the table shows janisas scores in an archery tournament qualifying event. janisa needs a mean score of 8 to…

the table shows janisas scores in an archery tournament qualifying event. janisa needs a mean score of 8 to qualify for the archery tournament. how many points does she need on her last arrow to qualify for the tournament? janisa needs total points to have a mean score of 8. janisa has points so far. janisa needs to score points on her last arrow to qualify for the tournament.\n\njanisas scores\n10\n10\n8\n8\n3\n?

the table shows janisas scores in an archery tournament qualifying event. janisa needs a mean score of 8 to qualify for the archery tournament. how many points does she need on her last arrow to qualify for the tournament? janisa needs total points to have a mean score of 8. janisa has points so far. janisa needs to score points on her last arrow to qualify for the tournament.\n\njanisas scores\n10\n10\n8\n8\n3\n?

Answer

Explanation:

Step1: Calculate total points needed

There are 6 scores in total (5 known + 1 unknown). Mean score needed is 8. So total points needed is $8\times6 = 48$.

Step2: Calculate points so far

Add the 5 known scores: $10 + 10+8 + 8+3=39$.

Step3: Calculate score on last arrow

Subtract points so far from total points needed. $48 - 39=9$.

Answer:

Janisa needs 48 total points to have a mean score of 8. Janisa has 39 points so far. Janisa needs to score 9 points on her last arrow to qualify for the tournament.