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Mathematics
18.01.2023 07:27
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Kathy s average score after 3 math quizzes was 83. Her score on the 4th quiz was

Kathy's average score after 3 math quizzes was 83. Her score on the 4th quiz was 87. If all 4 of the quizzes are weighted equally, which of the following is closest to her average score after 4 quizzes?
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Nepnep682
Nepnep682
4,4(2 marks)

84

Step-by-step explanation:

Pretend her first 3 quizzes were all 83 since that was the average. So the 4th was 87.

83+83+83+87 = 336

Divide by the total number of quizzes because they are equally weighted.

336/4 = 84

Her new average score is 84.

mati7itam
mati7itam
4,5(36 marks)

28t-140y

step by step explanation:

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