When visiting his parents, tyler drives at an average speed of 42 km/h through urban areas and at an average speed of 105 km/h on the motorway. his journey usually takes him 2.5 hours. one day when there is fog, he sets off 1 hour early and only manages to drive at an average speed of 28 km/h in the urban areas and 60 km/h on the motorway. he arrives 30 minutes late. what was the total distance that tyler travelled?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Someone me! if you’re smart you can solve this!

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average