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Margie threw a ball upwards while standing on a platform 65ft above the ground. The trajectory follows the​ equation:h(t)=-1.5t^2+42t+65,t seconds . How long will it take for the ball to reach​ its' peak? Round your answer to the nearest tenth. nothing


In the statement "Critical thinking requires reasoned judgments," the word reasoned mean

Respuesta :

mhanifa

Answer:

  • 14 seconds

Step-by-step explanation:

Given equation is representing the graph of parabola which opens down and its pick is its vertex

The vertex is calculated by vertex formula:

  • x = -b/2a for the equation y = ax² + bx + c

In our case t is the vertex and its value is:

  • t = -42/(-1.5*2) = 42/3 = 14 seconds

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