Derek runs 4 laps around the track. if each lap around the track is 0.25 miles long, and he starts and stops in the same location, what is derek's displacement? a) 0.5 miles. b) 0 miles. c) 1.0 miles. d) 0.25 miles

Which system of linear inequalities is represented by the graph?

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.