two years ago one out of every five sales of homes were made to a first time buyer. in a recent sample of 250 sales of homes 39 were made to first time buyers. has the percentage of home sales the first time buyers change from what it was two years ago? a=10%

Answer:

480

Step-by-step explanation:

Substitute in the numbers for your letters, the length being 4, width being 10 and height being 12. To make things easier, multiply 10 by 12 which gets you 120. Then multiply 120 by 4 and you get 480.

Answer:

x=6

Explanation:

16-(x+5)=15

The change in the volume of water in 1 minute is a decrease of 0.16 milliliters.

Since a water tank in Stewart's home had a small, steady leak loss of 1 3/5 mL in 10 min, to find the change in the volume of water in 1 minute, the following calculation must be performed:

Therefore, the change in the volume of water in 1 minute is a decrease of 0.16 milliliters.

Learn more in https://brainly.com/question/19747831

Answer:

3.-5 is correct

Step-by-step explanation:

We are given,

The table which represents a function.

Now, 'A function is a relation in which every element of the domain has a unique image'.

So, from the table, we see that,

-5 has the image 15.

So, it cannot have another image.

Thus, the number which cannot be used to complete the table is -5.

Hence, option C is correct.

Answer:

28

Step-by-step explanation:

radius= 14

circumstances of tire=?

Based on given conditions, formulate

circumstances= 2 multiply radius

= 2 multiply by 14

= 28

Rise

Run

Rise = 3

Run = 6

1

2

Answer:

point-slope form, standard form, and slope-intercept form

Step-by-step explanation:

The three main types of linear functions are: point-slope form, standard form, and slope-intercept form.

Here is an image with each form

Answer:

15/28 or 0.53 decimal form

Step-by-step explanation:

11/14 + (-1/4)

11/14 + -1/4

= 15/28 or 0.53 decimal form

Answer:

11/14 + (-1/4) = 15/28

i am not sure

Answer:

19/12

Step-by-step explanation:

1.75=7/4

7/4-1/6

21/12-2/12

19/12

Answer:

19/12

Step-by-step explanation:

1.75=7/4

7/4-1/6

21/12-2/12

19/12

The correct answer is option C.

If the model improves after adding an interaction, R² should increase and the standard deviation should decrease. Option C is the right answer.

R², also known as the coefficient of determination, is a statistical measure of how well the regression line fits the data points. It indicates the proportion of variance in the dependent variable that can be explained by the independent variables.

The standard deviation is a measure of how spread out the data is in relation to the mean. If the data points are more concentrated around the mean, the standard deviation will be smaller. If the data is more dispersed, the standard deviation will be larger. Interaction terms in regression models explain how the relationship between two independent variables influences the dependent variable.

The inclusion of interaction terms can enhance the model's explanatory power by providing a more accurate depiction of the relationship between the independent and dependent variables. This can result in an increase in R² and a decrease in standard deviation.

So, we can say that if the model improves after adding an interaction, R² should increase and the standard deviation should decrease. Option C is the correct answer.

To more about explanatory power visit:

https://brainly.com/question/28357265

#SPJ11

The transformed system are:

Equation 1: x + 2y + 4z = 1

Equation 2: 4x - 4y - 5z = 2

The abbreviation of the indicated operation "Multiply the first equation by 2" is "M1→2M".

After multiplying the first equation by 2, the system becomes:

{ 2x - 4y = 8

3x + 4y = 8

The abbreviation of the indicated operation "Change the third equation by adding to it (-5) times the first equation" is "C3+(-5)×1C".

After performing this operation, the system becomes:

{ x + 2y + 4z = 1

4x - 4y - 5z = 2

The simplified answers for the transformed system are:

Equation 1: x + 2y + 4z = 1

Equation 2: 4x - 4y - 5z = 2

Learn more about equation  from

https://brainly.com/question/29174899

#SPJ11

The mass of the solid is 7π/2 units.

The task is to calculate the mass of the solid.

Step-by-step solution: The solid occupies the region between the unit sphere at the origin and a sphere of radius 2 with the center at the origin. The spherical coordinates in 3D space are (r,θ,φ), where:r = radius, θ = polar angle, φ = azimuthal angle.

The equations of the given sphere are r=1 for the unit sphere and r=2 for the second sphere.

Using spherical coordinates, the solid can be defined as 1≤r≤2, 0≤θ≤2π, 0≤φ≤π.

The density is equal to the distance from the origin, i.e. ρ = r.

The mass of the solid is given by the triple integral ρ dV taken over the solid, where dV is the volume element in spherical coordinates.dV = r²sin φ dφdθdr

The limits for the triple integral are: 0 ≤ θ ≤ 2π, 0 ≤ φ ≤ π, and 1 ≤ r ≤ 2.M = ∭ρ dV = ∭r(r²sin φ) dφdθdr= ∫[0,2π]∫[0,π]∫[1,2] r³sin φ drdφdθ= ∫[0,2π]∫[0,π] -cos φ [r⁴/4]₁ ₂ drdφdθ= ∫[0,2π]∫[0,π] 7/4 cos φ dφdθ= ∫[0,2π] 7sin φ/4 ]₀  π dθ= 14π/4= 7π/2 units.

The mass of the solid is 7π/2 units.

To know more about azimuthal angle visit:

https://brainly.in/question/11338310

#SPJ11

Answer:

1.774 standard deviations

Step-by-step explanation:

From the data, the minimum value is x = 13 and the maximum value is x' = 18. The mean X = 15.75 and the standard deviation, σ = 1.55.

The difference between the mean and the minimum value is the deviation from the mean. So, X - x = 15.75 - 13 = 2.75. To find the number of standard deviations this is, we divide it by the standard deviation, σ = 1.55.

So, 2.75/1.55 = 1.774.

So, the number of standard deviations to contain the value 13 is 1.774σ

Also, the difference between the maximum value and the mean is the deviation from the mean. So, x' - X = 18 - 15.75 = 2.25. To find the number of standard deviations this is, we divide it by the standard deviation, σ = 1.55.

So, 2.25/1.55 = 1.452.

So, the number of standard deviations to contain the value 18 is 1.452σ

Since 1.774σ > 1.452σ and 1.774σ would contain both the values of 13 and 18, the number of standard deviations from the mean required to contain the values is  1.774 standard deviations.

Step-by-step explanation:

Let the number be \(\overline{abc}=100a+10b+c\).

\(100a+10b+c=34a+34b+34c \\ \\ 66a-24b-33c=0 \\ \\ 22a-8b-11c=0\)

Taking the equation mod \(11\) yields \(-8b \equiv \pmod{11}\), meaning \(b=0\).

So, \(22a-11c=0 \implies c=2a\).

So, the only possibilites are \((a,c)=(1,2), (2,4),(3,6), (4,8)\).

Therefore, there are \(4\) such numbers.

Answer:

592 miles

Step-by-step explanation:

Answer:

592 miles

Step-by-step explanation:

1. To figure out how many miles Jordan drove, multiply 6 by 55. 6 x 55 = 330.

2. To figure out how many miles Matt drove, multiply 3 by 60. 3 x 60 = 180.

3. Add 330 and 180 together to find out how many miles they drove in total. 330 + 180 = 510 miles.

4. Add Isaac's 82 miles to 510 miles to get the answer of 592 miles.

Given:

We have the graph below:

Answer:

D

Step-by-step explanation:

Answer: The one on the bottom right.

Step-by-step explanation:

Symmetry is basically like a mirror. The line of symmetry is the exact point where it starts to reflect.

A symmetrical shape can also be folded onto itself equally.

Looking at the photo, the picture on the bottom right is the left part of the figure.

Answer:

4.5

Step-by-step explanation:

4.5>3.75

If we forgot about the decimals, we would have 4 and 3, and 4 is automatically larger; even with the decimals.

Hope this helps!

-AxekickNebulite

The value of the measure of the line segment CD is,

⇒ CD = 10

We have to given that;

In circle,

CD = 2 + x

BC = 8

AB = 12

Hence, We can formulate;

AB² = BD × CD

12² = (8 + 2 + x) × 8

144 = 8 (10 + x)

18 = 10 + x

x = 18 - 10

x = 8

Thus, The value of the measure of the line segment CD is,

⇒ CD = 2 + x = 2 + 8 = 10

Learn more about the circle visit:

https://brainly.com/question/24810873

#SPJ1

Step-by-step explanation:

96/160  X  100% = 60 %

Answer:

1726280

Step-by-step explanation:

The terminal point on the unit circle determined by t = 11/6 is approximately:

p(-0.866, 0.5)

For the terminal point on the unit circle determined by t = 11/6, we use the fact that the angle t (in radians) measured counterclockwise from the positive x-axis to the terminal point is given by:

t = arctan(y/x)

where (x, y) is the point on the unit circle.

Since we know that the point lies on the unit circle, we have:

x^2 + y^2 = 1

Solving for y, we get:

y = ±sqrt(1 - x^2)

Substituting this into the equation for t, we get:

t = arctan(±sqrt(1 - x^2)/x)

To determine the correct sign, we note that t = 11/6 is in the second quadrant, where x is negative and y is positive.

Therefore, we need to take the positive square root:

t = arctan(sqrt(1 - x^2)/(-x))

Multiplying both sides by -x and taking the tangent of both sides, we get:

tan(t) = sqrt(1 - x^2)/x

Squaring both sides and using the identity tan^2(t) + 1 = sec^2(t), we get:

x^2 = 1/(1 + tan^2(t)) = 1/(1 + (tan(11/6))^2)

Solving for x, we get:

x = -sqrt(1/(1 + (tan(11/6))^2)) ≈ -0.866

Substituting this value of x into the equation for y, we get:

y = sqrt(1 - x^2) ≈ 0.5

Therefore, the terminal point on the unit circle determined by t = 11/6 is approximately:

p(-0.866, 0.5)

To know more about terminal points refer here :

https://brainly.com/question/20336387#

#SPJ11

List of  four quantitative forecasting methods.

Moving averages, exponential smoothing, trend projection, and linear regression are all in the list. (Forecasting strategies, medium)

The average distance between observations and their mean is indicated by the variability metric known as mean absolute deviation . It uses the data original units to facilitate interpretation. Greater values imply a bigger divergence from the mean. Lower values, on the other hand, are related to the data surrounding it clustering. The average absolute deviation and the mean deviation are other names for the mean absolute deviation.

The next three procedures are necessary to calculate the mean absolute deviation.

   1.By adding up all the observations and dividing by the sample size,

      you can determine the sample average.

  2.Discover the total deviation from the mean of each data point. When  

      negative signals appear, ignore them and instead deduct the

      observed values from the mean

 3.Divided the total value of above step

To learn more about mean absolute deviation visit here : https://brainly.com/question/23556021

#SPJ4

Answer:

-2n-6

Step-by-step explanation:

Answer: -2n+7

Step-by-step explanation:

-6n+4 equals 2n

3+4 equals 7

-2n+7

Answer:

Please check answer for explanation

Step-by-step explanation:

The independent variable is x

The dependent variable is y

The domain is the range of values of x

That will be 1-4

Now let’s get the range, the range just represent the y-values of the terms in the domain

at x = 1

y = 0.75(1) + 2 = 2.75

at x = 4

y = 0.75(4) + 2 = 3 + 2 = 5

The range is 2.75 to 5

Answer:

Rational

Rational

Rational

Rational

Rational

Irrational

Irrational

Rational

Step-by-step explanation:

First we need to establish what a rational, and a irrational numbers are.  A rational number are basically integers that can be written as fractions which means any of the options that are integers or fractions are in fact rational numbers. A irrational number are basically numbers that cannot be written as a fraction which means things like repeating decimals or just numbers that cannot be expressed as a fraction of two other whole numbers.

First option:

\(-4+23\)

\(-4 + 23=19\)

19 is a rational number because it can be expressed as two integers which are 1 and 19

Second option:

\(\frac{2}{3} +\frac{1}{2}\)

Both are fractions which means the sum will be a fraction which also means it is a rational number since we previously established that every fraction is a rational number.

Third option:

\(-\frac{1}{2} + 12\)

You can write 12 as a fraction which is 12/1 and then solve which the sum will also be a fraction which means it will also be a rational number.

Fourth Option:

\(\frac{2}{5} +15\)

15 can be written as 15/1 which means it is a rational number which also means the sum of the two fractions will also be a rational number.

Fifth option:

Adding fractions, fractions are rational numbers which means the sum will also be a rational number

Sixth option:

Pie is a infinite decimal number which means it is irrational because it cannot be written as a fraction.

Seventh option:

\(\sqrt[]{3} +\frac{5}{8}\)

/3 cannot be written as a fraction which means the entire equation is irrational because a rational plus a irrational number will always equal a irrational number.

Eighth option:

\(3.25+4.17\)

Since how these decimals are not repeating they are both rational numbers.

Hope this helps.