The water level in a swimming pool decreases from 60in to 58.25in in one week. assuming that the water level changes at a constant rate, how much did the water level decrease each day?

-0.25 in, per day.

Step-by-step explanation:

Given : The water level in a swimming pool decreases from 60 in to 58.25 in in one week.

Here Initial water level = 60 in

Final water level = 58.25 in

And one week = 7 days

We assume that the water level changes at a constant rate.

Then the rate of change in water level will be given by :-

Hence, the water level decrease each day = -0.25 in, per day.

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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add a pic of the graph, then ill edit this "answer" and solve it for you : 3

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