Me?

a set of test scores is normally distributed with a mean of 160 and a standard deviation of 12. lori received a score of 172. what was her percentile score?

a. 68%

b. 84%

c. 93%

d. 95%
idk how to do explain : )

Since 68% of the distribution is within one standard deviation of the mean, this means that 68/2 = 34% of the distribution lies above the mean and is less than one standard deviation away from the mean. 

 The mean is the halfway point of any normal distribution, so 50% of the distribution lies below the mean. 

 So 50+34 = 84%  distribution lies below the score of 172 because 172 is the point that is above the mean and it is one standard deviation away from the mean of 160.

step-by-step explanation:

ask goog great chance of finding the solution there

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130