8 + 13 + 14 + 7 = 42
Chinese = 8/42
Simplified = 4/21
70/6 is basically saying "divide 70 by 6". So to get to a mixed numer, thats what you have to do.
70/6=11.666666...
(.666666..... is 2/3 as a fraction)
The answer is 11 2/3.
hope i helped!! :))
<span>Given that the average
time it takes to replace a defective car radiator is 70 minutes with a
standard deviation of 12 minutes.
The 90% confidence interval of a random
sample of 50 is given by

</span>