5: Perimeter = 55. AB = 11 + 2x. BC = 7x - 14. AC = x + 18.
Equilateral
Isosceles
Scalene
2007-12-14 03:20:33 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You need to know the actual lengths of the sides.
AB = 11 + 2x
BC = 7x - 14
AC = x + 18
p = AB + BC + AC = 55
11 + 2x + 7x - 14 + x + 18
10x + 15 = 55
10x = 40
x = 4
Now figure out the lengths of the sides and determine what kind of triangle you have.
2007-12-14 03:26:09 · answer #1 · answered by DWRead 7 · 0⤊ 0⤋
AB + BC + AC = 55
(11 + 2x) + (7x - 14) + (x + 18) = 55
10x + 15 = 55
10x = 40
x = 4
AB = 11 + 8 = 19
BC = 28 - 14 = 14
AC = 4 + 18 = 22
all sides different, scalene.
2007-12-14 03:29:24 · answer #2 · answered by Philo 7 · 0⤊ 0⤋
Perimeter = AB + BC + AC = 55
Therefore:
11 + 2x + 7x - 14 + x + 18 = 55
10x = 40
x = 4
Meaning AB = 19, BC = 14, AC = 22
It's scalene.
2007-12-14 03:28:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Since perimeter is 55,
On solving we get X=4
so ab = 19, bc = 14 and ac = 22
So the triangle is a scalene one (As no sides are of same length and hence a scalene one)
2007-12-14 03:28:48 · answer #4 · answered by Nevski 2 · 0⤊ 0⤋
55 = 11 + 2x + 7x - 14 + x + 18
55 = 15 + 10x
40 = 10x
x = 4
AB = 11 + 2x = 19
BC = 7x - 14 = 14
AC = x + 18 = 22
scalene
2007-12-14 03:33:07 · answer #5 · answered by elohimself 4 · 0⤊ 0⤋
11+2x+7x-14+x+18=55
10x+15=55
x=4
AB= 19
BC=14
AC=22
SO ITS SCALENE
2007-12-14 03:26:55 · answer #6 · answered by shree 1 · 0⤊ 0⤋
-x + 6 - 5x = 14 - 2r 6 - 6x = 14 - 2r 3 - 3x= 7 - r -3x = 4 - r 3x = -4 + r x = (r-4)/3 2(2x + 3) = -6(x + 9) 4x+6 = -6x - fifty 4 6 + fifty 4 = -10 x 60 = -10x -6 = x 7 - (-4t) = 4t - 14 - 21t 7 + 4t = 4t - 14 - 21t 7 = 14 - 21t -7 = -21t -7/-21 = t a million/3 = t -3/4x + 5 = a million/4x - 3 -3x + 20 = x - 12 20 + 12 = 4x 32 = 4x 8 = x
2016-11-03 06:10:35 · answer #7 · answered by ? 4 · 0⤊ 0⤋