Which set of measurements represents the lengths of an isosceles triangle

3,4,5
13,13,26
27,27,44
18,18,38

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares