Solve for the value of n

N=6

Step-by-step explanation:

Add 34 degrees with the 90 degree angle and you get 124

Then add 124 to your other equation (9n +2)

Make that equation equal to your straight angle 180 and solve.

9n + 126 = 180

9n = 54

n= 6

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: