The two what? This question needs more context
Answer:
What Is Mass? Mass is a constant unit of the amount of matter an object possesses. It stays the same no matter where the measurement is taken. The most common units for mass are the kilogram and gram.
Step-by-step explanation:
The different is that 21 is going ALL the way down to 21 while 4 is only going to 4..
Answer:
The variance of the measure of productivity = 141.67(to 2 d.p)
Step-by-step explanation:
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The answer is =, because in addition, it doesn't matter what order you add things in, it comes out the same.