You are running a fuel economy study. One of the cars you is blue. It can travel 41 1/2 miles on 1 1/4 gallons of gasoline. Another car is red. It can travel 22 2/5 miles on 4/5 gallon of gasoline. What is the unit rate for miles per gallon for each car? Which car could travel the greater distance on 1 gallon of gasoline?

a)

For blue: 33 1/5 miles per gallon

For red : 28 miles per gallon

b) Blue car

Step-by-step explanation:

You are running a fuel economy study.

The unit rate for miles per gallon for each car?

For Blue

It can travel 41 1/2 miles on 1 1/4 gallons of gasoline.

1 1/4 gallons = 41 1/2 miles

1 gallons = x

x = 41 1/2 miles ÷ 1 1/4 gallons

x = 33 1/5 miles per gallon

For red

Another car is red. It can travel 22 2/5 miles on 4/5 gallon of gasoline.

4/5 gallons = 22 2/5 miles

1 gallons = x

x = 22 2/5 miles ÷ 4/5 gallons

x = 28 miles per gallon

What is Which car could travel the greater distance on 1 gallon of .

gasoline?

The blue car

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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