Respuesta :

Answer:

[tex]946.4\ m[/tex]

Step-by-step explanation:

Let

h(t) ---> the height of an object in meters

t ----> the time in seconds

we have

[tex]h(t)=-2.6t^2+40t+800[/tex]

For t=6 sec

substitute in the quadratic equation  the value of t and solve for h

[tex]h(6)=-2.6(6)^2+40(6)+800[/tex]

[tex]h(6)=946.4\ m[/tex]

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