Answer:
66
Step-by-step explanation:
84 = mean + 3sd
60 = mean - sd
sd = mean - 60
84 = mean + 3(mean - 60)
84 = mean + 3mean - 180
264 = 4mean
mean = 66
23+12=
you just need figure it out in your head and see what sounds right
This is a 52% increase.
The answer and the work is attached in the image provided.
5(m – 8) - 4(m – 7)
5m-40-4m+28
m -12
1
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