Aprojectile is shot into the air following the path, h(x) = 3x2 - 12x + 5. at what time, value of x, will it reach a maximum
height?

never

Step-by-step explanation:

The given path equation describes a path that starts at h(0) = 5, decreases to h(2) = -7, then increases without bound.

Assuming the projectile stops moving when h(x) = 0, it starts at its maximum height at ...

x = 0

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180