The perimeter of a triangle is 59 ft. One side of the triangle is 2 ft longer than the second side. The third side is 3 ft longer than the second side. How do get the third side?????
2006-09-06 07:18:32 · 5 answers · asked by bsmooth 1 in Science & Mathematics ➔ Mathematics
call the second side x, then
first side = x + 2
second side = x
third side = x + 3
perimeter = first + second + third
... = (x + 2) + x + (x + 3)
... = 3x + 5
3x + 5 = 59
3x = 54
x = 18
third side = x + 3 = 18 + 3 = 21
2006-09-06 07:20:49 · answer #1 · answered by dutch_prof 4 · 0⤊ 0⤋
59 = (2 + x) + x + (3 + x)
59 = 5 + 3x
3x = 54
x = 18
So the third side is (3 + 18) = 21 ft!
2006-09-06 07:22:20 · answer #2 · answered by Embliri Trex 3 · 0⤊ 0⤋
Data:
P=59 ft
One side = 2ft + sencond side
third side = 3ft + second side
Let the second side equal x.
1st=2+x
3rd=3+x
P =1st side + 2nd side + 3rd side
59 =2+x + x + 3 + x
59 =5+3x
59-5=5-5+3x
54=3x
54/3=3x/3
x=18
2nd side is 18ft but since you want the 3rd side u go back to the 3rd side formula which was 3rd = 3ft + 2nd side
3rd side = 3ft + 2nd side
3rd side = 3ft + 18
3rd side = 21ft
The 3rd side is 21 feet.
2006-09-06 07:42:33 · answer #3 · answered by >???<Chinita>???< 3 · 0⤊ 0⤋
x + 2
x + 3
x
Perimeter equals 59 ft
-- - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - -
P = x + x + 2 + x + 3
59 = 3x + 5
59 - 5 = 3x + 5 - 5
54 = 3x
54/3 = 3x/3
18 = x
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The Third side is 18 ft
2006-09-06 08:39:46 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋
Solve the following 3 eqs simultaneously:
a+b+c = 59
a = b+2
c = b+3
These are the math equivalent of your statment
Doesn't look too hard, but I don't do arithmetic here....!
2006-09-06 07:24:27 · answer #5 · answered by Steve 7 · 0⤊ 0⤋