One key advantage for including multiple predictor variables in the equation of a regression line is that it allows you to

Answers

Answer 1
One key advantage of including multiple predictors in the regression equation is that it can detect the extent to which two or more predictor variables interact. In the multiple regression, it can define situations in which one variable or the predictor variable is used to predict another variable which the criterion variable. While a single variable can be used to make accurate predictions, many behaviors are often too complex to be represented by a simple linear equation. That is often the changes in a single predictor variable do not allow to accurately predict changes in a criterion variable. Predictions of many behaviors improve when it considers more information in predictor variable.  Multiple regression is used when using multiple predictor variables to predict changes in a criterion variable. 

Related Questions

The length of LN is 28 centimeters. What is the length of LP?

Answers

the diagonals cut each other in two 
so LP = 1/2 * 28 = 14

Answer:

we need a diagram or somthing

Step-by-step explanation:

A rectangular prism with a square base has a lateral area of 192 square yards and a surface area of 264 square yards. What is the length of a base edge?

Answers

A rectangular prism is like a cardboard shoe box. It has two equal bases, one on the top and the other on the bottom. It also has 4 lateral faces to close the figure. The surface area of the prism is the area of all its faces: the 4 side faces and the 2 bases. On the other hand, lateral surface area only accounts for the 4 lateral faces. Therefore, we can conclude that the total surface area is equal to the lateral surface area plus the areas of the two bases.

TSA = LSA + 2s²

Since the base is said to be the square, its area is equal to s² where s is the base edge. Because there are 2 bases, that's why it's 2s².

264 = 192 + 2s²
s² = (264-192)/2
s = √36
s = 6 yards

 

Use the functions f(x) = 4x − 5 and g(x) = 3x + 9 to complete the function operations listed below.

Part A: Find (f + g)(x). Show your work. (3 points)

Part B: Find (f ⋅ g)(x). Show your work. (3 points)

Part C: Find f[g(x)]. Show your work. (4 points)

Answers

A:

(f+g)(x)=f(x)+g(x)

(f+g)(x)=4x-5+3x+9

(f+g)(x)=7x+4

B:

(f•g)(x)=f(x)•g(x)

(f•g)(x)=(4x-5)(3x+9)

(f•g)(x)=12x^2-15x+36x-45

(f•g)(x)=12x^2+21x-45

C:

(f○g)(x)=f(g(x))

(f○g)(x)=4(3x+9)-5

(f○g)(x)=12x+36-5

(f○g)(x)=12x+31


What is the length of a diagonal of a cube with a side length of 10 cm? 200cm, 210cm, 300cm, 320cm

Answers

IF the side length is 10cm , then the length of diagonal of the base of the cube(x) is X² =(10)²+(10)² =200cm  so x = 10√2cm
so the length of diagonal of the cube(y) is
y² = (10)² + (10√2)² =300  so y =10√3cm

The solution is, 10√3cm  is the length of a diagonal of a cube with a side length of 10 cm.

What is Pythagorean theorem?

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.

here, we have,

given that,

the side length is 10cm ,

then the length of diagonal of the base of the cube(x) is

X² =(10)²+(10)²

    =200cm  

so x = 10√2cm

so the length of diagonal of the cube(y) is

y² = (10)² + (10√2)²

   =300  

so y =10√3cm

Hence, The solution is, 10√3cm  is the length of a diagonal of a cube with a side length of 10 cm.

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A pizza delivery shop averages 20 minutes per delivery with a standard deviation of 4 minutes. What is the probability that a pizza takes less than 15 minutes to be delivered?

Answers

We have the mean, μ = 20 and the standard deviation, σ = 4

X ≈ N(20, 4²)

We want P(X<15)

Standardising gives

P(X<15) = P(Z<[tex] \frac{15-20}{4} [/tex])
P(X<15) = P(Z< -1.25) ⇒ When the value of the z-score is negative, we will read the value of z<1.25 on the z-table then subtract the answer from 1

P(X<15) = 1 - P(Z<1.25)
P(X<15) = 1 - 0.8944
P(X<15) = 0.1056

Hence, the probability that pizza takes less than 15 minutes to be delivered is 0.1056 = 10.56%

The transformation from f to g represents a __________ stretch. f(x) = Square root of x. and g(x) = 6Square root of x.

Answers

The answer is vertical.
Answer:

The transformation from f to g represents a Vertical stretch.

Step-by-step explanation:

We are given a parent function f(x) as:

                      [tex]f(x)=\sqrt{x}[/tex]

and the transformed function g(x) as:

        [tex]g(x)=6\sqrt{x}[/tex]

We know that any function transformation of the type:

      f(x) → a f(x)

represents either a vertical stretch stretch or compression depending on the value of a.

If   0<a<1 then the transformation is a vertical compression and if a>1 then the transformation is a vertical stretch.

Here we have a=6>1

Hence, the transformation is a VERTICAL STRETCH.

(07.05 MC)

An equation is shown below:

4x + 2(x – 3) = 4x + 2x – 11

Part A: Solve the equation and write the number of solutions. Show all the steps. (6 points)

Part B: Name one property you used to solve this equation. (4 points

Answers

4x + 2(x - 3) = 4x + 2x - 11
4x + 2x - 6 = 4x + 2x - 11
6x - 6 = 6x - 11
6x - 6x = -11 + 6
0 = -5...incorrect......this has no solution...0 solutions

one property used was the distributive property :2(x - 3) = 2x - 6

Answer:

-6 = -11

Distributive Property

Step-by-step explanation:

A.

4x + 2(x – 3) = 4x + 2x – 11

4x + 2x - 6 = 4x + 2x - 11

6x - 6 = 6x - 11

-6 = -11

since -6 is not equal to -11, so there's no solution

B. Distributive property

Is the data set “heights of the women in the U.S. Congress” quantitative or qualitative? If it is quantitative, is it discrete or continuous?

Answers

The data is quantitative because you can average the data. It is not a label.
It is continuous because there are more than integer values of heights.

Answer with explanation:

The  “heights of the women in the U.S. Congress” is Quantitative,because height of person does not represent Quality, it shows "Quantity".It means it has Magnitude.

We can find mean , median and mode of women in Congress.

So, Height of women in US congress is Quantitative.

As, different Women have different Heights, that is any rational number , so The Height of different women will be a discrete data set.For, example, height of different women can be={167 cm, 187.6, 176.6,165.5,.....}

HELP !! HELP ME PLEASE WITH THESE 3 PROBLEMS !!!!25 POINTS !!!

Answers

4)

[tex]\bf \cfrac{model}{tower}\qquad \cfrac{2}{25}=\cfrac{m}{160}[/tex]

solve for "m"

5)

[tex]\bf \textit{sprinkle park to parking lot}\quad \cfrac{drawing}{park}\qquad \cfrac{15}{60}\implies \cfrac{1}{4} \\\\\\ \textit{playground to sprinkle park}\qquad \cfrac{drawing}{park}\qquad \cfrac{1}{4}=\cfrac{12}{p}[/tex]

solve for "p"

6)

[tex]\bf \begin{array}{ccllll} cake&people\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&18\\ x&108 \end{array}\implies \cfrac{1}{x}=\cfrac{18 }{108}[/tex]

solve for "x".

How to write 100000 in scientific notation?

Answers

The answer is
1×10^5

Answer:

100000 in scientific notation:[tex]100,000=1.0\times 10^{5}m/s[/tex]

Step-by-step explanation:

Scientific notation is defined as the notation in which a number is expressed in the decimal form. This means that the number is always written in the power of 10 form. The numerical digit lies between 0.1.... to 9.9.....

If the decimal is shifting to right side, the power of 10 is negative and if the decimal is shifting to left side, the power of 10 is positive.

We are given:  100,000

Converting this into scientific notation, we get:

[tex]\Rightarrow 100,000=1.0\times 10^{5}m/s[/tex]

As, the decimal point is shifting to left side, thus the power of 5 is positive.

find the measure of a base angle of a isosceles triangle if the measure of the vertex angle is 100

Answers

Sum of the angles in a triangle ... 180!

Isosceles, two of them are equal: 100 + 2x  =180, x = 40 degrees! <- That's the answer ;)

Please read the attached pic. I don't remember ever being taught this...

Answers

This is notation referring to the nCr combination formula. 

In this case, n = 7 and r = 3

Plug those values into the formula below and evaluate
n C r = (n!)/(r!*(n-r)!)
7 C 3 = (7!)/(3!*(7-3)!)
7 C 3 = (7!)/(3!*4!)
7 C 3 = (7*6*5*4!)/(3!*4!)
7 C 3 = (7*6*5)/(3!)
7 C 3 = (7*6*5)/(3*2*1)
7 C 3 = 210/6
7 C 3 = 35

Note: the exclamation marks refer to factorial notation.

Therefore, the answer is choice D) 35

How to go from sum of products to product of sums?

Answers

Multiplication gives us distribution over the products, so

 

(a′+b+d′) (a′+b+c′+f′) = a′ (a′+b+c′+f′) + b (a′+b+c′+f′) + d′ (a′+b+c′+f′)

 

And then you can then distribute again each of the factors on the right.

Then you should simplify in any given number of ways. To take as an example, you have a′b and ba′, and since a′b + a′b = a′b + a′b = a′b, you can just drop one of them. Since bb = b, you can rewrite bb as b and etc.

 

So in the end part we should arrive at a sum of products. Then you can just invert. For example, if at the end you had:

p′ = a′b + bc′ + d′f ′+ a′f′

 

Then we would have

p = p′′ = (a′b + bc′ + d′f′ + a′f′)′ = (a′b)′⋅(bc′)′⋅(d′f′)′⋅(a′f′)′

 

Then applying De Morgan's laws to each of the factors, e.g., (a′b)′ = a+b′, so we would have

p = (a+b′)⋅(b′+c)⋅(d+f)⋅(a+f)

which is a product of sums.

A basket contains 11 pieces of fruit: 4 apples, 5 oranges, and 2 bananas. Jonas takes a piece of fruit at random from the basket, and then Beth takes a piece at random. What is the probability that Jonas will get an orange and Beth will get an apple?

Answers

Final answer:

The probability that Jonas will get an orange and Beth will get an apple is 20/121.

Explanation:

To find the probability that Jonas will get an orange and Beth will get an apple, we need to find the probability of Jonas getting an orange and then multiply it by the probability of Beth getting an apple.

The probability of Jonas getting an orange is the number of oranges in the basket (5) divided by the total number of fruits (11):

P(orange for Jonas) = 5/11

The probability of Beth getting an apple is the number of apples in the basket (4) divided by the total number of fruits (11):

P(apple for Beth) = 4/11

To find the combined probability, we multiply these two probabilities together:

P(orange and apple) = P(orange for Jonas) * P(apple for Beth) = (5/11) * (4/11) = 20/121

let n be the first 3 of consecutive even integers. what is the sum of those integers?

Answers

assuming you meant that n is the first of the 3 even integers

even integers are 2 apart

so the 3 integers are n,n+2,n+4
the sum is n+n+2+n+4=3n+6

the sum is 3n+6

Gitta is asked to find the probability of getting all heads on 3 coin tosses. This is a compound event. True or False?

Answers

true, you have to get heads previously in order to get 3 in a row

Answer with explanation:

Event Joining by two or more Simple events is called Compound Event.

When you throw a coin once, getting either Head or Tail is a Simple event.

And , when you throw a coin and dice together, getting , Head and 1 , is a Compound event.Because here we joined two simple events, one is Throwing of a coin and another one is throwing a dice.

When you toss a coin thrice, it is combination of three simple events, that is tossing of coin three times .So total possible outcome

      [tex]=2^3\\\\=8[/tex]

Which can be written as: {(HHH),(HHT),(HTH),(THH),(HTT),(THT),(TTH),(TTT)}

Probability of getting all heads on 3 coin tosses

  = Sum of three simple events

            [tex]=\frac{HHH}{\text{Total 8 Outcome}}\\\\=\frac{1}{8}[/tex]  

or

Probability of Getting head in all three throws

[tex]=\frac{1}{2}\times \frac{1}{2} \times \frac{1}{2}\\\\=\frac{1}{8}[/tex]

Yes, this is a Compound event.

(02.02 MC)

Line segment RS is shown on a coordinate grid:
The line segment is rotated 270 degrees counterclockwise about the origin to form R'S'. Which statement describes R'S'?
R'S' is parallel to RS.
R'S' is half the length of RS
. R'S' is twice the length of RS.
R'S' is equal in length to RS.

Answers

R'S' is equal in length to RS.

length doesnt change, it was just rotated.
I think it's R'S' is equal in length to RS.

What is the value of the fourth term in a geometric sequence for which a1 = 30 and r = 1/2?

Answers

Final answer:

The value of the fourth term in the geometric sequence is 3.75.

Explanation:

The value of the fourth term in a geometric sequence can be found using the formula:



an = a1 * r(n-1)



Given that a1 = 30 and r = 1/2, we can substitute these values into the formula and solve for a4:



a4 = 30 * (1/2)(4-1) = 30 * (1/2)3 = 30 * (1/8) = 3.75



Therefore, the value of the fourth term in the geometric sequence is 3.75.

Final answer:

The value of the fourth term in the geometric sequence is 3.75.

Explanation:

A geometric sequence is a sequence of numbers where each term is found by multiplying the previous term by a constant ratio. In this case, the first term (a1) is 30 and the common ratio (r) is 1/2. To find the fourth term, we can use the formula:

an = a1 * r(n-1)

Substituting the values given, we have:

a4 = 30 * (1/2)(4-1)

Simplifying this expression, we get:

a4 = 30 * (1/8) = 3.75

Therefore, the value of the fourth term in this geometric sequence is 3.75.

(Solve for r) 0.5r − 3.8 = 5.66

Answers

0.5r - 3.8 = 5.66....add 3.8 to both sides
0.5r = 5.66 + 3.8
0.5r = 9.46...divide both sides by 0.5
r = 9.46 / 0.5
r = 18.92 <==
0.5r = 5.66 + 3.8
0.5r = 9.46
r = 9.46 ÷ 0.5
r = 18.92
r = 18/23/25

Please help with this question on simple interest!!! Attachment below.

Answers

The formula is
I=prt
I interest earned 72
P initial investment?
R interest rate 0.03
T time 2 years
Solve the formula for p
P=I÷rt
P=72÷(0.03×2)
P=1,200

If measure of angle p=(10x-2),measure of angle o=(3x+9) , and measure of angle q=(3x-3) , list the lengths of the sides of triangle OPQ from longest to shortest.

Answers

The sum of all angles of a triangle must be equal to 180°

So we can find the value of x...

10x-2+3x+9+3x-3=180

16x+4=180

16x=176

x=11

So the angles are 108°, 42°, 30°

Now using the Law of Sines we can solve for all sides.

(sina/A=sinb/B=sinc/C)

a/sin30=b/sin42=c/sin108

However, we would need to know at least one side length to solve for sides a,b, and c numerically, otherwise it can be any multiple of an arbitrary choice for the smallest side.  Let a=1 for example:

b=sin42/sin30, c=sin108/sin30

b≈1.34,  c≈1.90

a=1, b=1.34, c=1.9

Anyway...

If you are given any side length:

a/sin30=b/sin42=c/sin108 still holds true and you can solve for the other side lengths...

Answer:

OQ > PQ > OP

Step-by-step explanation:

In this question measure of all angles in a triangle has been given.

m∠ p = (10x - 2)

m∠ q = (3x - 3)

m∠ o = (3x + 9)

Since total of all angles is 180°, so we will equate the total of all angles to 180°

∠p + ∠q + ∠o = 180°

(10x - 2) + (3x - 3) + (3x + 9) = 180°

(10x + 3x + 3x) -2 - 3 + 9 = 180

16x - (2 + 3 - 9) = 180°

16x + 4 = 180

16x = 180 - 4

16x = 176

x = [tex]\frac{176}{16}=11[/tex]

Now we will find the measure of each angle.

∠p = (10x - 2) = 10×11 - 2 = (110 - 2) = 108°

∠q = (3x - 3) = 3×11 - 3 = (33 - 3) = 30°

∠o = (3x + 9) = 3×11 + 9 = (33 + 9) = 42°

As we know in a triangle, angle opposite to the largest side is largest and angle opposite side is the smallest.

Since ∠p > ∠o > ∠q

Therefore, in Δ OPQ opposite sides to these angles will be in the same ratio.

OQ > PQ > OP

Solve the equation ,and check the solution.

r - 3 r
____ = __
10 13 Check:



Answers

Things are a bit cluttered. 
I'm assuming the equation should be (r-3)/10 = r/13.

Use parenthesis to indicate what is being divided. In this case all of "r-3" is over 10. 

If my assumption above holds up, then we can solve for r like so
(r-3)/10 = r/13
13(r-3) = 10r ... cross multiply
13r-39 = 10r
13r-39-13r = 10r-13r ... subtract 13r from both sides
-39 = -3r
-3r = -39
-3r/(-3) = -39/(-3) ... divide both sides by -3
r = 13

The value of r is r = 13

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

Check:

Replace every copy of "r" with "13" to get
(r-3)/10 = r/13
(13-3)/10 = 13/13
10/10 = 13/13
1 = 1 ... equation is true; answer has been confirmed

Final answer:

To solve the equation, we cross multiply to eliminate the fractions and solve for r. The solution is r = 13. We can check the solution by substituting it back into the original equation.

Explanation:

To solve the equation (r - 3) / 10 = r / 13, we can cross multiply to eliminate the fractions. This gives us 13(r - 3) = 10r. Distributing, we get 13r - 39 = 10r. We can then solve for r by subtracting 10r from both sides and adding 39 to both sides. This gives us 3r = 39. Dividing both sides by 3, we find that r = 13.

To check the solution, we substitute r = 13 back into the original equation. The left side becomes (13 - 3) / 10 = 10 / 10 = 1, and the right side becomes 13 / 13 = 1. Since both sides are equal to 1, we can confirm that the solution r = 13 is correct.

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Find the total area of the prism in ( _+_√_ )

Answers

First find the hypotenuse of the right triangle bases.
a^2 + b^2 = c^2
4^2 + 6^2 = c^2
16 + 36 = c^2
52 = c^2
2√13 = c

Triangle bases:
A = (1/2) * b * h * 2
A = (1/2) * 4 * 6 * 2
A = 24 ft^2

Front Rectangle:                 Left side Rectangle             Back Side Rectangle
A = 8 * 2√13 = 16√13  ft^2      A = 4 * 4 = 32 ft^2           A = 6 * 8 = 48 ft^2

24 + 32 + 48 + 16√13 =        Total area = 104 + 16√13 ft^2

What part of a aday is 4 hours and 20 mintes?

Answers

Let's convert everything to minutes and create a fraction.

A day has 24*60 = 1440 minutes
4 hours and 20 minutes is 4*60+20 = 260 minutes

The fraction 260/1440 simplifies to 13/72 part of a day.

A rectangle is 42 square feet. what percent of the area of the rectangle is a square with side lengths of 6 feet?

Answers

area = L x w

42 = 6 x w

w=42/6 = 7

rectangle is 6 x 7

square would be 6 x 6 = 36 square feet

36/42 = 0.857 = 85.7% ( Round answer if needed)

1. is acute. 2. is isosceles. 3. is right. Which two statements contradict each other?

Answers

Answer:

the answer is 2 and 3

Step-by-step explanation:

I took the test

Evaluate S5 for 400 + 200 + 100 + … and select the correct answer below.
25
775
1,125
500

Answers

The sum of first five terms for the geometric series is 775. The correct answer is (B).

What is a geometric sequence?

In a geometric sequence, the ratio of two consecutive terms are always equal.

The general expression for the nth term is given as aₙ = a₁ × rⁿ⁻¹ .

The sum of n terms for this sequence is given as Sₙ = (rⁿ - 1)/(r - 1)

The given series is  400 + 200 + 100 + …

It is a geometric series.

Its first term is a₁ = 400.

And, common ratio is r = 200/400 = 0.5.

Now, the expression for the sum of n terms is given as below,

Sₙ = a(1 - rⁿ)/(1 - r)

Then, substitute the value of a₁, a₅ and n = 5 to obtain,

S₅ = 400(1 - 0.5⁵)/(1 - 0.5)

⇒ S₅ = 775.

Hence, the sum of first five terms of the given series is 775.

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(25 Points)Enter numbers to write 4.23×10^3 in standard notation.

Answers

10^3 = 1000, i.e. three 0's after the "1"

So the answer will be 4230

concert venue sells adult tickets for $15 and student tickets for $10 . Monday, a total of 85 tickets were sold, and the total money collected was $1,115 . How many adult tickets and how many student tickets were sold?

Answers

x=adult tickets and y=student tickets

x+y=85
15x+10y=1115

so now do a system of equations

(15x+15y=1275)-(15x+10y=1115)= 5y=160 so y=32 tickets

x+32=85 so x=53 tickets

53 adult tickets and 32 student tickets

A rectangular garden has length twice as great as its width. A second rectangular garden has the same width as the first garden and length that is 4 meters greater than the length of the first garden. The second garden has area of 70 square meters. What is the width of the two gardens?

Answers

The widht of the two gardens is 5metres by each
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