each of two congruent sides of an isosceles triangle is 2n + 7 and the third side is 3n. write two equivalent expressions for the perimeter, also combine like terms to find the perimeter
each of two congruent sides of an isosceles triangle is 2n + 7 and the third side is 3n. write two equivalent expressions for the perimeter, also combine like terms to find the perimeter
So one way we can do this is-
2(2n+7)+3n=
4n+14+3n=
7n+14
Another simpler way possible is-
2n+7+2n+7+3n=
RE-ORDER
2n+2n+3n+7+7=
COMBINE LIKE TERMS
7n+14
The perimeter of your isosceles triangle is equal to 7n+14 by combining like terms.
Hope this helps
P=2(2n+7)+3n
p=4n+14+3n
p=7n+14
p=7(n+2)
The equations could be
(2n+7)+(2n+7)+3n
or 2(2n+7)+3n
When we combined like terms it could be
4n+14+3n
2(2n+7)+2(3n) is incorrect because in a triangle there are 3 sides, the measure of two of the sides are 2(2n+7) and the third side is 3n however, he/she put "2(3n)" which would show there are 2 sides with the measure 3n