Acylindrical water tank is being filled with a hose. the depth of the water increases by 1 1/4 ft per hour. how many hours will it take for the water level in the tank to be 3 1/2 ft deep? enter your answer as a mixed number in simplest form in the box me .

828. all there is to it!

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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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step-by-step explanation:

answer: 0.64

step-by-step explanation: