Answer:

Step-by-step explanation:
Given: expressions
To find: expression that denotes a rational number
Solution:
A number of the form
where p and q are integers and
is said to be a rational number.
Sum of a rational and irrational number is irrational.
In
,
is a rational number and
is an irrational number
So,
is not a rational number.
In
,
is an irrational number and 4 is a rational number
So,
is not a rational number.
In
,
is a rational number
So,
is a rational number
In
,
is a rational number and
is an irrational number
So,
is not a rational number.
Answer:
mitochondria
Step-by-step explanation:
Answer:
b and c
Step-by-step explanation:
3, because a negative number multiplied by another negative number (in this case, itself) will always be a positive number.
22,5
Step-by-step explanation:
45 :2 = 22,5 mark me plz thanks