I dont know what 12 / 63(fraction) is simplified can someone help
also 12 isn't 1

Step-by-step explanation:

When simplifying fractions, you need to find the biggest common factor between the numerator (12) and denominator (63). In this case, the biggest common factor is 3.

Thus:

Numerator = 12 ÷ 3

                  = 4

Denominator = 63 ÷ 3

                      = 21

=

i'm sure goog can you get that answer

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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