How long will it take a couch traveling 90km/he to travel 300 km along a highway

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i