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FinnZ [79.3K]
3 years ago
11

I need help to solve this

Mathematics
2 answers:
mash [69]3 years ago
5 0
I believe the answer is C but i am not sure
ludmilkaskok [199]3 years ago
5 0
The answer is C. 855-750 is 105, and that number divided by 15 is 7, which is how long the sand was falling
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D is the best answer i think
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Step-by-step explanation:

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Suppose that the division N/5 leaves a remainder of 4, and the division N/2 leaves a remainder of 1, what is the ones digit on N
Tju [1.3M]

Since <em>N</em>/2 leaves a remainder, <em>N</em> must be odd and ends with 1, 3, 5, 7, or 9.

<em>N</em>/5 also leaves a remainder, so <em>N</em> is not divisible by 5, so it does not end in 5.

The only correct choice is then 9, since

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3 = 0•5 + 3 and 3 = 1•2 + 1

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9 = 1•5 + <u>4</u> and 9 = 4•2 + <u>1</u>

<u />

Alternatively, the given information is equivalent to saying

N\equiv 4\pmod5\\\\N\equiv1\pmod2

Then you can use the Chinese remainder theorem to find <em>N</em>.

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3 years ago
Can someone answer this what is 3/4 times 3/6 in simpilest form
schepotkina [342]

Answer:

\large\boxed{\dfrac{3}{8}}

Step-by-step explanation:

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Step-by-step explanation:

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