After 15 hours of burning a candle has a height of 25 cm after 29 hours of burning its height is 22.2 CM what is the height of the candle after 20 hours?

24 cm

Step-by-step explanation:

every 14 hours 2.8 cm gets worn down so

divide it and you get .2cm/hr so  will be 24 cm

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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step-by-step explanation: