Which of the following numbers are greater than or equal to 4/7? is it 2/5, 0.57, or 2/3. use explanation why.

2/3

Step-by-step explanation:

2/5=0.4 and 4/7=0.571428

0.57<0.571428

2/3=0.6667

which is greater than or equal to 4/7

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: