Quadratic Equasions Question: Alfonso drives a red Nissan Micra. The total stopping distance (tsd) for the car, measured in metres, is given by the formula:

tsd = reaction time (rt) + braking distance (bd)

Alfonso's reaction time is given by the formula rt = ¼ v and the car's braking distance is given bd = ⅛ v² where v is his speed measured in metres per second. whilst driving around town, Alfonso is forced to perform an emergency stop; his total stopping distance is 15 metres. calculate the speed Alfonso was travelling, give your answer in km/h.

An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

Once george got to know adam, they found that they really liked each other. this is an example of what factor in friendship