SOLUTION: if an equilateral triangle has a perimeter of (2x+9)miles and one side of the triangle measures (x+2) miles, how long (in miles)is the side of the triangle ?
a 3 b 5 c 9 d
Algebra.Com
Question 344992: if an equilateral triangle has a perimeter of (2x+9)miles and one side of the triangle measures (x+2) miles, how long (in miles)is the side of the triangle ?
a 3 b 5 c 9 d 15
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
perimeter = 2x+9
one side = x+2
3*(x+2)=2x+9
3x+6=2x+9
3x-2x=9-6
x=3
one side = x+2 = 3+2=5
side =5
RELATED QUESTIONS
On an equilateral triangle what is the perimeter in terms of x if one side is... (answered by vleith)
an equilateral triangle has a perimeter of 42 centimetres how long is each side
(answered by mananth)
If one side of an equilateral triangle is 2 1/8 inches long, what is the perimeter (answered by Murthy)
An equilateral triangle has a perimeter of 24cm. how long is one of its... (answered by jim_thompson5910)
Equilateral triangle ABC has a side length of 400 cm, and a perimeter equal to 100 times... (answered by checkley77)
Whats the perimeter of an equilateral triangle whose side measures 2 1/3... (answered by nerdybill)
If the area of an equilateral triangle is 9√3 sq ft.how long is a... (answered by mananth)
what is the area of an equilateral triangle if each side measures 18 dm... (answered by shanehhhh47)
THE PERIMETER OF A CERTAIN SQUARE IS THE SAME AS THE PERIMETER OF A CERTAIN EQUILATERAL... (answered by solver91311)