Answer:
96 marks
Step-by-step explanation:
We know that the mean of a given amount of values is the sum of the values divided by the number of values
Let the marks in the fourth test = x marks
Mean of the values = 90
(85 + 90 + 89 + x) / 4 = 90
264 + x = 360
x = 96
Therefore, Jamie needs 96 marks in her 4th test to get a mean score of 90
Answer:
65.5
Step-by-step explanation:
I just took the assignment on edge. Good luck
Answer:
$1522
Step-by-step explanation:
M = 7 + 3*J
M = 7 + 3*505
M = 7 + 1515
M = 1522
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