Step-by-step explanation:
Mean = Average : Sum of the data ÷ Number of data
So find the average number of lates per student
4 = Lates
30 (sum of frequencies) = Frequencies
So 4 ÷ 30 = 7.5
Therefore the answer is 7.5..
Answer:
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Step-by-step explanation:
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35+70 = 105
180-105 = 75
x = 75
Answer:
If M is midpoint of AB, then
AM=MB
4x-5= 2x+11
2x=16
x=8
AM= 4x-5
=4(8)-5
=32-5
=27
BM=2x+11
=2(8)+11
=16+11
=27
Hope it helps:-)