the sides of a square each have a length of 11x inches write an expression for the perimeter of the square in inches

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?