What is the interval of convergence for the power series the summation from n equals 1 to infinity of the product of negative n factorial and x to the nth power

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.?

What are the sotions to the quadratic equation 9x^2=4

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?