+0  
 
0
57
2
avatar+130 

Simplify \((2n-2)(n+3) + (n+2)(n-6)\).

 

The equation \(y = -6t^2 - 10t + 56\) describes the height (in feet) of a ball thrown downward at 10 feet per second from a height of 56 feet from the surface from Mars. In how many seconds will the ball hit the ground? Express your answer as a decimal rounded to the nearest hundredth.

 Aug 20, 2020
 #1
avatar+26620 
0

IF your equation is correct    just put   0 in for height ('y')    and solve the equation for 't'   (likely via the quadratic formula  throw out any negative 't' values found)

 Aug 20, 2020
 #2
avatar+130 
0

??? can you a step by step

 Aug 20, 2020

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