Two swimming teams are competing in a 400 meter medley relay .During the last leg of the race the swimmer in lane 1 has a 1.7 second head start on the swimmer in lane 2 . The swimmer in lane 1 is swimming at 1.5m/sec. The swimmer at 1.6 m/sec

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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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step-by-step explanation:

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation:

too hard the other guy did it

step-by-step explanation: