anybody GOOD AT BIOLOGY?? 10 POINTS!!!!?

A protista is a one or many-celled organism the lives in moist or wet surroundings. They have a nucleus and other internal membrane-bound structures

some protista have chlorophyll so they can make there own food but other protist eat other organisms

Other types of protista eat bacteria

Let n be the quantity of nickels, d be the quantity of dimes, and q be the quantity of quarters. You could make a process of 3 equations: zero.05n + zero.1d + zero.25q = three ($three.00 in nickels, dimes, and quarters) d = 2q (two times as many dimes as quarters) n = d + five (5 extra nickels than dimes) Solve via substitution approach. First alternative 2q for d within the 3rd equation: n = d + five n = 2q + five And now alternative 2q for d and 2q + five for n within the first equation: zero.05n + zero.1d + zero.25q = three zero.05(2q + five) + zero.one million(2q) + zero.25q = three (distributive estate) zero.1q + zero.25 + zero.2q + zero.25q = three (mix like phrases) zero.55q + zero.25 = three (subtract zero.25 from all sides) zero.55q = two.seventy five (divide all sides by way of zero.fifty five) q = five And now you'll clear up for the opposite variables: d = 2q d = two(five) d = 10 n = d + five n = 10 + five n = 15 ANSWER: Mary has 15 nickels, 10 dimes, and five quarters.