csgolegithacksy csgolegithacksy

25-09-2017
Mathematics

contestada

Solve for x: 2|2x − 2| + 4 = 20.

x = 5, x = −3
x = 5, x = −5
x = 3, x = −3
x = −5, x = 3

Respuesta :

areyna4411 areyna4411

25-09-2017

Subtract 4 from both sides of the equation.
2|2x−2|=16Divide both sides of the equation by 2.
|2x−2|=8Set 2x-2 equal to positive and negative 8.
2x−2=8,2x−2=−8Solve both equations for x.
x=5,−3

Answer Link

mreijepatmat mreijepatmat

25-09-2017

2|2x − 2| + 4 = 20.
2|2x − 2| = 20.- 4
2|2x − 2| = 16
|2x − 2| =8

That means:
1st: 2x-2 = 8 and 2nd: 2x - 2 = -8
1st: 2x=10 and x = 5

2nd 2x-2=-8, 2x = -6 and x = -3

So x = 5 and x = -3 (1st answer)

Answer Link

Otras preguntas

A molecule of pentane is made of 5 carbon atoms and 12 hydrogen atoms. a collection of pentane molecules has 3.01 x 1024 carbon atoms. how many hydrogen atoms a

please help in simplifying

Specific safety information for managing incidents involving refrigerants and other chemicals (inhalation, spills, fires, etc) is found in the:

Evaluate the sine, cosine, and tangent of the angle without using a calculator. θ = − 10π 3

Use the distributive law to multiply. 8(3+6s) A. 24+6s B. 24+48s C. 24+144s D. 3+48s

Which is the equation of a parabola with vertex (0, 0), that opens downward and has a focal width of 6?

Identify a group that was not considered equal when the constitution was written. how did the new country fail to protect this group?

We see STEVE stand shakily and head back to the defense table. He looks out onto the onlookers and sees his parents. His MOTHER forces a smile and his FATHER ma

Will raising the incomes of all increase the happiness of all?

Since the days of franz boas, anthropologists who study processes of cultural borrowing have emphasized that