To find the distance from the edge of a lake to the tree on the island in the lake, Lisa sets up a triangular configuration as shown in the diagram. The distance from Location A to Location B is 97 meters. The measures of the angles at A and B are 46 ° and 103°. What is the distance from the edge of the lake at B to the tree on the island at C? Round the distance to the nearest tenth of a meter.

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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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