Nikki is solving the equation below. Which value of x makes the equation true ?

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c, with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Find the cosine function that is represented in the graph.