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S_A_V [24]
3 years ago
12

Please help me !!!

Mathematics
2 answers:
Pie3 years ago
8 0
3. 5mn ( 2m + 6n + 1 )
4. 4a^3b^2c ( 18a^2b - 8c )
5. (X-15)(X+15)
6. -4(y-4.5)(y+4.5)
8. 2X(X-10)(X+10)
i am not sure if no. 8 is right
FromTheMoon [43]3 years ago
4 0
1)~28c-12=4(7c-3)\\\\
2)~x^2y+x=x(xy+1)\\\\
3)~10m^2n+30mn^2+5mn=5mn(2m+6n+1)\\\\
4)~72a^5b^3c-32a^3b^2c^2=8a^3b^2c(9a^2b-4c)\\\\
5)~x^2-225=(x-15)(x+15)\\\\
6)~81-4y^2=(9-2y)(9+2y)\\\\
7)~9k^4-25=(3k^2-5)(3k^2+5)\\\\
8)~2x^3-200x=2x(x^2-100)=2x(x-10)(x+10)\\\\
9)~72y^4-18y^2=18y^2(4y^2-1)=18y^2(2y-1)(2y+1)\\\\
10)~49x^3-xy^2=x(49x^2-y^2)=x(7x-y)(7x+y)
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Find the common ratio for 0.1,0.01,0.001
yulyashka [42]

The common ratio of the set of data is 0. 1

<h3>How to determine the common ratio</h3>

To determine the common ratio of a set of data, we have to

  • Divide the second term by the first term or
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For the given set of data

0.1,0.01,0.001

Let's divide the second term by the first term

= 0. 01/ 0. 1

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Thus, the common ratio of the set of data is 0. 1

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2 years ago
Currently the exchange rate between the US Dollar and the Euro is 1 USD = .85 Euro. If you bring $150 to Ireland with you, how m
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127.50 euros

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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4 years ago
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Read 2 more answers
Take apart the number to make a 10. Then subtract.
Licemer1 [7]

Answer:

This is one of a variety of "subtraction solutions"--basically a different way to subtract by breaking numbers down into 10-digit chunks.  It's not especially helpful for small subtraction problems, but as math gets more complicated, this method will come in handy.

Step-by-step explanation:

Here's an example: Jim had a bag of 15 jelly beans.  He eats 8.  How many jelly beans does he have left?  <u>Take apart the number to make a 10. Then subtract.</u>

Here, you need to "take apart" the 8 to make your 15 jelly beans 10, then you subtract the remainder of 8 to get your solution.  In other words,

 --"take apart" 8 into 5 and 3 (because you're going to need a 5 to make 15 into 10).  15 minus 5 equals 10.  HOORAY!  You have your 10.  Now, subtract the remaining 3.  10 minus 3 equals 7.  Huzzah--your final answer!

On paper, the problem looks like this:

<u>15 - 8 (</u><u>5, 3</u><u>) = ?</u>

15 - 5 = 10

10 - 3 = 7

So...15 - 8 = 7

4 0
4 years ago
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