A car is driven 600 miles in 12 hours. What is the rate in miles per hour?
A. .02 mph
B. 38 mph
C. 50 mph
D. 62 mph

C. 50 mph

Step-by-step explanation:

Total miles - 600

Total hours - 12

Therefore, 600/12 = 50

Ans: 50 mph

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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: