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
stiv31 [10]
3 years ago
13

A teacher wants to know how much she can predict a student’s reading level from their grade level in given school district. The

table shows the grade and reading levels of eight students

Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0

Answer:

Step-by-step explanation:

x y xy x^2 y^2

     

7.1 7.1 50.41 50.41 50.41

6.2 6.2 38.44 38.44 38.44

10.3 10.3 106.09 106.09 106.09

4.5 4.5 20.25 20.25 20.25

9.7 9.7 94.09 94.09 94.09

8.3 8.3 68.89 68.89 68.89

7 7 49 49 49

6.4 5.5 35.2 40.96 30.25

Mean 7.4375 7.325 57.79625 58.51625 57.1775

     

Cov 3.3165625 r #DIV/0!  

r 0.987954244    

r^2 0.976053588  

The coefficient of determination r square is 97.60%

Hence 97.6% variation is explained by changes in grade level

Nearest answer is option b  

bogdanovich [222]3 years ago
5 0
I think the awnser to this question is c am i right?
You might be interested in
3) How many whole 3s are there inside of 4½?
tankabanditka [31]

Answer:

1

Step-by-step explanation:

There is one whole 3 inside of 4 1/2 or 4.5.

Multiples of 3 are 3x1=3   3x2=6....

Only a single whole 3 can be inside of 4.5.

5 0
2 years ago
Read 2 more answers
What is the volume of this object?
Nastasia [14]

Answer:

19

Step-by-step explanation:

(Assuming that each cube is 1 unit), the volume is 5 + 6 + 8 which equals 19

7 0
3 years ago
I have no idea what im doing
omeli [17]

Answer:

  • x = - 6

Step-by-step explanation:

A hole is an input value that makes both numerator and denominator equal to zero.

<u>Let's factorize the numerator and denominator:</u>

  • 3x² - 108 = 3(x² - 36) = 3(x + 6)(x - 6)
  • x² + 2x - 24 = x² + 6x - 4x - 24 = x(x + 6) - 4(x + 6) = (x - 4)(x + 6)

<u>We have same factor of x + 6:</u>

  • x + 6 = 0
  • x = - 6 is a hole
8 0
3 years ago
(Two wires with lengths of 48cm and 16cm are to be cut into pieces of all the same length without remainder Find the greatest po
anastassius [24]

The longest length you can get with no extra is 56cm

7 0
3 years ago
What does 9-20 equal
nordsb [41]
Did you mean 9 - 20 will if u did it equals up to -11
3 0
3 years ago
Other questions:
  • The simple interest x on an investment would take p dollars at an interest rate r or t years is given by x=prt. Find the time it
    7·2 answers
  • Suppose that 90% of all dialysis patients will survive for at least 5 years. In a simple random sample of 100 new dialysis patie
    9·1 answer
  • Which place value do you use to compare the numbers 145525 and 145552?
    13·2 answers
  • Lisa decided to start exercising. The first day he jogged 0.5 miles. The next day she plans to jog 0.1 more than the previous da
    8·2 answers
  • The tables given stretch for the linear functions f(x) and g(x). What is the input value for which f(x) and g(x) is true?
    6·1 answer
  • What is m&lt;2? and what ism&lt;4
    14·2 answers
  • Prove that the parallelogram circumscribing a circle is a rhombus<br>Match the​
    13·1 answer
  • Х<br> A number decreased by 4 is greater than 13.
    14·1 answer
  • Joanna, Mary, Betty, and Leah ran a race. Joanna's time was 13.03 seconds, Mary's was 13.284 seconds,
    11·2 answers
  • Match the pairs with equivalent expressions
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!