We know, shortest distance between two points
and
is :

So, distance between house and library is :

Distance between library and post office :

Distance between post office and house :

Therefore, minimum distance that you can ride your bike is (5.39+7.07+7) km = 19.46 km.
Hence, this is the required solution.
No.
A scalene triangle is one with no sides equal.
An equilateral is one with the three sides equal.
So a scalene triangle can not be equilateral.
Answer:
Troposphere
Step-by-step explanation
contains the air we breath and is often reffered to as the lower atmosphere
4+(−7) is 7 units from 4, in the negative direction (that is, to the left of 4)