Ok, so 1 is a whole number. 1/5 is a fraction of 1. So you want to subtract 1/5 from 1. The number 1 is equal to 5/5. So if you subtract 1/5 from 5/5 you are left with 4/5. You do the same with the second one, just subtract 3/5 from 5/5 to get your answer.
It would be 8.185 since there aren't 2 numbers that evenly go into 67
Answer:
its 20 :)
Step-by-step explanation:
lol
Answer:
0.0274
Step-by-step explanation:
The mean is
and the standard deviation is 
Calculate
for 
If
then 
and

Use table for normal distribution probabilities to get that

Answer: 310
Step-by-step explanation:
35-15= 20
6200 / 20 = 310