HELP please (part A)
to the nearest tenth of a foot, how far away from student A is the balloon ?
_feet

(part B)
to the nearest tenth of a foot, how far away from student B is the balloon?
_feet

(part C)
the balloon rises vertically so that distance between the balloon and student A is 90 feet. by how many feet did the balloon rise? express your answer to the nearest foot.
_feet

(part D)
After the balloon rises so that the distance between the balloon and student A is 90 feet, ehat is the angle of elevation from student A to the balloon? express your answer to the nearest tenth of a Degree.
_degree​

answer: l

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:

answer: none of these answers are correct only the second half is

step-by-step explanation: