Esther cut a square paper vertically to make two rectangle pieces. Each rectangle had a perimeter of 63 inches.
How long is each side of the original square paper?
Please help me ASAP

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.