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Ksenya-84 [330]
3 years ago
14

Solve for x. 5(3x + 9) = - 135

Mathematics
2 answers:
tekilochka [14]3 years ago
7 0

Answer:

x=-12

D

tha last one

lisabon 2012 [21]3 years ago
5 0

Answer:

D x=12

Step-by-step explanation:

-135-5=-140

9+3=12

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Which graph represents a proportional relationship?
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Answer:

The one shown in the photo

Step-by-step explanation:

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The graph shown increases steadily (it's a straight line), and passes through the origin (point 0,0) as well. So, it's proportional. Hopefully that's helpful! :)

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What is the value of the expression |a + b| + |c| when a = –6, b = 2, and c = –11?
iVinArrow [24]
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3 years ago
Write x2 - 8x + 13 = 0 in the form (x - a)2 = b, where a and b are integers. a.)(x - 4)2 = 3 b.) (x - 3)2 = 2 c.)(x - 2)2 = 1 d.
loris [4]
The answer is <span>a.)(x - 4)2 = 3.

(x - a)</span>² = b can be expressed as:
x² - 2ax + a² = b                                 ⇒ x² - 2ax + a² - b = 0

Our equation is                x² - 8x + 13 = 0.
The general formula is    x² - 2ax + (a² - b) = 0

Thus:
8x = 2ax    and a² - b = 13

Divide both sides of the first equation (8x = 2ax) by x:
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Replace a in the second equation (a² - b = 13):
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Now when we have a and b, let's just replace them in the general equation:
(x - a)² = b
(x - 4)² = 3
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3 years ago
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Translate the words to English please<span />
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