I don’t understand 9) PLEASE HELP!!! The line y=2.5x-7

I Dont Understand 9) PLEASE HELP!!! The Line Y=2.5x-7

Answers

Answer 1
The residual of a line is the observed Y value (the numbers in the table) minus the actual value (the Y value you get when you plug in the X value into the equation)... This question is asking you to find the residuals of all the points, square them, and add them... 

For example, the observed Y value for -4 is -15. When you plug in -4 into the equation, you get this: 

2.5x-7
2.5(-4) -7
-10 -7
=-17

The observed Y val. is -15, while the actual (equation) one is -17. -15 -(-17) is 2. 2^2 = 4

Do this process for all of the points, the add up the squared residuals, and you'll be done! 

Hope this helped!


Related Questions

A triangle has two sides of length 2 and 17. what is the smallest possible whole-number length for the third side?

Answers

The distance between 17 - 2 is = 15, so 16 would be the smallest possible whole number length for the third side.

A sequence is defined recursively by the formula f(n + 1) = f(n) + 3 . The first term of the sequence is –4. What is the next term in the sequence?

Answers

Answer:

the next term is -1

Step-by-step explanation:

A sequence is defined recursively by the formula

[tex]f(n + 1) = f(n) + 3[/tex]

The first term of the sequence is –4.

When n=1 then f(1)=-4

Now we find out the next term

We need to find f(2)

To find f(2) plug in 1 for n in the recursive formula

[tex]f(n + 1) = f(n) + 3[/tex]

[tex]f(1 + 1) = f(1) + 3[/tex]

f(1) is -4

[tex]f(1 + 1) = -4 + 3[/tex]

[tex]f(12) =-1[/tex]

So the next term is -1

Answer:

b. -1

Step-by-step explanation:

What two numbers have the product of -135 and the sum of 6?

Answers

Step 1: Find factors of 135 

1 and 135
3 and 45
5 and 27
9 and 15

Remember the rules for multiplication involving negatives:

Multiplying a negative with a negative will always be positive.
Multiplying a negative with a positive will always be negative. 

So in order for the product to be -135, one number of each factor pair will need to be negative. 

Step 2: Figure out which factor pair will add together to get the sum of 6
(Remember at least one from each pair will be negative)

Part A: 
1 + (-135) = -134
3 + (-45) = -42
5 + (-27) = -22
9 + (-15) = -6

Part B:
135 + (-1) = 134
45 + (-3) = 42
27 + (-5) = 22
15 + (-9) = 6

(Knowing that the sum of adding a larger negative number to a smaller positive number will be negative, will make this a bit faster because you would just skip to Part B) 

The sum of 15 and -9 is 6. So there is the answer.

You can also check it, just to make sure it's the correct answer.

15 × (-9) = -135
15 + (-9) = 6

Is this right? Domain and range of a function

Answers

You have the correct domain. The value x = 4 is the smallest value allowed in the domain. Any smaller and the radicand (stuff under the square root) will be negative. 

Nice work on getting the correct answer. 

Which conjunction or disjunction is equivalent to the this inequality?
5-3 |p+4| <= -10

p + 4 ≤ 5 AND p + 4 ≥ -5
p + 4 ≤ 5 OR p + 4 ≥ -5
p + 4 ≥ 5 OR p + 4 ≤ -5
p + 4 ≥ 5 AND p + 4 ≤ -5

Answers

(5 - 3) |p + 4| ≤ - 10

=> (2) |p + 4| ≤ - 10

=> | p -4 | ≤ 10 / 2

=> | p - 4 | ≤ 5

=> (p + 4) ≤ - 5 and -(p+4) ≤ - 5

- (p + 4) ≤ - 5 is equivalent to p + 4 ≥ 5

So, the answer is p + 4 ≤ - 5 and p + 4 ≥ 5. That is the fourth option
p + 4 ≥ 5 AND p + 4 ≤ -5.

Factor the expression completely over the complex numbers.

x4−625

Answers

your factoring answer is: (x^2+25)(x+5)(x-5)


Factor. 2xy+5x−12y−30

Answers

2xy + 5x -12y -30
x(2y + 5)  - 6( 2y + 5)
(2y+5) (x-6)

this is the anwser to your problem

(2y+5)(x-6)

Graph the system of constraints and find the value of x and y that maximize the objective function.

Answers

We want to maximize C, which is C= 7x - 3y. Let's explore our intuition regarding how this will look. We know that both y and x are greater than or equal to zero, which means -3y will be a negative number (or 0) and x is a positive number (or 0). We want to get x as big as possible, given the constraints, we want y to be zero, if possible 

We see that, based on the constraints, y is greater than or equal to zero, but it has no other minimum value established. We only know that y and x add up to 5, and that y is less than or equal to (1/5)x + 2. That means y could be 0 and still satisfy the constraints. 

In order to maximize C, we want to be 5 as possible and y to be zero:

C = 7 (5) - 3(0)

C=35

Answer: Solving Systems Using Matrices Quiz Part 1

1. c) (5,0)

2. a) 20 of type A; 20 of type B

3. d) no solution

4. a) -5

5. d) 11 -12 7 5 12 -7

6. a) (-6,8)

solve
5t < -15
^^^(the < sign has a line underneath along with the answers)
A. t > 3
B. t < 3
C. t > -3
D. t < -3

Answers

the answer is D. t<-3 because a number like -10 is less than -3. plug in a -10 for t and you would get -50<-15 which is true

When seven times a number is decreased by 66​ the result is 50. what is the​ number?

Answers

The number would be 24

Can someone please graph this equation? 5-8x =16-8x

Answers

First, we need to isolate x. We can do this by using inverse operations.

5 - 8x = 16 - 8x
Add 8x to both sides.
5 + 0 = 16
5 = 16

This line is not possible to graph.

Share £24 in the ratio 3:5

Answers

3:5.....added = 8

3/8(24) = 72/8 = 9 <=
5/8(24) = 120/8 = 15 <=
3 + 5 is the whole so multiply the pieces by the whole:

3/8 * 24 = 9
5/8 * 24 = 15

Hope this helps!

What is descriptive statistics and inferential statistics?

Answers

Descriptive statistics uses data to provide descriptions of populations. Often this data is represented in the form of tables, charts, graphs, or even just numbers. Here, we organize (visual representation) and analyze data to describe a population.

Inferential statistics utilizes data in such a way that allows us to make predictions, generalizations, and inferences about a population from samples taken. Here, we can compare, predict, and test data in order learn about a population.

Hope this helps.

Descriptive statistics is a one type of statistics which involve generalization of conclusions from small selected samples.

Inferential statistic is atype of statistic which involve summarization of data in numerical form.

(c)100 pts Mrs. Carothers looked at another hotel. She waited a week before she decided to book nights at that hotel, and now the prices have increased. The original price was $1195. The price for the same room and same number of nights is now $2075. What is the percent increase? Round to the nearest whole percent. Explain and Show your work.

Answers

2075 - 1195 = 880
880 / 1195 * 100
= 73.64
= 74% (Round to the nearest whole percent)

it's increased 74%
2075-1195=880
(880/1195)×100=73.64%

Which value is equivalent to x+4/4+x

Answers

Answer:

Step-by-step explanation:

Alright, lets get started.

Given that:

[tex]\frac{x+4}{4+x}[/tex]

Using commutative property, 4+x = x+4,

so

[tex]\frac{x+4}{x+4}[/tex]

Both numerator and denominator has same value, hence they could be cancelled.

So,

[tex]\frac{x+4}{x+4} = 1[/tex]

Hence the answer is 1 :   Answer  

Hope it will help :)

Answer:

c

Step-by-step explanation:

the answer is 1

A fireworks company has two types of rockets called Zinger 1 and Zinger 2. The polynomial -16t2 + 150t gives the height in feet of Zinger 1 at t seconds after launch. The polynomial -16t2 + 165t gives the height of Zinger 2 at t seconds after launch. If the rockets are launched at the same time and both explode 6 seconds after launch, how much higher is Zinger 2 than Zinger 1 when they explode?

Answers

Substitute the value t = 6 into both equations in turn

f(Z₁) = -16t² + 150t
f(6) = -16(6)² + 150(6)
f(6) = -16(36) + 900
f(6) = 324 feet

f(Z₂) = -16t² + 165t
f(6) = -16(6)² + 165(6)
f(6) = 414 feet

The height of Zinger 2 minus the height of Zinger 1 = 414 - 324 = 90 feet

Answer: Zinger 2 is 90 feet higher than Zinger 1

The graph shows the value of a car at different years after Joanna purchased it.

Which answer is the best estimate for the average rate of change between Year 9 and Year 14?



−$75/year
−$130/year
−$250/year
−$325/year

Answers

Answer:

the answer is 130 year.

Step-by-step explanation:


Answer:

I can verify that this answer is correct!

Why would someone choose to use a graphing calculator to solve a system of linear equations instead of graphing by hand? Explain your reasoning.

Answers

Sample Response: A graphing calculator is more accurate than graphing by hand. If the slope and/or y-intercept is a fraction or decimal, it is more difficult to accurately graph by hand. Using a calculator might also be more time efficient because it might accept a line in any form. A calculator’s window can be adjusted quickly instead of having to redraw a graph by hand when adjusting the scale.

For time efficiency and to get a more precise solution.

Why a graphing calculator is better than graphing by hand?

There are two reasons.

1) In a graphing calculator you only need to input the functions and that's all, it will graph the functions for you, so it needs a lot less time than graphing by hand.

2) When you graph by hand, there is a limit in how much of an exact solution you can get (and there may be a mistake if the line is to thick or something like that). While in a graphing calculator you can find the exact point where the graphs intersect, so you will get a more precise solution with a graphing calculator.

These are the two reasons why using a graphing calculator may be better than graphing by hand.

If you want to learn more about systems of equations, you can read:

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Find the product. Estimate to check if ur answer is reasonable

538 × 46=

Answers

538 x 46 = 2,168. If estimated needed it's 2,200 or 2,170
Hopefully it's the right answer.

Mattie,Joel,and Oscar each ate 325 calories at lunch each day for 18 days.About how many calories did they eat in all

Answers

First you have to multiply
[tex]325 \times 3[/tex]
which equals 975

Next, you multiply that by 18
[tex]975 \times 18[/tex]
The answer is 17559
[tex]17559[/tex]

3(x+y)=y, if (x,y) is a solution to the equation above and y cannot equal to zero what is the ratio x/y

Answers

*Given
3(x+y)=y
y is not equal to zero

*Solution 

1. The given equation is 3(x+y) = y and we are tasked to find the ratio between x and y. Distributing 3 to the terms in the parenthesis, 

                        3(x+y) = y
                      3x + 3y = y

Transposing 3y to the right side OR subtracting 3y from both the left-hand side and the right-hand side of the equation would give

                              3x = -2y

Dividing both sides of the equation by 3, 

                                x = (-2/3)y

Dividing both sides of the equation by y, 

                              x/y = -2/3

Therefore, the ratio x/y has a value of -2/3 provided that y is not equal to zero. 
                             


The ratio, x/y in the equation, if y ≠ 0 is: x/y = -2/3.

What is the Solution of an Equation?

Solution of an equation is the value of a variable or two variables that makes an equation true.

Given:

3(x+y)=y

We are required to find the ratio, x/y if y ≠ 0.

Thus:

3(x+y)=y

Open bracket

3x + 3y = y

Subtract 3y from both sides

3x = y - 3y

3x = -2y

Divide both sides by 3

x = -2y/3

Divide both sides by y

x/y = -2/3

Therefore, the ratio, x/y in the equation, if y ≠ 0 is: x/y = -2/3.

Learn more about the solution of an equation on:

https://brainly.com/question/13729904

How do I prove the corresponding angles theorem?

Answers

Final answer:

The corresponding angles theorem states angles in matching corners are equal when two parallel lines are intersected by a transversal. To prove this, use properties of parallel lines and transversals, and various established theorems. Euclidean postulates are employed, rather than the Pythagorean theorem or trigonometry.

Explanation:

To prove the corresponding angles theorem, one must understand that when two parallel lines are intersected by a transversal, the angles in matching corners are equal. These are called corresponding angles. For instance, suppose you have two parallel lines L1 and L2, and a transversal T that intersects them at points A and B respectively. The angle ∠PAB on line L1 would correspond to angle ∠QBA on line L2, and they would be equal.

To provide a mathematical proof, one would typically use properties of parallel lines and transversals, or other established theorems such as the alternate interior angles theorem or the exterior angle theorem. By proving all these other angles are equal due to their relationships with each other (alternate interior, consecutive interior, alternate exterior angles, etc.), one can by default establish that corresponding angles must also be equal.

Proof of this theorem often involves constructing supplementary and congruent angles and using the postulates of Euclidean geometry. The Pythagorean theorem and trigonometry need not be involved in this proof unless one is working with right triangles formed by the transversal and the parallel lines, or if dealing with more complex geometric problems.

Michaela climbed up a mountain at an Average speed of 3 mi/h. She climbed down at an average speed of 5 mi/h. What is Michaela's average speed for the entire trip? Round to the nearest tenth

Answers

                RT avg = 2*3*5/(3+5) = 30/8 mi/hr
= 3.75 mi/hr                   
Final answer:

To find Michaela's average speed for the entire trip, we need to calculate the total distance traveled and the total time taken. The average speed can be calculated as (2D) / (D/3 + D/5), which is approximately 3.53 mi/h.

Explanation:

To find Michaela's average speed for the entire trip, we need to calculate the total distance traveled and the total time taken.

Let's assume the distance she climbed up the mountain is D. The distance she climbed down is also D since she retraced her steps. The average speed for climbing up is 3 mi/h and the average speed for climbing down is 5 mi/h.

The total distance is 2D and the total time is D/3 + D/5. Therefore, the average speed can be calculated as (2D) / (D/3 + D/5).

Simplifying this expression gives us the average speed as 3.53 mi/h (rounded to the nearest tenth).

Help pleaseeeeeeeeeeeeeeeeeeeeeee

Answers

So, I drew a diagram, and the angles appeared in the following order of size: ∠B,∠A,∠C. Hope this helped!

A rectangular sandbox has a width of 5 feet. The sandbox is 5 times as long as it is wide. what is the perimeter of the sandbox?

Answers

5+25+5+25 or 5x2+25x2
5*5=25

25+25+5+5=60

Perimeter= 60ft

Hope this helps you out! Have an AWESOME rest of your day!

What is the answer to this math problem below:

Answers

the answer is 5/6 or 0.83
okay so first you flip one fraction and multiply
x+8/2 * 5/3x+24
then simplify
3x+24 = 3(x+8)
now cancel like terms
(x+8 cancels) / 2 * 5 / 3 (x+8 cancels)
you are left with
2*5/3 
10/3
or 3 1/3

John surveyed 30 members of a country club. He found that 9 members had signed up for tennis.

What is the experimental probability that the next member surveyed will sign up for tennis?
A.
0.3
B.
0
C.
0.7
D.
1

Answers

The experimental probability that the next member surveyed will sign up for tennis is 0.3, based on the current data where 9 out of 30 members have signed up.

The question is asking for the experimental probability that the next member surveyed at the country club will sign up for tennis based on a survey of 30 members where 9 had already signed up for tennis.

To calculate the experimental probability, you divide the number of members who have signed up for tennis by the total number of members surveyed. So, the calculation would be:

Number of members who signed up for tennis: 9Total members surveyed: 30

The experimental probability is then calculated as 9/30, which simplifies to 0.3. Therefore, the correct answer is:

A. 0.3

what formula can be used to describe the sequence ?

Answers

I think this is the 3 one... can i have brainliest?
Answer:

The  formula which can be used to describe the sequence is:

                [tex]f(x+1)=2f(x)[/tex]

Step-by-step explanation:

The sequence is given by:

         [tex]-2\dfrac{2}{3},-5\dfrac{1}{3},-10\dfrac{2}{3},-21\dfrac{1}{3},-42\dfrac{2}{3},.....[/tex]

The terms of the sequence could also be written as:

[tex]\dfrac{-8}{3},\dfrac{-16}{3},\dfrac{-32}{3},\dfrac{-64}{3},\dfrac{-128}{3},....[/tex]

This means that the first term of the sequence is:

[tex]f(1)=\dfrac{-8}{3}[/tex]

The second term of the sequence is:

[tex]f(2)=\dfrac{-16}{3}\\\\i.e.\\\\f(2)=2\times \dfrac{-8}{3}\\\\i.e.\\\\f(2)=2f(1)[/tex]

[tex]f(3)=\dfrac{-32}{3}\\\\i.e.\\\\f(3)=2\times \dfrac{-16}{3}\\\\i.e.\\\\f(3)=2f(2)[/tex]

and so on.

                 Hence, the formula is given by:

           [tex]f(x+1)=2f(x)[/tex]

is the function f(x)=4-7x^5 a polynomial function? if so state its degree and leading coefficient

Answers

Answer:

Degree would be 5 and leading coefficient is -7

Step-by-step explanation:

To identify the leading look for the number with the biggest power. The degree is the power and the leading is the main number.

Final answer:

Yes, the function f(x) = 4 - 7x^5 is a polynomial function with a degree of 5 and a leading coefficient of -7.

Explanation:

Yes, the function f(x) = 4 - 7x5 is a polynomial function.

A polynomial function is a function where the variable (x) is raised to a non-negative integer power and multiplied by coefficients. In this case, x is raised to the power of 5 which is a non-negative integer.

The degree of a polynomial function is the highest power of the variable. In this case, the degree of the function is 5.

The leading coefficient is the coefficient of the term with the highest power of the variable. In this case, the leading coefficient is -7.

Learn more about Polynomial function here:

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Find the measure of <1 https://dlap.gradpoint.com/Resz/~Oiy9AAAAAAAalw2BXk3OdA.9zC7krSp46P2biI_hAq6AC/213679,9DE,0,0,0,0,0/Assets/testitemimages/geometry_b/area/mc050-1.jpg

Answers

The measure of angle 1 is 60* since it is 1/6 of 360*.
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