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
Svet_ta [14]
4 years ago
15

PLEASE HELP ASAP! What is the r-value of the following data, to three decimal places?

Mathematics
2 answers:
Kobotan [32]4 years ago
5 0
A) Find the Sum of the X values: 4 +5+8+9+13 = 39

B) Find the Sum of the Y values: 23 +12 +10 +9 +2 = 56

C) Find the Sum of x^2: 4^2 + 5^2 + 8^2 + 9^2 +13^2 = 355

D) The sum of the Y^2's: 23^2 + 12^2 + 10^2 + 9^2 + 2^2 = 858

E) Sum of x *y's: 4*23 + 5*12 + 8*10 + 9*9 + 13*2 = 339

N = number of sets = 5

Numerator of r = (E - A*B/N) = 339-39*56/5 = 339 - 436.8 = -97.8

Denominator of r = SQRT(C-A^2/N) x SQRT(D-B^2/N) = 
SQRT(355-39^2/5) x SQRT(858-56^2/5) =
SQRT(50.8) x SQRT(230.8) =
7.1274 x 15.1921 =
108.2803

r = -97.8 / 108.2803

r = -0.903

 Answer is A

lions [1.4K]4 years ago
5 0

Answer: A -0.903****

You might be interested in
The price of a gallon of unleaded gas has dropped to
svet-max [94.6K]
2.86-2.81=0.05
(0.05/3.86)x100=1.75%
6 0
3 years ago
Is the underlined verb in the sentence regular or irregular?  We arrived early to our football game last night.   A. irregular  
lapo4ka [179]
Regular verb in that sentence
6 0
3 years ago
Read 2 more answers
Someone please help!!
steposvetlana [31]

Answer:

y-6 = -7x + 21

Step-by-step explanation:

Find the slope

(-8 - 6)/(5-3)

-14/2 = -7

Now find the formula

y-6=-7(x - 3)

y-6 = -7x + 21

Another way to write it is

y= -7x + 27

6 0
3 years ago
Lola's hockey team lost 15% of
MAVERICK [17]

Answer:

20

Step-by-step explanation:

Let x = games played in total

From the fact that 15\% of the games the team played is equivalent to 3 games, we can write:

15\%x = 3

x=3\div 15\%

=20

∴ Lola's hockey team played a total of 20 games.

Hope this helps :)

3 0
3 years ago
Anyone know this question
Vedmedyk [2.9K]
Answer is 70degree because if angle 1 is 70 then angle 2 also will be the same then it means even angle 3 will be 70.
HOPE IT HELPS :)
8 0
4 years ago
Other questions:
  • PLZ HLEP QUICK!!! Which of the following is an arithmetic sequence? -2, 4, -6, 8, ... -8, -6, -4, -2, ... 2, 4, 8, 16, ...
    7·2 answers
  • Suppose we want to write 2/5
    11·2 answers
  • Hey folks! I need some help with this exercise
    9·2 answers
  • Last Sunday an accident caused a traffic jam 12 miles long on a straight stretch of a two lane freeway. how many vehicles do you
    5·1 answer
  • The size of the new parking lot will be twice the size of the old parking lot. How many feet,x, was the old parking lot expanded
    14·2 answers
  • Matt is climbing a mountain when his elevation is higher than 1600 he has trouble breathing write an inequality that describes h
    15·1 answer
  • Jessica is baking a cake. The recipe says that she has to mix 96 grams of sugar to the flour. Jessica knows that 1 cup of this p
    6·2 answers
  • A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the
    14·1 answer
  • Can anyone please help me solve it<br>11,12 (1)(2)(3),13 this is all​
    13·1 answer
  • What is the distance between the following points?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!