*Sigh* It's me again! And guess what! More hard math homework.

puppyloverlauren • 6 December 2012 at 11:18 PM

Yus, my teacher is horrible.
Now on with the problems...


1)At the Snack Shack, dried cherries cost $3.50 per pound. Dried apricots cost $1.50 per pound. The store's owner wants to make 1- pounds of a cherry-apricot mixture that costs $2.70 per pound. How many pounds of cherries and apricots should the owner use to make the mixture? ANSWERED!

2) The sum of the digits of a two-digit number is 16. The first digit is 3 less than twice the second digit. What is the number?

Edit: SOLVED

Question: HOW DO YOU GRAPH AN EQUATION THAT EQUALS X?!


@twilight_raptor
@metaphor
@glazzie
@cynder5
@froggytails

cynder5 • 6 December 2012 at 11:20 PM

for question number two try
3 and 13 or that's about it

puppyloverlauren • 6 December 2012 at 11:24 PM

@cynder5

I just need one answer I think


@whitefire
@elementalpaws
@rainbowkitty
@nitromegamer

cynder5 • 6 December 2012 at 11:25 PM

its 13 and 3

rainbowkitty • 6 December 2012 at 11:26 PM

@puppyloverlauren Sorry, hate math XD
Although I think @tikimaki 's good at it 😸

puppyloverlauren • 6 December 2012 at 11:28 PM

@rainbowkitty

oh, okai X3


@cynder5
sorry, can you explain that to me? I'm taking a test tomorrow so Im really scared

nitromegamer • 6 December 2012 at 11:37 PM

@puppyloverlauren


Dude. Im Icey. You know how much I suck at math. ><

puppyloverlauren • 6 December 2012 at 11:41 PM

@nitromegamer

Oh, okai, thanks for replying XD

@muzzydeath
@shadowheart3
@april__
@muzzydeath

dionaea • 7 December 2012 at 12:01 AM

Edit: NVM, that was wrong, I'll get back to you....

Edit2: No... that was right.... 6 am and Im braindead... so yeah: x*3.5+(x-1)*1.5 is 2.7

On my phone now....

Edit3: The second can be solved using the equation x+(2x-3) is 16

jellyfishus • 7 December 2012 at 11:01 AM

Sorry to jump in but number 2 is 97.
9+7 = 16
7*2=14
14-9=3

Sorry if you already had that answer.

@puppyloverlauren

twilight_raptor • 7 December 2012 at 12:54 PM

@puppyloverlauren
2) The sum of the digits of a two-digit number is 16.

~we'll name the first digit x and the second y. so:
#1) x + y =16

The first digit (x) is 3 less than twice the second digit (y).

~ x +3 = 2y

Solve for x:
x +3 -3 = 2y -3
#2) x= 2y -3

What is the number?
~ substitute equation #2 in #1:
(2y -3) +y =16
3y +3 -3 = 16+3
3y= 19
y= 9.5

Equation 1:
x +y = 16
x + 9.5 -9.5 =16 -9.5
x= 6.5

thats not working... It cant be 97 either:
9 + 7 =16
But 7 x2 =14. 14- 9 is 5 and not 3....

2elle2 • 7 December 2012 at 3:36 PM

@puppyloverlauren

2) The sum of the digits of a two-digit number is 16. The first digit is 3 less than twice the second digit. What is the number?

Let:
x = value of the second digit
2x-3 = value of the first digit

Equation:

x + (2x-3) = 16
3x - 3 = 16
3x = 19
x= 19/3

Are you sure the problem was typed correctly? xD Because if it were, then I would say no solution, because 19/3 is not an integer and it can't be a digit in a number.

@jellyfishus

The answer can't be 97; this is what you did:

9+7 = 16
7*2=14
14-9=3

But in the last equation, (14-9=3), 14-9 does not equal 3, it equals 5.

puppyloverlauren • 7 December 2012 at 6:40 PM

@jellyfishus @twilight_raptor @2elle2

I got it all ^-^ the answer was 86. Thanks for helping!

twilight_raptor • 7 December 2012 at 6:47 PM

@puppyloverlauren how did u get 86?

since 8+3 = 11
which is not equal to 6x2 = 12

puppyloverlauren • 7 December 2012 at 6:48 PM

@twilight_raptor

lol i don't know, I forgot 😸

naturegirl1999 • 7 December 2012 at 7:05 PM

what is the problem you want us to help you solve

monchhichi01 • 7 December 2012 at 7:38 PM

@puppyloverlauren
2) Steps: (I think)
1. Remember that the sum of these two digits is 16
2. Do this 6+6=?-3=?
3. Then do this 16- what ever you got on ^
4. Do the rest.. I already THINK I got the answer... 😸
Hope I helped!

puppyloverlauren • 7 December 2012 at 7:51 PM

@monchhichi01 @naturegirl1999

I already got it all ^-^

BUT i do have another question:

How do you graph an equation that equals x?

celeste • 7 December 2012 at 7:53 PM

@puppyloverlauren

y=x, right?

The coordinates for that would be (1,1) (2,2), etc...

Which would mean it's a 45 degree line.

Does that answer your question?

ljacks • 7 December 2012 at 8:26 PM

@puppyloverlauren
What does the equation look like?

jellyfishus • 8 December 2012 at 7:34 AM

@twilight_raptor
@2elle2
@puppyloverlauren

Eh, sorry, such an idiot.
I always forget to do the sum backwards and then end up getting it wrong.
Sorry. D:

--

If it's y=x it's as @celeste said.
If it's something like x=1 (for example) it would be (1,0), (2,0), (3,0)
so would be a vertical line going through 1 on the x axis.

If it's something like x=y-1 then substitute.
So if y=1 then the equation is x=1-1 = 0
so would be (0,1)
Then keep substituting to get your points and draw the line.

twilight_raptor • 8 December 2012 at 9:49 AM

@jellyfishus thats ok x3 we all make mistakes