Shaun needs to make mortar for brick laying. it is made in the ratio 7: 3 of sand to cement. if 210 kg of sand is used, how much cement is needed

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 is the missing step in this proof ?

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811