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balandron [24]
3 years ago
9

A number lock has 9 different digits. a combination of three digits can be set to open the lock. how many combinations are possi

ble?
Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
There are 7 combinations sis
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Answer:

The answer is 5/6, or .833, 3 repeated.

Step-by-step explanation:

The 4 is only one side of the die, or 1/6 if the surface of the die. So the other part that is left is the other 5/6 of the surface.

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Please help me- pt. 4
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11/30 bags of mulch is needed.

<u>Step-by-step explanation:</u>

We have to find the number of bags of mulch.

7 (1/2) sq. yards need 2(3/4) bags of mulch.

So one sq. yd need 2(3/4) / 7(1/2)

We have to change the mixed fraction into improper fraction and then dividing them we will get the answer.

2(3/4) = ((2×4)+ 3)/4 = (8+ 3)/4 = 11/4

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It change into multiplication as,

11/4 × 2/15 = 11/30 bags of mulch is needed.

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