Một mảnh đất hình chữ nhật có chu vi là 180cm. Nếu tăng chiều rộng 6cm, giảm chiều dài 6cm thì diện tích mảnh đất không thay đổi. Hỏi diện tích mảnh đất bạn đầu là bao nhiêu

In the 30-60-90 triangle below side s has a length of and side r has a length

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )