A ball is thrown straight up, from 3 meters above the ground, with a velocity of 14 m/s. When does it hit the ground? y=-5(x-1.4)^2+12.8

Question and answers are in the attached picture. you so much in advance.

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius