45.3+3.21=48.51 which is greater than,its important to add the decimals because u would never know with what number your working with on decimal occasions.
Answer: 4 centimeters is the mode
Step-by-step explanation: Mode is the number that comes out the most, and 4 comes out 6 times, which is the most.
ANSWER
The two lines are perpendicular if 
EXPLANATION
Given two lines:

and

We can tell wether these two lines are perpendicular to each other using their slopes.
If the product of their slopes is -1, the then the two line are perpendicular.
For example:
The line

has slope

and the line

has slope

The product of the two slopes is

This implies that:

Therefore the two lines are perpendicular.
Answer:
4000 and 7000
Step-by-step explanation: