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Kitty [74]
3 years ago
14

The main devices in a rectifier are:

Computers and Technology
2 answers:
Oksana_A [137]3 years ago
8 0

A rectifier generally uses diodes.

prisoha [69]3 years ago
7 0

Answer:

a rectifier generally used diodes....

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simplify the expression below and state the value of m for which the simplified expression is not defined 2m² + m - 15/ m² - 9​
motikmotik

Answer:

  • The simplified expression is: \frac{2m-5}{m-3}
  • The simplified expression is undefined for m=3

Explanation:

The given expression is:

\frac{2m^2+m-15}{m^2-9}

The numerator can be siplified by using factorization and denominator will be simplified using the formula

a^2-b^2 = (a+b)(a-b)

So,

= \frac{2m^2+6m-5m-15}{(m)^2-(3)^2}\\=\frac{2m(m+3)-5(m+3)}{(m-3)(m+3)}\\=\frac{(2m-5)(m+3)}{(m-3)(m+3)}\\=\frac{2m-5}{m-3}

A fraction is undefined when the denominator is zero. In order to find the value of m on which the simplified fraction will be undefined we will put denominator equal to zero.

So,

m-3 = 0 => m = 3

Hence,

  • The simplified expression is: \frac{2m-5}{m-3}
  • The simplified expression is undefined for m=3
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3 years ago
Match terms in the first column with the order descriptions in column two.
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Answer:

2 to A

1 to C

3 to B

Explanation:

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The file extension of MS-Word document in office 2007 is?(a) .pdf (b) .doc (c) .docx (d) .txt
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page layout tab or the page setup dialog box

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I believe the question is asking which of the options is true about a cyber community. In that case, only D is true, as a cyber community, such as facebook or instagram, gives you that ability. The rest of the options only apply to a physical community.
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