The height y of a ball thrown by a child is given by y = -1/12x^2 + 2x + 4. how high is the ball when it is at its maximum height

The height of ball when it is at maximum height is 12  unit

Step-by-step explanation:

Given as :

A ball is thrown by child to height y

And y as a function  x is y =

So, for maximum value of height ,

 = 0

Or , = 0

Or, = 0

Or, = 2

or,  x = 12

Hence The height of ball when it is at maximum height is 12  unit  Answer

answer: the value of x is 7cm

step-by-step explanation:

it is contrapositive

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