People with z-scores of 2.25 or above on a certain aptitude test are sometimes classified as geniuses. if aptitude test scores have a mean of 100 and a standard deviation of 12 points, what is the minimum aptitude test score needed to be considered a genius

Let the minimum score be x
z-score is given by:
z=(x-μ)/σ
where:
mean,μ=100
standard deviation, σ=12
z=2.25
thus
2.25=(x-100)/12
solving for x we get:
27=x-100
x=100+27
x=127
Thus the minimum test score is 127 points

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.

61/100, because if it is 0.(value) than it is value / 100 assuming value is 2 digits long. we cannot simplify it further because 61 is prime number.