Answer choice D. In order to find the r value, you need to find the degrees of freedom (df). df = n -2. In this case then the degrees of freedom is 9 (11 - 2). Now you use the df, the significance value (also known as p-value), and the critical value table (search it up if you don’t have one) to find that with a df of 9 and a probability value of 0.01, the r = 0.735.
The reason for why the answer is not “A” is due to the fact that we’re finding all of the possible r values, we are not a evaluating r to see whether or not it is significant.
Answer:
Option A)
Step-by-step explanation:
We are given the following in the question:
Roots of quadratic equation are:
The sum of the roots and the product of the roots can be calculated as:
Standard form of quadratic equation:
Putting values, we get,
is the required quadratic equation.
Thus, the correct answer is
Option A)
Answer:
D
Step-by-step explanation:
brainliest plz x I got the same question and I got it right
Answer:
A is true and B is false.
Step-by-step explanation:
x + 6.2 ≥ 10.9
Replace x for 4.7...
4.7 + 6.2 ≥ 10.9
10. ≥ 10.9 ( So this is true!)
x - 6.2 ≤ - 5
Replace x for 4.7...
4.7 - 6.2 ≤ -5
-1.2 is not ≤ -5 (So this is false!)
