SOLUTION: im not quit sure what cat. this question would go under so i tried to find the closes one...i apologize if it is off topic...
a 40 ft. board is to be cut into two peices. The LO
Algebra.Com
Question 13544: im not quit sure what cat. this question would go under so i tried to find the closes one...i apologize if it is off topic...
a 40 ft. board is to be cut into two peices. The LONGER PIECE is to be 7 feet longer than twice the SHORTER peice. How long is each peice?
let x= shorter peice
___=the longer peice
equation:
Answer by LilSkittleMd(119) (Show Source): You can put this solution on YOUR website!
x=shorter piece
y=longer piece
The 40 ft board is to be cut into 2 pieces,which is the equation:
x+y=40
The Longer piece is 7 feet longer than twice the shorter piece, its equation is:
y=7+2x
Then you substitute the y= equation into the x+y equation:
x+7+2x=40 (add together the x's, subtract 7 from 40)
3x=33 (divide by 3 to isolate x)
x=11
Then plug x into either equation
y=7+2(11)
y=7+22
y=29
The shorter piece is 11 feet and the longer piece is 29 feet.
Check:
11+29=40
40=40
29=7+2(11)
29=7+22
29=29
RELATED QUESTIONS
Hello,
I am not really sure where to put this question...what topic it would fall... (answered by nerdybill,edjones)
I'm not sure if this is the category so I apologize if it's not. I have this problem that (answered by jim_thompson5910)
alright so I'm suposed to graph g(x) = 45+9x and i know how to do a problem where say... (answered by solver91311)
I am trying to find the solution to this question:
What 3 consecutive numbers equal... (answered by scott8148)
Hello!
Im new to this so i apologize in advance if i make any mistakes with the post (im (answered by Alan3354)
Im not sure what topic it would fall under. But here is my questions
the variable x is (answered by venugopalramana)
Determine the value of W so that the line whose equations is 5x-2y= -w passes through the (answered by Alan3354,stanbon)
okay so im not sure if it comes under this category but if i were trying to find the... (answered by ewatrrr)
The prince of a far off land was passing through and noticed your fort. He was so... (answered by greenestamps,ikleyn)