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yuradex [85]
3 years ago
11

What two numbers multiply to get -12 but add to get -1?

Mathematics
2 answers:
ra1l [238]3 years ago
6 0
Xy = - 12
x + y = - 1

x = - 12/y
- 12/y + y = - 1
- 12 + y^2 = - y
y^2 + y - 12 = 0
( y - 3 ) ( y + 4 ) = 0
y = 3 , y = - 4

3x = - 12
x = - 4

y = 3
expeople1 [14]3 years ago
5 0
The answer is -4 and 3
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We can find the slope of a formula by using the following formula:

slope = \frac{change \: of \: y}{change \: of \: x} =\frac{y2 - y1}{x2 - x1}
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First we need to find two points on the line. Ijn this particular case we have (-3, 3) and (1, -5). Now we can fill in the formula.

slope = \frac{ - 5 - 3}{1 - - 3} = \frac{ - 8}{4} = - 2

Therefore, the third answer is correct.
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4 years ago
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3 years ago
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8 0
3 years ago
Solve the inequality 5(2x + 1) &lt; 10.<br> х&lt; 1/2<br> x&gt; 1/2<br> х&lt; 3/2<br> x&gt; 3/2
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3 years ago
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