What is 78 million in scientific notation?

Which of the following transformations will always produce a congruent figure?

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.