i'm not great with word problems. can you lend a hand?
can you lend a hand with this word problem?
it goes, "a square animal pen and a pen shaped like an equilateral triangle have equal perimeters. Find the length of the sides of each pen if the sides of the triangular pen are fifteen less than twice a side of the square pen."
also, thxs for answering...
- 1 decade agoFavorite Answer
3x = 4y
x = 2y -15
x is the length of the triangular sides and y is the length of the squares sides.
plug the second equation into the first
3 (2y-15) = 4y
2y = 45
y = 22.5 inches or cm or whatever
plug y into the first equation
3x = 4 (22.5)
3x = 90
length of the triangle sides are each 30, length of the square sides are each 22.5