here are the results from Stacey's last five quizzes
Quiz right Wrong
1-------->4------------>1
2-------->16----------->4
3-------->20----------->5
4-------->16----------->4
5-------->20----------->5
on the sixth quiz, Stacey got 3 questions wrong if she followed the same pattern like on the first five quizzes how many question's did Stacy get right
A.8
B.10
C.11
D.*12*
please help
Did you end up getting the answer? :’(
To find out how many questions Stacey got right on the sixth quiz, we need to first analyze the pattern in her previous quiz results.
From the given results, we can see that in each quiz, Stacey got a certain number of questions right and a certain number wrong. Let's calculate the average number of questions she got right and wrong in the first five quizzes:
Total questions right = 4 + 16 + 20 + 16 + 20 = 76
Total questions wrong = 1 + 4 + 5 + 4 + 5 = 19
Average questions right = Total questions right / Number of quizzes = 76 / 5 = 15.2
Average questions wrong = Total questions wrong / Number of quizzes = 19 / 5 = 3.8
Now, since Stacey gets an average of 15.2 questions right and 3.8 questions wrong in each quiz, we can assume that this pattern will continue in the sixth quiz. Since she got 3 questions wrong on the sixth quiz, we can subtract this from the total average questions right:
Average questions right - Questions wrong = 15.2 - 3 = 12.2
Therefore, Stacey got approximately 12 questions right on the sixth quiz.
Hence, the correct answer option is D. 12.