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pashok25 [27]
3 years ago
15

4k+2/k2-4 • k-2/2k+1= What is the numerator ?

Mathematics
1 answer:
eduard3 years ago
8 0

(4k+2)(k-2)/(k^2-4)(2k+1)

=2(2k+1)(k-2)/ (k^2-2^2)(2k+1)

Cancel out 2k+1

2(k-2)/(k-2)(k+2) using a^2-b^2=(a-b)(a+b)

cancel out k-2

2/k+2


Therefore numerator is 2


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alexgriva [62]

Answer:

x = 19, y = -5

Step-by-step explanation:

x + y = 14  => x= 14-y

2x + 4y = 18  => 2(x+2y)=18  => x+2y=9

x+2y=9 => (14 - y) + 2y = 9

14 + y = 9  => y = -5

x + (-5) = 14  => x=19

5 0
3 years ago
NEED GEO HELP URGENT?
m_a_m_a [10]

Secant and tangent theorem: Square of measure of tangent is equal to the product of length of whole secant and length of exterior secant segment, i.e.

\text{ tangent }^2=\text{whole secant}\cdot \text{exterior secant}.

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49=16+4x,\\ 4x=49-16,\\ 4x=33,\\ x=8.25\approx 8.3 cm.

Answer: x=8.3 cm.

4 0
3 years ago
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5 0
4 years ago
Which expression is equivalent to -5(x+10)?
Kruka [31]
The final expression would be -5x -50.

You could've got this by multiplying -5 and x together, which is -5x.
Multiply -5 and 10 together, and you get -50. 
This is also called the Distributive Property. Hope this helped :)
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4 years ago
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A teacher that likes two different numbers p and q and states that p plus q equals 0 which statement could be true about these t
pychu [463]
D, one number is positive and the other is negative. The only way it could equal 0 is to cross the other out. An example is, -5+5=0
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3 years ago
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