Consider the diagram. planes m and n intersect at line d. lines a, b, and e are on plane m. line a is vertical and forms a right angle with line d. line b is diagonal and goes up and to the right. line e is at the top of the plane and is close to being horizontal. line c is on plane n and is goes slightly up and to the right. lines e and c can be described as intersecting. parallel. perpendicular. skew.

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step-by-step explanation:

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:

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"