Answer:
Menerals are the substance which are found on the surface of the earth.
Explanation:
Menerals heardness means the menerals getting hard .
Answer:
The mean deviation is<u> 5</u>
Explanation:
n=20
n=20∑x=100
n=20∑x=100xˉ=∑x/n =100/20=5
hope it helps you!!!
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