Write the fraction that represents the repeating decimal. 0.272727

3/11

Step-by-step explanation:

The first term of this repeating decimal is 0.27.  The common factor is 0.0001.

The desired fraction is:

  a          0.27                27           27            3

=   = = =

1 - r       1 - 0.01             0.99         99           11

Check:  does 3/11 = 0.272727... ?  yes

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: