Can someone help me I’ll mark as brainliest Plz i really need help and plz show everything step by step I have to give in!!

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score

Two numbers have a sum of -19. one number is x. what expression represents the other number?