Answer:
Step-by-step explanation:
Discrete Variables can meaningfully have only specific values:
Number of coin flips: 4.
Number of books published: 2.
Distance walked, rounded to the nearest kilometer: 3
(Must be rounded up or down)
divide total miles by time:
220 / 3.5 = 62.857
rounded to nearest tenth = 62.9 miles per hour
(x-1)(x+1)(x-3)(x+3)
x²-y² formula
Mark brainliest please
Answer: 
-3 times the square root of 5
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Explanation:
Let 
Replace all the root 5 terms with x and we go from

to

From here, combine like terms to get

and the last thing to do is replace the x with sqrt(5)

Meaning that,

