Answer:
a>-2
Step-by-step explanation:
The first one is 2x^2+2x-2
the second one is 2x^2-2x-2
the third one is 6h+6k
The answer to this would be C because you can multiply everything by 3 and still have a consistent-dependent system.
The answer to the question would be 3.5
If the ball hit the ground it means that its height is equal to 0. In order to find the time after the ball <span>will hit the ground, we need to find the solution of the equation h(x)=0 which is different to 0.
-4.9x^2+21.3x=0
x(-4.9x+21.3)=0
-4.9x+21.3=0
x=21.3/4.9 = 4.3469 seconds</span>