please help! and explain the answer please

Answer:

The vertex is option C: (-6, -2)

Step-by-step explanation:

The equation for a parabola is y = a(x – h)² + k where h and k are the y and x coordinates of the vertex, respectively. Thus, the vertex is (-6,2)

Pls mark brainliest.

Answer:

3/17=.18

Step-by-step explanation:

There is a .18 or 3/17 chance that a car leaving will be black.

Step-by-step explanation:

Area: bh

The shape is a square in which the side lengths are the same, so we multiply the number squared.

A = 6.25(6.25)

A = 39.06

Volume: lwh

6.25^3 = V

V = 244.14

Hope this helps:)

Step-by-step explanation:

Area: bh

The shape is a square in which the side lengths are the same, so we multiply the number squared.

A = 6.25(6.25)

A = 39.06

Volume: lwh

6.25^3 = V

V = 244.14

I hope I contributed

the value for dferror for this analysis is 8.

What is error?

Error is the difference between an actual value and an estimate, or approximate, representation of that value in applied mathematics. The discrepancy between the population's average and the average of a sample taken from that population is a frequent example in statistics. The discrepancy between an irrational number's true value and the values of rational expressions like 22/7, 355/113, 3.14, or 3.14159 serves as an example of round-off error in numerical analysis. A truncation error happens when an infinite series is ignored for all but a small number of terms. For instance, the sum of the infinite series can be used to express the exponential function ex.

df-error = (df-within treatment) - (df-subjects)

df-subjects = n - 1 = 5 - 1 = 4 {n is the no of subjects}

df-within treatment = 12

df-error = 12 - 4 = 8

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The two snowmen took a combined six hours to construct, compared to the four hours it took to construct the first.

An equation is a mathematical formula that connects two assertions using the equal sign (=) to denote equivalence. For instance, an equal sign separates the components 3x + 5 and 14 in the equation 3x + 5 = 14. A mathematical formula is used to express the connection between two phrases on either side of a letter. Frequently, there is just one variable, which is also the symbol. for example, 2x - 4 = 2.

given

1st snowman took time t = 4 hours

2nd snowman take half of the first t / 2 = 2 hours

so total time

= t + t/2

= 4 + 2

= 6 hours

The two snowmen took a combined six hours to construct, compared to the four hours it took to construct the first.

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Answer: 1/5

Step-by-step explanation:

The probability that a trip will be to either Nassau or Paris is 0.2 or 20%.

Given, a travel agency is giving away a free trip as part of a grand opening.

The trip will be to one of the ten locations listed. The 10 locations are London, Paris, Rome, Sydney, Athens, Nassau, Hong Kong, Madrid, Tokyo, and Rio De Janeiro.

To find the probability, we need to find how many outcomes are favorable to the event "the trip is to Nassau or Paris" and divide by the total number of possible outcomes.

So, favorable outcomes = 2 (Nassau, Paris)

Total possible outcomes = 10

Probability = (Favorable outcomes)/(Total possible outcomes)= 2/10= 0.2 or 20%.

Therefore, the probability that a trip will be to either Nassau or Paris is 0.2 or 20%.

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To calculate the double surface integral ∬s f(x, y, z) ds, we need to parameterize the surface s and then evaluate the integral.

The given surface is defined by the equation x^2 + y^2 = 9 and 0 ≤ z ≤ 1.

Let's parameterize the surface s using cylindrical coordinates:

x = r cosθ

y = r sinθ

z = z

The surface s can be described by the parameterization:

r(θ) = (3, θ, z)

Now, we can calculate the surface area element ds:

ds = |∂r/∂θ × ∂r/∂z| dθ dz

∂r/∂θ = (-3 sinθ, 3 cosθ, 0)

∂r/∂z = (0, 0, 1)

∂r/∂θ × ∂r/∂z = (3 cosθ, 3 sinθ, 0)

|∂r/∂θ × ∂r/∂z| = |(3 cosθ, 3 sinθ, 0)| = 3

Therefore, ds = 3 dθ dz.

Now, let's evaluate the double surface integral:

∬s f(x, y, z) ds = ∫∫s f(x, y, z) ds

∬s f(x, y, z) ds = ∫∫s e^(-z) ds

∬s f(x, y, z) ds = ∫∫s e^(-z) (3 dθ dz)

The limits of integration for θ are from 0 to 2π, and for z, it is from 0 to 1.

∬s f(x, y, z) ds = ∫₀¹ ∫₀²π e^(-z) (3 dθ dz)

∬s f(x, y, z) ds = 3 ∫₀¹ ∫₀²π e^(-z) dθ dz

Evaluating the integral with respect to θ:

∬s f(x, y, z) ds = 3 ∫₀¹ [e^(-z) θ]₀²π dz

∬s f(x, y, z) ds = 3 [e^(-z) θ]₀²π

= 3 (e^(-z) 2π - e^(-z) 0)

= 6π (e^(-z) - 1)

Substituting the limits of integration for z:

∬s f(x, y, z) ds = 6π (e^(-1) - 1)

Therefore, the value of ∬s f(x, y, z) ds is 6π (e^(-1) - 1).

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Covariance is a statistical measure that assesses how two variables deviate from their mean or average together. It's a way to measure whether the two variables are linked. Covariance can be positive or negative. A positive covariance means that one variable's high values correspond to another variable's high values.

A negative covariance, on the other hand, implies that one variable's high values correspond to another variable's low values. If variables a and b have a covariance of -1 while variables b and c have a covariance of 20, we can make the following claims:

Claim 1: Variables a and b have a negative relationship. Since their covariance is -1, we know that if variable a increases, variable b will decrease and vice versa.

Claim 2: Variables b and c have a positive relationship. Since their covariance is 20, we can assume that if variable b increases, variable c will also increase and vice versa.

The fact that variables a and b have a negative covariance and variables b and c have a positive covariance indicate that the relationship between these three variables is more complicated than a simple linear correlation

The relationship between the three variables may be determined by additional factors that aren't accounted for by the covariance between them.

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Yes, you can find the standard error now by taking the standard deviation divided by the square root of the sample size.

The standard deviation in a data set is the mean deviation of the data from their mean.

For sample size n for a data set with data points X1, X2, X3……..Xn for exact standard deviation:

1. Calculates the arithmetic mean M of the set data by adding them all and dividing by n.

M = ( X1+X2+ X3+…..+Xn) / n

2. Calculate the deviation (D) for each data point from the mean M

D = (Xi-M) for all

3. Squaring and sum of all deviations, sum of squares (SS)

4. Divide SS by n.This quantity is the sample variance V

5. Take the square root of V.

6. This quantity is the sample standard deviation, SD.

There are some specific terms and issues to consider. If you are estimating the standard deviation of a population from a sample and the population mean $ is not known, M serves as an unbiased estimate of $. Again, SS is divided by (n-1), not n.

The resulting standard deviation is an unbiased estimate of the population standard deviation based on the sample size, n. If the population mean is known, use that mean instead of the sample mean. , and the SD of the sample is only calculated for n through SS dives.

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The estimated median price of a single-family home in Charleston/No. Charleston in the 1st Quarter of 2008 is $201,048. If the median price continues to decrease at the same rate for the next two years, the estimated median price of a single-family home in the 1st Quarter of 2011 would be $144,458.

(a) To estimate the median price of a single-family home in the 1st Quarter of 2008, we need to calculate the original price before the 8.15% decrease. Let's assume the original price was P. The price after the decrease can be calculated as P - 8.15% of P, which translates to P - (0.0815 * P) = P(1 - 0.0815). Given that the end of 1st Quarter of 2009 median price was $184,990, we can set up the equation as $184,990 = P(1 - 0.0815) and solve for P. This gives us P ≈ $201,048 as the estimated median price of a single-family home in the 1st Quarter of 2008.

(b) If the median price of a single-family home falls at the same rate for the next two years, we can calculate the price for the 1st Quarter of 2011 using the estimated median price from the 1st Quarter of 2009. Starting with the median price of $184,990, we need to apply an 8.15% decrease for two consecutive years. After the first year, the price would be $184,990 - (0.0815 * $184,990) = $169,805.95. Applying the same percentage decrease for the second year, the price would be $169,805.95 - (0.0815 * $169,805.95) = $156,012.32. Therefore, the estimated median price of a single-family home in the 1st Quarter of 2011 would be approximately $144,458.

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Answer:

A ≈ 3.9

Step-by-step explanation:

How to solve

A=πr2

C=2πr

A=C2

4π=72

4·π ≈ 3.8993

Therefore, the circle in square meters in the nearest tenths is A ≈ 3.9

Answer: The difference between 125 million dollars and 312.5 million dollars is, 187.5 Million Dollars.

Answer:

45 degree angle

Step-by-step explanation:

180-55-80=x

180- 135=x

45=x

Answer:

45

Step-by-step explanation:

180=55+80+x

135+x=180

180-135=45

Answer:

1. = 20

2.= 20

3.= 225

4.= 800

5.= 2

Step-by-step explanation:

Just do the RATE% of the BASE and you will get the PERCENTAGE. :)

Answer:

9

Step-by-step explanation:

To find y, we can divide both sides by 4:

36 = 4x (divide by 4)

36 ÷ 4 = x

x = 9

Hope this helps!

Answer: 9

Step-by-step explanation: 4x=36. 36/4=9. x=9

Answer:

It is A on edge 2020

Step-by-step explanation:

The equation of the number of students needed to make $1,500 in profit will be 1,500 = 5n – 300. Then the correct option is A.

Algebra is the study of graphic formulas, while logic is the interpretation among those signs.

Mustafa's soccer team is planning a school dance as a fundraiser.

The DJ charges $200 and decorations cost $100.

The team decides to charge each student $5.00 to attend the dance.

If n represents the number of students attending the dance.

The total amount of expenses will be

Total Expense = $200 + $100

Total Expense = $300

The total amount of charges will be

Total Charge = 5n

Then the amount of the profit will be

Profit = Total charge – Total expense

1,500 = 5n – 300

Then the equation can be used to find the number of students needed to make $1,500 in profit will be 1,500 = 5n – 300.

Then the correct option is A.

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Answer:

2a(3a + 8)

Step-by-step explanation:

Combine like terms

6a2 + 15 + a

6a2 + 16a

Answer:

2.8

Step-by-step explanation:

tan = opposite / adjacent

( opposite = side opposite of the angle and adjacent = side length that is not the opposite nor the hypotenuse ( longest side ) )

we are given an angle, ∠E = 26°

tanE = x / 5.7

tan26 = x / 5.7

==> multiply both sides by 5.7

5.7tan26 = x

==> simplify

x = 2.8 ( rounded )

Answer:

B or D

Step-by-step explanation:

I believe the answer is B or D if it is not im am very sorry i forgot

The given linear programming problem aims to maximize the objective function \(Z = 3x1 + 2x2\), subject to four constraints: x1 ≤ 4, x2 ≤ 6, 3x1 + 2x2 ≤ 18, and x1 ≥ 0, x2 ≥ 0.

The objective of linear programming is to optimize (maximize or minimize) a linear objective function while satisfying a set of linear constraints. In this case, the objective is to maximize \(Z = 3x1 + 2x2\).

The constraints in the problem define the feasible region, which is the set of all points that satisfy the constraints. The constraints state that x1 must be less than or equal to 4, x2 must be less than or equal to 6, and the linear combination \(3x1 + 2x2\) must be less than or equal to 18. Additionally, both x1 and x2 must be greater than or equal to zero.

To solve this linear programming problem, graphical methods or optimization algorithms such as the simplex method can be employed. The feasible region is determined by graphing the constraints and finding the overlapping region. The optimal solution is the point within the feasible region that maximizes the objective function.

The explanation of the solution, including the optimal values of x1 and x2, the maximum value of Z, and the graphical representation of the problem, can be provided based on the chosen method of solving the linear programming problem.

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Answer:

Step-by-step explanation:

A correlation coefficient of 0.55 implies a weak positive correlation, because it's close to 0.50. Remember that strong correlations are 1 or -1, positive or negative, and the middle of the interval represents no correlation.

Having said that, 0.55 indicates some correlation, but weak. Therefore, the right answer is C.

Her prediction will be somewhat likely to be close to the actual value.

We have given that,

Madelina wants to make a prediction using a linear model with a correlation coefficient of 0.55.

We have to determine the correct statement.

The correlation coefficient is a statistical measure of the strength of the relationship between the relative movements of two variables.

A correlation coefficient of 0.55 implies a weak positive correlation because it's close to 0.50. Remember that strong correlations are 1 or -1, positive or negative, and the middle of the interval represents no correlation.

Having said that, 0.55 indicates some correlation, but weak.

Therefore, the right answer is C.

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Answer:4x+4

Step-by-step explanation:

6-3= 3+1= 4 =4x+4

Answer:

Step-by-step explanation:

800-160=640

640/800=64/80

64/80=16/20

16/20=4/5

Answer=4/5

The fraction of his original money does he have left = 4/5 .

What is a fraction in math?

A boy has = 800 and spends = 160

800-160=640

640/800=64/80

64/80=16/20

16/20=4/5

Therefore, his original money left =4/5

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Answer:I don’t Knowt Try To Answer it yourself

Step-by-step explanation:

Answer: The measure of angle DBC is 125 degrees.

Step-by-step explanation:

Since BC is tangent to circle D at point C, we know that angle BDC is a right angle (90 degrees). Therefore, angle BCD is the complement of angle BDC and has measure 90 - 35 = 55 degrees.

Since segment BD connects the center of the circle to point B, it is a radius of the circle. Similarly, segment CD connects the center of the circle to point C and is also a radius of the circle. Therefore, angles CBD and ACD are both right angles (90 degrees).

Angle DBC is opposite to angle BCD, so it has the same measure of 55 degrees. Angle ACD is opposite to angle DBC, so it also has measure 55 degrees.

Finally, angle DBC and angle ABC form a linear pair and add up to 180 degrees. Therefore, angle DBC has measure 180 - 55 = 125 degrees.

Therefore, the measure of angle DBC is 125 degrees.

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Answer:

4

Step-by-step explanation:

10 * 40%

10 * 0.4 = 4

Answer:

Hi! 40% of 10=4

Step-by-step explanation:

Hope this helps! :)

Have a nice day! ♥

Answer:

Step-by-step explanation:

The following statements are true

- The expression -(-3.5) is equivalent to 3.5. The product of 2 minus sign will give a positive sign i.e -*- = + hence -(-3.5) = (-*-)*35 = +35 = 35.

- The opposite of 0 is itself. There is no negative value of zero hence 0 is still the same as -0 making the opposite of zero to still be be zero. The minus sign in -0 is insignificant due to the insignificance of the zero digit.

- The opposite of -3.5 is located 3.5 units to the right of 0 on the number line. Fora number line, the origin is always located at the centre. The value to the right are along the positive x-axis and are all positive values while the values located towards the left are the negative x-axis. The opposite value of - 3.5 is gotten by negating the value of -3.5 i.e -(-3.5) to give +3.5 and +3.5 is a positive value which is located towards the right of a number line.

This makes the fourth statement to be False

Sash's elevation is -8/3 miles with respect to the sea level, by basic algebra.

Now,

Given:

To find: Sasha's elevation in miles?

Finding:

=> She will be down by 4 (2/3) = 8/3

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