An object is launched straight up into the air with an initial velocity of 40 meters per second, from a height 75 m above the ground. How many seconds later will the object hit the ground?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

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

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.