102/159 = x/4
34/53 = x/4
34(4) = x(53)
136 = 53x
136/53 = x
Answer:
At most 25%
Step-by-step explanation:
The fraction of the distribution that can exceed n standard deviations from the mean is 1/n². For a standard deviation of 5 and a mean of 80, a score of 90 is (90-80)/5 = 2 standard deviations from the mean. Scores better than that can be at most (1/2)² = 1/4 = 25% of the total number of scores.
72km/h because 45 miles equals 72.4205 kilometers. You wouldn’t round up because the tenths decimal place isn’t above 5, so it would be 72 km/h.
The area of a Square is 144 because 12x12 is 144 and if both sides are 12 then that equals 144.
Hope this helps!
