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Nikolay [14]
2 years ago
11

N is a whole number.

Mathematics
1 answer:
matrenka [14]2 years ago
8 0

(n-10)(4n-10) -3\\\\=4n^2 -10n-40n+100-3\\\\=4n^2-50n+97\\\\=4n^2 -50n+96 +1\\\\=2(2n^2-25n+48)+1\\\\2(2n^2 -25n+48)~ \text{is even, so}~  2(2n^2 -25n+48) +1~ \text{is odd.}

\text{Hence,}~ (n - 10)(4n - 10) - 3 ~ \text{is always an odd number for}~ n\in \mathbb{W}.

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aleksandr82 [10.1K]
6 = 4(4) + c
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8 0
4 years ago
HELP ME PLEASEEEE<br> I only know how to do this in division, not multiplication
Kipish [7]

Answer:

360 × 30

= (360 × 3) × 10

= 1080 × 10

= 10800

Step-by-step explanation:

For the first two blanks, we will have to find a pair of factors of 30 that will make this the easiest to solve. Lets pair up all of the factors of 30.

1, 30

2, 15

3, 10

5, 6

So now we have found all of the factors of 30. We can eliminate 1 and 30, since we will just end up with 360 × 30 in the second line. We could use 2 and 15, but we will end up with _____ × 15 in the second line, which would be more difficult to solve for than the other two options. Now, you should use any one of the final two pairs of factors. I would use 3 and 10, since I find it much easier to multiply something by 3 and 10 than 5 and 6.

Lets put 3 in the first blank and 10 in the second blank. We will end up with:

(360 × 3) × 10

Now 360 × 3 would be 1080. So the second line would be:

1080 × 10

1080 × 10 would equal 10800. So the final line and the final blank would be:

10800

So in order, the lines would be:

= (360 × 3) × 10

= 1080 × 10

= 10800

I hope you find my answer and explanation to be helpful. Happy studying.

4 0
3 years ago
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Answer:

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Here h = 6.2, a = 10.8 and b = 7.9, thus

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Answer : D
3 0
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