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laila [671]
2 years ago
8

Determine the factors of x2 − 8x − 12.

Mathematics
2 answers:
Mila [183]2 years ago
5 0
This polynomial cannot be factored because it is prime. Hope this helps. :)
Anna007 [38]2 years ago
5 0

Answer:

We can't get the factors of the equation.

Step-by-step explanation:

In a quadratic equation ax² + bx + c = 0

when (b² - 4ac) is a perfect square only then we can factorize the equation.

In the given equation x² - 8x - 12 we will check the value of b² - 4ac

here it is given from the equation b = -8 and c = -12

b²- 4ac = (-8)² - 4(1)(-12) = 64 + 48 = 112

Since 112 is not a perfect square number so we can not find the factors of the given equation.

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A movie collector has 105 movie posters and 90 band posters if she sells 21 movie posters then how many band posters should she
kotykmax [81]

Hi there! :)

<u>Answer:</u>

In order to maintain the same ratio, she should sell 18 band posters.


<u>Step-by-step explanation:</u>

<u>Initial ratio:</u>

Ratio is: 105 movie posters for 90 band posters = <u>105 : 90</u>


She sells 21 movie posters, which means that we are left with 105 movies minus the 21 she sold.

105 - 21 = 84 → She now has <u>84</u> movie posters.


In order to answer your question, you'll need to use the cross product method:

105 movie posters → 90 band posters

84 movie posters  → X

<u>(90 × 84)</u> ÷ 105 = X

<u>7,560 ÷ 105</u> = X

72 = X ⇒ Number of band posters she should have left to maintain the same ratio.

She has 90 band posters :

90 <u>- X</u> = 72

Add "X" to each side of the equation → 72 + X = 72 + X

90 = <u>72</u> + X

Subtract 72 from each side of the equation → 90 - 72 = 18

<u>18 = X</u>


There you go! I really hope this helped, if there's anything just let me know! :)

4 0
3 years ago
4 times what number gives you 24
VashaNatasha [74]
6x4 = 24
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Answer:

  about 0.037

Step-by-step explanation:

A suitable probability calculator can provide the probability that 7 inches will be exceeded. It is about 0.036815.

The probability the store will have to refund money is about 0.037.

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