Please help: 2 A train leaves a station at 0730. It travels for 1 hour 30 minutes at 100km/h
and then stops for 15 minutes, It travels a further 200km at 100km/h and
then stops for 30 minutes. It then does the return journey non-stop at

100km/h.

a) Draw a graph of the journey.

b) When does the train arrive back at the station?

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.