if X is the mean of the first 8 positive integral multiples of 9 & Y is median of the same numbers, find the value of 5X-3Y About the author Valentina
Answer: 81 Step-by-step explanation: First 8 positive integral multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72 their mean is 40.5 = x median is 40.5 = y = 5(40.5) – 3(40.5) = 202.5 – 121.5 = 81 Therefore, the value of 5x – 3y is 81. Reply
Answer:
81
Step-by-step explanation:
First 8 positive integral multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72
their mean is 40.5 = x
median is 40.5 = y
= 5(40.5) – 3(40.5)
= 202.5 – 121.5
= 81
Therefore, the value of 5x – 3y is 81.