CAN SOMEONE HELP ME WITH THIS?
1 answer:
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1. nth term=3n-1
20th term=3(20)-1=60-1=59
2. nth term=-2n-4
20th term=-2(20)-4=-40-4=-44
3. nth term=n-
20th term=(20)-
=
-
=
4. nth term=-n+
20th term=-(20)+
=-
+
=-
Solution: We know that:
Paul and Brett went to math class and were given the same expression to simplify. The expression they were given was 6 + 12 divided by 2(3) + 1.
Looking at the solution's by Paul and Brett, we clearly see that the Paul made a mistake at step 3.
6 + 12 ÷ 2(3) + 1
6 + 12 ÷ 6 + 1 Correct
18 ÷ 6 + 1 Incorrect It should have been 6 + 2 +1
According to order of operation's rule, division needs to done before addition.
Therefore, solution by Paul carries a mistake, while the solution by Brett is correct.
