I need some extra brainpower for this:
a music site observed that 60% of the people who downloaded songs from its site downloaded Q Sam's latest single.
The equation below represents this information, where x represents the total number of people who downloaded songs
from the site that month:
x = 0.6x + 384
(WHAT IVE WORKED OUT):
X = 100% Of people who downloaded songs from a website
0.6 [times] X = 60%
60% + 384 = 100%
Choices:
How many people who downloaded songs from the site that month downloaded Q Sam's latest single?
A. 576
B. 240
C. 144
D. 960

- anonymous

- jamiebookeater

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- amistre64

x = 0.6x + 384
-.6x -.6x
-----------------
.4x = 384
what should x be?

- anonymous

96

- amistre64

almost .. you forgot a 0

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## More answers

- amistre64

384/.4 = 960

- anonymous

!!!!

- anonymous

You mind

- anonymous

helping out on some others

- amistre64

dunno, i havent seen the others ... they might scare me

- anonymous

heres one

- anonymous

Solve for :
x + 20 / 2 = 3x

- amistre64

use your grouping symbols correctly ... im assuming (x+20) is on top?

- anonymous

yes

- amistre64

what is your thoughts then, how would you try to work this?

- anonymous

Ill show you

- anonymous

Wait... Ima do this on notepad

- anonymous

I know that you first have to single x out onto 1 side of the line, but what confuses me is the
division thing. I know with division you have to find a Least common denominator, but since there is only
one division problem here, Im clueless as how to go on.

- amistre64

whatever we do to one side, we do to the other ....
A/2 = B ... in order to UNDO division, we multiply
2A/2 = 2B
A = 2B

- amistre64

i would start out by multiplying both sides by that denominator

- anonymous

So multiply both sides by 2 and get rid of the 2 on the first side?

- amistre64

yep
x+20 = 2(3x)
x+20 = 6x ... now what are your thoughts?

- anonymous

There is an x on both sides, so you have to get them onto one side.
Which side do I choose?

- amistre64

either side works ... personally is move the leftside over but it doesnt matter

- anonymous

20 = 5x?

- amistre64

subtraction UNDOES addition soo
x+20 = 6x
-x -x
-----------
20 = 5x
yes, now what is our x value?

- anonymous

4

- amistre64

correct

- anonymous

woww

- amistre64

if we had options, we could have also tried them to see what worked

- anonymous

I have one more. You wanna help pal?

- amistre64

one more, fine

- anonymous

Here I will snip and send pic

- amistre64

i few things wrong with this ... some would contend that this is cheating on an exam; but the more important thing is that you have posted personal information that is contained in the picture.

- amistre64

anyways, you know how to distribute?

- anonymous

Its no exam, XD Its a module test.

- anonymous

3x + 3 = -2x - 2 + 6

- amistre64

mrs collins, santiago, seminole county ... none of that needs to be posted publically is all. its a safety issue for minors

- amistre64

-2(-1) is not -2

- amistre64

dont forget your negative rules :)

- anonymous

Seriously? I could give out my homestate and city, there would still be about 1000+ collins and Santiagos to pick fro. That and you dont even know my address.

- amistre64

3x + 3 = -2x + 2 + 6
now what?

- anonymous

ANYWAYS

- anonymous

3x + 3 = -2x + 2 + 6
3x + 3 = -2x + 8
3x = -2x + 5?

- amistre64

so far so good, now add 2x to get rid of the -2x and we should be good

- anonymous

3(x + 1) = −2(x − 1) + 6.
3x + 3 = -2x + 2 + 6
3x + 3 = -2x + 8
3x = -2x + 5?
+2x +2x
5x = 5
x = 1
Thanks pal! :D

- amistre64

good luck :)

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