Put points A, B, C, and D on a line consecutively, so that AB = BC = CD = 6 cm. Find the distance between the midpoints M and N of segments AB and CD. AM = BM = AB/2 = cm CN = = CD/2 = cm Def. of midpoint MN = MB + + CN MN = cm Algebra SUPER QUICK NEED IT RIGHT NOW

x = 23.78

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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