1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WARRIOR [948]
3 years ago
11

HELP!!! I NEED HELP PLZ!!!

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0
1.
A. 1
B. 6
C. 5
-6+-(square root) 6^2-4(1)(5)
Over 2(1)
You might be interested in
Raquel throws darts at a coordinate grid centered at the origin. Her goal is to create a line of darts. Her darts actually hit t
lora16 [44]

Answer:

The line of best fit

y = 0.633x + 0.561

Step-by-step explanation:

The coordinates that the dart hit include

(–5, 0), (1, –3), (4, 5), (–8, –6), (0, 2), and (9, 6)

The x and y coordinates can be written as

x | y

-5|0

1 | -3

4|5

-8|-6

0|2

9|6

So, running the analysis on a spreadsheet application, like excel, the table of parameters is obtained and presented in the first attached image to this solution.

Σxᵢ = sum of all the x variables.

Σyᵢ = sum of all the y variables.

Σxᵢyᵢ = sum of the product of each x variable and its corresponding y variable.

Σxᵢ² = sum of the square of each x variable

Σyᵢ² = sum of the square of each y variable

n = number of variables = 6

The scatter plot and the line of best fit is presented in the second attached image to this solution

Then the regression analysis is then done

Slope; m = [n×Σxᵢyᵢ - (Σxᵢ)×(Σyᵢ)] / [nΣxᵢ² - (∑xi)²]

Intercept b: = [Σyᵢ - m×(Σxᵢ)] / n

Mean of x = (Σxᵢ)/n

Mean of y = (Σyᵢ) / n

Sample correlation coefficient r:

r = [n*Σxᵢyᵢ - (Σxᵢ)(Σyᵢ)] ÷ {√([n*Σxᵢ² - (Σxᵢ)²][n*Σyᵢ² - (Σyᵢ)²])}

And -1 ≤ r ≤ +1

All of these formulas are properly presented in the third attached image to this answer

The table of results; mean of x, mean of y, intercept, slope, regression equation and sample coefficient is presented in the fourth attached image to this answer.

Hope this Helps!!!

7 0
3 years ago
Omg plsss someone help i rly don't get this question!!! TYY
finlep [7]
Ok sorry but I see someone is online can you help
With a science question
4 0
3 years ago
Read 2 more answers
Which expression is equivalent to -3(4c-2) -2c
sergeinik [125]

Answer:

-3(4c-2) -2c = -14c+6

Step-by-step explanation:

We need to find the equivalent expression for -3(4c-2) -2c.

First we open the brackets as follows :

-3(4c-2) -2c

= -12c+6-2c

=-12c-2c+6

=-14c+6

So, the equivalent expression is -14c+6.

7 0
3 years ago
The simplest from ratio for 27/45
Tems11 [23]
Both 27 and 45 have the greatest common factor of 9, so divide the numerator and the denominator by 9 to get the simplest form.
27/45 = 3/5
3/5 is the simplest ratio
3 0
3 years ago
Read 2 more answers
What is the product in simplest form?<br><br><br> −89⋅56
kari74 [83]
The product would be -4984.
3 0
3 years ago
Read 2 more answers
Other questions:
  • How do you subtract an integer from another integer without using a number line or counters? Give an example.
    9·1 answer
  • Suppose that y varies inversely with x. write an equation for the inverse variation.y = 2 when x = 3
    8·1 answer
  • Ken’s predicted temperature for April is 7ºC. His prediction for May is 2ºC higher than April. He used the number line to solve
    8·2 answers
  • What is the value of x?​
    15·1 answer
  • Please help ASAP I have only one more try 20pts and brainliest
    15·2 answers
  • Which Question Has roots of x= -2 and x
    12·1 answer
  • Approximate the sum of the convergent infinite series the least usingnumber of terms so that the error is less than .0001. What
    9·1 answer
  • How do I do this I don’t get it at all
    9·2 answers
  • What is the value of x when f(x) =0
    11·1 answer
  • Help plssssssssssssssssssss
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!