Answer:
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A bag contains 4 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of dr
1 answer:
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To solve this problem you must apply the proccedure shown below:
1- You have that the laddder makes an angle of with the ground and the top of the ladder reaches
.
2- Therefore, you have:
Where:
3-You must substitute values and solve for the lenght, as following:
Therefore, the answer is: