Answer:
1,000,000
Step-by-step explanation:
Hi,
Let the score be x
average=sum of observations/no. of observations
20=16+19+23+x/4
20=58+x/4
20*4=58+x
80=58+x
80-58=x
x=80-58
x=22
To get at least 20, he should at least score 22 in his next quiz.
Hope this helps you.
Answers:
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Explanation:
Let's focus on the left side and try to transform it into the right side.
When comparing that last expression to the form , we see that:
Answer:
220
Step-by-step explanation:
we want to figure out Sum of the following series:
notice that, the nth term is equal to the sum of <em>all </em><em>the</em><em> </em><em>previous</em><em> </em>and the <em>nth</em> term , therefore the nth term of the sequence is <u>1</u><u>0</u><u> </u>. The sum of the sequence is equal to
see the following question for more information
since we've already figured out <em>n</em><em>=</em><em>1</em><em>0</em><em> </em>therefore substitute:
simplify parentheses:
simplify multiplication:
simplify division:
hence, the Sum of the series is <u>2</u><u>2</u><u>0</u>