### Determine whether the planes are parallel, perpendicular, or neither. If the planes are neither parallel nor perpendicular, find the angle between them.

2x + 3y + z =       […]

### Find the length and width of a rectangle that has the given area and a minimum perimeter.

Area of Rectangle A = 49 ft^(2) The aim of this article is to find the dimensions of a rectangle whose area A is known and it is assumed that it has the minimum perimeter P. The basic […]