Answer:
The range of a set of data is the difference between the highest and lowest values in the set
Step-by-step explanation:
Common difference d when The first term of an arithmetic sequence is 5, and the tenth term is 13 is 
Step-by-step explanation:
The first term a₁ = 5
The tenth term a₁₀ = 13
Find Common difference d=?
The formula used for arithmetic sequence is:

where aₙ = nth term
a₁= 1st term
d= common difference
Finding d:

So, Common difference d when The first term of an arithmetic sequence is 5, and the tenth term is 13 is 
Keywords: arithmetic sequence
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Answer:
2.133333
Step-by-step explanation:
He didn't simplify it
she should use 2 by 6
Step-by-step explanation:
2 divided by 6 will give 0.3 in 1d.p