The perimeter of a rectangle is 100 centimeters. the length is twice the width.
which equation could you use to find the width of the rectangle in centimeters?

4x^2=100
2x(x)=100
2x=2x=100
2x (2x)=2x=100

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.