What is 2.4 in the form of a fraction using integers

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.

Choose the more precise measurement. 26.4 cm or 8.39 cm

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.