A cannonball is fired from an elevated position on land to try and hit a ship out at sea. Which of the following
equations would be best for figuring out the maximum
height the cannonball reaches during its flight?
y=-16(x + 1)(x – 7)
y=-16(x - 3)2 + 256
y=-16x² +96x + 112

What is the number 321,000,000 in scientific notation? also what is the number? ?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

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