A speed camera takes two photographs of a car.
Photo 1 = LEH
0.8m
Photo 2
0.8m
Photo 2 was taken 0.5 seconds after Photo 1.
Marks on the road are 0.8 metres apart.
Calculate the average speed of the car in m/s.

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Which angle of rotation is an angle of rotational symmetry for all figures?