Answer:
The distance between x and y on the number line is 2x
Step-by-step explanation:
we know that
If y is the opposite of x
then

The distance between x and y is equal to


Answer:
number of bacteria
Step-by-step explanation:
given as :
The Number of Bacteria in 2 L of water = 
∵ 2 L of water have =
number of bacteria
So 1 L of water have =
number of bacteria
∴ 5 L of water have =
× 5 number of bacteria
=
number of bacteria
Hence in 5 L of water ,
number of bacteria available Answer