Step-by-step explanation:
1/20-1/4 ×<1/5-2/5×
<h3>collection of like terms</h3>
1/20+1/5 <-2/5×-1/4×
<h3>= 1/4 <-13/20×</h3>
Answer:
The perimeter of room is 
Step-by-step explanation:
We are given the following in the question:
The length and width of a room are measured with uncertainties.
There is uncertainty of 0.1 m in each measurement.
Length = 
Width = 
Formula:
The perimeter of room is given by:

The uncertainties are also added and multiplied.
Thus,the perimeter of room is 
Answer:
Step-by-step explanation:
The last one
I hope I helped you.


Coordinates of the point C is: (-4.1, -2.5)