Half of the exterior angles of a polygon are all 10 degrees and the other half are all 20 degrees. How many sides does it have?

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years