. What do you know about each leg of the trip? How does this relate to the information you want to find? Select all that apply. I know that the rate is increased for one direction of travel and decreased for another direction of travel.

I know that the rate remains constant for each direction of travel.

Each rate change affects the leg of its corresponding trip.

The sum of the two times is equal to the total time.

The product of the two times is equal to the total time.

Each leg of the trip has a constant rate.

2. To answer the question, think about the strategy and tool you would use along with all the information you have. What answer do you get?

The speed of the plane is about miles per hour.

3. Does your answer make sense in the context of the situation? How do you know? Select the correct words or phrases to complete the sentence.

Yes, the answer is reasonable. If you traveled at a rate of (102, 510) for (5, 10) you would travel a distance of (1020, 2550) , which is reasonably close to

(half the distance, the distance).

step-by-step explanation:

659

t= 1/3.

hope this .

step-by-step explanation:

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.