Mike ride his bike with a constant speed of 14 mph how long will it take to travel a distance of 21 miles. (when I Searched this question the answer popped up but no explanation)

1.5 hours

Step-by-step explanation:

Calculate speed using

time = = = 1.5 hours or 1 hour 30 mins

rick would give her the best deal as he will charge $8.88 per hour

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: