Answer:
None of them are irrational.
Step-by-step explanation:
An Irrational Number is a real number that cannot be written as a simple fraction.
Therefore:
-4 can be written as -4/1
2/9 is already in fraction
8.26 can be written as 826/100
11 can be written as 11/1
None of them are irrational.
However numbers like 
are irrational as they can not be represented as fractions.
Answer:
5
Step-by-step explanation:
n + m -2(m-m)
Combine like terms
n+m+2(0)
n+m
Let m=3 and n=2
2+3
5
Answer:
1,496.49 cm squared
Step-by-step explanation:
The regular figure below is a hexagon.
The formula for the area of a regular hexagon is 
. Here a = 24. Substitute and simplify for the area.
Step-by-step explanation:
circumference= 3.142*diameter
Diameter of main Street park is 30
Diameter of uptown park is 16
3.142*30=94.26
3.142*16=30.272
94.26-30.272=43.988
round off to tenth =44.0km
