A mixture of 6% diſinfectant solution is to be made from 7% and 3% disinfectant solutions. How much of each solution should be used if 20 gallons of 6% solution are needed?
You need
gallons of 7% solution and
gallons of 3% solution.

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.?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression