Arjun paid $21.60 for a box that contained 12 packs of baseball cards. At this rate, how much is one pack of baseball cards?

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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:

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation:

answer: list the statements and i will follow up!

step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3