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Hitman42 [59]
3 years ago
8

Solve for x: |2x + 12| = 18

Mathematics
2 answers:
Mashcka [7]3 years ago
7 0
2x + 12 = 18
18 - 12 = 6
2x = 6
x = 3
kumpel [21]3 years ago
7 0
So you want to drop the absolute value signs and you need to make two equations:

2x + 12 = 18 OR 2x + 12 = -18
subtract both sides by 12 for both equations
2x = 6 OR 2x = -30
divide both sides by 2 for both equations
x = 3 OR x = -15

i hope this helps!!

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Y = 2(x+2)^2 - 18Find the x intercepts
murzikaleks [220]

Answer

x=-5

and

x=1

Explanation

The equation y = 2(x+2)^2 - 18 corresponds to a translation 2 units left and 18 units down, and a and a shrinkage about the x-axis with factor 2.

Making these transformations to y=x^2, we have:

y=2(x+2)^2-18y=2(x{}^2+4x+4)-18y=2x^2+8x+8-18y=2x^2+8x-10

Factoring:

y=2(x^2+4x-5)y=2(x+5)(x-1)

The x-intercept are found when y=0, that is:

\begin{gathered} x+5=0 \\ x=-5 \end{gathered}

and

\begin{gathered} x-1=0 \\ x=1 \end{gathered}

6 0
1 year ago
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Citrus2011 [14]

Answer:

x^3 + 3x^2 + 4x + 12

7 0
3 years ago
Y= -8x + 10/9 what is the y intercept
4vir4ik [10]

Answer:

10/9

Step-by-step explanation:

This equation is in slope-intercept form, this is referring to the y-intercept. Slope-intercept is y=mx+b, where m is the slope and b is the y-intercept. Therefore, 10/9 is the intercept while -8 is the slope.

4 0
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(x^2-2x-4)(x^2-3x-5)
Montano1993 [528]

Answer:

−x4+5x3−3x2−14x+40

Step-by-step explanation:

7 0
3 years ago
Im suppose to select the number line that goes with the inequalities.
kvasek [131]

Answer:

Number line C

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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