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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>
Hi!
One deck of card has 52 cards, and in every deck there are 4 queens.
We will find the probability of pulling out the queen from the deck by diving the number of queens by the number of cards in the deck, like this:
4/52 = 1/13
Hope this helps!
Answer:
i think its set B..........
