I need help writing the first 5 terms of the sequence!

The first five terms of the sequence are 1, 4, 7, 10, 13.

Solution:

Given data:

General term of the arithmetic sequence.

, where d is the common difference.

d = 3

Put n = 2 in , we get

Put n = 3 in , we get

Put n = 4 in , we get

Put n = 5 in , we get

The first five terms of the sequence are 1, 4, 7, 10, 13.

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:

17

step-by-step explanation:

51/3=17

thus 17 is your answer.