Answer:
Therefore the value is

Step-by-step explanation:
Given:
....Given
Step 1. Applying Distributive Property A(B+C)=AB+AC we get


Step 2. Add 15 both the side

Step 3. Dividing both the side by 9

Therefore the value is

Answer:This is mutually exclusive
P(A) = 1/5
P(B) = 7/20
The formula is P= P(A)+P(B)
P = 1/5+7/20= 11/20
Step-by-step explanation:
A number - n
five times the number - 5n
nine more than five times the number - 5n+9
The answer is D.
Answer:

Step-by-step explanation:
Given

Required
Determine the solution
Since b is a perfect square, the equation can be expressed as:

Apply difference of two squares:

Split:

Remove brackets:

Make a the subject in both equations

The solution can be represented as:

Answer:
Measures of variability would describe how the central tendency is influenced by the data. Since the central tendency is the tendency of data values to cluster around some central value, then measures of variability would show how strong the central tendency is.
Hope this helps!