Un comerciante hace balance de perdidas y ganancias cada trimestre y en el primer mes obtuvo una ganancia de $1,800 dolares y en el segundo mes una perdida de $600 dolares y en el total del trimestre tuvo una ganancia de $7,000 dolares ¿cuanto gano o perdió en el tercer mes?

What is the percent of increase for a population that changed from 438,000 to 561,000

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.?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180