If the measure of one exterior angle of a regular polygon is 156 degrees , how many sides does the polygon have ?

15  sides

Step-by-step explanation:

with regular polygons it is best to work with the exterior angles since the sum of exterior angles is  360  degrees

one exterior angle =  180  − one interior angle

∴  one ext. <  =  180  −  156 =  24  degrees

no of sides  = 360 /24 =  15  s i d e s

cut 138 centimeters off

step-by-step explanation:

250-112 = 138

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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