Write an explicit rule for each geometric sequence i’m subscript notation. Use a calculator and round your answer to the nearest
tenth if necessary.
(Show how you did it please, I don’t understand what I’m supposed to do)
16) The fifth term of the sequence is 5. The sixth term is 22.5.
17) The third term of the sequence 120. The fifth Term is 76.8 .
18) The fourth term of the sequence is 216. The sixith term is 96.
(Show how you did it please, I don’t understand what I’m supposed to do)
16) The fifth term of the sequence is 5. The sixth term is 22.5.
17) The third term of the sequence 120. The fifth Term is 76.8 .
18) The fourth term of the sequence is 216. The sixith term is 96.
1 answer:
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So we know that an average is the sum of the scores divided by the number of scores that were added together. In this case we are going to be dealing with 4 tests. So let's say x is the score for our fourth test. We can create this equation:
So then we need to simplify the top:
Then multiply by 4 on both sides to get rid of the denominator:
Then solve for x:
So now we know that Sam needs to score a 67 on the fourth test to have an average score of 50.