Mankiii Mankiii

11-10-2015
Mathematics

contestada

solve :
20-9x=11
4(2x+1)=8
5(2x+5)=-15
3(8x+1)=-21

Respuesta :

11-10-2015

20-9x=11
-9x=11-20
-9x= -9
x= -9/(-9)
x=1

4(2x+1)=8
2x+1=8/4
2x+1=2
2x=2-1
2x=1
x=1/2
x=0.5

5(2x+5)=-15
2x+5= -15/5
2x+5= -3
2x= -3-5
2x= -8
x= -8/2
x=-4

3(8x+1)=-21
8x+1= -21/3
8x+1= -7
8x= -7-1
8x =-8
x= -8/8
x= -1

Answer Link

Otras preguntas

Say something funny and I'll give you 50 points

43. Currently...where do more people go to get political information than any other outlet? a. Radio b. Internet c. TV d. Newspapers

Why were pyramids important to the ancient Egyptians?

Which one of these options completes the sentence in a way that makes the most sense? Ticking faster and faster each day, a the clock was clearly broken. b I

1. How are the train and the speaker similar? A. Like the train that has a schedule to keep, the speaker has an approaching responsibility B. Like the train tha

-_- i hate khan plz help me

PLEASE HELP!!! PLEASE!!!

enslavement in kentucky

A metal bar is heated to a certain temperature and then the heat source is removed. At time t minutes after the heat source is removed, the temperature, theta d

A person is studying the relationship between temperature and mental ability. So, she devised a test in which a group of 10 mice are timed as they run through a