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galben [10]
3 years ago
15

Factor: x^2 - 4x - 21

Mathematics
1 answer:
Naddika [18.5K]3 years ago
3 0

Answer:

(x-7)(x+3) thats the answer for your question

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Which expression is equivalent to<br> 19 - 27?
Bingel [31]

Answer:

-8

Step-by-step explanation:

19 take away 27

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inverse would be -8

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How many medium tick marks lie between two labeled tick marks?
34kurt

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1 tick Mark's lies between two labeled tick marks.

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The second angle of a triangle is double the first angle. The third angle is 40 less than the first angle. Find the three angles
ArbitrLikvidat [17]

Answer:

Angle 1: 55

Angle 2: 110

Angle 3: 15

Step-by-step explanation:

Angle 1: x

Angle 2: 2x

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The total degrees for all the angles in a triangle add up to 180, so we now have the equation x+2x+x-40=180. From here we solve to get 55 degrees for x, so angle 1 is 40 degrees, angle 2 is 110 (2 times 40) and the third angle is 15 (55-40).  

6 0
4 years ago
Need help with 3x + 4x<br><br>will mark branlist​
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Since the two have the exponent x then you can just add. <3

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3 years ago
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<em>There are three such pairs of letters. </em>

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