Alexia ran three laps around her neighborhood. Each lap is 1 and StartFraction 3 over 8 EndFraction miles. Which is the best estimate of the number of miles that Alexia ran? 2 miles
3 and one-half miles
4 and one-half miles
6 miles

4 and one-half miles

Step-by-step explanation:

The answer closest to the correct answer is 4 and one-half miles.

To get the answer, you multiply 3 times the length of one lap which is 1 and miles.  To multiply the fraction, you take 3 times the top number in the fraction.  So 3 x 1 = 3 .  The fraction can actually be reduced to 1 and miles.  So you're total correct answer is 4 and miles.

The second selection is 3 and which can also be written as 3 and to make it easier to determine which answer is correct.  The second answer is therefore shorter than the correct answer.

The third selection is 4 and which can be written as 4 and so it is only longer than the correct answer.  So this selection is the closest to the actual miles ran.

answer: no, but if it does it's a obvious pattern.

step-by-step explanation:

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: