23-09-2016
Mathematics

contestada

Solve 2|x|-1=3 and give the final answers that would make it the equations true

Respuesta :

apologiabiology apologiabiology

23-09-2016

remember
|x| makes x positive

so if ou have
|x|=y
assume
x=y and -x=y

so

2|x|-1=3
add 1 to both sides
2|x|=4
divide both sides by 2
|x|=2
assume
x=2
-x=2

so therefor
x=-2 and/or 2

Answer Link

Otras preguntas

How many minutes are in 324 hours?

the specific heat of water its 1 cal/gc how many calories are required when 50 grams of water are heated from 25 c to 75 c

Which example illustrates the commutative property of addition for polynomials?

A steam power plant operates on the reheat Rankine cycle. Steam enters the highpressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa.

what organisms are herbivores

13. Gayle is getting ready for her first day of school. She has 7 new dresses to choose from and 4 new pairs of shoes. How many different outcomes are possible

What might you conclude if a random sample of 23 time intervals between eruptions has a mean longer than 108 minutes? Select all that apply.

Prospects Mike and Marge arrive with agent Elaine at a showing. Elaine parks across the street from the home and Mike is disappointed by what he sees. He’s no l

HEEEEELLLLPPPPPPPPP PLEASE

For years India was ruled by the British East India Company. However, after several riots, the British government stepped in and assumed responsibility for ruli