Quick math help...

[alexjohnson16]

A 32 foot beam is cut into two pieces; one piece is two feet longer than the other. How long are the two pieces?

How do you do using algebra?

X+(X+2)=32?

If so, why can't I figure this damn thing out. Argh.

 

[Atomicus]

Correct

Just remember to state

x = length of the shorter piece
x+2 = length of longer piece

 

[reverend boltron]

one is 17 the other is 15.
x+x+2=32
x+x=30
x=15

 

[alexjohnson16]

I can't figure it out after that though. Something isn't making sense. I know the answer is 17 and 15, but I can't remember how to do the math to it.

Bloody hell.

 

[reverend boltron]

x+(x+2) = 32
(x+(x+2)-2 = (32)-2
x+x=30
2x = 30
(2x)/2 = 30/2
x = 15

 

[yankeesfan]

1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=15
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=17

15+17= 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 = 32.

There is the math.

 

[sixone]

(32 - 2)/2 = x

 

[Lonyo]

Originally posted by: alexjohnson16
I can't figure it out after that though. Something isn't making sense. I know the answer is 17 and 15, but I can't remember how to do the math to it.

Bloody hell.

x + x + 2 = 32
take 2 from both sides x + x (or 2x) = 30
Divide both sides by 2
x = 15 (30/2)

Thus one is X, or 15, the other is X+2, or 17.

 

[myusername]

That brought back memories.

 

[dighn]

Originally posted by: yankeesfan
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=15
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=17

15+17= 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 = 32.

There is the math.

0.999...+0.999...+...+0.999... = 15