2. in the following figure, triangle abc and triangle def are similar. what is the value of x ? triangle abc and triangle def are shown. side ab measures 10 millimeters. side bc measures 4 millimeters. side ca measures 8.5 millimeters. side de is not labeled. side ef measures 12 millimeters. side fd measures x. (1 point) x = 16.5 mm x = 24 mm x = 25.5 mm x = 30 mm

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hello,

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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