10. A plane travelling in one direction has a tailwind and takes 3 h to travel 960 km. When it makes the return trip, it has a headwind and takes 4 h to travel the same distance. Assuming the tailwind speed was the same as the headwind speed, what was the speed of the wind? What was the speed of the plane? (Hint: Think of the faster speed as the plane speed plus the tailwind speed.]​

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account