Answer:
15
Step-by-step explanation:
Answer:
1y
Step-by-step explanation:
Answer:
provides information about the strength of a relationship
Step-by-step explanation:
A numerical measure of strength in the linear relationship between any two variables is called the Pearson's product moment correlation coefficient.
The co efficient of correlation is a pure number denoted by r , independent of the units in which the variables are measured that can range from+1 to -1 .
The sign of r indicates the direction of the cor relation.
When r= 0 it does not mean that there is no relationship . For example if the observed values lie exactly on a circle , there is a relationship between variables but r = 0 as r only measure linear cor relation.
The 2nd statement given is the correct answer.
It is not related to ordinal or nominal properties and it does show direction.
Answer:
x = 4
Step-by-step explanation:
To begin, first find Angle SUT.
Knowing that SUH is a straight line, Angle SUT plus 100 degrees should equal 180 degrees. Angle SUT is 80 degrees.
The sum of all the degrees in a triangle is also 180 degrees.
SO
(4x + 4) + (21x - 4) + 80 = 180
25x + 80 = 180
25x = 100
x = 4
Answer:
x = 3.24, x = -1.24
Step-by-step explanation:
The standard form for a quadratic equation is . For your equation a = 1, b = -2, c = -4. The quadratic formula you will be using is .
Plug in a = 1, b = -2, and c = -4 into the formula.
We'll do the top part first:
Apply rule
Apply exponent rule if is even
Multiply the numbers
Add
The prime factorization of 20 is
20 divides by 2. <em>20 = 10 * 2</em>
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10 divides by 2. <em>10 = 5 * 2</em>
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2 & 5 are prime numbers so you don't need to factor them anymore
Apply radical rule
Apply radical rule ;
Because of the you have to separate the solutions so that one is positive and the other is negative.
Positive x:
Apply rule
Multiply
Factor and rewrite it as . Factor out 2 because it is the common term. .
Divide 2 by 2
or (You'll probably have to use a calculator for the square root of 5)
^Repeating the process of positive x for negative x in order to get or