Will give brainliest and extra points!

y= - 16t^2 + 414

factor out -2

y = -2 (8 t^2 -207)

set y=0

0 = -2 (8t^2 -207)

divide by -2

0 =  (8t^2 -207)

add 207 to each side

207 = 8t^2

divide by 8

207/8 = t^2

take the sqrt of each side

sqrt(207/8) = t

t=5.087seconds

t=5.09 seconds to the nearest hundredth

y=-0.017x2+0.51x

y=  -.017x(x-30)

one of the zero's is 30ft  for the distance.

max = c - (b^2 / 4a)

max = -(.51)^2/4(-.017)=.2601/.068=3.825

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

no

step-by-step explanation:

answer