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zhenek [66]
3 years ago
10

Consider a three-dimensional grid whose dimensions are 10 by 15 by 20. you are at the front lower left corner of the grid and wi

sh to get to the back upper right corner 45 "blocks" away. how many different routes are there in which you walk exactly 45 blocks?
Mathematics
1 answer:
Inessa [10]3 years ago
8 0
 45 steps there will be 10 steps to the right then 15 steps up and 20 steps forward. It is just like counting sequences of 45 letters. so 10 is R  then 15  U, is and 20 is  F.  ending the multinomial coefficient

 (      45    )
 10, 15, 20 = 45/101520  or 45 over 10 15 20
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Answer:

27\leq x \leq37

Step-by-step explanation:

Let's arrange the numbers from least to greatest:

20, 25, 27, 28, 31, 32, 32, 38, 40, 40, 42, 48

The median is the "middle" number when arranged from least to greatest.

There are 12 numbers, so the middle number would be "average" of 6th and 7th terms.

6th term = 32

7th term = 32

Average = (32+32)/2 = 32

Hence, median = 32

Absolute deviation of 5 minutes means 5 minutes less or greater than the median, 32.

So, 32 - 5 = 27  &  32 + 5 = 37

Hence  27\leq x \leq37

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