Answer:
your answer would probably be 20 bc I times 5 then times 2 then I got 10. Then I did 10 X 2 and I got 20
Answer:

Step-by-step explanation:
- The sum of exterior angles of a polygon is equal to 360 degrees

Answer:
In the episode pertaining to the discovery of radium, it is false that all of the hypotheses turned out to be true.
There are some hypotheses in the episode thay turned out to be false.
Answer:
-7°C
Step-by-step explanation:
Freezing point of water = 0°C
By adding salt, freezing point lowers by 7°C ;
The freezing point of salt water can be expressed as ;
Since temperature lowers :
Freezing point of salt water :
Freezing point of water - 7°C
0°C - 7°C
= - 7°C