A home appraisal company would like to develop a regression model that would predict the selling price of a house based on the age of the house in years​ (Age), the living area of the house in square feet​ (Living Area) and the number of bedrooms​ (Bedrooms). The given Excel output shows the partially completed regression output from a random sample of homes that have recently sold. Which group of independent variables is significant in this model using alphaαequals=​0.05?

Answer:

x = - 1, y = 2

Step-by-step explanation:

Given the 2 equations

6x + 5y = 4 → (1)

19x + 2y = - 15 → (2)

Multiplying (1) by 2 and (2) by - 5 and adding will eliminate the term in y

12x + 10y = 8 → (3)

- 95x - 10y = 75 → (4)

Add (3) and (4) term by term thus eliminating y

- 83x = 83 ( divide both sides by - 83 )

x = - 1

Substitute x = - 1 into either of the 2 equations and evaluate for y

Substituting into (1)

6(- 1) + 5y = 4

- 6 + 5y = 4 ( add 6 to both sides )

5y = 10 ( divide both sides by 5 )

y = 2

Step-by-step explanation:

use pythagoras theorem for finding the height

hypotenuse is 8cm

base is 4 cm

height?

a^2+b^2=c^2

64-16=a^2

a=7.07cm

Height of equilateral triangle is 7.07cm

Answer:

x=80

Step-by-step explanation:

the figure depicts a pentagon.

we can use linear pair method to find x

we should find interior angles

angle E= 180-90= 90

angle D=180-60= 120

angle C=180-x

angle A= 90 given

angle B= 180-40= 140

angle sum of a pentagon = 540

by formula (n-2)180. n is the number of sides

equation= 90+120+180-x+90+140= 540

620-x= 540

620-540=x

80=x

Answer:

60 .

Step-by-step explanation:

Normal pay for 4 hours = 10 * 4 = 40.

Overtime for 4 hours = 40 *  1 1/2

= 60.

Tim was paid 15 for his overtime.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Normal pay of Tim= 10

Overtime hours= 4

and, overtime pay = 1 1/2 of 10

So, the overtime pay

= 3/2 of 10

= 3/2 x 10

= 15

Hence, Tim was paid 15 for his overtime.

Learn more about unitary method here:

https://brainly.com/question/22056199

#SPJ5

Answer:

No there is a remainder of -512

Step-by-step explanation:

Divide (x+7) into (x^3 - 3x^2 + 2x - 8)

x^2-10x+72 R -512/(x+7)

According to the Factor theorem,  (x+7)  is not a factor of f(x) = x^3 − 3x^2 + 2x − 8.

The theorem is as follows: A polynomial f(x) has a factor (x−p) if and only if f(p)=0.  

Consider, f(x) = x^3 − 3x^2 + 2x − 8

Here, the expression we have is (x + 7), so we have to find f(-7) in order to check if (x+7) is a factor of f(x) or not

Here,  p = −7  

Now, lets check

f(−7)=(−343)−3(49)−14−8  

f(−7)=−343−147−14−8  

f(−7)=−512, which is not equal to 0  .

So, According to the Factor theorem,

(x+7)  is not a factor of f(x) = x^3 − 3x^2 + 2x − 8.

Learn more about remainder theorem;

https://brainly.com/question/13000199

#SPJ2

Answer:

-40

Step-by-step explanation:

-25 -(-5) + (-20)

-25 + 5 - 20

-20 - 20

= - 40

Note that:

+ ( + ) = +

+ ( - ) = -

- ( + ) = -

- ( - ) = +

Answer:

Hello There!

~~~~~~~~~~~~~~~~~~~

-25 -( -5) +(- 20) =

-40

Step-by-step explanation: Simplify the expression.

Hope this helped you. Brainliest would be nice!

☆_____________❤︎______________☆

Answer:

D

Step-by-step explanation:

Given

[tex]R_{y-axis}[/tex] ￮ [tex]R_{y=x}[/tex] : (2, 3 )

Then the order of reflections is from right to left, that is

Under a reflection in the line y = x

a point (x, y ) → (y, x ) , thus

(2, 3 ) → (3, 2 )

Under a reflection in the y- axis

a point (x, y ) → (- x, y ) , thus

(3, 2 ) → (- 3, 2 ) → D

Answer:

21.14 lbs.

Step-by-step explanation:

So you plug in x=6.

y=3.27(6)+1.52=21.14

Answer:

I hope it will help you...

Answer:

The 8ft tall pine tree will not affect the box plot here is why........

Outliers are important because they are numbers that are "outside" of the Box Plot's upper and lower fence, though they don't affect or change any other numbers in the Box Plot they are still important.

If you want to find your fences you will first take your IQR and multiply it by 1.5. I call this your "magic number".

Lower fence: Take your Q1 and subtract it from your magic number, that number your get is your lower fence.

Upper fence: Take your Q3 and add it to your magic number, that number you get is your upper fence.

Answer:

[tex]\approx[/tex] 57 gallons

Step-by-step explanation:

Given:

Silo needs to be painted.

Height of silo = 80 feet

Diameter of silo = 20 feet

One gallon of paint covers 100 sq ft

To find:

Gallons of Paint required to paint the outside of silo = ?

Solution:

We need to first calculate the lateral surface area(LSA) of this cylinder shaped silo.

[tex]LSA = 2\pi rh[/tex]

where r is the radius and

h is the height of cylinder.

[tex]r = \dfrac{Diameter}2\\\Rightarrow r = 10\ ft[/tex]

Putting the values in formula:

[tex]LSA = 2\times 3.14\times 10\times 80\\\Rightarrow LSA = 5024\ sq \ ft[/tex]

Total surface area of cylinder = LSA + 2 [tex]\times[/tex] Area of base

Total surface area of cylinder = LSA + 2 [tex]\times[/tex] [tex]\pi r^{2}[/tex]

TSA = [tex]5024 +2 \times 3.14 \times 10^2 = 5024 +628=5652\ sq \ ft[/tex]

100 sq ft requires number of gallons = 1

5652 sq ft requires number of gallons:

[tex]\dfrac{1}{100} \times 5652 \approx 57\ gallons[/tex]

Answer:

Step-by-step explanation

Answer:

y = -x - 1

Step-by-step explanation:

hello,

this is a line, right?

So the equation should be something like

y = ax+b and we need to find a and b

we can see that the points (-1,0) and (0,-1) are in the line so we can write

0 = a*(-1) + b <=> b - a = 0 <=> a = b

-1 = a*0 + b <=> b = -1

so the equation is

y = -x - 1

hope this helps

Answer:

y = - x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 2, 1) and (x₂, y₂ ) = (0, - 1)

m = [tex]\frac{-1-1}{0+2}[/tex] = [tex]\frac{-2}{2}[/tex] = - 1

The line crosses the y- axis at (0, - 1 ) ⇒ c = - 1

y = - x - 1 ← equation of line

Answer:

x=6

Step-by-step explanation:

Suppose x is 36÷6

x=36÷6

x=6

Answer:

36 / 6 = 6

36 = 6 * 6

36 = 36

Hope this somewhat helps!

Answer:

Probability of blue or red = 3/10

Step-by-step explanation:

4 are black 10 are blue, 3 are red, 6 are green , 6 are blue and red and 1 .

Total = 30

Probability of having a blue = 6/30

Probability of having a blue= 1/5

Probability of a red = 3/30

Probability of a red= 1/10

Probability of a blue or a red=

Probability of blue + probability of red

= 6/30 + 3/30

= 9/30

= 3/10

Answer:

16

Step-by-step explanation:

64 = 4x

64/4 = 4x/4

16 = x

Answer:

the answer to this question would be 9 which is B

Answer:

A) f(x)

Step-by-step explanation:

f(x) has 4 x-intercepts, becoz it "cross" the x axis 4 times.

g(x) would have an infinite number of intercepts coz it is a cos function, but it gave a limit to the domain which is 0 to 2[tex]\pi[/tex], so it only has 2 x-intercepts.

h(x) is the degree of x^3, so in theory, it has 3 x-intercepts.

The function that has the most x-intercept is given by: Option A: f(x)

The x-intercept of a function of variable x ( y = f(x) ) form is an intersection fo the x-axis and the curve of the function.

The x-intercept for a function y = f(x) is a solution to the equation f(x) = 0 becuase at that value of x, the function f(x) lies on x-axis, where y is 0. Values of x-intercept for a function f(x) are also called roots or solution of f(x) = 0 equation.

Suppose that we've got a polynomial function as y = p(x),

where p(x) is of degree n (the highest power its variable pertains in any of its composing terms).

Then, the maximum number of roots it can possess for p(x) = c (c is a constant), or p(x) - c = 0 is n

So, the number of roots of p(x) - c = 0 cannot exceed the degree of p(x).

From the graph, we see that:

f(x) intersects x-axis at 4 places, so it has 4 x-intercepts.

g(x) intersects the x-axis at 2 places as in the graph, and therefore, it has 2 x-intercepts.

h(x) is a polynomial of degree 3. The maximum number of intercepts it can have is the maximum number of roots h(x) = 0 can have which is 3(the degree of h(x) ). So it cannot be bigger than 3.

Thus, the function that has the most x-intercept is given by: Option A: f(x)

Learn more about x-intercept here:

https://brainly.com/question/14764115

Answer:

2.Ellipse

Step-by-step explanation:

The given equation represents an ellipse.

Standard form of ellipse is given as:

[tex] \frac{x^2}{a^2} +\frac{y^2}{b^2} = 1\\\\

\implies \frac{x^2}{16} - \frac{y^2}{4} = 1\\[/tex]

Answer:

(a)Exponential

(b)[tex]P(t)=4.70(1.0136)^t[/tex]

(c)The price of milk next year will be: $4.76

(d)5 years

Step-by-step explanation:

The price of a gallon of milk has been rising about 1.36% per year since 2000.

(a)Since the price grows by a percentage (or constant factor) each year, an exponential function would be best to model the scenario.

(b)The exponential growth model is given as:

[tex]P(t)=P_0(1+r)^t$ where:\\P_0$=Initial Price\\r=Growth factor\\t=time (in years, for this case)[/tex]

The independent variable in the function is t. This represents the number of years since 2000.

(c)

[tex]I$nitial Price, P_0=\$4.70\\r=1.36\%=0.0136\\P(t)=4.70(1+0.0136)^t\\\\P(t)=4.70(1.0136)^t[/tex]

Therefore, the price of milk next year will be:

[tex]P(1)=4.70(1.0136)^1=\$4.76[/tex]

(d)We want to determine how long it will take for the price to top $5.

P(t)=$5

[tex]5=4.70(1.0136)^t\\$Divide both sides by 4.7$\\(1.0136)^t=\frac{5}{4.7} \\$Change to logarithm form\\t=Log_{1.0136}\frac{5}{4.7}\\t=4.58[/tex]

Therefore, in exactly 4.58 years, the milk price would be $5. Therefore, by the 5th year, the milk price would top $5.

Answer:

9 cm

Step-by-step explanation:

c^2=81

Take the square root of both sides.

The square root of c^2 is c.

The square root of 81 is 9.

c=9

Answer:

C = 9 centimeters

Step-by-step explanation:

First, look at the area of a square, which formula is c^2 or in standard format - s^2. Thus, we can say, c^2 = 81. Then, we can simplify, and put c = √81. Since 81 is a perfect square, 9 *  9 = 81. Thus the answer is 9 centimeters.

Answer:

730 trains would be needed  to seat 350,000 passengers , 10950 carriages would be needed and 350400 seats would be required

Step-by-step explanation:

Number of carriages in 1 train = 15

Number of seats in 1 carriage = 32

Number of seats in 15 carriages =[tex]32 \times 15 =480[/tex]

So, Number of seats in 1 train = 480

Number of trains needed  to seat 350,000 passengers=[tex]\frac{350000}{480}=730[/tex]

Number of carriage in 1 train = 15

Number of carriage in 730 trains = [tex]15 \times 730=10950[/tex]

Number of seats in 1 carriage = 32

Number of seats in 10950 carriage =[tex]32 \times 10950=350400[/tex]

Hence 730 trains would be needed  to seat 350,000 passengers , 10950 carriages would be needed and 350400 seats would be required

Step-by-step explanation:

if each the bonus is shared equally each will get 420

if 40% is shared by managers each manager will get 560

if 7 sales persons share 60% each will get 360

therefore Peter salesperson will get 360

but he thinks he will get 336 because if 420 is 125% that is including his extra 25% then hundred percent of the 420 is 336 which is not what he will get there for Janet is correct

Answer:

d. May result in the TSLS being inconsistent in large samples

Step-by-step explanation:

Two-stage least squares (TSLS), regression analysis is a statistical technique that is used for two distinct stages of variables regression, so, when there are more relevant instruments than required, is like having a larger sample size in that the more information is available for use in the Instrumental Variables regression (IV).

Answer:

64

Step-by-step explanation:

Answer:

The correct answer will be "0.756596 m²".

Step-by-step explanation:

The given values are:

The radius of an umbrella,

r = 0.4 m

The height of an umbrella,

h = 0.45 m

As we know,

The lateral surface of an umbrella will be:

⇒  [tex]\pi r\sqrt{r^2+h^2}[/tex]

On substituting the values, we get

⇒  [tex]\pi \times 0.4\sqrt{(0.4)^2=(0.45)^2}[/tex]

⇒  [tex]0.756596 \ m^2[/tex]

So that the amount of fabric needed will be "0.756596 m²".

Answer:

000.611

Step-by-step explanation:

0.02×0.3055

=0.00611

So in three decimal places

000.611

Answer:

12^2(Pi)+24*(Pi)*35

Step-by-step explanation:

12^2(Pi)+24*(Pi)*35

Answer:

Monday= -5°c

on Tuesday dropped 2 °c

question

what was temperature on Tuesday

answer

=-5 - 2= -7°c on tuesday

hope it helps you

#passionforlearning

Answer:

The correct answer is A. x > -3/35

Step-by-step explanation:

-3/2(x - 1/3) > 1/5 - 5x

-3/2x + 1/2 > 1/5 - 5x

-15x + 5 > 2 - 50x

-15x + 50x + 5 > 2

-15x + 50x > 2 - 5

35x > 2 - 5

35x > -3

x > -3/35

Hope this helped! :)

Answer: A. x > -3/35

Step-by-step explanation: