Question

Solve |2y - 2| = 15

Answer 1

Question 16 options:
8.5
-13
8.5 and -6.5
17 and -13

Answer 2

do you remember what the vertical lines mean :)?

Answer 3

\[|2y-2|=15\]\[(2y-2)^{2}=15^{2}\]\[4y^{2}-8y+4=225\]\[4y^{2}-8y-221=0\]\[y^{2}-2y-\frac{ 221 }{ 4 }=0\]\[y=\frac{ -b \pm \sqrt{b^{2}-4ac} }{ 2a }\]\[a=1\]\[b=-2\]\[c=\frac{ -221 }{ 4 }\]

Answer 4

Now just plug and chug.

Answer 5

Thanks

Answer 6

It's c.

Answer 7

How poopsiedoodle?

Answer 8

These aren't that hard, it's just asking you to plug in something for x and check to see if it's right, and then once you're done, remove the negative sign, if any.

Answer 9

But if you plug in -6.5 you dont get 15, if you do how?

Answer 10

2+ -6.5 = -13
-13-2=-15
|-15|=15

Answer 11

but isnt it multiply by 2

Answer 12

Yes.

-6.5 = -13/2

The equation is\[|2y-2|=15\]\[|2 \times \frac{ -13 }{ 2 }-2|=15\]\[|-13-2|=15\]\[|-15|=15\]

Answer 13

OK thanks so much everybody!!! I appreciate it Ayvin and poopsiedoodle

Answer 14

Good night everyone thanks so much

Answer 15

You're welcome.

Answer 16

\(\Huge\text{♥}\)

Answer 17

Thanks so so so much