanation:

Based on the given statement, the correct answer would be:

option A. The statement makes sense. Sally listens to music when she is depressed. If she is listening to music, then Sally must be depressed.

The given statement is discussing a potential relationship between Sally's emotional state of being depressed and her behavior of listening to music. The question asks whether the statement makes sense, is clearly true, or does not make sense, and provides four options to choose from.

Option A states that the statement makes sense and suggests that if Sally is listening to music, then she must be depressed. This option is reasonable because the statement establishes a connection between Sally's depression and her behavior of listening to music. It implies that listening to music is a coping mechanism or an activity she engages in when she experiences depressive feelings.

Therefore, if someone observes Sally listening to music, it can be inferred that she might be in a depressed state at that moment.

On the other hand, options B and C can be eliminated because they make extreme and unsupported claims. Option B suggests that Sally only listens to music when she is depressed, which is not explicitly stated in the given statement. Option C states that if Sally is listening to music, then she must not be depressed, which contradicts the initial connection established between depression and listening to music in the statement.

Option D highlights the incomplete nature of the statement but does not render it entirely senseless. It acknowledges that the statement mentions Sally's behavior of listening to music when she is depressed but does not provide information about other potential reasons she might listen to music.

In summary, option A is the most appropriate choice as it aligns with the established correlation between Sally's depression and her listening to music, while considering the possibility of other reasons for her music listening behavior.

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When point P is on line segment OQ, and the length of OQ = 2x, OP = x and PQ = 10 then the length of the line OQ is 20 units

Point P is on line segment OQ

The length of the line OQ = The length of the line PO + The length of the line PQ

The length of the line OQ = 2x

The length of the line OP = x

The length of the line PQ = 10

Substitute the values in the equation

2x = x+10

2x - x = 10

x = 10

Then the length of OQ is

2x = 2×10

= 20 units

Hence, when point P is on line segment OQ, and the length of OQ = 2x, OP = x and PQ = 10 then the length of the line OQ is 20 units

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Answer:

The major key with 2 flats is :

B♭ major

Answer:

The key of B♭ major has two flats

Step-by-step explanation:

An accidental sign consisting of two flat symbols ♭that lower a note by two half steps two semitones. The double flat symbol alters the pitch of the note to which it is attached as well as any subsequent occurrence of the same note identical line or space in the same measure.

Hope this helps

~Heaven~

Answer:

y = -5

o = 35 degrees

Step-by-step explanation:

If you replace y with -5, the statement  7y = 4y - 15 is correct. You get -35 =  -35. Hope this helped!

Step-by-step explanation:

a. (3 - 2/3) ÷ (4/3 x 7)

= [(3 x 3) / (1 x 3) - 2/3] ÷ 28/3

= (9/3 - 2/3) ÷ 28/3

= 7/3 x 3/28

= 21/84

= (21 x 1) / (21 x 4)

= 1/4

b. 2/3 ÷ 5/6 - 2/5

= 2/3 x 6/5 - 2/5

= 12/15 - 2/5

= (3 x 4) / (3 x 5) - 2/5

= 4/5 - 2/5

= 2/5

c. (- 3/4 + 1/2) ÷ (2/5 - 5/2)

= [- 3/4 + (1 x 12) / (2 x 2)] ÷ [(2 x 2) / (5 x 2) - (5 x 5) / (2 x 5)]

= (- 3/4 + 12/4) ÷ (4/10 - 25/10)

= 9/4 ÷ (- 21/10)

= 9/4 x - 10/21

= - 90/84

= (6 x - 15) / (6 x 14)

= - 15/14.

If you have any doubt, then you can ask me in the comments.

Answer:

8.9k

Step-by-step explanation:

We just have to add together the length of the three sides to find the perimeter of the triangle.

(1.8k-5)+(3.5+6.1k)+(k+1.5) = 1.8k-5+3.5+6.1k+k+1.5

Combine like terms.

1.8k-5+3.5+6.1k+k+1.5 = 8.9k + 0

                                    = 8.9k

Let A(2,0),B(0,92)

Let A(2,0),B(0,92)and let mid-point be C(1,3p)

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line5x+3y+2=0

Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line5x+3y+2=0⇒5(−1)+3(1)+2=0

Answer:

The probability is 1/8 that you'll pick 2 yellow balls.

Step-by-step explanation:

P(Both balls not pink) = P(Both balls yellow) = 6/16 * 5/15 = 1/8

Answer:

volume= 1000

total surface area= 600

Hope this helps,

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Thank you

Answer:

600 cm² and 1000 cm³

Step-by-step explanation:

The surface area is the area of the 6 square faces of the cube,

area of 1 face = 10 × 10 = 100 cm², then

surface area = 6 × 100 cm² = 600 cm²

The volume (V) is calculated as

V = s³ ( s is the side length )

Here s = 10, then

V = 10³ = 1000 cm³

Perimeter = 2 x length + 2 x width

perimeter = 2x18 + 2x12 = 36 + 24 = 60 inches

Answer: 60 inches

a) The mode of the list is 7

b) The median of the list is 7.

c) The mean is 5.4

d) The range is 7

What is the Mean, Mode and Median?

Mean: The mean is the average of a set of numbers, calculated by adding up all the numbers and dividing by the total number of numbers in the set.

Mode: The mode is the most frequently occurring number in a set of numbers.

Median: The median is the middle value in a set of numbers when the set is sorted in ascending or descending order.

a) Mode: The mode of the list is 7, as it is the number that occurs most frequently (3 times).

b) Median: To find the median, the list must first be sorted in ascending order:

1, 2, 3, 4, 5, 7, 7, 7, 8, 8

The median of the list is 7.

c) Mean: The mean is found by adding up all the numbers in the list and dividing by the total number of items:

(3 + 7 + 2 + 4 + 7 + 5 + 7 + 1 + 8 + 8)/10 = 54/10 = 5.4

d) Range: The range is the difference between the largest and smallest numbers in the list:

8 - 1 = 7

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1. Variable manufacturing overhead rate variance

The formula Actual Hours × (Actual Rate - Standard Rate) is used to calculate the variable manufacturing overhead rate variance. This variance measures the difference between the actual variable manufacturing overhead cost incurred and the standard variable manufacturing overhead cost that should have been incurred, based on the standard rate per hour.

Variable manufacturing overhead rate variance = Actual Hours × (Actual Rate - Standard Rate)

The variable manufacturing overhead rate variance provides insight into how efficiently a company is utilizing its variable manufacturing overhead resources in terms of the rate per hour. A positive variance indicates that the actual rate paid per hour for variable manufacturing overhead was higher than the standard rate, resulting in higher costs. On the other hand, a negative variance suggests that the actual rate paid per hour was lower than the standard rate, leading to cost savings.

By analyzing this variance, management can identify areas where the company may be overspending or underspending on variable manufacturing overhead and take corrective actions accordingly, such as renegotiating supplier contracts or optimizing resource allocation.

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The general solution of the given differential equation is the sum of the complementary solution and the particular solution:

y(t) = y_c(t) + y_p(t)

y(t) = c1 × e⁻ᵗ × cos(2t) + c2 × e⁻ᵗ × sin(2t) + (²/₂₁) × sin(2t) + (⁴/₂₁) × cos(2t)

where c1 and c2 are arbitrary constants.

To find the general solution of the given differential equation, follow these steps:

Step 1: Find the complementary solution:

Consider the homogeneous equation:

y'' + 2y' + 5y = 0

The characteristic equation corresponding to this homogeneous equation is:

r² + 2r + 5 = 0

Solving this quadratic equation, find two complex conjugate roots:

r = -1 + 2i and -1 - 2i

Therefore, the complementary solution is:

y_c(t) = c1 × e⁻ᵗ × cos(2t) + c2 × e⁻ᵗ × sin(2t)

where c1 and c2 are arbitrary constants.

Step 2: Find a particular solution:

We are looking for a particular solution of the form:

y_p(t) = A × sin(2t) + B × cos(2t)

Differentiating y_p(t):

y'_p(t) = 2A × cos(2t) - 2B × sin(2t)

y''_p(t) = -4A × sin(2t) - 4B × cos(2t)

Substituting these derivatives into the differential equation:

(-4A × sin(2t) - 4B × cos(2t)) + 2(2A × cos(2t) - 2B × sin(2t)) + 5(A × sin(2t) + B × cos(2t)) = 2 × sin(2t)

Simplifying the equation:

(-4A + 4B + 5A) × sin(2t) + (-4B - 4A + 5B) × cos(2t) = 2 × sin(2t)

To satisfy this equation, we equate the coefficients of sin(2t) and cos(2t) separately:

-4A + 4B + 5A = 2 (coefficient of sin(2t))

-4B - 4A + 5B = 0 (coefficient of cos(2t))

Solving these simultaneous equations, we find:

A = ²/₂₁

B = ₄/₂₁

Therefore, the particular solution is:

y_p(t) = (²/₂₁) × sin(2t) + (⁴/₂₁) × cos(2t)

Step 3: General solution:

The general solution of the given differential equation is the sum of the complementary solution and the particular solution:

y(t) = y_c(t) + y_p(t)

y(t) = c1 × e⁻ᵗ × cos(2t) + c2 × e⁻ᵗ × sin(2t) + (²/₂₁) × sin(2t) + (⁴/₂₁) × cos(2t)

where c1 and c2 are arbitrary constants.

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Answer:

\(f'(x)= \frac{13}{(2x+3)^2}\\\)

Step-by-step explanation:

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

\(f'(x)=\frac{dy}{dx} = \frac{d}{dx}(\frac{3x-2}{2x+3})\\ f'(x)= \frac{(2x+3)\frac{d}{dx}(3x-2)-(3x-2)\frac{d}{dx}(2x+3) }{(2x+3)^{2} } \\f'(x)= \frac{(2x+3)(3)-(3x-2)(2)}{(2x+3)^{2} } \\\)

\(f'(x)= \frac{6x+9-6x+4}{(2x+3)^{2} }\\ f'(x)= \frac{13}{(2x+3)^2}\\\)

Answer:

c

Step-by-step explanation:

x=1 g(x)=-10

x=2 g(x)=-12

x=3 g(x)=-14

f(x)=x+4

=＞ g(x)=-2·(x+4)

Answer:

The probability that Matt is late for work is 0.2

The answer is this option because time is measured in hours not in decimal points.

Answer:

The probability of winning a game is 110%.

Step-by-step explanation:

The highest probability is 100%.

I hope it helps!

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Answer:

Step-by-step explanation:

Equation below as the sum, solve for x:

Number of each bill and coin:

the city grew by approximately 3 percent from 2010 to 2020.

To find out the percent growth from 2010 to 2020, we need to calculate the net percent change over the entire time period. We can start by finding out the population of the city in 2015.

From 2010 to 2015, the population grew by 6.6%. Using this percentage increase, we can find the population in 2015 by multiplying the 2010 population by 1.066:

179,000 x 1.066 = 190,294

Therefore, the population in 2015 was approximately 190,294.

From 2015 to 2020, the population fell by 3.4%. Using this percentage decrease, we can find the population in 2020 by multiplying the 2015 population by 0.966:

190,294 x 0.966 = 183,902

Therefore, the population in 2020 was approximately 183,902.

To find the net percent change from 2010 to 2020, we can use the formula:

[(final value - initial value) / initial value] x 100

Plugging in the numbers we found, we get:

[(183,902 - 179,000) / 179,000] x 100 = 2.7%

Therefore, to the nearest whole number, the city grew by approximately 3% from 2010 to 2020.

The city experienced a period of growth from 2010 to 2015, followed by a period of decline from 2015 to 2020. However, overall, the city still managed to grow by approximately 3% over the entire time period.


1. Calculate the population in 2015 by applying the 6.6% growth:
2015 Population = 179,000 * (1 + 6.6/100) = 179,000 * 1.066 ≈ 190,814

2. Calculate the population in 2020 by applying the 3.4% decline:
2020 Population = 190,814 * (1 - 3.4/100) = 190,814 * 0.966 ≈ 184,302

3. Calculate the overall percentage growth from 2010 to 2020:
Percentage Growth = ((2020 Population - 2010 Population) / 2010 Population) * 100
Percentage Growth = ((184,302 - 179,000) / 179,000) * 100 ≈ 2.96%


Considering the population growth and decline in the respective periods, the city's population grew by approximately 3% from 2010 to 2020, to the nearest whole number.

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